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A Guide to Bipolar, Dipolar, & Direct-Radiating Monopole Surround Speakers (PARTI)

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Tools Modes

10-08-2008,10:35 PM

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Big

DaddyModerator

Membersince:Jan 2008

Location:Southern California

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A Guide to Bipolar, Dipolar, & Direct-Radiating Monopole SurroundSpeakers (PART I)

It is highly recommended that you also read A Guide to Bipolar, Dipolar,& Direct-Radiating Monopole Surround Speakers (PART II).

OFF-AXIS RESPONSE OF SOUND WAVES

The following diagram demonstrates that high frequency sound waveshave a narrower off-axis response and low frequency sound waves have

a much wider off-axis response. That is why you can stand to one side orbehind a subwoofer and still hear bass frequencies like you were in front,

but lose midrange or higher frequencies.

Off-Axis Radiation

It is said that the higher frequencies sound waves behave like headlights

or flashlights and low frequency sound waves behave like ripples of waterwaves in a pool. This is why tweeters are shaped like domes. A curved

diaphragm pushes high frequency sound waves in a way that aidesdispersion.

INTERFERENCE OF SOUND WAVES
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Interference usually refers to the interaction of waves with each other,

When similar independent waves are combined, the result can be eitherconstructive or destructive interference, depending on whether the waves

are in phase or out of phase. This interference occurs when the waveshave the same or nearly the same frequency. Constructive interference

will enhance sound. Destructive interference will weaken sound. If twoidentical waves are 180 degrees out of phase, they will cancel out.

Whether the interference is constructive or destructive, the individualwaves continue to exist separately. The interference itself is merely the

effect of the waves together at one point in space.

Source: Headwize.com

Two waves in phase and two waves 180 out of phase.

Source: Wikipedia

The animation in the following demonstrates two waves traveling in the
http://www.headwize.com/tech/elemnts_tech.htmhttp://www.headwize.com/tech/elemnts_tech.htm


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same direction. The phase difference between the two waves varies withtime so that we see constructive interference when maximum points are

aligned (peak) and destructive interference when minimum andmaximum points are aligned (null).

Animation courtesy of Dr. Dan Russell, Kettering University

THREE TYPES OF SPEAKERS

The direction that speakers radiate their sound depends on how thedrivers are lined up in the enclosure, and also whether there are drivers

or ports on the back of the speaker. If all the speakers are on the front,

this would be called Monopole. If there are speakers on the front andback, and they are in phase (both speaker cones moving away from themagnet), this is called Bipolar, whereas if the cones are out of phase(one cone moving in towards the magnet, while the other cone is movingoutwards, away from the magnet), the speaker design is called Dipolar.

Monopole SpeakerMonopole speakers consist of a driver or a group of drivers in the speakercabinet all firing on the same plane in the same direction. A conventional

sealed box speaker pushes a small cone back and forth against the airand creates sound. You can see that for a box speaker most of the sound

goes one direction (monopole) and that the box construction plays an

important part of how this makes sound.
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Conventional Box (Monopole)

Source: Integracoustics.com

Bipolar SpeakerAnother way to create sound waves is by a bipolar arrangement, where

the front and back speakers work against each other (in phase). Bipolarspeakers are made by mounting in-phase monopoles on opposite sides of

a box as a way of creating omnidirectional radiation patterns. Here iswhat they look like
http://www.integracoustics.com/MUG/MUG/articles/planar/http://www.integracoustics.com/MUG/MUG/articles/planar/


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Bipolar Speaker

Source: Integracoustics.com and Djsociety.org

Dipolar SpeakerDipolar speaker arrangement is similar to bipolar. However, the front and

the back speakers work in the same direction (out of phase). This can beuseful in reducing the stimulation of resonant room modes at low

frequencies. It also results in high frequencies being reflected from therear wall, which can create more diffuse reverberation, though in theory

it could reduce stereo localization. Here is how they look
http://www.integracoustics.com/MUG/MUG/articles/planar/http://www.djsociety.org/Speaker_1.htmhttp://www.integracoustics.com/MUG/MUG/articles/planar/http://www.djsociety.org/Speaker_1.htm


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Dipolar SpeakerSource: Integracoustics.com and Djsociety.org

DISPERSION PATTERNS OF THE MAIN DIAPHRAGMS

Direct Radiating (Monopole)In a direct radiating monopole, a diaphragm compresses the air in frontof it and pushes the wave outward. As the wave expands, its energy is

distributed, resulting in lower pressure and a reduction in its loudness.This shown in the following diagram (please be patient, the file size of

this simulation is 5.6MB and takes a long time to load):
http://www.integracoustics.com/MUG/MUG/articles/planar/http://www.djsociety.org/Speaker_1.htmhttp://www.integracoustics.com/MUG/MUG/articles/planar/http://www.djsociety.org/Speaker_1.htm


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Monopole Dispersion PatternSource: Integracoustics.com

Bipolar Speaker Dispersion PatternFor two sound sources at same frequency, amplitude, and phase, therewill be points in space where the overall sound level is high (constructive

interference) and other places where the sound level is approximatelyzero (destructive interference). The constructive interference occurs as

their off-axis response (mostly lower frequency waves) reinforce eachother. That is why bipolar speakers are known for their strong dispersion.
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Bipole Dispersion PatternSource: Wikipedia and Integracoustics.com

Dipolar Speaker Dispersion PatternThe radiation pattern of a dipole is demonstrated in the followingdiagram. The left waves are equal and opposite to the waves on the

right. Because they are firing out of phase, they cancel each other wherethese waves are superimposed off-axis (top and bottom, mostly lower

frequency waves). This is called destructive interference and creates afigure 8 pattern. Dipole speakers are known to have weaker bass

response.

Dipole Dispersion PatternSource: Integracoustics.com
http://www.integracoustics.com/MUG/MUG/articles/planar/http://www.integracoustics.com/MUG/MUG/articles/planar/http://www.integracoustics.com/MUG/MUG/articles/planar/http://www.integracoustics.com/MUG/MUG/articles/planar/


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Comparison of the Dispersion Patterns

Source: Integracoustics.com

In the above diagram, note that the bipole field shows a larger off-axisresponse (the middle part of the center diagram) compared to the

monopole. This is because the drivers in the front and rear are in-phase,which constructively reinforce the sound waves.

Dipole speaker arrangement, however, exhibits a smaller off-axis

response (middle part of the diagram on the right) compared to themonopole. This is because a dipole arrangement has out-of-phase drivers

which behave in a destructive manner and cancel the sound waves with

the same frequency.

REFLECTION FROM THE BOUNDARIES

Reflection from the Back Wall for Bipolar SpeakerThe following diagrams demonstrate two waves when the speaker drivers

are operating in phase. The reflection form the rear driver can interferewith the wave coming from the front driver and create constructive

reinforcement (called lobing, light areas) or destructive interference(called null, dark areas).


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2 Dimensional and 3 DimensionalSource: Integracoustics.com

Reflections from the Back Wall for Dipolar SpeakerWhen the back-wave starts off from the rear of the speaker and reflectsoff the back-wall and travels back to the speaker where it recombines

with the new wave just being started from the front driver. Because oftiming difference, at some frequencies the two waves destroy each other

and at other times they reinforce one another. This effect is called combfiltering A comb filter adds a delayed version of a signal to itself, causingconstructive and destructive interference. Some dipolar users treat theback-wall with absorbent material that absorbs all frequencies except the

long bass frequencies. That is one way to prevent comb filtering. Anotherway is to turn the dipolar speakers inward so that they are not parallel to

the rear wall.

FRONT SPEAKERS SETUP

For front speakers, put the speakers at least 2-3 feet (approx. 1 meter)

away from the front and side walls.

The distance between the two speakers should be between 6 to 10feet (2 to 3 meters).

The distance between your main listening chair and the distance

between the two speakers should be approximately the same.They should form approximately an equilateral triangle.


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The tweeters should be about the same level as your ears whenyou are seated. For smaller speakers, use a stand. Slight tilting

backward or forward of the speakers until the tweeters pointtoward your head may also work.

You can slightly angle (toe-in) the speakers toward the listeningchair. You can use a string or laser pointer to make sure both

speakers are angled exactly the same. Angling the speakerstoward the center of the listening position will make the sound

brighter, clearer, with a sharper focus, and a more solid centralimage. Pointing the speakers straight forward, parallel with each

other, will result in a warmer less sharply focused sound. Anglingthe speakers too much may have two disadvantages:

1. It may ruin the sound stage.

2. It will not be very effective for others who may be sitting

elsewhere in the room. Don't be selfish.

Play a CD with good soundstaging and a singer in the middle.

If the soundstage is good and wide but the center stage is blurred,move the speakers closer together.

If the center stage is focused and sounds great, but thesoundstage isn't very wide, angle the speakers away from the

listening position a little at a time until the soundstage becomes


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wider without losing the center stage.

Many speakers may sound better if they are pointed at yourshoulders rather than directly at your head.

Always use a string or laser pointer to make sure both speakers

are angled the same way.

Don't be afraid to experiment. Rooms are not the same andinteraction with room boundaries, furniture, carpets, etc. play animportant role in the sound that you hear.

Many experts believe that in a small home theater room, you hearthe room and not the speakers.

DIPOLAR & BIPOLAR SURROUND SPEAKERS SETUP

Dipole speakers are designed to have a null area in front of them and thelistener is intended to sit within that null for the proper ambient effect.

When you sit in the null area, you will get a diffuse sound that is moreappropriate for surround speakers. Bipole speakers, on the other hand,

have no null area, and are much more flexible in their placement. Theycan be installed on the side walls or on the back wall with excellent

results.

Normally, surround speakers are placed at or above ear level. However,for movies, installing them 2ft to 3 ft above ear level is preferred. In a

5.1 setup, you have three options for installing bipolar speakers:

1. On the side walls, above and behind ear level.

2. Hung from the ceiling, above and behind ear level.

3. The rear wall, above ear level.

When doing 7.1, two bipole speakers can go on the side walls or hung

from the ceiling, above and behind ear level. The additional bipolesurround speakers are placed behind the listener on the rear wall or hungfrom the ceiling, again above ear level.

In a 5.1 setup, dipolar speakers are installed on the side walls or hung

from the ceiling on the same line as the listener (the null area faces thelistener). In a 7.1 setup, dipolar speakers can be used. However, care

must be taken to position them properly (see the section below).


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All diagrams are created by Big Daddy

In case you have a wall on one side and the other side is open, you canattach one surround speaker to the wall and attach the other one to the

ceilining with a chain or with a bracket. Alternatively, you can put thatspeaker on a tall stand. Make sure the heights and distances are the

same.

http://www.nsmaudio.com/brochures/htsetup.html

Dipolar Surround Speakers in a 7.1 Setup

Dipole surround speakers are typically labeled Left and Right sothat, when you place them on the sides, the in-phase drivers are pointing

towards the front of the room. This allows them to be in phase with yourfront speakers and avoid cancellation problems that can occur when out

of phase drivers are facing each other.

If, in a 7.x setup, you decide to use another pair of dipole surround

speakers in the rear, you will have to place the left speaker on theright side and the right speaker on the left side as in the diagrambelow. This is to avoid cancellation problem when the speakers are out of

phase. If you decide to use direct radiating speakers or bipole speakers inthe rear, you will not need any special consideration.
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For dipole speakers, if there are arrows on the speakers they should facethe front of the room for the side speakers, and toward the center of the

wall for the rear speakers.

DIRECT-RADIATING MONOPOLE SURROUND SPEAKERS SETUP

When you use direct-radiating monopole speakers as rear or sidesurround speakers, they can may be placed on the side or behind the

listeners. When used on the sides close to the listeners, make sure theyare not ahead of the listening position and they are not directly aimed at

their heads (Fig. A). If positioned several feet behind the listening

position, experiment with speaker aiming (Fig. B).


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Different Options for Direct-Radiating Monopole SurroundSpeakers

KEY CONSIDERATION WHEN CHOOSING DIRECT ORBIPOLE/DIPOLE SURROUND SPEAKERS

Arguments will vary from person to person, based upon the preference of

the individual.

Movies:

The surround speakers should not distract your attention away

from the movie.

They should help to draw you into the film. This is what surround

speakers should do.

Surround speakers are intended to reproduce ambient effects like

explosions, gunfights, the hum of a spaceship, or crickets at nightso they sound like they are coming from everywhere in the room

not just where your speakers are located.

Bipoles/Dipoles have a bigger surround sweet spot than direct

radiating surrounds have.

Bipoles /Dipoles are a closer match to the surround speaker arrays

found in movie theaters.

Music:

With stereo music, you are essentially creating images in spacewith two speakers.

You can move instruments around in space, and expect the


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listener to perceive more than two speakers.

Add two more speakers in the rear and you now create the abilityto pinpoint the source of the music between all four speakers, so

in theory you can place an instrument anywhere in 360 degreesaround your head.

By introducing dipoles/bipoles, you destroy that image. You aremore at the mercy of the room. The room will most certainly color

the sound and add its own signature.

Some may actually like this effect, but the music is less accurate.

Your room's acoustics will affect bipole/dipole designs more thanconventional direct-radiating.

Direct-radiating (monopole) models send sound directly toward

the listeners ears.

Conventional direct-radiating monopole speakers place the listeners in a

sound field in which the direct sound is more prominent. It is possiblethat the majority of people find stereo to be more attractive if the room

reflections are strong. The sound tends to be open and spacious, with agood sense of depth like a real live concert. It has the advantage of

making stereo listening region more enlarged. However, the specific

images can be rather vague.

On the other hand, there are some listeners who do not like this kind of

music reproduction, and prefer to have a very specific, almost pinpoint,sense of image position. Many recording engineers prefer this because

they need to be able to hear, very precisely, the results of theirmanipulations. As a result, recording studios are often acoustically rather

dead, and the loudspeakers are directional and identical. They useidentical speakers so that they are perfectly timbre matched so that the

sound is not affected by the differences between the speakers. However,these same people usually prefer the more spacious sound field at home.

SUMMARY

Advantages of Bipole Speakers

The bipolar speakers are wired in phase and push out more air,

resulting in a bit more bass.

Bipolar speakers can be used as the main speakers.

This design allows a bipolar speaker to provide the best of bothworlds: a direct-speakers clarity and focus, and a dipoles

spaciousness.

Bipolar speakers work in roughly the same way as direct-radiating

speakers. They feature two sets of drivers pointed in differentdirections and wired in-phase, both pushing and pulling air at the

same time. That gets sound moving toward the walls, ceiling,furniture, etc., introducing more sonic energy in more directions

than you would with a direct-radiating speaker. In other words,you will got more sound coming at you from more directions.

However, most of the sound is coming from the speakers


20/32

themselves.

Bipolar surround speakers use speaker drivers aimed towards the

front and back of the room to achieve a diffuse sound-field likethat created by the multiple surround speakers in movie theaters.

Your rooms acoustics will affect these designs more thanconventional direct-radiating speakers.

Disadvantages of Bipole Speakers

Bipolar speakers are affected by your rooms acoustics more than

conventional direct-radiating speakers. You are at the mercy ofthe room. Some may actually like this effect, but it is less

accurate.

Some argue that the midrange response of bipolar speakers are

not as good, particularly as the main speakers. It is probably moresuitable for surrounds.

Bipole speakers do not have the sound-field of the dipole (not as

open sounding).Advantages of Dipole Speakers

Dipolar create a more open space of sound without the listener

being able to pinpoint the source of the sound.

Unlike bipolar speakers, the drivers in dipoles arent moving in and

out at the same time. One driver pushes air while the other pulls.So when the dipoles are placed properly, at 90 from the screen,

directly to the left and right of the listener, they create a null zonean area in which the sound coming from each speaker

effectively cancels itself out, usually in the off-axis middle areafacing the listener. The sound coming straight toward the

listeners ears is effectively dampened, and instead the listener

hears virtually nothing but reflections from the room boundaries.So instead of perceiving sounds as coming from the speaker itself,the result is a diffuse sound-field.

This design offers a more diffuse, spacious sound than a direct-radiating model. This is what surround speakers should do, after

all. They are intended to reproduce ambient effects.

Dipolar models are favored for THX-certified designs specifically

because of their diffuse sound, which more accurately resembleswhat you would hear in a real movie theater.

According to Dolby Laboratories: Surround speaker placement,room acoustics, and personal preference are as important as the

speakers radiating characteristic. These factors vary greatly, soDolby Laboratories cannot recommend a particular speaker for

home theater use.

Dipoles are a closer match to the surround speaker arrays found

in movie theaters.

Ambience and envelopment are the goals of surround speakers,

not the 3D holographic rear stereo images. Dipoles do a better jobat envelopment due to the sound being directed away from the


21/32

listener. Having the forward and backwards firing sounds out-of-phase makes the speaker harder to pinpoint.

Dipoles have a bigger surround sweet spot than direct radiating

surrounds have.

Disadvantages of Dipole Speakers Dipoles are said to provide the most room filling ambient effect,

but sacrifice a little bass as the drivers are wired out of phase.

Some critics claim that dipolar speakers were invented in the old

analog and matrixed surround sound days. Nowadays, most digitalsurround audio codecs are discrete with five or more channels.

The diffuse sound-field of dipole speakers destroy this advantage.

Others claim that dipoles were originally designed to create a

diffuse sound-field in rooms that were acoustically treated toduplicate the effect of multiple direct radiating speakers in

commercial theaters. However, even in many high-end hometheaters, they do not treat the rooms that much. So the

advantage of dipoles is limited.

Advantages of Direct-Radiating Monopole Speakers

Direct-radiating models fire sound directly out toward thelisteners ears. These are a good all-purpose speakers as their

clear, focused dispersion pattern can accurately convey thedirectional sound effect in soundtracks.

Conventional direct-firing speakers place the listener in a sound-field in which the direct sound is more prominent.

Some experts would argue that the use of a monopole, or directradiating surround speakers would provide a more direct sound,

which can be of some benefit in listening to multi-channel music.

Disadvantages of Direct-Radiating Monopole Speakers

Direct-radiating speakers draw attention away from the moviesand to the speakers.

Surround effects lose their three dimensional and diffuse impact

with direct speakers.

Direct-radiating speakers are not quite as good in home theater

use. They may be advantageous in music listening.

In most cases, the room you are using will have a direct correlation to

the choice of loudspeaker, as a speakers placement is just as importantas its makeup or construction.

ADDITIONAL INFORMATION AND REFRENCES

http://www.ecoustics.com/Home/Home_A...les/alpha.html

http://www.educypedia.be/electronics/loudspeakers.htmhttp://www.headwize.com/tech/elemnts_tech.htm

http://en.wikipedia.org/wiki/Destruc...e_interferencehttp://www.kettering.edu/~drussell/Demos.html

http://www.integracoustics.com/MUG/MUG/articles/planar/
http://www.ecoustics.com/Home/Home_Audio/Speakers/Speaker_Articles/alpha.htmlhttp://www.educypedia.be/electronics/loudspeakers.htmhttp://www.headwize.com/tech/elemnts_tech.htmhttp://www.kettering.edu/~drussell/Demos.htmlhttp://www.integracoustics.com/MUG/MUG/articles/planar/http://www.ecoustics.com/Home/Home_Audio/Speakers/Speaker_Articles/alpha.htmlhttp://www.educypedia.be/electronics/loudspeakers.htmhttp://www.headwize.com/tech/elemnts_tech.htmhttp://www.kettering.edu/~drussell/Demos.htmlhttp://www.integracoustics.com/MUG/MUG/articles/planar/


22/32

http://en.wikipedia.org/wiki/Dipole_loudspeakerhttp://www.djsociety.org/Speaker_1.htm

http://www.integracoustics.com/MUG/M...icles/sources/http://www.polkaudio.com/downloads/hthandbook.pdf

http://www.bobgolds.com/DipoleSurrounds/home.htmhttp://media-server.amazon.com/media...L000035963.pdf(P. 15)

http://www.bwspeakers.com/downloadfi...DS7_manual.pdf(P.2, Fig. 5)http://66.218.69.11/search/cache?ei=...icp=1&.intl=us

http://www.harman.com/wp/pdf/HowManyChannels.pdfhttp://www.approvedarticles.com/Arti...ed-To-Know/495

http://www.harman.com/wp/pdf/Loudspe...ndRoomsPt1.pdfhttp://www.harman.com/wp/pdf/Loudspe...ndRoomsPt2.pdf

http://www.harman.com/wp/pdf/Loudspe...ndRoomsPt3.pdfhttp://www.electronichouse.com/artic...dex.php/?cr=on

http://www.audioholics.com/news/on-l...sound-standardhttp://www.aesnashville.org/PDFs/Tec...tal%20FAQs.pdf

http://www.hometheatershack.com/foru...ar-better.htmlhttp://www.diyaudio.com/forums/showt...?postid=445666

http://www.electronichouse.com/artic...rect_speakers/http://www.buyingloudspeakers.com/Sp...0Enclosure.htm

Last edited by Big Daddy; 04-19-2011 at05:57 AM.

10-08-2008,10:36 PM

#2(permalink)

Big DaddyModerator

Member since:Jan2008

Location:SouthernCalifornia

Home TheaterGallery:79

Blu-raycollection:105

Check this thread for Alphabetical List of Bipolar and DipolarSurround Speaker Manufacturers.

http://en.wikipedia.org/wiki/Dipole_loudspeakerhttp://www.djsociety.org/Speaker_1.htmhttp://www.integracoustics.com/MUG/MUG/articles/sources/http://www.polkaudio.com/downloads/hthandbook.pdfhttp://www.bobgolds.com/DipoleSurrounds/home.htmhttp://media-server.amazon.com/media/mole/MANUAL000035963.pdf?tag=blurayforum-20http://www.bwspeakers.com/downloadfile/speakermodel/DS7_manual.pdfhttp://66.218.69.11/search/cache?ei=UTF-8&p=advantages+of+bipole+vs+dipole&xa=EZLulHCiI6iM8FSFQPWDPw--,1222163486&fr=yfp-t-501&u=www.harmanaudio.com/all_about_audio/audio_art_science.pdf&w=advantages+advantage+bipole+vs+dipole&d=ZxpjePReRYZF&icp=1&.intl=ushttp://www.harman.com/wp/pdf/HowManyChannels.pdfhttp://www.approvedarticles.com/Article/Home-Theatre-Speakers---What-You-Need-To-Know/495http://www.harman.com/wp/pdf/LoudspeakersandRoomsPt1.pdfhttp://www.harman.com/wp/pdf/LoudspeakersandRoomsPt2.pdfhttp://www.harman.com/wp/pdf/LoudspeakersandRoomsPt3.pdfhttp://www.electronichouse.com/article/whats_the_difference_between_bipole_and_dipole/C91/index.php/?cr=onhttp://www.audioholics.com/news/on-location-articles/home-theater-cruise-panel-2-setting-a-new-surround-sound-standardhttp://www.aesnashville.org/PDFs/Technical/Dolby/Dolby%20Digital%20FAQs.pdfhttp://www.hometheatershack.com/forums/home-audio-speakers/11299-bipolar-dipolar-better.htmlhttp://www.diyaudio.com/forums/showthread.php?postid=445666http://www.electronichouse.com/article/surround_sound_bipole_dipole_direct_speakers/http://www.buyingloudspeakers.com/Speaker%20Enclosure.htmhttp://forum.blu-ray.com/1210748-post2.htmlhttp://forum.blu-ray.com/member.php?u=21086http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/gallery.php?member=Big%20Daddyhttp://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=Big%20Daddyhttp://forum.blu-ray.com/speakers/93873-bipolar-dipolar-surround-speaker-manufacturers.htmlhttp://forum.blu-ray.com/speakers/93873-bipolar-dipolar-surround-speaker-manufacturers.htmlhttp://forum.blu-ray.com/member.php?u=21086http://forum.blu-ray.com/newreply.php?do=newreply&p=1210747http://en.wikipedia.org/wiki/Dipole_loudspeakerhttp://www.djsociety.org/Speaker_1.htmhttp://www.integracoustics.com/MUG/MUG/articles/sources/http://www.polkaudio.com/downloads/hthandbook.pdfhttp://www.bobgolds.com/DipoleSurrounds/home.htmhttp://media-server.amazon.com/media/mole/MANUAL000035963.pdf?tag=blurayforum-20http://www.bwspeakers.com/downloadfile/speakermodel/DS7_manual.pdfhttp://66.218.69.11/search/cache?ei=UTF-8&p=advantages+of+bipole+vs+dipole&xa=EZLulHCiI6iM8FSFQPWDPw--,1222163486&fr=yfp-t-501&u=www.harmanaudio.com/all_about_audio/audio_art_science.pdf&w=advantages+advantage+bipole+vs+dipole&d=ZxpjePReRYZF&icp=1&.intl=ushttp://www.harman.com/wp/pdf/HowManyChannels.pdfhttp://www.approvedarticles.com/Article/Home-Theatre-Speakers---What-You-Need-To-Know/495http://www.harman.com/wp/pdf/LoudspeakersandRoomsPt1.pdfhttp://www.harman.com/wp/pdf/LoudspeakersandRoomsPt2.pdfhttp://www.harman.com/wp/pdf/LoudspeakersandRoomsPt3.pdfhttp://www.electronichouse.com/article/whats_the_difference_between_bipole_and_dipole/C91/index.php/?cr=onhttp://www.audioholics.com/news/on-location-articles/home-theater-cruise-panel-2-setting-a-new-surround-sound-standardhttp://www.aesnashville.org/PDFs/Technical/Dolby/Dolby%20Digital%20FAQs.pdfhttp://www.hometheatershack.com/forums/home-audio-speakers/11299-bipolar-dipolar-better.htmlhttp://www.diyaudio.com/forums/showthread.php?postid=445666http://www.electronichouse.com/article/surround_sound_bipole_dipole_direct_speakers/http://www.buyingloudspeakers.com/Speaker%20Enclosure.htmhttp://forum.blu-ray.com/1210748-post2.htmlhttp://forum.blu-ray.com/member.php?u=21086http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/gallery.php?member=Big%20Daddyhttp://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=Big%20Daddyhttp://forum.blu-ray.com/speakers/93873-bipolar-dipolar-surround-speaker-manufacturers.htmlhttp://forum.blu-ray.com/speakers/93873-bipolar-dipolar-surround-speaker-manufacturers.html


23/32

10-08-2008, 11:20 PM#3(permalink)

Driver_KingBlu-ray Ninja

Top contributorMember since:Jan 2008

Location:Tampa Bay,Florida

Home Theater Gallery:96

Blu-ray collection:28

Trading Score:10

Excellent job. Automatic sticky.

My recommended setup for Home Theater Virgins:

Speakers: Polk Monitor 50's, Polk Monitor 40's, Polk CS2 Center,

and eD subwoofer orHTIB: Polk 5.1 system and

Receiver: Non-Network Onkyo TX-SR608 or Onkyo HT-RC180 Network Receiver

Monoprice-For allyour cable needs...

Personal Setup + Subwoofer

10-08-2008, 11:24 PM#4(permalink)

cravnsnBanned

Member since:Aug 2008Ah, but what about the "Omnipolar"?

10-08-2008, 11:30 PM#5(permalink)

Big DaddyModerator Quote:

Originally Posted by cravnsnAh, but what about the "Omnipolar"?

It is a good point. I only have so much time. If you provide me

with references and some material, I will gladly add them in the
http://forum.blu-ray.com/1210881-post3.htmlhttp://forum.blu-ray.com/member.php?u=19431http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/gallery.php?member=Driver_Kinghttp://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=Driver_Kinghttp://www.blu-ray.com/link/link.php?url=http://forum.blu-ray.com/itrader.php?u=19431http://goo.gl/FKCyChttp://goo.gl/xFkCNhttp://goo.gl/pClpThttp://goo.gl/93mf0http://goo.gl/apHK7http://goo.gl/uoZ0chttp://goo.gl/ORIbPhttp://goo.gl/MEjJZhttp://goo.gl/MEjJZhttp://goo.gl/RTd35http://goo.gl/9E7skhttp://goo.gl/seQ1Shttp://forum.blu-ray.com/1210896-post4.htmlhttp://forum.blu-ray.com/member.php?u=35296http://forum.blu-ray.com/1210918-post5.htmlhttp://forum.blu-ray.com/member.php?u=21086http://forum.blu-ray.com/speakers/66471-guide-bipolar-dipolar-direct-radiating-monopole-surround-speakers-part-i.html#post1210896http://forum.blu-ray.com/newreply.php?do=newreply&p=1210896http://forum.blu-ray.com/newreply.php?do=newreply&p=1210881http://forum.blu-ray.com/member.php?u=19431http://forum.blu-ray.com/newreply.php?do=newreply&p=1210748http://forum.blu-ray.com/1210881-post3.htmlhttp://forum.blu-ray.com/member.php?u=19431http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/gallery.php?member=Driver_Kinghttp://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=Driver_Kinghttp://www.blu-ray.com/link/link.php?url=http://forum.blu-ray.com/itrader.php?u=19431http://goo.gl/FKCyChttp://goo.gl/xFkCNhttp://goo.gl/pClpThttp://goo.gl/93mf0http://goo.gl/apHK7http://goo.gl/uoZ0chttp://goo.gl/ORIbPhttp://goo.gl/MEjJZhttp://goo.gl/MEjJZhttp://goo.gl/RTd35http://goo.gl/9E7skhttp://goo.gl/seQ1Shttp://forum.blu-ray.com/1210896-post4.htmlhttp://forum.blu-ray.com/member.php?u=35296http://forum.blu-ray.com/1210918-post5.htmlhttp://forum.blu-ray.com/member.php?u=21086


24/32

Member since:Jan 2008




future. It will even be better if you write it yourself. I promise I

will share all the royalties.HT Room: Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Denon AVR-4308CI Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Carver TFM-45 2-Ch. Amp.(375 W/Ch), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83,OPPO DV-980H, Audio Technica Tuntable, 2 Def. Tech. Super Towers w 15" subs, 1

Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Bose901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, Velodyne

SMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 PowerConditioners.Living Room: Carver 2-Ch. Preamp., Carver 2-Ch. Amp., Rotel CD player, MarantzTurntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 SuperTweeters, 2 DIY Folded-Horn Speakers W Fostex Full-Range Drivers & 2 Fostex SuperTweeters, 1 Modified AA HD-SUB12Family Room: Mitsubishi 73" Diamond Series TV, DirecTV HD-DVR, PS3, ZvoxSpeaker, 1 DIY 12" Sub.

10-08-2008, 11:33 PM#6(permalink)

mdabbPower Member


Trading Score:1

Great job Big Daddy!!! As always continuing to make this site a

better one.

10-08-2008, 11:39 PM#7(permalink)

RURBlu-ray Guru Great thread! Don't forget the potential for comb filtering with

dipoles.

For fun with interference patterns using a ripple tank, try this.Change "setup" to two sources (speakers), then dipole and then

move the speakers (using your mouse) to the room corners.It's never too late to have a happy childhood
http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/gallery.php?member=Big%20Daddyhttp://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=Big%20Daddyhttp://forum.blu-ray.com/1210926-post6.htmlhttp://forum.blu-ray.com/member.php?u=21091http://www.blu-ray.com/link/link.php?url=http://forum.blu-ray.com/itrader.php?u=21091http://forum.blu-ray.com/1210944-post7.htmlhttp://forum.blu-ray.com/member.php?u=4881http://www.falstad.com/ripple/http://forum.blu-ray.com/member.php?u=4881http://forum.blu-ray.com/newreply.php?do=newreply&p=1210926http://forum.blu-ray.com/member.php?u=21091http://forum.blu-ray.com/newreply.php?do=newreply&p=1210918http://forum.blu-ray.com/member.php?u=21086http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/gallery.php?member=Big%20Daddyhttp://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=Big%20Daddyhttp://forum.blu-ray.com/1210926-post6.htmlhttp://forum.blu-ray.com/member.php?u=21091http://www.blu-ray.com/link/link.php?url=http://forum.blu-ray.com/itrader.php?u=21091http://forum.blu-ray.com/1210944-post7.htmlhttp://forum.blu-ray.com/member.php?u=4881http://www.falstad.com/ripple/


25/32

Member since:Feb 2007

Location:Abiit, excessit,evasit, erupit


Trading Score:1

Martin Logan/Modwright Instruments/Rogue Audio/Vacuum TubeLogic/Denon/Sony/Panasonic/RealTraps/ASC

10-09-2008, 12:13 AM#8(permalink)

Big DaddyModerator





Quote:

Originally Posted by RURGreat thread! Don't forget the potential for comb filtering with

dipoles.

For fun with interference patterns using a ripple tank, trythis.

Change "setup" to two sources (speakers), then dipole andthen move the speakers (using your mouse) to the room

corners.

Thank you for the link. It is fun to play with the waves.HT Room: Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Denon AVR-4308CI Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Carver TFM-45 2-Ch. Amp.

(375 W/Ch), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83,OPPO DV-980H, Audio Technica Tuntable, 2 Def. Tech. Super Towers w 15" subs, 1Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Bose901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, VelodyneSMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 PowerConditioners.Living Room: Carver 2-Ch. Preamp., Carver 2-Ch. Amp., Rotel CD player, MarantzTurntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 SuperTweeters, 2 DIY Folded-Horn Speakers W Fostex Full-Range Drivers & 2 Fostex SuperTweeters, 1 Modified AA HD-SUB12Family Room: Mitsubishi 73" Diamond Series TV, DirecTV HD-DVR, PS3, ZvoxSpeaker, 1 DIY 12" Sub.

10-09-2008, 12:38 AM#9(permalink)

prerichModerator

Excellent Big Daddy!!!! JUST EXCELLENT!!!!!Audio Note AN-E/D (modded Snell E) (LCR), Klipsch Heresy LCR backup, InfinityKappa RS6b's (LCR) backup Definitive Technology BP2's (x4) rear, DefinitiveTechnology BP1's presence speakers, Wharfedale sw380 Subs (x2), 2-8 inchtransmission line Subs (rear), Yamaha RX-V663BL, Yamaha power Amps- M-80,mx830 (x2), XM 6150 6channel (bridged to 3), Sony TA-N80ES Power Amp,LG BH-200
http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=RURhttp://www.blu-ray.com/link/link.php?url=http://forum.blu-ray.com/itrader.php?u=4881http://forum.blu-ray.com/1211019-post8.htmlhttp://forum.blu-ray.com/member.php?u=21086http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/gallery.php?member=Big%20Daddyhttp://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=Big%20Daddyhttp://www.falstad.com/ripple/http://forum.blu-ray.com/1211072-post9.htmlhttp://forum.blu-ray.com/member.php?u=18403http://forum.blu-ray.com/newreply.php?do=newreply&p=1211019http://forum.blu-ray.com/speakers/66471-guide-bipolar-dipolar-direct-radiating-monopole-surround-speakers-part-i.html#post1210944http://forum.blu-ray.com/member.php?u=21086http://forum.blu-ray.com/newreply.php?do=newreply&p=1210944http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=RURhttp://www.blu-ray.com/link/link.php?url=http://forum.blu-ray.com/itrader.php?u=4881http://forum.blu-ray.com/1211019-post8.htmlhttp://forum.blu-ray.com/member.php?u=21086http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/gallery.php?member=Big%20Daddyhttp://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=Big%20Daddyhttp://www.falstad.com/ripple/http://forum.blu-ray.com/1211072-post9.htmlhttp://forum.blu-ray.com/member.php?u=18403


26/32

Top contributor

Member since:Dec 2007


Blu-ray reviews:1

Super Blu player, BD/HD-DVD-HTPC, Da-lite 16:9 106" Screen, Panasonic Projector,Phillips 42 inch HDTV.

10-09-2008, 01:06 AM#10(permalink)

JJBlu-ray Champion

Member since:Jul 2007

Location:Miami, HollywoodFL



PS3 collection:19

Blu-ray reviews: 18

Trading Score:48

See, I want to know how many people had this thread gocompletely over their head.

Great read though, Daddy-O, I've been meaning to understand

how dipole surround speakers work.

- I have to stop wandering into the wrong threads...================

Pioneer - B&W - KEF - Monitor Audio - Martin Logan - Sony -Emotiva - Marantz

Check out JJs Theater! -View the HT- Latest Changes! Feb 2011Fox Concepts, Inc.

Recommended Reading - JJ Reviews His Own Home Theater

10-09-2008, 04:35 AM#11(permalink)

Big DaddyModerator
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Quote:

Originally Posted by JJxiv1215See, I want to know how many people had this thread go

completely over their head.

Great read though, Daddy-O, I've been meaning to understandhow dipole surround speakers work.

I have to admit that it went completely over my head.HT Room: Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Denon AVR-4308CI Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Carver TFM-45 2-Ch. Amp.(375 W/Ch), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83,OPPO DV-980H, Audio Technica Tuntable, 2 Def. Tech. Super Towers w 15" subs, 1Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Bose901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, VelodyneSMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 PowerConditioners.Living Room: Carver 2-Ch. Preamp., Carver 2-Ch. Amp., Rotel CD player, MarantzTurntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 SuperTweeters, 2 DIY Folded-Horn Speakers W Fostex Full-Range Drivers & 2 Fostex Super

Tweeters, 1 Modified AA HD-SUB12Family Room: Mitsubishi 73" Diamond Series TV, DirecTV HD-DVR, PS3, ZvoxSpeaker, 1 DIY 12" Sub.

10-09-2008, 07:43 PM#12(permalink)


Top contributor




Blu-ray collection:28Trading Score:10

Elemental Designs makes custom dipole speakers. You shouldadd them to your list.


Speakers: Polk Monitor 50's, Polk Monitor 40's, Polk CS2 Center,and eD subwoofer or

HTIB: Polk 5.1 system andReceiver: Non-Network Onkyo TX-SR608 or Onkyo HT-

RC180 Network ReceiverMonoprice-For allyour cable needs...


10-09-2008, 10:21 PM#13(permalink)
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28/32

Big DaddyModerator


Location:Southern

CaliforniaHome Theater Gallery:79


Quote:

Originally Posted by Driver_KingElemental Designs makes custom dipole speakers. You shouldadd them to your list.

Are you sure they are dipole speakers? The only information Iget is that they are MTM speakers. Horizontal MTM speakers are

usually built for center channel.HT Room: Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Denon AVR-4308CI Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Carver TFM-45 2-Ch. Amp.(375 W/Ch), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83,OPPO DV-980H, Audio Technica Tuntable, 2 Def. Tech. Super Towers w 15" subs, 1Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Bose

901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, VelodyneSMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 PowerConditioners.Living Room: Carver 2-Ch. Preamp., Carver 2-Ch. Amp., Rotel CD player, MarantzTurntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 SuperTweeters, 2 DIY Folded-Horn Speakers W Fostex Full-Range Drivers & 2 Fostex SuperTweeters, 1 Modified AA HD-SUB12Family Room: Mitsubishi 73" Diamond Series TV, DirecTV HD-DVR, PS3, ZvoxSpeaker, 1 DIY 12" Sub.

10-09-2008, 11:39 PM#14(permalink)


Top contributor



Home Theater Gallery:96Blu-ray collection:28

Trading Score:10

No, they posted pictures on their blog a while back. They weredefinitely dipoles.

Custom dipoles finally left last week.


Speakers: Polk Monitor 50's, Polk Monitor 40's, Polk CS2 Center,

and eD subwoofer orHTIB: Polk 5.1 system and

Receiver: Non-Network Onkyo TX-SR608 or Onkyo HT-
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29/32

RC180 Network ReceiverMonoprice-For allyour cable needs...


Last edited by Driver_King; 10-10-2008 at02:03 AM.

10-09-2008, 11:46 PM#15(permalink)

arush5268dBanned


Location:Houston, TX


Great information!

If you are going for a record for the number of sticky threadscreated by one member....well you might already hold that title.

Thanks for the information!

10-10-2008, 12:39 AM#16(permalink)

Big DaddyModerator


Location:Southern

Quote:

Originally Posted by Driver_KingNo, they posted pictures on theirblog a while back. They weredefinitely dipoles.

Custom dipoles finally left last week.

I added Elemental Design to the list.HT Room: Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Denon AVR-4308CI Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Carver TFM-45 2-Ch. Amp.(375 W/Ch), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83,OPPO DV-980H, Audio Technica Tuntable, 2 Def. Tech. Super Towers w 15" subs, 1Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Bose901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, VelodyneSMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 PowerConditioners.Living Room: Carver 2-Ch. Preamp., Carver 2-Ch. Amp., Rotel CD player, Marantz
http://goo.gl/MEjJZhttp://goo.gl/RTd35http://goo.gl/9E7skhttp://goo.gl/seQ1Shttp://forum.blu-ray.com/1213844-post15.htmlhttp://forum.blu-ray.com/member.php?u=21357http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=arush5268dhttp://forum.blu-ray.com/1213977-post16.htmlhttp://forum.blu-ray.com/member.php?u=21086http://blog.edesignaudio.com/?p=315http://forum.blu-ray.com/speakers/66471-guide-bipolar-dipolar-direct-radiating-monopole-surround-speakers-part-i.html#post1213824http://forum.blu-ray.com/member.php?u=21086http://forum.blu-ray.com/newreply.php?do=newreply&p=1213844http://forum.blu-ray.com/speakers/66471-guide-bipolar-dipolar-direct-radiating-monopole-surround-speakers-part-i.htmlhttp://forum.blu-ray.com/speakers/66471-guide-bipolar-dipolar-direct-radiating-monopole-surround-speakers-part-i.htmlhttp://forum.blu-ray.com/member.php?u=21357http://forum.blu-ray.com/newreply.php?do=newreply&p=1213824http://goo.gl/MEjJZhttp://goo.gl/RTd35http://goo.gl/9E7skhttp://goo.gl/seQ1Shttp://forum.blu-ray.com/1213844-post15.htmlhttp://forum.blu-ray.com/member.php?u=21357http://www.blu-ray.com/link/link.php?url=http://www.blu-ray.com/community/collection.php?member=arush5268dhttp://forum.blu-ray.com/1213977-post16.htmlhttp://forum.blu-ray.com/member.php?u=21086http://blog.edesignaudio.com/?p=315


30/32

California



Turntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 SuperTweeters, 2 DIY Folded-Horn Speakers W Fostex Full-Range Drivers & 2 Fostex Super


10-10-2008, 12:44 AM#17(permalink)

mdabbPower Member


Trading Score:1

I pretty sure Revel has dipole speakers as well............

10-10-2008, 12:56 AM#18(permalink)

RURBlu-ray Guru

Member since:Feb 2007

Location:Abiit, excessit,evasit, erupit


Trading Score:1

As well as most Martin Logans.It's never too late to have a happy childhood

Martin Logan/Modwright Instruments/Rogue Audio/Vacuum TubeLogic/Denon/Sony/Panasonic/RealTraps/ASC

10-10-2008, 01:03 AM#19(permalink)

Big Daddy
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31/32

Moderator





Quote:

Originally Posted by mdabbI pretty sure Revel has dipole speakers as well............

I added Revel. Thank you.HT Room: Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Denon AVR-4308CI Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Carver TFM-45 2-Ch. Amp.(375 W/Ch), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83,OPPO DV-980H, Audio Technica Tuntable, 2 Def. Tech. Super Towers w 15" subs, 1Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Bose901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, VelodyneSMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 PowerConditioners.Living Room: Carver 2-Ch. Preamp., Carver 2-Ch. Amp., Rotel CD player, MarantzTurntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 SuperTweeters, 2 DIY Folded-Horn Speakers W Fostex Full-Range Drivers & 2 Fostex Super


10-10-2008, 01:04 AM#20(permalink)

Big DaddyModerator


Location:Southern

CaliforniaHome Theater Gallery:79


Quote:

Originally Posted by RURAs well as most Martin Logans.

I can't find any information about their Bipole/Dipole speakers.http://www.us.martinlogan.com/frontpage.htmlHT Room: Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Denon AVR-4308CI Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Carver TFM-45 2-Ch. Amp.(375 W/Ch), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83,

OPPO DV-980H, Audio Technica Tuntable, 2 Def. Tech. Super Towers w 15" subs, 1Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Bose901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, VelodyneSMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 PowerConditioners.Living Room: Carver 2-Ch. Preamp., Carver 2-Ch. Amp., Rotel CD player, MarantzTurntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 SuperTweeters, 2 DIY Folded-Horn Speakers W Fostex Full-Range Drivers & 2 Fostex Super


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