WDTS

[hazebrewer]

Good day!

I've seen the term WDTS used in disucssingthe S-1 speaker, I think in distinguishing it from di-pole or bi-pole. Can someone please explain WDTS and/or S-1s with regards to di-pole/bi-pole?

Tx!

hazebrewer

[colterphoto1]

Wide Dispersion Surround Technology

I'll let you fellas have a stab at it first...

[Bill H.]

See post below..................

[Bill H.]

Taken from AVS Form on this exact question:

if calibrated properly, the RB-61 should be the exact same loudness as the RS-52.



The key difference between these two speakers is their off-axis sound
dispersion. The RS-52 is a bipole design, (two sets of drivers firing
in phase with each other). They also have Klipsch's WDST, (Wide
Dispersion Surround Technology.) They radiate a 180 degree dispersion
pattern that sends equal volumes of all frequencies throughout the room.



This is different than a dipole. A dipole looks the same as a bipole,
but the drivers fire out-of-phase, which creates a "null" in the
forward axis of the speaker. All the sound energy from a dipole is
directed to the front and rear of the room, (assuming they are properly
mounted at the listeners sides), and nothing is directed forward.
Dipoles sound very "diffuse" and non-directional.

[tommyboy]

[*-)] WDST? I thought it was we do silly things? When it comes to audio.........

[hazebrewer]

Great! Helpful. Di-pole speakers supposdly have a "null" area andthe viewer listener would sit in this field. How does one approach placement then when you have 180 degree dispersal?

hazebrewer (happiness is a UPS tarcking number!)

[tommyboy]

If you mean where to put the surrounds, put them directly on the side of your listening area; like right next to the couch, about 6 ft. off the ground.

[tommyboy]

If you have no room on the sides, etc. they can be placed behind you on the back wall as well. But only do that if you don't have the means to put them on the sides...............

[colterphoto1]

go to a real cinema

look up

see that long row of speakers?

that's what we're trying to imitate

[RockOn4Klipsch]

Wide Dispersion Sound Technology

just as it sounds, Wide sound if you use direct radiating speakers as surrounds if you sit of axis you will know that the sound is either ahead of you or behind you. WDSTis to disperse sound in 180 degrees to help eliminate being stuck in one location for listening purposes. As a previous poster said at a cinema there are 6 speakers or so on each wall that are direct radiating speakers so we are trying to simulate the effect of having sound all around us. I don't have 22 speakers in my listening room ....but some may.

[Trey Cannon]

W.D.S.T.

1) Klipsch Wide Dispersion Surround Technology surround speakers take a different approach to surround coverage than dipole and bipole surrounds. a) Dipole models place drivers out of polarity to create a null on one axis of the speaker. It is popular to sit in the null, thus the loudest sounds come from indirect radiation from the speaker. A dipole, used in this manner creates a diffuse and non-localized rear sound field.i) Some drawbacks to dipole surrounds include that the rear sound field is not confined to the rear. As much radiation is radiated forward as rearward. ii) A dipole also depends on other surfaces in the room to reflect the sound to the listener. iii) A dipole can only create a diffuse rear sound field.

iv) Finally, a dipole is very inefficient at low frequencies, as the out of phase bass cancels.

Bipole models place drivers on several faces, with the idea that the radiation is equal in all directions, like a point source. i) The problem is that the drivers interact, and actually radiate sound very erratically, with a different frequency response in each direction.

ii) The sound field created is not coherent and as a result is not very realistic.

c) Klipsch WDST surrounds are very much like a professional concert array. The high frequencies, made directional by the horn, are arrayed at the proper angles to provide even coverage, or with the same frequency response in all directions. The single woofer is crossed over where it is omni directional, thus creating a system which truly radiates sound equally in all directions.

i) WDST models provide balanced direct and reverberant sound field to listeners. Since the response is the same in all directions, the reverberant sound filed reaching the listeners from other directions, is balanced spectrally with the direct sound, creating a coherent, realistic rear sound field.

Hows that for an answer?

[colterphoto1]

I like the part about the 'professional concert array', never heard it put quite like that.

Shoot mang, you could work in Tech Support! [Y]

Where are those guys anyway, they stop in any more?

M

[Trey Cannon]

SP will from time to time. They have no time.

[Joe Shmoe]

Another great example would be the KSP-S6'S []