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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Adding additional subs almost always results in smoothing. posted by Duke on March 9, 2007 at 09:29:21:
First lend me $10,000 so I can bet you.When will I pay you back?
On payday.
When's payday?
You ought to know, you're the one who's working.
I can eliminate all bass peaks for one listening seat with a $150 digital parametric EQ.
You go spend thousands for additional subwoofers.
Put any of your "scattered" subwoofers far from the two main speakers and you will distort the intended stereo image/soundstage from the FRONT of the room.
Put all of your "scattered" subs on the floor (typical placement) and you will cause maximum excitation of the dreaded 71Hz. floor to ceiling standing wave bass peak -- often excited by bass guitar notes and kick drums.
Put two subs on the floor, and put two subs near the ceiling, and you will most likely hear a buzzing / rattling plasterboard ceiling that will make the bass sound worse than a distorted $100 Radio Shlock subwoofer in a back corner of your room!
1/4 wavelength cancellations off nearby walls are not important at subwoofer frequencies because subwoofer wavelengths are 15 feet and longer.
While 1/4 wavelength cancellations can be serious problems in the upper bass (over 80Hz.), that's above a subwoofer's range.
Tom Nousaine says the sub scattering (5 surround subs located near the five surround speakers) theory does not work for two-channel or surround sound based on measurements in real rooms.
And let's not forget the experts who don't agree with you ... not to mention the fact that no two subwoofer placement "experts" agree with each other!
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Richard BassNut Greene
Subjective Audiophile 2007
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Follow Ups
- $10,000 says my one subwoofer + parametric EQ will be smoother than your three or four subwoofers in 9 out of 10 rooms - Richard BassNut Greene 13:40:32 03/09/07 (10)
- Depends on parameters of the contest - Duke 14:13:09 03/09/07 (9)
- Three or four "scattered subwoofers" all located on the floor = sonic disaster - Richard BassNut Greene 09:23:41 03/10/07 (8)
- not true - Duke 13:58:37 03/10/07 (7)
- Re: some comments - twelti 15:54:39 03/11/07 (6)
- Your paper applies to surround sound but many readers assume 4 subs are best for two-channel - Richard BassNut Greene 08:31:20 03/12/07 (2)
- Re: Your paper applies to surround sound but many readers assume 4 subs are best for two-channel - twelti 21:45:37 03/12/07 (1)
- My mind is open on a third or fourth subwoofer for two channel audio. You seem to have only conclusions. - Richard BassNut Greene 08:53:53 03/13/07 (0)
- Re: some comments - Duke 16:22:24 03/11/07 (2)
- Re: some comments - twelti 19:12:15 03/11/07 (1)
- "Heated exchange"??? - Richard BassNut Greene 09:12:33 03/12/07 (0)
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