Quote:
Originally Posted by sivadselim /forum/post/15527085
As pointed out, you are not talking about group delay. I doubt YOU can hear group delay. You'd have to be very familiar with subwoofers and measuring their group delay to be able to say "Aha! I hear group delay!". What you perceive and are trying to describe as a "delay" in the bass is not group delay. It sounds like you are hearing what people sometimes describe as "slow" (as opposed to "fast") subwoofer performance. And there can be several things that can cause this.
Manipulating your distance setting is, basically, only going to affect your sub's phasing, which may be why you noticed a difference in the sound. And moving the sub, even only a few inches, can drastically affect its in-room FR. Have you calibrated your subwoofer properly? What have you done to assure or achieve the flattest FR possible for your setup? What have you done to properly adjust your sub's phase?
What are your speakers? And sub? Receiver? What settings are you using in the receiver; speaker sizes, crossover, etc.? Does your receiver have some sort of auto-calibration/EQ capability?
No, it doesn't work that way. And even if it did, increasing the subwoofer distance is going to make it fire sooner relative to his speakers. But you are correct that the (il)logic behind his solution is flawed.
I have a Denon 4806. The speakers(old Atlantic Tech-speakers)
is set to "small" and I split the signal at 80Hz. I think the phase is set to "0" on the sub.
I have done some "soundproofing" with some "super chunks" in the corners, from floor to ceiling. It made the sound from the sub a lot tighter. But I think I have some problem in the 60Hz area.
With the phase on the sub, I have tried to get the smoothest transition from the crossover setting. I think it sounds good. There is no apparent "dip" around 80Hz, not that I can hear easily, anyway.
All this is intentionally done without the automated EQ. I want to learn how to achieve a great sound before I learn how to make the process automated.
This include some crude methods, as physically move the sub to hear what happens. It is not that I dont trust my recievers Automated setup, It is just to learn by ear.
The issue with Group Delay is an idea that came from reading about "timing" in music. Have I not read about this, I had incorrectly used the term "slow" bass. My bass is not "slow". The whole setup sounds as if there where big speakers playing. Of course, my front speakers are not big(that will change as soon I get my JTR 8s), so I cant complaine over the sound. It will never "sound" as fullrange, but "almost".
It can go days before I hear something that resembles a "slow" bass. But when it does, I dont know what to blame. If it was the distance setting, I should hear it more often, right? I dont know...
I have a theory that some music have a bass-rythm that create an echo. The echo could be the problems I have with certain frequencies....(60Hz)....?
Robert