Halo C2 Bass management

[Chetk]

It was long ago, but if I remember correctly, I think I put pink noise through it and sat in my seating position. I tried the switch in both postions. Whichever was louder from the seating position, I used.

PHASING TEST METHOD TWO

First, set the toggle switch labelled "PHASE" to the "+" position. Then, feed wideband pink noise (found on test CDs, the THX "Wow" disc, or a pink noise generator) through your front channel speakers and your subwoofer. You can do this test by listening, but it is best to use a spectrum analyzer and look at its display in the "mid-bass" region of 70 - 125 Hz.

Then, reverse the position of the "PHASE" switch. If it is set to the "+" position, set it to the "-" position. If it was set to the "-" position, set it to the "+" position. The best way is to have a partner work the switch while you sit in the main listening position and listen.

Now, listen to the same wideband pink noise or look at the spectrum analyzer output in the midbass region. If you hear/measure less bass, set the "PHASE" switch to the opposite position. If you hear/measure more bass, leave the switch alone; the new position is correct.

This test is necessary because the different distances from each speaker to your ears mean that it is possible that the Subwoofer's output may arrive at your ears out of phase with the Satellites' THX subwoofers page 13 output. When this happens, the midbass is cancelled. Re-do this test any time you move any of your speakers or the listening position.

If you want to experiment, move the main speakers or subwoofer towards or away from your listening position, in small increments. When you hear the best combination of stereo image localization and focus with solid midbass impact and output, you have the ideal location.

[Peter Nielsen]

It was long ago, but if I remember correctly, I think I put pink noise through it and sat in my seating position. I tried the switch in both postions. Whichever was louder from the seating position, I used.

Aha! That does not mean it's truely correct. You only got the closest of two available options (0 and 180) of 360 degrees.

The correct phase may be something in between...

Peter

[Chetk]

But that's the best I can do right? Other than move the sub, there's nothing I can do.

[Peter Nielsen]

But that's the best I can do right? Other than move the sub, there's nothing I can do.

That's the best you can do with your current equipment, yes. However, if I'm not mistaken a Behringer Feedback Destroyer (~$100?) can provide better phase adjustment...

Peter

[Chetk]

Thanks Peter.

[Chris D]

Hmmmm, I don't think that the BFD can do phase adjustment. It's essentially a parametric equalizer with all sorts of band adjustments.