Actually it's the other way around on your meter readings. Your Rat Shack meter is less efficient at reading lower frequencies. You ADD the compensation factor to your meter reading.
If you have the sub distance set up properly in your receiver, you will not need to vary far from 0 degrees on your sub phase. I just spent most of yesterday playing with the phase on my SVS PB2-isd. Fun isn't it. What sounds like the most bass is not necessarily correct and most likely not the flattest response.
And the flattest response should be the best. Try playing a test tone at your crossover frequency, say 80hz, then set the phase to give the loudest reading on your meter.
Taken from: http://www.svsubwoofers.com/faq_rscomp.htm
"The problem? The Radio Shack sound meter is not totally "linear" in its accuracy down there. All such meters are off by the same amount depending on the frequency however, which is good news! So that while its sensitivity below 20Hz is not what it is at 50Hz, there is a simple way to compensate for this deficiency."
At 10Hz add 20dBs to the meter's readings and at ...
12Hz add 16.5dB
16Hz add 11.5dB
20Hz add 7.5dB
25Hz add 5dB
31.5Hz add 3dB
40Hz add 2.5dB
50Hz add 1.5dB
63Hz add 1.5dB
80Hz add 1.5dB
100Hz add 2dB
125Hz add .5dB
Last edited by al1en; 04/12/04 04:43 PM.
