My testing was with the computer plugged directly into the BFD. No other speakers were powered during the sub test. The only sound should be from the subs through the BFD, so even though my receiver (when it is connected) will be crossed over at 80 hz, shouldn't I be able to control the freqeuncies above 120?
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Why do you feel you need equalization with a great response like that?
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I guess I was looking to flatten out the curve, and make sure it wasn't interfering with my mains. The graphs look much worse without the smoothing.
You may (or not) remember that I have three subs, 2 - 10" and 1 - 15". I spent an hour or two just moving subs, and adjusting volume, phase, xover and boost parameters on the sub system. I have all 3 subs side by side, as this was the best configuration based on empirical testing.
The sub system gets its signal from a Yamaha receiver's sub out (or from REW during testing) that is split into two input channels of the BFD, which drives a NAD amp. The main outputs of the NAD go into the two 10's and into the high level input of the 380 watt plate amp on the Rythmik Audio 15".
What other testing would you recommend? Can I test for persistence (echo, hangover, boom) of bass signal? Of course I would need room treatments to resolve that.
Paul