What is your AVR setting when calibrating your sub?

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McLoki
McLoki Posts: 5,231
edited June 2005 in Subwoofer Hookup & Bass Management
ok, so I am about ready to tear down my house and build a new one. (ok, maybe just a dedicated home theater room)

This is the best that I can get out of my sub. It does graph much worse than it sounds, but still - it looks ugly....

One question, when you all apply a BFD or other equalizer, do you put your AVR in stereo mode, pro-logic, or turn off all your other speakers when trying to calibrate your sub to your system?

The following graph is from stereo mode, before and after BFD - no gains, just cuts.

I am pretty sure the 80hz peak is coming from the poor placement of my front speakers, the big nulls are coming from a bad room design for HT.

Michael
Mains.............Polk LSi15 (Cherry)
Center............Polk LSiC (Crossover upgraded)
Surrounds.......Polk LSi7 (Gloss Black - wood sides removed and crossovers upgraded)
Subwoofers.....SVS 25-31 CS+ and PC+ (both 20hz tune)
Pre\Pro...........NAD T163 (Modded with LM4562 opamps)
Amplifier.........Cinepro 3k6 (6-channel, 500wpc@4ohms)
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  • McLoki
    McLoki Posts: 5,231
    edited June 2005
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    Well, managed to mess up the image - here it is again....
    Mains.............Polk LSi15 (Cherry)
    Center............Polk LSiC (Crossover upgraded)
    Surrounds.......Polk LSi7 (Gloss Black - wood sides removed and crossovers upgraded)
    Subwoofers.....SVS 25-31 CS+ and PC+ (both 20hz tune)
    Pre\Pro...........NAD T163 (Modded with LM4562 opamps)
    Amplifier.........Cinepro 3k6 (6-channel, 500wpc@4ohms)
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  • Dr. Spec
    Dr. Spec Posts: 3,780
    edited June 2005
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    Two words: Bass Traps :)
    "What we do in life echoes in eternity"

    Ed Mullen (emullen@svsound.com)
    Director - Technology and Customer Service
    SVS
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  • opus
    opus Posts: 1,252
    edited June 2005
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    Wow, you said it was ugly. You weren't kidding:D

    I always put it in stereo mode and unhook the fronts. Not sure if this is right. But I have always been more interested in what happens down low and when I do a graph with the fronts hookled up it is very similiar in this range.
    Anyway I am curious to hear the "proper" way to do this.


    kevin
    The Flea rig
    Hitachi 50VG825 LCD
    Rotel RSP 1066 (pre) :)-flea market
    B&K St-202 (mains)-flea market
    Carver M 200t (x2) (center and surrounds)-flea market
    Blu-Ray..PS3 (dvd player)
    Polk RTA-11t-flea market
    LsiC, Fxi30's
    Dual SVS PC-Utra's (1 port blocked) thanks MikeC78
    Behringer Feedback Destroyer    -flea market
    AudioAlchemy DDE v1.0 DAC-flea market
    Cambridge Audio Azur 640 CDP-flea market
    Signal Cable and Kimber Kable
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  • McLoki
    McLoki Posts: 5,231
    edited June 2005
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    Here is the graph when I use sub alone. (all speakers turned down at the amp. Crossover is still active though... (80hz))
    Mains.............Polk LSi15 (Cherry)
    Center............Polk LSiC (Crossover upgraded)
    Surrounds.......Polk LSi7 (Gloss Black - wood sides removed and crossovers upgraded)
    Subwoofers.....SVS 25-31 CS+ and PC+ (both 20hz tune)
    Pre\Pro...........NAD T163 (Modded with LM4562 opamps)
    Amplifier.........Cinepro 3k6 (6-channel, 500wpc@4ohms)
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