Join Date: Apr 2003
Location: Grimsby, Ontario, Canada
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this is disappointing...
While I gained something from the exercise - hadn't done any measuring in my system in a long time - the anti-mode 8033s-ii is back in the box ready to go back unless DSPeaker's tech people can help me out. During calibration it turned up the gain on my Paradigm Servo-15 sub well beyond the ability of my Anthem AVM 20 to correct it - well over 10dB, in fact more than 15dB. I tried re-calibrating, but to no avail. I already turned the sub down to 20/100, and turning it down even further after calibration seems to do nothing.
Much of the boom I was concerned with was because the .1 channel on my Oppo bdp-95 runs close to 10 dB hot. I never had this issue with the Esoteric DV-50 and just didn't think to test it. My large (16.5' x 30' x 9.5') and soft (much upholstery, carpet, drapes, wood floor, 1840's construction) is fairly benign (with a 40 Hz crossover) apart from a narrow 4 dB bump around the first axial mode at 34 Hz.
Anyway, I'll be sad to send this thing back without a thorough trial, but I can't think what to do differently.
Oops! I wasn't using BM with the Esoteric, because it only did BM for DVDs, and my Anthem AVM 20 does that. I was applying the LFE calibration to the 7.1 outputs of the Oppo through my ICBM-1 bass manager! Okay, but that still doesn't explain the bass gain in my Anthem.
Fixed. Stupid user error and now the anti-mode is working fine.
Last edited by Jim Pearce; 01-18-2017 at 08:49 AM.