Originally Posted by markmon1
I have 2 BKA1000N's - I've had them since 2010 and they're still going strong so they must be the models that don't smoke
Will be interesting to see what m0j0's experience is on this regarding the input gain levels.
So, to follow-up, here's my experience so far:
I had a BKA-1000N that I was using to power 2 x BK's in an MBK configuration (ButtKickers mounted to the back of the seat just below the Boss Back JBL). It was pretty wicked and was really enjoying it so ordered 2 more BK's to mount to the outside seats, but before I could get everything setup across the board, my BKA amp went bad.
I ordered the NX3000 and have set it up in bridged mode running all 4 BK's in a series/parallel setup (with pos to +1 and neg to +2 on the neutrik connector going into Channel A on the NX).
I had started with some testing where I was running the BK's flat to 90Hz with no PEQ other than amp rolloff, and I have the volume turned up about 3/4 of the way (about 4 clicks from max). Sounded and felt decent, but felt like there was a little bit missing in the few demo clips I was running at the time. However, started watching the latest Star Wars and the BK's were going nuts, just bottoming out hard, so I began to dial back until just below the 1/2 mark. This seems to be all the power that I need right now, so no concerns with gain levels!
I did eventually switch my BK's over in the mDSP 2x4HD to use some PEQ (same PEQ as I am using with the cantilevered BK's now) and it was much better in terms of the feel/impact using the previously tested demo clips. I am very pleased with the feel of the MBK's now with the current amp gain levels at 1/2 and the PEQ settings on the mDSP (which includes a +4 gain in the mDSP). I wasn't sure if the NX would be able to push the BK's with the same level of intensity as the BKA amp, but so far, I am more than pleased with it and definitely consider it a good option if you have a BKA amp and it goes bad.
Here are the BK settings I am using currently (which I more or less took from how @SBuger
was running his cantilevered BK's before):
LS 15Hz, +7.0, Q0.8
LS 12Hz, +6.0, Q0.9
Negative HS 12Hz, -5.0, Q0.9
Negative HS 10 Hz, -3.0, Q0.9
Peak 10Hz, +2.0, Q1.0