xti4000 clipping before zero
Posted 15 May 2011 - 09:37 AM
Also I've heard other JBL728 like mine and they seem to bump like crazy. Does anyone have any suggestions on how to get the most out of one xti4000 for every srx725 and 728 in bridge mono mode.
Posted 16 May 2011 - 08:24 AM
Frankly the XTi4k is the absolute smallest amp to match up to the SRX's. To help them survive, use a highpass filter at 40Hz or so (on all speakers) and experiment with broad, low-Q cut filters in the 60-120Hz range. The idea of the filters is to unburden the amp load in the regions where the impedance is at a minimum -- just below and just above resonance. It would help if you had the impedance plots for the cabinets, but JBL does not publish these.
Posted 16 May 2011 - 10:21 AM
Posted 16 May 2011 - 11:34 AM
Also I'm saying to do a highpass at 40Hz (not lowpass) and to experiment with cut filtering...even a mild -3dB would help, but you need to find the sweet spot to put it to get the most benefit.
Posted 16 May 2011 - 02:17 PM
Also I have four xti4000 in a rack. These amps are selfsensing voltage if I remember correctly. So that being said what would be the most ideal method to power the rack electrically.
Posted 17 May 2011 - 08:15 AM
Posted 17 May 2011 - 09:18 AM
Posted 17 May 2011 - 09:33 AM
Posted 25 July 2011 - 03:41 PM
Posted 26 July 2011 - 10:15 AM
Ideally you'd want a MA5000i on a pair of 725's, and a MA9000i on a pair of 728's, each running stereo.
For the SRX715's, you can use a single XTi2k or 4k (or XLS2500) running bridge-mono into each speaker.
Check out the meters in Band Manager to see if you are getting input and/or output clipping.