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Amp output leveling help...
Posted: Tue Jun 17, 2008 11:49 am
by flogger11
Hey guys, I am about to hook up my ZX-450 bridged, one side to each voicecoil on my Treo SSi sub. My question is, what do I need and what procedure do I use to make sure my amp is putting the exact same amount of power on each voicecoil? I will be running both gains wide open, but I really want to be assured the power is exactly the same on each voicecoil. Thanks for the help everybody! Mike
Posted: Tue Jun 17, 2008 11:54 am
by stipud
Posted: Tue Jun 17, 2008 12:02 pm
by flogger11
Kinda what I need I guess. So just take a multi-meter, switch it to ??? setting, then test the output of each amp channel with no speaker hooked up, making sure each channel is producing the same amount of power? Is this correct? Would it matter what volume I test at? You wouldnt think it would matter...
Posted: Tue Jun 17, 2008 12:37 pm
by Bfowler
you would want to do it at a moderate to loud volume.
your multimeter only goes to a couple decimal places. as you increase voltage, if your numbers are off (beyond what the multimeter is showing you, say in the 100's or 1000's decimal place) those decimal places add up and can eventually turn into quite a power difference.
Posted: Tue Jun 17, 2008 1:03 pm
by fuzzysnuggleduck
Set your DMM to VAC (AC voltage). Makes sure you test with a 60Hz tone unless you have a "True RMS" DMM.
I suppose you could test all four channels independently only but I'd test it as you're going to have it setup (bridged) as well, just to make sure.
Test it with the same settings you plan on running the sub at.