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bchoice -> RE: ELECTRONICS DISCUSSION... Audio, Visual, Lighting... (7/29/2006 1:20:23 AM)
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You need to wire a 5v voltage regulator in between the 12v amp "on" wire from your head unit and the 2 amp "on" wires on the wiring harness. 12v is too much for the shaker amps and adding the 5v regulator fixes it. On the balance problem with the subs...well you are going to need a really good head unit or an xover/amp balancer. The main problem is the Shaker 1000, and I'm guessing the S500 as well, run the subs mono. There is a Hi and Low output from the Shaker 1000 that goes Hi to the front subs and Low to the rear subs. Everyone is getting the metra wiring harness which converts the High and Low inputs to the shaker sub amps to what appears to be left and right RCAs. You use the L/R sub RCAs out of the head unit and hook it up. You fire up your stereo and "pop" the amps turn on and boom boom boom. Appears to work great, but you cannot fade the front to rear and it sounds kinda funky. What you are hearing is L/R thru the main speakers and then L thru the front sub and R thru the rear or the other way around. Anyway, it kinda messes up your stereo in a twisted way. You can easily fix the "twisted phase" problem by using RCA Y connectors to mix the L/R to a combined signal then Y back out to the Red and White RCAs on the wiring harness. This effectively puts the subs back into mono. Now it's not twisted and sounds much better, but you still can't fade. This is where you need the dual amp fader with xover and lpf to really get it tuned. I have messed around alot with the S1000 trying to get it to sound acceptable to me. I am finally happy with the performance of the front and rear subs and amps, however I did replace everything else. I have an Alpine head unit and a sound processor with 2 front, center, rear, and sub outputs. I used front 1 for the front speakers, front 2 lpf'd for the front subs (effectively making them mid-bass), rear for the rear speakers, and sub running mono to the S1000 sub amps. Now I can fade the subs front to back and adjust the xover points, slope, and eq. Add some Kappas and a punch PA8004 and you have a pretty rockin system. Hope the info helps.
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