Kinser Posted May 25, 2010 Author Report Share Posted May 25, 2010 something just came to mind.. both amps are grounded to the same spot, yet only the mono block seems to be grounding through the RCA's..therefor i think something is F@#cked in the amp. which is a real bummer for me =\\. where should i start from? i guess the DC-DC power supply would be the only possible cause. Quote Link to comment Share on other sites More sharing options...
Kinser Posted May 25, 2010 Author Report Share Posted May 25, 2010 If i put a 100 ohm 1/2W resistor on the ground between the amp and HU would it do any good? either way ill go tmrw and get some thick healthy ground wire, run it straight from the battery! hope that does the trick Quote Link to comment Share on other sites More sharing options...
dkindle613 Posted May 25, 2010 Report Share Posted May 25, 2010 Hey Guy, name is David new to the SMD forum! Little Intro on my system before i start... Sub, TC Sounds 12" DVC TC2000 in a 74L ported box tuned to 26Hz IIRC running on a Mac Audio Fearless 1000 Monoblock. HU, Pioneer DEH-P5950, JBL Components running on a crap 4ch amp. stock electrical system. story goes like this.. about a year i had both amps running straight off my PSP, had no HU back then. one day the RCA wire coming from the Mac Audio just melted down, replaced it and worked fine. while after that hooked up a friends HU, the idiot uped the volume before i had a chance to lower the gain and the internal ground wire from the PCB to the RCA jacks burned out. replaced that and the amp worked fine. got the Pioneer HU a couple of months ago. the pico fuse went POP so i did the ghetto fix grounding the RCA's to the HU body, worked fine after that. this morning on my way to work, playing Late Night Tip, the 4ch amp touched the mono block, head a thump from the sub, next thing the sub RCA's wire started melting and burning about a foot away from the HU. switched it all off pulled out the fuses and carried on to work. i suspect that the mono block is trying to ground itself through the RCA jack on the amp. cant understand why though, got a 2 gauge healthy ground wire on a nice smooth spot on the floor-pan. dunno what to do anymore, ran out of ideas! appreciate any help Thanks, David :cool story bro: Quote WARNING: I speak 4 languages, profanity, English, sarcasm & real shit 2003 ford explorer 2 RF T1 D4 15s in a 6.8 cubic ft box 1 T1500.1bdcp 250amp ALT by Mike Singer 2 runs of 0 gauge 3 yellow tops Link to comment Share on other sites More sharing options...
Kinser Posted May 26, 2010 Author Report Share Posted May 26, 2010 (edited) dropped the amp back in.. getting B+ (as in 12v)on the RCA ground!! got this reading on the DMM when the amp was turned off so i assume it would still have B+ on the signal ground when on. anyone seen this before? Edited May 26, 2010 by Kinser Quote Link to comment Share on other sites More sharing options...
Boon Posted May 30, 2010 Report Share Posted May 30, 2010 dropped the amp back in.. getting B+ (as in 12v)on the RCA ground!! got this reading on the DMM when the amp was turned off so i assume it would still have B+ on the signal ground when on. anyone seen this before? Yeah man. Shorted primary in the amps transformer windings. Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
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