well just the other day i was taking my box out of my trunk to cut out a piece of 3/8 plywood to sit under my trunk mat so my box would have something solid to sit on.
We took it out, which took a whiiile because i miscalculated my measurements before building my box and we built it a little too big for my trunk.. When i went to hook it back up, it was making a faint humming/ buzzing noise and wouldn't hardly hit at all. i thought maybe my ground was in a bad spot and one of my subs were disconnected.. everything is good that i can tell... help me? All i did was take my box out, unhook my amp, and change my ground location.
take a dmm to your ground and make sure its reading .4 or less otherwise bad ground. did you bump any settings on the gain? did you hook the wires back up correctly?
Wanna move that decimal a few places to the left? lmao. If you've got .4 ohms of resistence in your ground you've got seroius problems bud.
OP: You could have damaged the amp if you unhooked speaker wires without taking off the cars battery ground. ALWAYS disconnect battery ground before working on anything connected to live circuits. People who don't do it is how equipment gets damaged.
everything was hooked up correctly. and i even hooked my ground back up to it's original ground spot and still did the same thing.. and i always disconnect the negative on the battery. don't know why i didn't do it that time. I have to buy a new amp anyways, and am just going to buy new subs too. but i just wanted to know what the problem was and if i could do anything to fix it or prevent it from happening again??
Disconnect your negative terminal.... lol. Touching speaker wires to ground (or anything really) is a very easy way to damage an amplifier, one of the most common ways, which is what I suspect happened here....
quite possibly.. but what could be the reason for the humming/ buzzing noise in my subs and the reason that they hardly even hit when i hook them up? but when i take the box out of my car and hooked the amp and subs up in my cousins truck they played fine...
It's pretty common to damage your rcas when unplugging/plugging them back in. I had something similar happen due to a bad rca, and if the equipment still worked well in another car you might want to check that. g/l
yes when i hook the subs and amp together in my cousins truck on his HU and wiring it did fine.. i thought it might be my RCA cables but i figured if it was my rca cables being bad it wouldnt play period? idk
ok i just built a new box today, and as i was putting it in/ building it(i had to build it IN the trunk because of opening restrictions), i made sure all my wires were hooked up right and everything was connected, when i got far enough down the road, I turned it up and it did this same thing.
I went back home, checked my wires, checked my amp, and sure enough, one sub was hooked up good to the amp + to + and - to -, but the other sub was hooked up + to - and - to +. a noobie mistake i know, but i switched them back and as soon as i did everything worked fine...