Bad Hum I have a bad hum in my subs. i changed my subs out and its still there I have a Hifonics Brutus BX1205d What do i need to check??

Capacitors are static semiconductors, they don't beep and they don't display zero.

You're overworking the system or you have bad connections. Contact the maker direct under warranty.

https://www.google.com/search?q=Brutus+Hifonics

..

3 causes. generic. then real.
60Hz hum/.

1. the PSU inside the SUB is bad, as in bad CAP's inside.
2. input cables to it bad, shields broken (coax cables)
3. bad source signals from what ever is connect to the sub.

in this case (no pun) the main case is the SUB and the PSU is inside the sub
so sub bad. or
test it with no L/R speakers yet , it still hums or is dead well the main unit is bad and needs service. OR

the main has cable from PC to MAIN SUB case.
IF this cable is bad, is first check.but that would make L or R fail too.
a bad shield will not only effect the sub speaker, (hum)
the PC end is only 3 conductors L and R and shield. some are sold double shielded, and are prime to own..

try a new 3.5mm phone patch cable, just in case his fixes it cheap.
or the 2 cable ends to PC , phone plugs are lose
or dipped in spilled drinks gunk.

or PC is bad , ( try other sources , PC, phones, or mp3 /dvd players.)
the PC bad would effect R or L too. IMO

Check power supply diods. power supply capacitors and power supply and output transistors.
Remember, distortion is the biggest killer of subs and amps. Everything made by anybody has its limit.

must be a bad amp..have you tried bridging them maybe youre channels are out it happens even if its brand new...factory deffects

Check that it properly grounded so that you don't have "ground loop hum" and that you have no power cords crossing other connections.

Hello beaugarcia26,

Unless the amp itself is defective, there's a short or ground somewhere.

First disconnect the speaker wires and RCA (or high level) inputs, leaving just ground, remote turn-on and power leads connected. Then see if the amp powers up normally. If it doesn't check the ground with a multimeter and make sure it is good. If the amp powers up normally, check the speaker, speaker wires and inputs for shorts or grounds.

Hope this helps.

MAKE SURE SUBWOOFER OUTPUT ON YOUR RADIO IS ON IF NOT THAT COULD BE BAD INPUTS ON YOUR AMP

first off nice choice on the amp check ur power and ground connections make sure the main battery to bady ground is good if questionable add a new one cant hurt to have extra grounds from the batt to the body make sure the amp ground is as short as u can make it make sure its grounded to bare metal if any of these dont work u may have a prob inside ur amp 

i would assume hooking it to the remote and ground of the amp

If an RCA took a dive your amp has most likely seen a very nasty input spike and may never be the same as its circuitry has been damaged.....sorry

I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_aad3edb7dfa380b9