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sub randomly thumping?
Posted: Thu Nov 15, 2007 2:43 pm
by MrSo0h0o
hey guys i was wondering if anyone had an idea whats going on. lately my sub has been making random single thump noises. obviously i can only tell its going on when the volume is low. i made sure the RCA's werent touching any metal, and i moved my amp around a little to see if it made a difference but still the same. could this be something to do with my voice coils?
here is basic specs on my setup:
sub- RF Punch HE2 10" old school.. 300w rms.. dont remember the VC config
amp- Xtant A3001 300w rms @ 2ohm, 150w rms @ 4ohm
what is some basic troubleshooting i can do?
TIA
Posted: Thu Nov 15, 2007 3:58 pm
by William from NOLA
I would redo your ground on the amp and HU. That's about all that comes to my mind right now.
Posted: Thu Nov 15, 2007 6:54 pm
by JeremyC
Yeah that sounds like a power or ground isue.
How do you have the ground wire on your amp set up?
Posted: Thu Nov 15, 2007 7:26 pm
by MrSo0h0o
ground for amp is grounded on a bolt near the rear passenger seat belt setup. maybe it has become loose? would that cause that type of sound?
Posted: Thu Nov 15, 2007 7:33 pm
by solacedagony
Your speaker wire might not be secure. Or it could be grounding out. Or your RCAs could be moving at the HU or at the amp.
Posted: Thu Nov 15, 2007 10:41 pm
by JeremyC
Sure can. I use a self locking washer on mine so that they don't come loose on me.
Posted: Fri Nov 16, 2007 4:25 am
by cargodz
JeremyC wrote:I use a self locking washer on mine so that they don't come loose on me.
^one of your bestest lil friends for grounding
Posted: Fri Nov 16, 2007 6:30 am
by Bwcad1
has nothing to do with your voice coils and never would. its something in your signal. without signal or power your vc are nothing but a winding of copper or aluminum.