audi-o-man

coming from 1 amp? What's the point?...

AggregatVier

...I've seen all of these. It can get to be more trouble than it's worth. Once you've checked off the "easy" things, it may be time to get a new one.

Ray Khan

That is jsut how the amp is...it has two power in terminals and 2 grount out terminals

Ray Khan

I haven't gone as far as to crank it up without the sub just yet, but I noticed that when turning the bass up on the headunit, I can get the amp to shut off. Mind you I have the bass and treble way down....both are about 4 clicks from the left. If I play with that EQ at all I bring them down. This bass idea makes sense becuase the one song that will always shut off the amp is a Ja Rule song. I wonder if I have something set wrong on the bass channel.

Clues

1) could be a short or crossed wire in the sub. This will make checking wiring much easier since you've now potentially isolated the cause.

2) still might be the internal circuitry of the amp.

3) might still be wiring at other points of the car if there is a loose connection since the vibrations from the bass would trigger the short.

Clues

<center><img src="http://64.95.118.51/images/opti/ba/05/507380-elec_lg-resized220.jpg"></center><p>
Model XM-405EQX

Ray Khan

<center><img src="http://www.carreview.com/Channels/CarReview/images/products/product_49317.jpg"></center><p>
Specs 75Wx4 + 220W x 1 Ch, 4 Ohms at 0.04% THD
90Wx4 + 280W x 1 Ch, 2 Ohms at 0.1% THD
Zero negative feedback design High-voltage/High-current modes Large power supply MOS FETS Low-cut and boost control Subwoofer level control MOS FET final stage Separate pre-driver/front/rear power supplies 50-200 Hz high-pass/lo-pass filter Connector cover panel
Features Bridgeable Output -- Combines the output of two channels to produce one channel of greater output power Regulated MOSFET Power Supply -- Offers superior thermal stability and more accurate switching Variable Hi/Lo Crossover -- Continuously variable crossover point allows fine-tuning of the system for superior sound quality. Includes both hi-pass and lo-pass filters for application flexibility Adjustable 40Hz Lo Frequency EQ -- Delivers additional gain for bass frequencies. Helps overcome road and wind noise Separate RCA and Speaker Inputs -- Easily wired to after-market or factory installed source units for superior application flexibility
Specifications
Frequency Response -- 5-100,000Hz (+0/-3dB)
Total Harmonic Distortion -- 0.04%
S/N Ratio -- less than 100dBa
Channel Separation -- 80dB
Chassis Dimensions -- 25-1/8" x 3-3/8" x 11-1/4" (wxhxd)<ul><li><a href="http://www.carreview.com/PRD_49317_1806crx.aspx">http://www.carreview.com/PRD_49317_1806crx.aspx</a</li></ul>

audi-o-man

Anyways, if there are 2 grounds, they should share a COMMON GROUND, also, ground it independently from anything else grounded in your car ( i.e. interior lights, brake lights, etc. ), also power wire should be combined...

Ray Khan

I am pretty sure at this point it's not my power connections. I have 1 4 ga from the battery that splits to 2 8 ga to the amp. Both grounds go to the same spot. I think my problem at this point is not having my rear deck speakers in yet (and trying to blast the crap out of the rest of the system for some volume) and not having having the level of each channel high enough on the amp. WHen I turned up the sub channel from 40% to 50% the sudden shut offs dissapeared. I just read that I should crank my head unit up all the way and adjust the amp levels until I get distortion. Then turn it down a little. I think constantly pushing the headunit to get more volume (when I should have been pushing the amp) was the problem. Who knows.<ul><li><a href="https://forums.audiworld.com/audio/msgs/21831.phtml">https://forums.audiworld.com/audio/msgs/21831.phtml</a</li></ul>

AggregatVier

Subsonic feedback, try input filters.