I have an alpine deck with componenet speakers, not hooked up an amp. I have a JL audio 10W3v2 sub being powered by a pioneer 760w amp. After i installed it, the first 40 minutes i was driving. I turn my car off.... come back an hour later, turn the engine on and it pops, then i turn the colume down, the sub works, back up to level 4 it cuts out. Why is that? My amp should have more than enough power to push one 10. The same amp pushed 2 higher powered 10s before. Please let me know what it could be.... I spent good money on this system and am very mad that it is not an easy fix....i.e checking connections.
Help me please!
Thanks
2007-04-18 07:18:25 · 10 answers · asked by Anonymous in Cars & Transportation ➔ Car Audio
Your problem is caused by this 2 possible solutions:
1. You have a bad grounding problem. check the wiring connections, make sure they are properly attached to the chassis, clean the metal surface, scratch the paint and expose the bare metal surface for better conductivity.
2. Your subs are drawing to much power from the amp causing it to reach the amplifier limits, when the signal amplitude is bigger than the limits the sound wave is clipped, thus losing information, in the case of sound losing bass. If that is the case you need a bigger amp.
2007-04-18 07:47:24 · answer #1 · answered by Mitchell 5 · 0⤊ 0⤋
It sounds like you're overloading the amp to the point where its safety cut-out kicked in.
Check your inputs. Are you doing line level inputs from your head unit to the amp or are you using speaker level inputs?
Also, are you bridging the channels on your amp? Check them.
I know it sounds silly, but also check the subs connection to your amp to make sure they're TIGHT at both ends.
If all these checks out and you're still having problems, the only way is to trouble shoot the system outside of your car. Bring the amp out on a bench and run a "burn in test" to see if you can replicate the problem. If you can, that means there's something wrong with your amp itself.
2007-04-18 07:35:33 · answer #2 · answered by Snowie 6 · 0⤊ 0⤋
Clipping isn't caused by too much power consumed from the speaker. It's caused by either having the gain too sensitive or the signal too strong to the amps inputs.
http://www.bcae1.com/gaincon2.htm
http://www.bcae1.com/amplfier.htm#clipping
"When an amplifier receives an input signal capable of driving it beyond its power rating, the result is clipping. This means that the negative and positive peaks of the amplifier's output signal are "clipped" off. The amplifier may also clip in an asymmetrical fashion, meaning that the positive side of the signal is clipped more than the negative (or vice versa). When subjected to an asymmetrical clipped waveform, one end of the loudspeaker's voice coil is "on average" spending more time outside of the gap (corresponding to the direction that is clipped) than the other. The end of the coil that is spending more time outside of the gap has poor heat transfer to the magnet structure. As a result, it overheats and burns. "
Source, http://www.jblproservice.com/general_faq.htm
2007-04-18 08:03:56 · answer #3 · answered by Anonymous · 0⤊ 0⤋
One other thing that hasn't been covered yet is too low of an impedance presented to the amp. Is your sub a D4 or D2? If it is a D4 and you have the coils paralleled to the bridged channel on the amp, it is too low. In this scenario you need to series the coils and then to the single (bridged) channel of the amp to make the amp run at 4 ohms.
If the sub is a D2, series the coils and the to bridged channel of the amp. This will make the amp run at 2 ohms (ideal).
2007-04-18 13:05:33 · answer #4 · answered by Andrew K 3 · 0⤊ 0⤋
Perhaps it's not your amp, but indeed power. For example, your car battery might be low and isn't supplying enough power to the amp and in turn isn't pushing the sub. I had 2 15" subs with a crappy *** amp (600w maybe) and it did that. I also had an older car. Bought a new battery, put it in and boom. Hope this helps and gets you back to bass.
2007-04-18 07:28:54 · answer #5 · answered by nexolan 2 · 0⤊ 0⤋
This could be caused by a poor ground connection; make sure your ground point is securely fastened to vehicle metal. It could also be caused by a loose battery connection, or a problem with the fuse or fuse holder. If you have a AGU (glass tube) type fuse they're notorious for failing even if they don't look blown.
2007-04-18 07:25:56 · answer #6 · answered by KaeZoo 7 · 0⤊ 0⤋
it could be the ground wire or the amp isnt powerful enough
2007-04-18 17:36:58 · answer #7 · answered by EMS 2 · 0⤊ 0⤋
That is correct, your problem is your ground, check the wires for any problems. Same thing happens to me.
2007-04-18 07:29:40 · answer #8 · answered by Aaron B 5 · 0⤊ 0⤋
be on the look out for wires that may have been loose or installed wrong. it appens to me all the time.
2007-04-18 11:24:09 · answer #9 · answered by junior 2 · 0⤊ 0⤋
you need a more powerful amplifier.
2007-04-18 07:26:07 · answer #10 · answered by Jd24 2 · 0⤊ 0⤋