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The sub is not working anymore,amplifier problems probably.

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I have 2 amps instalkled in my car one is sony 1200w 2 channel amp for speakers and one is solid audio f2500d for 3 subs my sound and every thing was good but suddenly from yesterday im having trouble when...


First disconnect the CD head unit from the sub amp and see if the other amp works. If yes, the problem is the wires to the amp, the amp itself, or the subs/sub wiring. If no, the problem is the head unit--probably an internal short.
If the other amp works with the sub amp disconnected, reconnect the sub amp to the head unit, but disconnect the sub wires from the amp. Try the CD player. If the amp goes to protect with no speaker wires attached, the amp is bad. If the amp is OK, the problem is the subs or sub wires. Hook the wires up to the amp again, but disconnect them from the speakers. Try the player again. If the amp goes to protect, the problem is the amp wiring. If not, the problem is the subs. Check the impedance of each sub using an ohmmeter to determine which amp is out of spec.
Please let me know if you have questions, and thanks for using Fixya.

Jun 11, 2011 | Solid Audio F2500D 1-Channel Amplifier Car...

1 Answer

I have a alpine MRP-M500 amp connected to 2 10 inch comp kicker subs. The problem is the subs rattle and distort. The subs have been tested ok and all the wiring has been tested also ok. What could be...


Any time that there is a rattling sound from the subs, that indicates that they are probably blown. How were the subs tested ok? If the resistance of the subs is still close to OK, that is good, but it doesn't necessarily indicate that they are working properly.
Try using different subs at a lower volume, or turning down the gain slightly.

Mar 11, 2011 | Alpine MRP-M500 Car Audio Amplifier

1 Answer

My sub make a strange noise. It doesen't work anymore.Tks.


Strange noises can come from your amplifier or the sub itself. The most likely cause of the strange noise is the speaker just before it dies! If you have been using the sub-woofer at high volume levels then you probably have damaged it. Try testing the sub-woofer using a multimeter(on ohms setting) it should give you a reading from 8 to 4 ohms. Sometimes they may give readings as low as 1 ohm. When testing the speaker/sub you should hear a soft scratchy, thumping or clicking sound. This indicates that the speaker may still be working. If you don't have a multimeter try a 1.5 volt battery (say a AA), DONT USE HIGHER VOLTAGE BATTERIES they may damage the speaker! You will hear a clicking, scratching etc sound from the speaker which may indicate that it is still OK. If the speaker seems OK the problem may be in the amplifier, which I suggest you bring to a professional repairer. When buying speakers and amplifiers make sure the power handling of the speaker is equal to or greater than the amplifier output power. This should stop speakers from getting damaged. Make sure the speaker and amplifier specifications are rated in the same manner ie RMS PMPO Peak. A 100 Watt PMPO speaker will not survive the output of a 100Watt RMS amplifier!

Feb 08, 2011 | Audio Players & Recorders

1 Answer

Can I attacch two speakers and a sub to a alpine MRPM352


not really it will under power the sub and probably damage the amp it will work but the current draw from sub will damage the amp, one or the other i sugest

Apr 26, 2010 | Alpine MRP-M350 Car Audio Amplifier

1 Answer

Pioneer audio/video receiver damaged


Hi...
The problem is probably that the bad connection "took out" a couple of the power transistors/power mods in the amplifier

If you need a pro to fix it I can suggest someone depending on where you live

Apr 15, 2010 | Pioneer Audio Players & Recorders

2 Answers

My subs/amp are not working


when you car is running, it charges the battery somewhat. So the voltage problem is not a problem. The red light means the amp is going into ''Protect Mode". This usually happens when something is wrong with the amp. Usually the amp is getting hot. Check all of you connectiong and check the final impedance of the subs. Make sure the amp can handle the impedance of the subs. If you need anymore help, message me.

Feb 12, 2010 | Kenwood Excelon KAC-X621 Car Audio...

2 Answers

How do I fix the problem so they work again.?


A 1000 WATT AMP HAS PROBABLY GONE INTO PROTECTION MODE BECAUSE YOU ARE TRYING TO RUN 1600 WATT SUBS COMBINED

Jun 08, 2009 | Car Audio & Video

1 Answer

Protect Light Stuck on Red


First disconect the subs and try probably one of the sub is damaged or if the problem continue,then disconect the RCAs from the main unit and try probably one of the Rca is damaged if the problem continue then you have a problem with the internal outputs from tha amplifier,you need to take it to a repair shop to get it fix,good luck.

Mar 23, 2009 | Jensen Power Series 340W Amplifier Car...

1 Answer

Sub not working


it's probably wired into the ignition power supply

Mar 19, 2009 | Sony Xplod XM-554ZR Car Audio Amplifier

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