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Repair service for AG1000 Zapco Amp.

Amp keeps blowing fuses when played at high vol. I have it bridged with three 10"speakers. it doesn't do it right away, it does it after a few minutes

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Is it blowing the three 30 amp on-board fuses?

To have 3 speakers bridged, each speaker must have at least a 12 ohm impedance (assuming that all speakers are connected in parallel). If you're running a load lower than 4 ohms (mono), the amp will likely fail.

The fuses don't blow right away because they are cold at first. As they heat up, they can blow more easily (even though the current draw hasn't increased).

Posted on Aug 10, 2008

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I installed a 400 watt zapco competition amp\ front speakers play ...back woofers don't?


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I have a zapco refrence 750.2 has no sound output when bridged but works fine when i run a speaker to each channel. any ideas on whats wrong?


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What do you do when your amp keeps blowing fuses


First off which fuse is it? The inline fuse from the battery or the amplifiers power supply fuse? Blowing the main fuse from the battery is caused by either the load (your amp) drawing too much current or you have a short to ground somewhere. Maybe there is a tear in the 12Vdc line and it is shorting to the chassis of your car. If the amps power supply fuse is blowing as soon as it turns on your amp has a shorted power supply. This will require internal component changes by a technician. If it is blowing after operation at high volumes I would say change the impedance that the amp is driving. If you are at 2 ohm try to rewire your speakers for four ohm. (go from parallel to series wiring then bridge mono or operate the amp in stereo mode)

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I have a dual XIA3145 580 watt amp that keeps blowing fuses


Generally, this indicates that there's at least one shorted output transistor.

Disconnect all speaker wires from the 'amplifier's speaker terminals' and disconnect RCA/signal cables from the amp. If it powers up normally, the speakers/wiring need to be checked. If it still blows the fuses, the amp almost certainly has shorted output transistors and will need to be repaired.

I'd recommend using two 10 amp fuses. The amp will power up with 10 amp fuses if there is no problem. If there is a problem, there's less of a chance of doing more damage by using the 10 amp fuses.

Let me know if you have any other questions.

babin_perry@yahoo.com

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Amp keeps blowin the two 30amp fuses on the amp.


Make sure that the speaker wires are wired correct at both the amp and the speakers......otherwise it sounds like the typical death of a power acoustik amp (great amps, but prone to a premature death)

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Sony xplod xm-1652z amp


You probably have the output bridged at 2 ohms. This amp is not a 2 ohm bridged stable amp. It is 2 ohm stable only in stereo. That means each channel can be 2 ohms, buts not bridged at 2 ohms.

If you have two 4 ohm speakers that are wired in parallel and then you bridge them, you have a 2 ohm load.

They only safe way to use two 4 ohm speakers is to run one speaker to each channel and then you have a stereo 4 ohm load.

When you use a 2 ohm load you get twice the current draw thru the amplifier as you would with a 4 ohm load. That means that the fuse you are using, the rating the amplifier is designed for, will blow any time you have a big bass hit.

If you are not using a 2 ohm bridged load, and you are using a 4 ohm bridged or something the amplifier is rated for, and you still have this problem, you may have a bad speaker. Even a speaker that will play can sometimes be on the brink of shorting out and causing the amplifier to draw lots more current than it is rated for.

If this is the case, you should go and get your speakers checked and see if they are still measuring at 4 ohms or at least close to it. Most speakers will measure a little lower than what the are rated. It is not unusual for a 4 ohm speaker to measure at 3.5 ohms, but if it is less than that, you problem is the speaker. Even if the speaker still plays.

I hope this was helpful for you, if you require any further help just ask.

If you did find that this was helpful in solving your problem, I would really appreciate a good rating.
Thanks and have a great day,
Dave

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Hifonics bxi 1206d


make sure you have a 40 amp fuse in it
im going to try to describe this to you
to bridge a amp this is for 2 ch AMP

+ - + -
I 2 2 I
I 2 2 I
I I 22
I I 22
I I 22
I I 22
#1 SPEAKER #2 SPEAKER
WIRE WIRE
ONE GOES ON THE POSIVE OF ONE SIDE AND THEN THE NEGATIVE OF THE OTHER
HOPE THIS MAKES SINCE
PLEASE LEAVE MY RATING

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Blown car amp repair (Lanzar Opti 150 stereo bridgeable car amp)


its better to change them all. than to change 1 or 2 mosfets, bcuz simetimes it affects the other mosfets. and please check your speaker or maybe there is an resistor, capacitors, or a relay malfunctioning in that area.

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Blowing fues


Are you sure you can put a 2 ohm load on this amp? Thats almost a complete short.

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