Kenwood 7204 blowing onboard fuse as soon as power is on

Brian Neathery

• 156 Answers
• Posted on Mar 15, 2007

SOURCE: Amp Problems

You are probably presenting too low an impedance load to the amplifier. In bridged mode the amp must be connected to a minimum 4-ohm load. If your subwoofer is a dual voice coil type with 4-ohm voice coils, you cannot wire the voice coils in parallel and connect it to the bridged amplifier. If you have a sub with dual 2-ohm voice coils, you can wire the voice coils in series and connect it to the amplifier in bridged mode. To connect voice coils in series: Connect a wire from the negative terminal of one coil to the positive terminal on the other coil. Connect the unused positive and negative terminals to the amplifier's output.

SOURCE: Kenwood 7202 Amp that is blowing fuses

i had the same problem ! that amp is underated!
it should have 2 / 40 amp fuses i had to direct wire the fuse!
not a smart thing to do but it never shut off again and i havent
had any problems at all i put a 60 amp fuse at battery!
melted 1 wire that was two small ! its banging 2 / 12inch solo barics and sounds great hits deep. again not smart BUT it works.

SOURCE: my kenwood kac7201 amp wont turn on but it has power to it

Recheck the voltage precisely like this:

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

SOURCE: BLOWN FUSES IN AMP

maybe try the ground or make sure you dont touch metal to metal

SOURCE: kenwood 7204 car amplifier flashes the blue light

Hello rogman9570,

I'd begin by checking all of the wiring. The most probable causes of this type of failure indication are:

• Speaker wire may be short-circuited.
• Speaker output contacts ground.
• Head unit (cassette receiver, CD receiver, etc.) or the amp ground fails.

If all of your wiring checks out OK, then the amp itself probably has an internal fault.

Hope this helps.