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.
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Re: Kenwood 7202 Amp that is blowing fuses
If your speakers are wired for an impedance below 4 ohms mono or 2 ohms stereo, that would make it shut off. If you have a speaker wire shorted to ground, it would also cause the amp to go into protection.
If the speakers are not the problem, it may be shutting down because the voltage at the amp is dropping too low.
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Nope it's not a high-to-low level converter problem, it's most likely a problem with one of two things. 1) either you've blown the output stage in the amplifier, or 2) you've hooked up your subs wrong and your amp is seeing to low of an impedance. The amp is supposed to be 1ohm stable, but we had the same problem. When the indicator light goes red it means that the amp has gone into protection mode, now you have to figure out why. If something in the amp goes bad or just disconnects from the board it will cause power protection mode. If you fry something on the board because you are running the amp to hard or at the wrong impedance it will go into thermal protection mode, however there's no simple way to figure out which has happened.
Have you tried hooking up some different subs to see if the problem remains? try this. If the problem no longer happens then you know it's your subs, if it does still happen then you'll know it's an internal problem.
Years ago I had a Kenwood KAC-821; long story short, I melted the main power wire right off of the board, everytime I turned the system up the amp would shut down.
Take you amp to an authorized dealer and have them bench test it for you.
Check for shorts to ground in the speaker wiring, the speakers themselves, total Impedance, especially woofers. Proper size power and ground wire and all connections. Use a Ohmmeter or find a friend with one that knows how to use it, If all else fails RMA . Good luck, sumthin