Question about Kenwood KAC-9152D Car Audio Amplifier
Ok so i have this kenwood and a 1 farad cap hooked up to it and it keeps overheating. It seems i ahve a short in the system because when the sub hits i can see a lil electric shock going from the case to the screws where I screwed the amp down. So im pretty sure the case is getting power when it shouldnt and its causing overheating. Can someone please explain how to fix this short?
Obviously you are using the mouning screws as the power ground connection. Disconnect mounting screws from the case.be sure a short heavy gage wire is connected from the ground of the terminal strip to the car body. clean bare metal only with a star washer. If the connections are not good the terminal strip will over heat and melt.This is common.measure with a DVM the case of the amp to the car body.disconnect the input jacks. turn on the system. The voltmeter should read 0 volts. I ou have any other reading or the amp won't turn on with the input jacks removed you hve an open power ground on the circuit board. If the power ground is open well the voltge wil find the next available way to get to ground. Usually will burn out sigal grouns in head unit and amp. Take out the board and look at the trace connectedto the terminal ground. Jumper and resolder it.
Posted on Sep 08, 2007
Sounds to me like you have a bad ground. Usually the amplifiers case is ground and you should see no spark. But if the ground is bad. When the downbeat hits the current draw can go up by multiples. The ground is dirty or too small the amplifier tries to draw it elsewhere. So even though you have a cap. You would be running low voltage under load. causing the switchmode power supply in the amplifier to work harder to keep up the rail voltage in the amplifier. The transistors switch faster. The faster they switch the more heat they create. And your amplifier gets hot. The only other thing is if the toryoid coil in the amp is shorting. causing high voltage to case. But this will generally burn out the head unit in the vehicle unless you have a ground loop isolater. To determine check to see if there is unusual voltage at the RCA's.
Posted on Aug 25, 2006
SOURCE: kenwood 350 w-2 amp wiring
you can simply take the input and connect it in parallel to the input of the second amplifier. The output of one amp will go to one speaker, and the output of the other amp will go to the other speaker.
The inputs of amplifiers are "high impedance" so putting more than one in parallel won't put any strain on the radio circuit.
Hope this helps.
Posted on Mar 27, 2008
Most times I hear of people turning up the volume on a head unit and cutting off on the amp it tends to be wired to a speaker with the wrong impedance. I googled kicker comp and got tons of different models, not to mention almost all of them were 250 watt rms. That amp is 900 watt RMS at 2 ohms. If you only have 1 woofer, you can't possibly wire it wrong being all the subs I've seen in the results were 4 ohm. If you are using just one though, you should get a larger speaker, both 2 ohms and 1000 watt rms to prevent distortion. I'm afraid I can't answer your post without further information on the sub you are using.
Posted on Nov 21, 2008
i have the same amp running 2 type r 12". It cuts out also. I put 0 gauge power wire and a capacitor and it still does the same thing. I had to buy 2 and run each sub independenty at 4 ohm.You can run that amp all day long, full volume at 4 ohm. But is hates running large load at 2 ohm.
Posted on Feb 25, 2009
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