Question about Kenwood KAC-9152D Car Audio Amplifier
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Posted on Jan 02, 2017
1) Pull your speaker wires, grab an ohm meter and confirm that each speaker reads 4-8 ohms nominal impedence.
2) Ohm out your speaker wires to chassis ground & confirm no 0 ohm (short)
3) Confirm 12 volts plus at amp power wire. Low voltage will send amp into protect mode.
If speakers are disconnected and amp turns on, look for a red led. If red then you have an internal problem that is protecting the amp.
If going into protect mode due to internal issue, then it's time for a new amp.
Also, you will need to use a "line out adaptor" in order to covert from speaker out to low level (RCA) input to amp. Too much voltage from head unit can fry the pre-amps in the amp.
And yes, I'm an electronics tech and yes, I know my stuff on car audio:)
Just a side note, never confirm a fuse as good by sight:)
Posted on Nov 15, 2013
Testimonial: "ok the 12'' speaker is reading 4.34 ohms and the amp is getting (when car is off) 12.37v and is still turning on and off but i found out is that it doesnt do that when the speakers are unpluged, the led light on the amp is red but when i put the speaker in the led red light is dying off its not turning another color just off (but its day light out and cant really see the led with the sun light) but with the speaker unpluged the amp is on and i can turn the gain all the way up and the amp stays on but when i plug in the speaker its on and off but with the gain at a really low level the amp stays on and also the amp is called for 2x 20a fuses and i have 2x 25a fuses just found that out today and i took one of them out to check them the amp stayed on with only one fuses??? i dont think they are suppose to do that???? thats all i fouund out so far"
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