Question about MA Audio Hard Kore HK-898 Car Audio Amplifier

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Technics amp su-vx800 goes in to protection mode after approx. 10 to 15 mins of play depending on the volume level.switch it off for 2 mins and it operates again.Could this be a faulty muting ic AN7073, a driver transistor or other faults.

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Check Emitter resistors and transistors in protect circuit, freeze spray can sure help isolate on the run - as the thermal characteristics change so does resistor values (to a degree) and transistors - leaky ones can trigger this too... however do not discount you may have been had by a dry joint.....

- Baily

Posted on May 02, 2009

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Yes it can, it sounds like its over heating, make sure that your product is able to get fresh circulated / cooler air
if it already is, then it probably is a faulty product.

Posted on Nov 23, 2008

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A thumbs up would be greatly appreciated if this answer is helpful to you. Worth fixing.
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Amp going into protect mode


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Hi Saint108. You're describing it well, and i know what the problem is already. The MA audio amp, can't hold with a 2 ohm load. It's too low for that amp, that's for sure. Those are budget amps and they are not well built enough to handle low ohm setups like that. It's overheating and there's no ways around it.. Other than wiring your subs differently ! Just wire your sub directly (not in parallel) in a 4 ohm load, you will notice it will stop overheating that much. Do it quick, you'll most likely fry your amp giving it such hard work !! The HUM you're hearing could be related to it also. Try that, and keep me posted on the status. Thanks ! Cheebster.

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