Question about Crunch V-Drive V-2800 Car Audio Amplifier

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Amp goes into protect mode.

When i start my car my amp will go directly to protect mode, i can hear a small amount of music coming out of my subs but it won't hit. I was wondering if its the ground wire, a fuse blown, or if its touching the paint, I have 2 12 inch duals so i doubt the subs would blow my amp, any other solutions or tips?

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I would definately suspect wiring. If you can use a volt meter. Put it on the b+ to ground and see what the reading is should be 12+ then try the ground to remote wire should be 12+. If it drops below 12 volts when car starts. Recheck wires for loose connection. Also double check the wire you have the remote wire connected to. You might even want to disconnect from the amplifier and use a jumper wire from the positive terminal on the amp to remote on the amplifier and see if it stays on then. If it stays on you will have to find the loose connection or find a different wire to get remote power.

Posted on Feb 05, 2007

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1 Answer

Jbl a3001 goes into protect mode when bass hits. Wrkd then just stopped. Amazon replaced the amp with a new one, new wire, loc, rca, grnd locatn. No dice. Ideas?


Bad or shorted voice coil on sub maybe. If you have two subs try them one at a time to see if it goes into protect mode. Whatever sub does it is bad.

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My NAD C326BEE amp goes into protection mode at moderate volume


The protection only should come on, when the power amplifier has to give more current than it can deliver. (electronic fuse)
If in the music is a lot of subsonic, sound, so low you can't hear and your speakers can't produce, this could cause the problem. Normal CD players will cut of all frequencies beneath 20 Hz, but it could be your PC is giving everything from 1 Hz and above.
I would certainly try to play some music over a CD player and check if that would solve your problem. Not sure if that works, what you could do to suppress the sub sonic in the computer music.

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My brand new Kappa One amp is powering 2 brand new Kappa 100.9w subs at a 2 ohm load. The Ground an Power are both 4 gauge wire. The problem is my amp is just getting so hot that I can only touch it for a...


Sometimes these amps have been known to get hot very easily. That said, I would first confirm the resistance on your speakers at rest is 4 ohms each, so that your amp is seeing a 2 ohm load. Be sure that the smart switch on each sub is flipped to the 4 ohm mode, and measure each separately.
Be sure that you've properly set the filters, gain, and bass boost so that your amp is not being over driven. Your HP filter should be set no lower than 20Hz--most music is never going to go that low so there is no point. A narrower frequency band is always going to be healthier for your subwoofer. The LP filter should be set no higher than 90 to 100 Hz at the most, depending on how much midbass your speakers can handle, so that you don't have too much of a sonic gap between the subs and mids. As for the gain, a good place to start is with your radio set at it's highest comfortable, distortion free setting, minus 25%, then start with the amp's bass boost all the way down, and the gain set to the minimum level at which you can just begin to hear music. Choose a bass heavy track if you ever listen to bass heavy music, so we can prepare for the most stress that the amp will experience. Slowly turn up the gain until you start to hear distortion during heavy bass hits, and back off 20% - 25%. This should be the highest volume you ever push your amp to, and from here, you can ever so slightly turn up the bass boost if you absolutely must, but not to the point of any distortion, if you hear any, back it off a bit.

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My amp is protecting unessacarily when ran at 2 ohms


are you factoring the ohm rating from running them parallel?

2 x 2o subs parallel = 0.5 ohm (lowers ohm's)

2x 2oh subs series = 4 ohm

IT is posable that you are calculating the ohm rating fine, BUT some SUBS can reach lower ohm rating while hitting bass- i didnt know this till i had a rather insane sub that would dip to 1ohm while hitting hard bass causing my amp to go into protect mode.


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I have a rockford fosgate 501bd amp the protect light comes on when my deck turns on even with no speakers connected


un hook the subs and let the amp sit there on if the protect light shuts off you wired your subs wrong if it doesnt go off tun it off then back on with no sub music all the way down then slowly turn the music up if the light is off then comes on you need new rcas

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your amp isnt getting enough power to it you may need to install a compacitor unit

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Type r subs


your amp mine be going in to protection mode

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Subwoofers not getting music


looks like you need to check the SOURCE of where the signal is coming it could be that your CD car stereo SUB opt. is turn off , check the menu of SOURCE and switch to SUB on , hope this helpful

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My amp turns on then the music cuts in and out


check your main ground, if possible try to read voltage across making sure 12-14v present with load and some signal.

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Amp heats up and goes into protect mode


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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