I think my amp blew

[Sinner13]

Just moved my 500w alpine v power amp from my g35 to my g20 and after about an hour it just cut out. If I restart everything it will play for a few seconds than cut out again. The power light is on and solid, there's no other lights on it. It was warm to touch but cooler than my JL 300/4. All connections are good nothing loose. Don't think it could be the subwoofer but will check impedance just in case before anything.
Anything else I should check? I think it's done.
Did find this JBL 600w on sale for half off

https://www.amazon.com/dp/B08993DT1S/?tag=caraudiocom-20

Are these any good or should I buy a used alpine off eBay?
Open to any and all suggestions
Fyi it's hooked up to some cheap pioneer sub I'll get model numbers for u guys later.
Thanks

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[audiobaun 5,000+ posts]

What Radio/HU are you using?? Does your G20 have an amplified HU?

 

[audiobaun 5,000+ posts]

Those Alpines are pretty much Diehard amplifiers. Could be the sub.. Maybe a wire is loose inside the Enclosure on the sub wiring?Possibility? Whats the Model # of the AlpineV? And the Sub?

 

[metalheadjoe 10+ year member]

Measure voltage on your rca's to make sure it's receiving audio signal. Oscilloscope is even better if you have one.

 

[Bobbytwonames 5,000+ posts]

Sounds like it's going into protect. Sub wiring too low or dropping voltage IMO.

 

[Bobbytwonames 5,000+ posts]

Just moved my 500w alpine v power amp from my g35 to my g20 and after about an hour it just cut out. If I restart everything it will play for a few seconds than cut out again. The power light is on and solid, there's no other lights on it. It was warm to touch but cooler than my JL 300/4. All connections are good nothing loose. Don't think it could be the subwoofer but will check impedance just in case before anything.
Anything else I should check? I think it's done.
Did find this JBL 600w on sale for half off

https://www.amazon.com/dp/B08993DT1S/?tag=caraudiocom-20

Are these any good or should I buy a used alpine off eBay?
Open to any and all suggestions
Fyi it's hooked up to some cheap pioneer sub I'll get model numbers for u guys later.
Thanks

Was the amp working fine in the G35?

 

[Sinner13]

What Radio/HU are you using?? Does your G20 have an amplified HU?

jvc kd-x370bts

 

[Sinner13]

Those Alpines are pretty much Diehard amplifiers. Could be the sub.. Maybe a wire is loose inside the Enclosure on the sub wiring?Possibility? Whats the Model # of the AlpineV? And the Sub?

Amp is mrp-m500
Sub is pioneer ts-1200m

 

[Sinner13]

Was the amp working fine in the G35?

Yes

 

[Sinner13]

So I'm actually thinking it's the sub now it's a pioneer ts-1200 4ohm and with the multi meter it's reading 1.6 ohms and my amp is rated to only 2 ohms.
2ohms is way too low for a 4 ohm sub right?
And would my amp be cutting bc the ohms are too low?

 

[spokey9]

I would think that's way too low...a 4 ohm sub should read 3.6 or better...is it a dual or single voice coil?

 

[Sinner13]

I would think that's way too low...a 4 ohm sub should read 3.6 or better...is it a dual or single voice coil?

Single, gotta be a short in the coil

 

[spokey9]

If it's a single...that's way too low

 

[ThxOne Premium Member]

So I'm actually thinking it's the sub now it's a pioneer ts-1200 4ohm and with the multi meter it's reading 1.6 ohms and my amp is rated to only 2 ohms.
2ohms is way too low for a 4 ohm sub right?
And would my amp be cutting bc the ohms are too low?

I was going to mention the 2ohm rating. I had an Alpine MRX-M100 that was 2ohm and I got it down to 1ohm and she shut off. The specs show it can run at 1ohm but at half the 2ohm rating. Yours may be the same. Yeah, that sub sounds suspect.

 

[ThxOne Premium Member]

Of course you could have blew your coil by under powering the sub... what does that Alpine put out at 4ohm???