Amp Blown? / What to do

[Scotty2Naughty 10+ year member]

I have a Lanzar Opti 2000d and yesterday it cut out and wasn't nearly as loud. I thought one of the wires to the coils of my sub had come loose, so today I checked it and they were fine. I then checked the amp with my multimeter and the voltage from the speaker outputs only read about 13 volts with the car on and about 12 volts with the car off. This will go down if I turn the gain down but if I turn it up it is about 13 volts is the max. I assume this is the voltage the amp is getting and it isn't amplifying. Is the amp blown? If so how can I fix it, or should I just get another amp. thanks

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[dkguitarist 5,000+ posts]

if you're amp was blown, you wouldn't be getting ANY output at all.

 

[Scotty2Naughty 10+ year member]

Thats a good sign, does anyone else know what it could be.

 

[dkguitarist 5,000+ posts]

how's your battery/alternator voltage?

 

[Scotty2Naughty 10+ year member]

Its about 12 for the battery, about 13.5 alternator

 

[Ali1 10+ year member]

check your alternator again. It should be atleast 13.8, 14.2 for optimal.

 

[DaveT 10+ year member]

if you're amp was blown, you wouldn't be getting ANY output at all.

not always I had an alpine MRD 605 that blew out that it would put out voltage but only like 10 volts ac max with the gain maxed

 

[Scotty2Naughty 10+ year member]

The alternator voltage has always been a bit low, i've had the amp for 6 months and never had a problem before. I opened the amp up and I don't see anything noticibly wrong with it

 

[Scotty2Naughty 10+ year member]

today I messed with the amp some more. I hooked it up to my sub and turned up the volume, it would get loud for a split second and then the volume would drop, every once in a while it would get loud for a split second and go back the the lower volume. The max gain I could get was 26v ac, which is around 1400 watts. The amp is acting really weird.