what happened to my sell?

[budahbuddy803 10+ year member]

O.k. I just had a man over that wanted me 02' 12" L7. I wired it to two ohm because his rockford fosgate amp put out like 900rms @2 ohm bridged. I take it in the blistering heat and hook it up. Nothing happens, so we unscrew the sub make sure its at 2 ohms which it is. He unbridges his amp and we turn it on, the speaker compresses right when the music starts playing, but doesnt move. Finally i say man i promiss this is your amp because i had both hooked up last week and they have been sitting in my room ever since. I go inside and pick up an L5 and we hook it up and it does the same thing, compress when music starts and when it stops it returns to its original position. I am about to hook them both up in my room because i know it was his amp, but what could cause this to happen?

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[Pyro_By_Nature 5,000+ posts]

Maybe one of the coils is out of phase?Output section of his amp is fux0r3d?Other wiring issue?

 

[budahbuddy803 10+ year member]

well, i am thinking its his amp because i am listening to this sub at 2 ohm right now and it works and sounds like new. What kind of amp problems could cause this?

 

[kotec123 10+ year member]

its his amp

 

[Pyro_By_Nature 5,000+ posts]

Wait, when you say "compress" do you mean it goes straight outwards and sits there? If so, his amp is sending DC current to the outputs.Meaning there's something fried in the output section.Probably just a bad transistor.

 

[budahbuddy803 10+ year member]

no, the subwoofer is like someone pushed on the cone as far as it will go, and then it stays there until there is no power going to it and when that happens, it returns to its normal position

 

[Pyro_By_Nature 5,000+ posts]

no, the subwoofer is like someone pushed on the cone as far as it will go, and then it stays there until there is no power going to it and when that happens, it returns to its normal position

That's exactly what I just said lol.

 

[budahbuddy803 10+ year member]

well then yes. Would it be worth buying his amp from him and fixing it? I dunno if he wants to sell it or try to fix it.

 

[Pyro_By_Nature 5,000+ posts]

Doubt it, unless you know what you're doing and you can track down the parts, not to mention knowing how to properly solder it in.

BTW: You said bridged, so by this I'm guessing that it's a two channel amp? No RF 2 channel amp that I know of can handle that, daily.

 

[budahbuddy803 10+ year member]

no RF amp can handle what? 2ohm bridged?

 

[gl0ck 10+ year member]

yeah 2 ohm bridged, try 4?

 

[bimma85 5,000+ posts]

yeah 2 ohm bridged, try 4?

My buddy runs his RF rated 4ohms stable, at 2 ohms. Turns off for a couple minutes once in a great while, thats about it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif.