Fried combo amp.

[bassmusic808]

Hi, So I made a dumb mistake and plugged my 15w 8ohm practice combo amp (using the speaker output) into my 400w 4ohm cab. It had been a while since messing with my gear and I forgot how the ohm stuff works and now see that it was a bad idea. So, now the combo doesn't work but I wonder if I had damaged the cab or even the speaker cable I had used to connect them? I know 15w isn't that much.. but, anyone know?

[spaz21387]

I doubt you damaged the cable but theres a chance you damaged the speakers. speakers dont like to be driven so hard when the amp clips. I pretty sure 15 watts couldnt do this but you never know.

[bassmusic808]

OK. I don't have another amp around to test out that 4ohm cab, but I guess an amp rated for only 8ohm doesn't play nice with 4ohms cabs.

[Thor]

Check the specs of the combo amp. If it is an 8 ohm amp and has an extension speaker output, it is very likely rated for a minimum of 4 ohms. You ran it at 2.67 Ohms for a bit.

Cab should be fine.

Cable should be fine.

Check fuses and such on combo.

Check cab with another head.
Check cable elsewhere.

Call Amp tech and get a repair. Or go buy a new one, a 15w combo doesn't sound like it would be very expensive to replace.

Don't repeat same mistake.

[bassmusic808]

Thanks for the info. It actually said right under the speaker out jack "15w 8ohms". Actually, I just found an old post someone asked about the exact same combo, Squire BP-15.

Connecting a cab to my combo?

Ya, I'll be more careful next time. Thanks for the replies. I knew I should have checked these forums before plugging in stuff!

[lbwdog]

The 4 Ohm cab speakers are OK. Clipping does not damage woofers!! (I think that's been said on here 200 times).