Question about Music
Turned up to 10 across the board but it sounds like a small computer speaker
Effects loops plug sockets get dirty and cause the sound to not get through to the actual power amp. Check those by plugging in a cable and wiggling to see. It needs to be wiggled and unplugged to see. Also, check for dirty volume control.
Posted on Feb 21, 2013
go back in and find where the electrolitic capacitors connect to the board. They look kind of like a battery. One or both of them have broken loose from the main board, preventing any significant current from going to the output transformer, and causing overload. This is a common problem, and it does not take much rough handling to cause it.
where the break is is at the solder connection. Under a magnifying glass, the break will look like a little circle. Float fresh solder on that or any other large solder joints which may be cracked or broken.
Use standard precautions when working around high voltage.
Posted on Dec 02, 2008
Power light means very little. If unit has a preamp output, plug a set of headphones into it and see if you can hear anythin going through. (it will be weak). If you can, the power amp section is bad. Take in for service.
Posted on Mar 29, 2010
150 watts should be easily handled by four Peavey speakers in the connection you described.. If the Peavey's are 8 ohms, then your total load was 8 ohms for the series/parallel arrangement which is well within the 2 ohm drive capability of the Crate according to specs.
I question if you really mean the speakers were in series? This requires a special cable to do this. Now if you mean they were "daisy chained" like the amp went to one speaker and another cable connected that speaker to another, then you REALLY had ALL speakers in parallel electrically which would be at the 2 ohm low limit of the amp... In either case, with only 1/4 of the 150 Watts to each, the speakers should NOT have been damaged. The amp MAY have been damaged. Try each speaker individually at a REASONABLE level to test.
If you plug into the effects loop out jack,OFTEN the connection to the internal power amp is broken so you might have to arrange a special cable as a wye to go back into the power amp as well as your external amp. In any case pwere ALL interconnected amps, etc from the same power source/receptacle for system safety.
Posted on Jul 16, 2010
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