Hi i use a peavey 6505 Amp head and when i run a seymour duncan pickup booster through the effects loop it blows the amp (possibly the pre-amp fuses) i want to get a volume boost in a distorted setting hence using this pedal, when i run it through the front it doesnt increase the volume in this mode, only in a clean mode. any suggestions what i can do to stop the head blowing ??? Regards Alan

Pedals operate at a different level then rack units that go in the effects loop.
It needs to go in front of the amp input. Guitar to pedal to amp input.

1 3k amp powers up but no sound Peavey Forum

Tube Amp Troubleshooting 101

Amp turns on no sound tubes wont light up

Peavey 6505 Amp turns on no sound power tubes don light

Here's a link to a site with most any guitar wiring scheme you could ever want-

Wiring Diagrams Seymour Duncan Seymour Duncan

Here is the place to find any wiring diagram-

Wiring Diagrams Seymour Duncan Seymour Duncan

If it has a effects loop output and input on the p.a. head and a in and out on the reverb effects processor, then yes you can, just run the effects loop output signal into the input on your reverb processor, out of the output back into the input effects loop on the p.a. head, kinda like you would a effects pedal thru the effects loop of a guitar amplifier. hope this helps!

Something internally has shorted...not a good indicator of this models reliability. It may pay to research another replacement brand.

Slow blow should be fine. It is mostly for fire protection.

The effect loop is to use exteernal effect module... It is NOT to use guitar pedals !!!! The signals are line levels, NOT guitar type levels. An example of a device might be an Alesis Quadraverb. You take the effect send jack and run it into the inout of the effects module and the output of the effects module into the effects return jack. Many try to use guitar pedals and massive distortion results because levels are too high for the pedals.

already chek your 5 1/4 plug cable!

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.