Question about Orange Crush 30R Reverb Guitar Amplifier

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Peavey Bravo 112 hums and has less poast gain volume

I just bought a Bravo and the amp sounded great and after taking it home, i plugged it in and picked it up and it made this God awful screeching noise (Im not sure if this is realated). Then after turning it off and letting it rest i turned it back on and the volume of the entire amp had dropped significantly. The clean isnt as loud as before (to be heard it has to be on 4 instead of 1) and the Ultra Gain is the same (Pre Gain on 9 Post on 5 instead of Post in 1). I have absolutely no idea what the problem is being this is my first tube amplifier. Should I just get new tubes? or something else?

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Try checking to make sure that all the tubes are properly seated in the tube sockets and that one wasn't broken at the base. Considering that you just bought it you should be able to take it back and have it serviced for free.

Posted on Jul 24, 2009

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Sounds like a bad power supply filter cap...the buzz you're hearing is the 60 cycles hum that filter caps reduce or (hopefully) eliminate altogether. It may also be related to the tubes but finding the bad one will require some work. Any friends have this same amp? If so, try swapping one tube at a time and see if you get lucky. If this amp is new take it back ASAP as it is a manufacturing defect.

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Tone is a hard thing for some to achieve. Kinda sounds like the amp isn't satisfactory to you as a player. I use an ADA MP-1 with a quadraverb GT and I can sound like Steve Vai with almost any amp. The pedals you mentioned should all sound pretty good with almost any amp. You kinda sound as if your amp sounds wimpy. ALSO, a good metal distortion is a combo of effects as well as tone(layering). The sound you may be expecting may be the sounds of 4 effects combos at a time through a line mixer making it all sound like one sound. I use rack stuff BECAUSE I can get the sounds that NO pedals can give. This also sounds like your knowledge of the equipment needs improvement. True tweaking of gear takes years to perfect, especially if you're a picky guitarist like myself.

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I have a Peavey MAX 112 Bass Combo amp. When I turn on the amp and have it plugged into the cord and bass, it immediately begins emitting a "whump whump" sound similar to the sound a beating...


The amp is doing what is called "motorboating". This is usually caused when the voltages to sensitive preamp stages are inadequately filtered or regulated and the sudden load of the output stages cause a dip in the voltages sent to the preamps which in turn vary the input to the output stages starting the cycle over. This will require electronic troubleshooting and if your not skilled in that, then it is NOT a DIY fix. What you are seeing is NOT normal, there is a defect.

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I have a Peavey ValveKing 112. It seems like it just takes forever for the tubes to warm up. For like the first hour that it's turned on the clean channel seems fine, but the second channel doesn't work....


Buy ONE new 12AX7 and try it in location V1 and if it doesn't help, try it in V2. This tube has TWO heaters in it and if one is intermittent that could cause your problem. The vibration MIGHT be "fixing" a briken heater after some time.
There are MANY components that could cause this, so you might have to take it in for repair if it isn't a simple tube problem. Since it works on the clean channel, V3 should be OK.

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Peavey 115 Low hum Low volume from input


The preamp section has a problem. It could be anything in the preamp but is OFTEN the input jack itself. They take a lot of abuse.

Also the insert jack contacts that forward the preamp to the power amp if no external FX are used can go bad.

Additional things are circuit board cracks caused by rough handling and also controls that have had the knobs mashed in which can destroy the potentiometers they are connected to.

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