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#1
Posted to rec.audio.high-end
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hooking two tube amps together to power a stereo
Is there anyway to take two guitar tube amps and use them to power a
stereo system? For example: 1. Fender tube head powers left stereo channel 2. Marshall tube head powers right stereo channel What kind of preamp is available that could work with #1 and #2? Or, is this an impossible idea? Thanks for any ideas on this. --- Entfred |
#2
Posted to rec.audio.high-end
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hooking two tube amps together to power a stereo
On Sep 24, 8:53=A0am, FedUp wrote:
Is there anyway to take two guitar tube amps and use them to power a stereo system? For example: 1. Fender tube head powers left stereo channel 2. Marshall tube head powers right stereo channel What kind of preamp is available that could work with #1 and #2? Or, is this an impossible idea? Thanks for any ideas on this. --- Entfred Sure but why would you want to do this. Guitar amplifiers have low fidelity and will have considerable distortion when run at high power levels. This provides the unique and to many people the preferred sound of an electric guitar. For general musical playback this is extremely undesirable since the resulting intermodulation distortion will be very objectionable to a great many listeners. |
#3
Posted to rec.audio.high-end
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hooking two tube amps together to power a stereo
On Sep 24, 8:53=A0am, FedUp wrote:
Is there anyway to take two guitar tube amps and use them to power a stereo system? For example: 1. Fender tube head powers left stereo channel 2. Marshall tube head powers right stereo channel What kind of preamp is available that could work with #1 and #2? Or, is this an impossible idea? First the short answer: Yes, you can do this. And any decent pre-amp with a line-level output may be used to feed the power-amp. You will have to use a fixed output level from the pre-amp (Line Out), not the variable output unless you are very careful on how you adjust both the volume controls. Now the longer answer. Most guitar electronics are best described as "interesting" when it comes to actually playing music. In many cases, what goes out is at best the first cousin of what goes in and in many cases not even from the same family. But not all cases. Writing for myself and my direct experience with the species, a friend of mine brought me two classic Marshall amps about a year ago, both in type and vintage (both late 70s all-tube units) that were simply not working. Hum, buzz, and it would not pass any signal. For the record, I am a audio person. He brought them to me as I know a bit about servicing tube stuff, but until that moment I had never touched a guitar amp. He is poor, I don't charge for my hobby, so it works out. So, what did I do but treat one just as I would an audio amp. Cleaned up the power-supply, cleaned up the rectifier circuit, cleaned up the internal caps, resistors and other junk in the circuit, pretty much replaced all the passive components with good resistors and caps and installed a dual-element fuse rated at much closer to the actual full- load draw (~6A) than the beast (15A) that was in there. What came out was a reasonably OK tube amp that would push at 100% of the rated load at about 5% THD. And he could use the controls to add additional effects if he wished. The other one I simply replaced the individual bad components with or-equal to factory. It was at about 10% THD already at about 90% of rating, and promptly blew the D/E fuse after that. He opted for both being given the "full" treatement. I am quite sure that many - even most - would have opted for the or-equal treatment. Point being that guitar amps do not require high-fidelity as their first goal. They are to make noise and (presumably) not burn up while doing so. At very low levels they may be reasonably accurate - but at any volume, not so much. Peter Wieck Melrose Park, PA |
#4
Posted to rec.audio.high-end
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hooking two tube amps together to power a stereo
I was thinking of experimenting with this for the "warmth" of the tube
amps - not to get guitar harmonic overdrive distortion. [ quote snipped -- dsr ] |
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