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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: A dumb question... posted by stevenk on March 19, 2002 at 19:11:25:
It depends upon the design of the amp. 6550's require a little more heater current (1.8 amps versus 1.5 for the EL34), which probably won't present much of a problem for the input transformer, but the 6550 requires more negative bias than the EL34. If your amp has user variable bias, it can probably be set to accommodate the 6550, but if it is fixed bias, you may have to change the bias resistors. You should check with the amp manufacturer. My AES DJH version Superamp has variable bias, so I am able to run 6550, KT88, KT90, EL34, KT77, 6CA7, 8417, 6L6 variants. If someone has other experiences please correct me.
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- Re: A dumb question... - rlawry 07:55:04 03/20/02 (0)
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