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Re: 5881's to EL34's: help?!?

2/17/2000 7:33 AM
Carlo	Re: 5881's to EL34's: help?!? First, make sure the screen grid (pin 4) resistors are at least 1K at 5 watts. If not, You need to change them from the 470 ohm 5-watt, that are in the amp, to 1k-5 watt. Make sure that pins 1 (suppressor) and 8 (cathode) of the output tubes are tied together and to ground. The 5881 doesn't use pin 1. You might have enough bias with out changing the bias resistor. You'll have to try it and see. Do you know how to bias the amp? I hope this helps. Carlo

2/17/2000 7:33 AM

Carlo

Re: 5881's to EL34's: help?!?

First, make sure the screen grid (pin 4) resistors are at least 1K at 5 watts. If not, You need to change them from the 470 ohm 5-watt, that are in the amp, to 1k-5 watt. Make sure that pins 1 (suppressor) and 8 (cathode) of the output tubes are tied together and to ground. The 5881 doesn't use pin 1. You might have enough bias with out changing the bias resistor. You'll have to try it and see. Do you know how to bias the amp? I hope this helps.

Carlo

Replies:

jason Also keep in mind that the EL34's p... -- 2/17/2000 2:37 PM