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previous: frankenstein Just built a 5E3 and it's GREAT... ... -- 3/15/2002 7:19 PM View Thread

Re: need more headroom

3/16/2002 5:45 PM
Bruce /Mission Amps
Re: need more headroom
310 vdc on the plates... is that as measured to ground or from the plates to the cathodes?  
Makes a difference.  
With lower B+ I'd expect your amp to be very slightly overbiased and running a little bit cold if you are using a 250-270 ohm cathode resistor.  
A bit more headromm can be achieved at a tonal cost, that being the "tweed Deluxe tone thing".  
One of which is reducing some of the bass response and limiting the signal going into the driver triode a bit.  
Give up some more voltage data and I can help out a little more.  

frankenstein Bruce: Thanks for your response. I ... -- 3/17/2002 5:32 PM