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previous: music Thats, can i put a gz34 instead of ... -- 1097110728 View Thread

Re: gz34

10/7/2004 4:05 AM
JPRe: gz34
Probably not w/o any modifications (someone else is going to need to chime in here) as the GZ34 (5AR4) will drop significantly less voltage than the 5Y3 which means you risk exceeding the max dissapation of the pre & power tubes which means you risk limiting their lifetime.  
 
All things being equal you'd get less headroom (earlier breakup), more sag/slower rise times (compression), looser bass, and less voltage w/ a 5Y3 and more headroom, faster response, tighter bass, and more voltage with a GZ34.  
 
You might find these links useful.  
 
http://www.guitaramplifierblueprinting.com/rectifiers.html  
http://tdsl.duncanamps.com/tubesearch.php