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Registered Member #1412
Joined: Thu Mar 27 2008, 04:07PM
Location: Taipei Taiwan
Posts: 278
If I want use 6L6 in this amp instead of EL34,should I change anything?
I want to use 6L6 because original British EL34 is very hard to find and expensive and I don't want to use Chinese EL34. I can find metal shell RCA 6L6 at much lower price.Can I use them in this amp?
Will this modification reduce or increase distortion of this amp?
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Be careful with the metal shell 6L6s. They have lower voltage and current ratings than the EL34. You want the glass envelope 6L6GC, which is considerably higher rated.
You may need to adjust the cathode resistors, R107, 108, 207, 208.
The Russian 6P3S-E is similar to a 6L6GC and is cheap and robust. Not sure of its sound quality in a hi-fi amp, but it works well in guitar amps.
Japanese Matsushita 6CA7 tubes were very similar to Mullard EL34s. I ran my hi-fi amp with a pair of Matsushitas in one channel and a pair of Mullards in the other, and it sounded pretty fine! Maybe you can find some cheaply in Taiwan?
I refuse to pay the crazy prices, but since I live in Britain, I can sometimes salvage tubes from ancient lab equipment.
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Can I substitute EL34 with 6L6?
Maybe you can find some cheaply in Taiwan?