Marantz 8b tubes

mr2racer58 · 14th March 2010, 09:36 PM

Hey Everyone,

I'm building a Marantz 8b copy with a modern power supply and Acrosound TO300 output transformers. The Acrosounds are limited to 75ma per tube so that would be 600ma total. My question is, does anyone have recomendations on which would be the best output tubes to use?

The original Marantz used 6CA7's or EL 34's for a 35 watt amp. Acrosound recommended KT66, 5881, 6L6, 1614 or 807 output tubes. I'm partial to JJ tubes so the 1614 and 807's are out.

Any recomendations? The TO300 is capable of 20 watts from 20-30k and 40 watts from 30-20k I would like to be in the 35 watt neighborhood.

Kevin

OneyedK · 14th March 2010, 09:45 PM

If you want to stick to JJ, 6L6GC's are the way to go.
Very clean and tight sounding.

I like the Genalex KT66 RI better, but that's personal...

cogsncogs · 14th March 2010, 10:08 PM

Easy...6600 primary...Marantz 8b copy...35 watt neighborhood...6CA7/EL34 i.e. JJ34L.

Marantz 8 B : Output Transformer

14th March 2010, 09:36 PM	#1
mr2racer58 diyAudio Member Join Date: Jan 2010	Marantz 8b tubes Hey Everyone, I'm building a Marantz 8b copy with a modern power supply and Acrosound TO300 output transformers. The Acrosounds are limited to 75ma per tube so that would be 600ma total. My question is, does anyone have recomendations on which would be the best output tubes to use? The original Marantz used 6CA7's or EL 34's for a 35 watt amp. Acrosound recommended KT66, 5881, 6L6, 1614 or 807 output tubes. I'm partial to JJ tubes so the 1614 and 807's are out. Any recomendations? The TO300 is capable of 20 watts from 20-30k and 40 watts from 30-20k I would like to be in the 35 watt neighborhood. Kevin

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14th March 2010, 09:45 PM	#2
OneyedK diyAudio Member Join Date: Oct 2007	If you want to stick to JJ, 6L6GC's are the way to go. Very clean and tight sounding. I like the Genalex KT66 RI better, but that's personal...

14th March 2010, 10:08 PM	#3
cogsncogs diyAudio Member Join Date: Jul 2003 Location: Wayne, West Virginia	Easy...6600 primary...Marantz 8b copy...35 watt neighborhood...6CA7/EL34 i.e. JJ34L. Marantz 8 B : Output Transformer