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  #1  
Old 5th April 2015, 05:14 PM
tasos25 tasos25 is offline
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Default opinion for schematics

hello
New to forum and hi end I want to build a tube amplifier and after much searching I found this projects
http://www.audio-talk.co.uk/fiultra/...trafi-crct.jpg
I would like if you kindly take a look and tell me your opinion what do you think about batteries for negative grid bias and another plan is this

http://www.audiodesignguide.com/SE300B/index.html
more than two is preferable to construct
Thanks for replying
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  #2  
Old 5th April 2015, 05:22 PM
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pre65 pre65 is offline
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Default Re: opinion for schematics

Hi

What speakers are you using ? And how many watts do they need for realistic sound levels ?

300b can sound really good, but there are very many ways to use them.
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Old 5th April 2015, 07:13 PM
tasos25 tasos25 is offline
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Default Re: opinion for schematics

hi
I want to use drivers fostex 206 or 208 with tweeter
As for watt i believe that 7-8 is quite Any suggestions me something else
Thanks for the quick reply
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Old 5th April 2015, 08:41 PM
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Default Re: opinion for schematics

I have made many valve amps since I started in 2006.

300b can be very good, but you need to get the right quality of parts to make it sound really good. But I suppose that could be true for any valve you use.

Personally, I'd suggest you have a read of this article.I found the GM70 (and GK-71 as a triode) to be "better" than any 300b amp I built.

http://www.diyparadise.com/nikcgm70.html
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Old 16th April 2015, 10:16 PM
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Default Re: opinion for schematics

I had a friend come round to compare his GM70 amp with my GK-71 amp.

There were differences in the sound quality (mine was a bit "warmer" ), but we both agreed they were better than the average 300b SET amp.

Just our opinions of course.
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