joys
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Last Activity: 23rd November 2009 07:15 PM
About Me
- About joys
- Biography
- Happy, giving, warm, I hope!
- Location
- Motala, Sweden
- Interests
- True aufiophile, loves to paint and sketch, cooking computer programming.. a tech-nerd.
- Occupation
- Web-design and audio-design
- Country
- Sweden
- Real Name
- Joaquim Ottoson
Blog
View joys's BlogRecent Entries
Latest Blog Entry
Posted in Uncategorized
I'll start today and let's see how long it'll take me to finish this article, about an easy to build and cheap amplifier, with ECL86 or with a few tweaks an ECL82 can be used. This is actually not my totally own design. It's taken from the 'Muller' Tube Manual, but I added a input stage with tone control 2 or 3-ways, depending on your flavour. And a loudness-control...
What you need accept the passive components are;
(double up all parts for a stereo-amp.)
One EF86 - high-mu signal-pentode, for the tone-ctrl and gain-stage.
One ECL82/86 driver and power pentode for our SE-AMP.
One output transformer, Z = 7k - 10k(if you want to build a stereo, make sure you use the same brand and model, the core and turn-ratio is critical, if you desire the same sound from each channel!)
One power-transformer(mains), 230 - 250V@100ma(or 160 ma for stereo) and 6V3@2-4A(4A for stereo).
I've based my design on this article, from a magazine, printed in...
What you need accept the passive components are;
(double up all parts for a stereo-amp.)
One EF86 - high-mu signal-pentode, for the tone-ctrl and gain-stage.
One ECL82/86 driver and power pentode for our SE-AMP.
One output transformer, Z = 7k - 10k(if you want to build a stereo, make sure you use the same brand and model, the core and turn-ratio is critical, if you desire the same sound from each channel!)
One power-transformer(mains), 230 - 250V@100ma(or 160 ma for stereo) and 6V3@2-4A(4A for stereo).
I've based my design on this article, from a magazine, printed in...
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