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Old 14th January 2008, 12:58 PM   #11
dell is offline dell  Philippines
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Default amp

What about using the sample applications of LM4702? Is worth trying?
Old 14th January 2008, 01:08 PM   #12
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Check this
Old 11th June 2009, 05:45 PM   #13
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Default esp project 117

pls can someone assist me in the biasing of this circuit coz tome its working but does the mpsa 42 and mje340,350 on the biase side have to overheat any assistance willbe appreciated
Old 11th June 2009, 05:45 PM   #14
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Default esp 117

there are 2 different cct of p117 one has 680ohms resistorwhile the other has 2.2 kohms on the bd681 transitor pls help for a genuine one
Old 12th June 2009, 01:24 AM   #15
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esp's website has a builder's forum for this amp. several builders have made them successfully
Vintage Audio and Pro-Audio repair ampz(removethis)@sohonet.net
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Old 30th January 2013, 02:12 PM   #16
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1.5kw any chenge this circute for better qality?
Old 30th January 2013, 03:22 PM   #17
Telstar is offline Telstar  Italy
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Resurrection? Isn't it a bit early?
"The total harmonic distortion is not a measure of the degree of distastefulness to the listener and it is recommended that its use should be discontinued." D. Masa, 1938
Old 25th May 2013, 09:51 AM   #18
lm324 is offline lm324  Brazil
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Location: São Paulo
Originally Posted by djk View Post
If you actually want a working amp, don't even think about the ESP design.

What I would so would be to build the Super Leach and go from two output sets per side to six output sets per side. With the proper transistors and a couple of other minor changes it will run from ±135V.

The difference of why this amp will work, and the ESP will not work is the series connected output stage.



What "other minor changes" ?


Old 25th May 2013, 09:56 AM   #19
AndrewT is offline AndrewT  Scotland
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Can we ask that this Thread be closed?
regards Andrew T.
Sent from my desktop computer using a keyboard

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