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KT88 se build NO GAIN please help
KT88 se build NO GAIN please help
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Old 25th February 2008, 10:33 AM   #1
soundbadger is offline soundbadger  United Kingdom
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Default KT88 se build NO GAIN please help

hello there
i have just finished construction of an se kt88 stereo amplifier based on mikeal abdellas design.

however upon firing it up i noticed i am not getting any gain.
with a dual channel scope viewing the input and out output it can be seen theat the output is lower than the input (input just under 3v pk-pk and output just over 1v pk-pk)

all voltages throughout the amp seem fine

if any one who has build this amp has any ideas please let me know.

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Old 25th February 2008, 04:52 PM   #2
kevinkr is offline kevinkr  United States
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KT88 se build NO GAIN please help
Output jacks shorted to chassis? Input jack shorted to chassis? Come back after a good night's rest and look very carefully for wiring errors.
Check for grounds where they don't belong and shorts with a dvm..
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
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