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Unexpectedly good EL84 amp
Unexpectedly good EL84 amp
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Old 23rd October 2019, 07:54 AM   #161
carlthess40 is online now carlthess40  United States
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Join Date: Oct 2017
Location: Lake Mary Florida
Very nice build
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Old 23rd October 2019, 11:07 AM   #162
chede is offline chede  Germany
... fascinated by amps
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Location: In the Düsseldorf suburbs
Unexpectedly good EL84 amp
Hi Peter,

your amp looks great ! Glad that you enjoy it so much as well

Where did you get the trafo covers ? They look very professional.

With regard to the heatsinks for your current sources, you may fix them to the PCB with hot melt glue (provided that they don't get extremely hot in use ... ). That should at least protect the leads of the LM317s when transporting the amp.

Also, I would recommend securing the Mundorf caps with hot melt glue to the PCB. That not only helps for a safer long-time connection, but also can damp vibrations that originate from the power transformer ...


Best regards, Claas
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Old 23rd October 2019, 11:26 AM   #163
Hilko Peter is offline Hilko Peter  Sweden
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Join Date: Feb 2003
Location: Sjöbo, south of Sweden
Hi Claas,

Thanks! Good idea with glueing the capacitors. I'll check if if works for the heatsinks as well.

The transformer covers came from Aliexpress:
PAPRI 1PCS 85*85*100mm DIY Black Metal Transformer Cover Case Box HIFI Protect Cover Enclosure For Audio Tube Amplifier-in Amplifier from Consumer Electronics on AliExpress - 11.11_Double 11_Singles' Day
There are different sizes...
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