Unexpectedly good EL84 amp - Page 17

carlthess40 · 23rd October 2019, 07:54 AM

Very nice build

chede · 23rd October 2019, 11:07 AM

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

Hilko Peter · 23rd October 2019, 11:26 AM

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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23rd October 2019, 07:54 AM	#161
carlthess40 diyAudio Member Join Date: Oct 2017 Location: Lake Mary Florida	Very nice build

23rd October 2019, 11:07 AM	#162
chede ... fascinated by amps diyAudio Member Join Date: Jan 2016 Location: In the Düsseldorf suburbs	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

23rd October 2019, 11:26 AM	#163
Hilko Peter diyAudio Member 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 8585100mm 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...