• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

RH84 finish!

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#5
Tim,
Nice job on the RH-84 amp. I have been wanting to build one for a while. Here is the photo of your amp I uploaded to my website so others can see it.

What transformers did you use?

Regards,
Sal

rh84.jpg
 
#7
tim614 said:
Trout said:
Can not look at photo's unless you sign up for snapfish account.
Click to expand...


i do have an acount
Click to expand...

Your account doesn't do anything for any of us.

Attach the photo to the forum database. Use the "Choose file.." button at the bottom of the edit window, and in the dialog that pops up choose the picture you want (max 100 kB, 1000x1000 pixels). Do not try to preview the post.

I will remove all the failed attempts to keep the thread clan

dave :cop:
 
#12
Congratulation on the clean and precise work: I imagine you are satisfied with the sound.

Still, I have never built anything in such fashion: either it is PCB (designed for the purpose) or point to point soldering where the wires of the elements (i.e. resistors and caps) are used (possibly) without any additional wires, while heating is done by twisted wires that are aligned to some points of the layout where they have the least effect on the overall performance (hum).

Good work!
 
#13
Alex Kitic said:
Congratulation on the clean and precise work: I imagine you are satisfied with the sound.

Still, I have never built anything in such fashion: either it is PCB (designed for the purpose) or point to point soldering where the wires of the elements (i.e. resistors and caps) are used (possibly) without any additional wires, while heating is done by twisted wires that are aligned to some points of the layout where they have the least effect on the overall performance (hum).

Good work!
Click to expand...


Thanks Alex!
the amp sounds very nice indeed but there is a litle HUM not like my first RH (dead quiet) im suspecting the filament wire need to be move away from the HV to reduce hum hopefully that should work, i know i got alitle fancy on the layout , as allway i learn
a bit more every time 😀
 
#16
Hi,

I am considering building this amplifier from scratch. Does anyone have a parts list they can share? I'm looking for decent parts, but not terribly expensive. I'm willing to put around $150 to $200 into output transformers and a power transformer to get really good sound. Any help here is greatly appreciated.

Thanks
 
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