getone
Member
Dear Members.
I have a nice pair of EICO HF-12s and they sound awesome. I guess a HF-12 is kind of half of the EICO HF-81.
I also got an RCA RS-177H iron from a console. I have restored it, but even with the radio/preamp it came with does not sound nice.
Would it be possible to turn the RCA iron into a EICO HF-81 just by adding one more socket (for a 12ax7) and use the existing transformers, B+ section. In other words, just replacing / adding capacitors and resistors?
Thanks!
Schematics:
http://vintagevacuumaudio.com/schematics-manuals/eico/eico-hf-81-owner-manual-schematics.pdf
http://www.audiokarma.org/forums/showthread.php?t=136727 post#9
I have a nice pair of EICO HF-12s and they sound awesome. I guess a HF-12 is kind of half of the EICO HF-81.
I also got an RCA RS-177H iron from a console. I have restored it, but even with the radio/preamp it came with does not sound nice.
Would it be possible to turn the RCA iron into a EICO HF-81 just by adding one more socket (for a 12ax7) and use the existing transformers, B+ section. In other words, just replacing / adding capacitors and resistors?
Thanks!
Schematics:
http://vintagevacuumaudio.com/schematics-manuals/eico/eico-hf-81-owner-manual-schematics.pdf
http://www.audiokarma.org/forums/showthread.php?t=136727 post#9