Tape Machines > Reel to Reel Tape Machines
How you can convert your Revox B77 or PR99 into a Tape Project machine.
mstcraig:
A very timely article Arian. I own a B-77II and was just looking into a Seduction preamp, still am actually. Any chance a companion piece on modifying the record side to IEC is coming to complete the set? What would be really great is for somebody to design a standalone unit to do both-Record and playback to IEC specs as an outboard unit to use with anything. Anyone interested? Craig
Tubes n tapes:
Craig,
Changing the record EQ to IEC is not a big deal. I didn't go there in this article because, well designed as the reproduce section of the B77 is, the record section has a significant design flaw. So it is an easy modification to make the B77 a real good sounding playback machine, but to clean up the record section requires quite a bit more.
Anyone else interested in the record modification?
Concerning a standalone Record/Playback unit, that is not as obvious as it looks. Record and playback electronics have to be carefully matched to the heads that will be used. So generic circuits don't exist. For example a circuit designed for the Revox B77 heads will already show deviations of more than 3dB when used on Studer heads. That's actually worse than the difference between NAB and IEC. And those heads are still of substantially the same pedigree. Imagine what happens if you would use Japanese heads that have significantly different constructions.
Tubes n tapes:
I didn't mention it clearly in this thread, but the modification article describes how you can convert a dead standard 3 3/4ips & 7 1/2ips NAB B77 or PR99 into a significantly better sounding 7 1/2ips NAB & 15ips IEC playback machine.
If you don't need the record function, this modification can be done without buying any new components.
It plays both your TP tapes as well as your standard 7 1/2ips NAB tapes.
Danny Kaey:
Arian, I just bought a 7 track Miele dishwasher... I'd like to be able to play pre-recorded Derrick tapes on that... any chance you can work your magic?
.......
hehehehe... :)
xcortes:
If smomeone is in Texas:
http://cls.audiogon.com/cgi-bin/cls.pl?misccass&1211728206
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