A look into the Revox A77 and its restoration
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- Опубликовано: 30 июн 2019
- The Revox A77 was well ahead of its time when it got onto the market. Even today an interesting peace of equipment that is fun to you and that sounds pretty good.
In this episode I am providing an idea around restoration process withe the help of the documentation that came with an excellent restoration kit from Nagravox.
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Thanks for this exellent video. The best starting point video on the subject here on YT 👍
I have an A77 and from the looks of your pictures it is a MK IV. I had to do a couple things mechanically to it but it works great and is a 2 track version with 3.75 and 7.5 ips. Good sound is effortless on it. Thank you for sharing.
Cool video mate. I have been using an A77 lately to record either stems from my mix or wholes tracks too. It's really fun and interesting exploring the saturation you get. It would be great if you were to upload another informative video of the operation process, general usage, upkeep of the machine and anything else. Id be really keen to see that. Great video on this one!
Good work and video , thx! Here in in Switzerland where is the original birthplace of these reel to reel tapemachines. I do revisions. I usually replace the potentiometers with new closed ones.
Excellent video from a fellow Revox lover.
excellent video, I subscribed to your channel !! Thank you very much for all that information !! I'm about to buy a revox a77, where can I get the link to download the manual you used for repairs? Thanks!!
Hi. Great video, thanks. Could you link to this upgrade/refurb product? Many thanks! Edit: Found them! Thanks.
That component list for the 1.077.725 capstan speed control board at 8'41" in the video is the only place I've seen a possibility of P201 being 2.5K. The schematics I have seen all say 1k so when it fell to bits recently, 1k is what I ordered only to find it fitted with a 2.5k pot' when I removed it. It looked as if the old pot' had been set around 1k so I cut one of the PCB tracks and bridged the gap with a 470ohm resistor which does give a finer control of the 800Hz signal from the tacho head at 3.75ips.
Hi, mine has been in storage for a long time....the right wheel head seems to be frozen...thoughts!
How could one get the service doc.of 117 pages, do you have a link or reference to help us and our Revox machines? Thank you !
Can a 2 track A77 properly erase a previously recorded 4 track tape from a Technics RS1506 ?
Hi mate, could you tell me where can I get this restoration kit please? I've a Mark IV and it needs to be restored, TKY
If a electrolytic capacitor shows a higher value than it should be could be a sign that the capacitor is leaky.
Do you sell upgraded boards to the consumer?
The tape recorder does not play from the tape. You can see the selector on the input, not NAB or IEC, the inputs on AUX. On the A77, normally during playback, the vumeters do not work, only with an artifice... so
Do you have a link to the full service manual please.
Hi. I just get mk4, 4 track. Is there possibility to convert it to 2 track?
I found last year a Revox on the sidewalk thrown away as garbage, it should be possible to restore it.
@ClassicHiFiReviews
I own two A77s, a half-track running 15 ips and a quarter track running 7 1/2 ips. These things were like buying cars, lots of options. Your basic A77 came quarter track with 3 3/4 ips & 7 1/2 ips. You could specify quarter track or half track, with any two adjacent speeds, 1 7/8 ips to 15 ips. For extra money you could get full track, continuously variable speed, built in power amps and speakers, Dolby noise reduction or a stainless steel veneered front. Inside, as you know, it's built like a brick shithouse, and the service manual is a masterpiece. At one time I used a Lamb Laboratories 4-channel mixer the same size, shape and appearance as an A77. I use digital mixers, now, and a DAW. Digital has it all over analog by any measurement parameter you can name. But NOTHING sounds like analog, and I'll never part with my A77s!