The TA-5650 heatsink is slightly larger with space for 8 sk/sj the 4650 and 8650 share the same heatsink (2 off in the 8650 for 12 transistors).
I have a spare 4650 HS and a fully working 4650 pre-amp vfet stage, so am very interested to see what you are doing with your build. I have a couple of spare 2SK60s that I could use in a roll your own design.
Any more details on the amps and voltage doubler would be appreciated. Maybe move to a new thread “V-Fet round3 roll your own”
Hi, jonboylaw. Yes. As soon as I win either another board lottery, or NP and the store release the boards for 2SK60 (or SKJ18), I will be using the 4650 chassis for the build. The small 1 amp 20V SMPS powers the preamp fine and sounds great, no discernible noise. I have a small voltage booster attached to it, and that so far also powers the 100v phono stage. It needs shielding, however, it hums, and I am figuring that out now. So far aluminum foil shields it.
I will include pix as I go along. I will have a second 36v (??) SMPS that will fit internally for the amp stages.
The second SMPS should fit fine inside the chassis @75w/channel for the 10 (??) watts class A or so per channel.
This is only my second DIY after the Korg preamp, so it is a learning process as proceeding.
I will include pix as I go along. I will have a second 36v (??) SMPS that will fit internally for the amp stages.
The second SMPS should fit fine inside the chassis @75w/channel for the 10 (??) watts class A or so per channel.
This is only my second DIY after the Korg preamp, so it is a learning process as proceeding.
I was hoping for a bit earlier since the units are shipping now and I expect mine by the end of the week. Even the schematic would suffice for now, with the wiring diagram being a help. Not looking for a full blown build guide.
Thanks.
Yes, I remember from The Pumpkin and The Shunty days. Still have the boards and all the parts to build them. Just need the time.
