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The initial listening. I am quite happy.
Edits: 04/16/25
As there is no proper +5V power supply in the transport, I have to use +3.3V. So I need to change chip and recalculate the resistors. I ordered more parts on Mouser. Yes, it is doable.
Edits: 04/20/25 04/20/25 04/23/25
I tried to get a service manual from Cambridge for my CXC V2 CD transport. They said they can't give me one because the CD transport is still in production. This is fine. I can do the DIY SPDIF even w/o a service manual/ schematics.Before I did the modification to my Tascam CD-200, it sounded so poor I had to put it in storage. After the modification, it sounds much better (day and night). Now I will use it as my main CD transport in my music system 1.
Edits: 04/15/25 04/15/25
What happened?
In the past my Sony ES CD player with the DIY coax SPDIF sounds very nice as a CD transport. This Tascam CD-200 after a coax SPDIF mod is just as good. Now I have 2 nice CD transports.
I am considering whether do the same to my Cambridge CXC CD transport.
adding a couple op amps, resistors and caps do to the circuit?
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forgot he's using the CD player as transport.
Been a long time since I've used one.
The circuit that he added is primarily comprised of the 74HCT04, a LS/TTL compatible high-speed CMOS Hex Inverter and a pulse transformer.The inverters can be used as level converters, buffers, drivers.
Edits: 04/15/25 04/16/25
1. Added an isolation pulse transformer.
2. Added a true 75ohm RCA socket.
3. Added a strong driving circuit with true 75ohm impedance.Yes, after the mod you get a nice CD transport.
Edits: 04/13/25
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