Gang,
I have a real good customer who bought a system from me back in 1994. Napoleon 300B driving TRIO horns, CEC huge transport and so forth. He upgraded his system 2 weeks ago to a Triton Silver 300B amps, Tempest Silver Preamp and so forth.
He is moving the Napoleon's into his home office with some DeVore speakers and wants to bring the CEC transport down to spin CDs. I know tried to convince him, but heck the transport probably cost him $17,500. It's nice I have used them at CES shows way back.
Anyway so he wants my Pelham DAC (71A Directly Heated triodes, differential NOS, optically isolated USB, transformer coupled and isolated digital) but with a BNC SPDIF input. Luckily the Pelham USB board is a module, so I can remove that module and sub in an SPDIF and change the back panel and be done.
So this is basically a 16/44.1 system, I have designed the following ones so far and wondering if the time and effort is really worth it:
1) Have a bunch of CS8412s so I came up with a slave using a (have a bunch of these as well) Valprey Fisher VCXO I have at 2.8224Mhz really low jitter 100ppm pull. VCXO DPLL 74HC590A, 74HC86 to create the DATA+ and DATA-.
1a) Use a TentLabs 11.2896Mhz VCXO same as above, possible reclock with 74HC175 dump the 74HC86.
2) CS8412 Master Mode, Crystek 22.5792Mhz VCXO DPLL reclock (SCLK, WCLK, DATA+/DATA-) using a 74HC175, Q0- to D0 divide by 2 ->DPLL CS8412 MCLK into DPLL.
3) CS8412 Slave, Crystek 22.5792Mhz VCXO divide by 2 split into DPLL and ->74HC590A create SCLK, WCLK, possible reclock as well. Use 74HC86 all 4 to create and time SCLK, WCLK, DATA+/DATA-.
4) Punt go with WM8804 live with 50ps of jitter take output into 74HC86 all 4 to create and time SCLK, WCLK, DATA+/DATA-. Use a TXC low jitter 11.2896Mhz crystal.
I have a bunch of these custom made SPDIF input transformers I had made 2000 for SPDIF data to 24/96. That is why I kind of like the CS8412, plus it's 5V which seems to work better for the NOS thing.
Thoughts before I pull the plug? Thanks in advance!
Gordon
I have a real good customer who bought a system from me back in 1994. Napoleon 300B driving TRIO horns, CEC huge transport and so forth. He upgraded his system 2 weeks ago to a Triton Silver 300B amps, Tempest Silver Preamp and so forth.
He is moving the Napoleon's into his home office with some DeVore speakers and wants to bring the CEC transport down to spin CDs. I know tried to convince him, but heck the transport probably cost him $17,500. It's nice I have used them at CES shows way back.
Anyway so he wants my Pelham DAC (71A Directly Heated triodes, differential NOS, optically isolated USB, transformer coupled and isolated digital) but with a BNC SPDIF input. Luckily the Pelham USB board is a module, so I can remove that module and sub in an SPDIF and change the back panel and be done.
So this is basically a 16/44.1 system, I have designed the following ones so far and wondering if the time and effort is really worth it:
1) Have a bunch of CS8412s so I came up with a slave using a (have a bunch of these as well) Valprey Fisher VCXO I have at 2.8224Mhz really low jitter 100ppm pull. VCXO DPLL 74HC590A, 74HC86 to create the DATA+ and DATA-.
1a) Use a TentLabs 11.2896Mhz VCXO same as above, possible reclock with 74HC175 dump the 74HC86.
2) CS8412 Master Mode, Crystek 22.5792Mhz VCXO DPLL reclock (SCLK, WCLK, DATA+/DATA-) using a 74HC175, Q0- to D0 divide by 2 ->DPLL CS8412 MCLK into DPLL.
3) CS8412 Slave, Crystek 22.5792Mhz VCXO divide by 2 split into DPLL and ->74HC590A create SCLK, WCLK, possible reclock as well. Use 74HC86 all 4 to create and time SCLK, WCLK, DATA+/DATA-.
4) Punt go with WM8804 live with 50ps of jitter take output into 74HC86 all 4 to create and time SCLK, WCLK, DATA+/DATA-. Use a TXC low jitter 11.2896Mhz crystal.
I have a bunch of these custom made SPDIF input transformers I had made 2000 for SPDIF data to 24/96. That is why I kind of like the CS8412, plus it's 5V which seems to work better for the NOS thing.
Thoughts before I pull the plug? Thanks in advance!
Gordon