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Re: discWelder Recorder?

Hi All,

Here is the system for recording vinyl to 96/24 that has evolved over the last month here at rancho cascadia...

The path:
TT: Lightly modified Thorens TD160 with Grado prestige cartridge.
Preamp: My personal phono preamp design
Level controll: Dave Slagle autotransformer volume controll
ADC: M-Audio transit USB sound card, lightly modified connected to IBM Thinkpad 600E.
Recording software: Ableton Live supplied with sound card.
Editing software: Cool Edit 2000 or Cool Edit pro 2.
DVD burning software: Audio DVD Creator 1.9.0.0 by Goland Tech LTD.
Playback: Any DVD player. I'm using a modified Pioneer DV563-A in my main system.

The results of this system are very nice. The sound quality of vinyl comes through very well. Not at all like when trying to transfer to the redbook CD format.

The Thinkpad 600E is a 366Mhz laptop with 296M ram running Windows XP . This is below the recommended 500Mhz minimum that M-Audio suggests. As long as you don't mess with the PC while it is recording it works fine. Task manager shows the processor load at 89-95% of max during recording sessions. Due to the small hard drive on the Thinkpad 600E the data stream is sent over a 100 megabit network connection to my desktop system where it is stored on a 200G drive. The editing of the recording into seperate .wav files, removal of the larger clicks and pops and burning to DVD is done on the desktop system.

One neat thing about Audio DVD Creator is it uses the DVD-V format, not DVD-A. This means that the disks will play on any DVD player, not just newer players that support DVD-A. It is also a very inexpensive shareware package at $39.95. See http://www.audio-dvd-creator.com/

The M-Audio transit seems to do a very good job recording but it's playback capabilities are just ok. In the Transit's record path there is only 1 series resistor and 1 coupling cap between the input jack and the ADC chip. On playback there is a opamp buffer chip and coupling cap and handfull of resistors after the DAC chip.

Question for the digital USB gurus out there: Does USB recording have the jitter issues that USB playback does? If not this could explain why the Transit records much better than it can do playback.

Gary


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