Re: How does your mod benefits the SCD-1 balanced out?

Posted by Allen Wright (M) on February 15, 2003 at 09:57:12

In Reply to: How does your mod benefits the SCD-1 balanced out? posted by jeromelang on February 14, 2003 at 18:07:15:

Jerome,
The complex way SONY do the balanced outputs on the SCD-1 has been commented on here before.

To recap:
1/ The digital signals in the SCD-1 (and all the VC24 based players) are in Balanced format
2/ SONY then convert the Balanced analog signal that appears after their "current pulse" DACs into Unbalanced format, using several opamps
3/ They then filter the signal in Unbalanced format, with more opamps
4/ This Unbalanced signal is then output on the RCA jacks of all these players.
5/ But then, in the SCD-1 only, this unbalanced signal is RECONVERTED to a Balanced format and output on the XLR sockets - using even more opamps!

With my Upgrade, if you want a Balanced output we use a Balanced version of the module that taps off the Balanced digital signal and converts it directly to a Balanced analog signal - and outputs it to the existing XLRs (SCD-1) or to new XLRs (fitted as part of the upgrading proceedure) for the machines that normally only have unbalanced RCA outputs.

And instead of the signal being handled by NINE opamps to get to SONY's balanced outputs - we only use three discrete transistors per signal path, which I consider is doing more with much less!

Allen (VSEI)

PS We currently can add balanced outputs to these normally unbalanced machines:

SCD-777ES, 9000ES, SCD-555ES (european model), SCD-C333ES (US) and the European/Asian XB940

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Follow Ups Full Thread

Topic - Am I crazy? Giving up Marantz CD7 for an SCD-1?? - medula mondatta 10:12:48 02/14/03 (18)

Why not keep the CD7 and buy a cheaper SACD player ? NT - michael w 18:31:44 02/14/03 (3)

Funds: Technological redundancy: Space. nt - medula mondatta 01:46:17 02/15/03 (2)

What a shame , that CD7 will be a future classic NT. - michael w 14:43:14 02/17/03 (1)

I know! You could buy an SCD-1 for me! - medula modatta 10:10:09 02/18/03 (0)

Re: Am I crazy? Giving up Marantz CD7 for an SCD-1?? - Allen Wright 15:41:34 02/14/03 (8)

All you need to do now is make it battery-powered - level 3 perhaps? - jusbe 03:58:51 02/15/03 (1)

Re: All you need to do now is make it battery-powered - level 3 perhaps? - Allen Wright 09:23:30 02/15/03 (0)

Catch me, I'm falling. - medula mondatta 01:49:08 02/15/03 (1)

Any suggestions for a quick sale (of the CD-7)? - Allen Wright 09:31:19 02/15/03 (0)

How does your mod benefits the SCD-1 balanced out? - jeromelang 18:07:15 02/14/03 (1)

Re: How does your mod benefits the SCD-1 balanced out? - Allen Wright 09:57:12 02/15/03 (0)

Re: Am I crazy? Giving up Marantz CD7 for an SCD-1?? - Khorn 16:44:57 02/14/03 (1)

that last 1%... - Allen Wright 10:00:01 02/15/03 (0)

My SCD-1 blew away my CD7 in every regard. (nt) - JCS 14:46:21 02/14/03 (0)

Re: Am I crazy? Giving up Marantz CD7 for an SCD-1??NO - fmak 10:43:55 02/14/03 (1)

Re: Am I crazy? Giving up Marantz CD7 for an SCD-1??NO - medula mondatta 10:57:43 02/14/03 (0)

Re: Am I crazy? Giving up Marantz CD7 for an SCD-1?? - sgb 10:19:28 02/14/03 (1)

Stand in line! (nt) - Allen Wright 10:02:18 02/15/03 (0)

Follow Ups

Re: How does your mod benefits the SCD-1 balanced out? - Allen Wright 09:57:12 02/15/03 (0)

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