SSlmixed.com Forum

Tech discussion => 4K,6K,8K Series => Topic started by: horizonsound on December 07, 2019, 12:59:16 AM

Title: SSL Computer Service Manual.
Post by: horizonsound on December 07, 2019, 12:59:16 AM

Hey all,

Would anyone be able to sort me out with parts of the Computer Service Manual?
I have an opportunity to pick up a lot of cards and parts, and just need to check on compatibility.
In particular, there appears a few versions of the main Mother Card 82E120?

Thanks in advance.

Title: Re: SSL Computer Service Manual.
Post by: ULH on December 12, 2019, 12:20:59 PM

Hi

To my knowledge it is not very clear in the G Series Computer Service manual but Keith @ Recucled Audio got you covered:

https://www.recycledaudio.co.uk/consoles/ssl-faq-info/e-g-g-whats/

Quote

The term “E series” means that it can only run on original E series software and 8″ floppies, the memory is too small for later versions. Early ones had a 430 processor, later ones had 490 processor which, with a memory upgrade, can handle G series software up to console sizes of 56 channels. Also if you can find a SASI card the 490 can be used with 3.5” drives making it a G+ computer.
The term “G series” means that it can run G series software. These computers have either a 490, 4100A or Forman Hart processor with 2mb memory card which can run on 8″ floppies and use 20mb Bernoulli deives for extra storage.
The term “G+” means that the computer either has a 4100C processor of a Forman Hart/490/SASI combination and can run on 3.5″ floppy drives.

And the first pages of this in general great computer overview also from keith:

https://www.recycledaudio.co.uk/wp-content/uploads/2018/01/computerconfiguration.pdf

Hope this helps. Maybe we should try to document this a bit more to stay on top of SSL computer maintenance in the future?

Cheers,
Uffe

Title: Re: SSL Computer Service Manual.
Post by: horizonsound on December 13, 2019, 12:30:42 AM

Thanks there Uffe,

I have a full G+ computer on the way and a service manual, and will be building a PSU for the computer.

Does anyone have some schematics for the SL665E computer PSU?

On a side note, the PSU that I built for my console has been performing flawlessly over the past 2 months. Very happy with the results there.

Anthony.

Title: Re: SSL Computer Service Manual.
Post by: ULH on December 13, 2019, 08:48:13 AM

Yes it is in this manual:

http://forum.sslmixed.com/index.php/topic,428.0.html

Regards,
Uffe

Title: Re: SSL Computer Service Manual.
Post by: ULH on December 13, 2019, 08:49:38 AM

Could you send a link about your console psu? Sounds interesting. Thanks!

Title: Re: SSL Computer Service Manual.
Post by: horizonsound on December 13, 2019, 10:22:59 PM

Hi Uffe,

Here are some pictures :-

(https://scontent.fmel5-1.fna.fbcdn.net/v/t1.0-9/68895439_2786028691425656_1647518384952180736_n.jpg?_nc_cat=110&_nc_eui2=AeEUercdIllRIDZ5AO4A8WqY8FqaaIk_NTEJcGvoHXdS_VIczrnMyf9_F7MbWVlFIXu5yIhM63p2z5cvtBerfZiXDDYJPPyfg2yVfVbuamJGAw&_nc_oc=AQlndfvTr-vFnuTn745CEvbzU-16tthNcyUOjWNEWiFTLuKeXkjLWY7NKBtNn9ETJno&_nc_ht=scontent.fmel5-1.fna&oh=055b16397afabda5e4c61bddfc6678a6&oe=5E68B56C)

(https://scontent.fmel5-1.fna.fbcdn.net/v/t1.0-9/69574690_2800324093329449_1714224634422886400_o.jpg?_nc_cat=106&_nc_eui2=AeFTi0ouwlhMSVTaYTD7uA_xXkbl2gIT5LUdPjTTROCGS9Yu9OV3ZyjdTTmzqRfX2YHVaYD4zE4vKUqZU4dF4J-Q0Cg1bKX3S7TNRLOfO6NADg&_nc_oc=AQlYgO-XpfuYQL6QaZ5MGZvU4-DM0wWU1izalnLhoegwbxjKH6tSu77qGYQDJDxM_5k&_nc_ht=scontent.fmel5-1.fna&oh=97a9d730fd7086a323edecb7f2014edc&oe=5E831BA0)

(https://scontent.fmel5-1.fna.fbcdn.net/v/t1.0-9/69856281_2800558909972634_5030218160377167872_o.jpg?_nc_cat=108&_nc_eui2=AeElUCshvBn_GCjFPgypr1bOeWfXoFeDHPwfQgzCL7BzYYjbDRVFDzVZ-lPYDf0dU-vwqTHW2S12iwjL5UuvAmqgI8dPRJUl4j-Fs2k3uVDqqQ&_nc_oc=AQm3sg9ek9iaQqyjV16vXd85SRMpNZC5ItWPVKWBej2bCKAKDHBfimmnI46zIV69tDE&_nc_ht=scontent.fmel5-1.fna&oh=596b8e7426712b444039ac538b88b07b&oe=5EB488F8)

Title: Re: SSL Computer Service Manual.
Post by: ULH on December 14, 2019, 08:48:40 AM

Nice. I have made something very similar for a Euphonix controller including sense wires to the Mean Well supplies. Which mean well models did you use for the +-18v rails?

Title: Re: SSL Computer Service Manual.
Post by: ULH on December 14, 2019, 08:54:02 AM

And have you done any measurements  on the noise floor vs a normal linear supply? I believe there should not be any switching noise components in the audible area? And these design are very price competitive

Title: Re: SSL Computer Service Manual.
Post by: horizonsound on December 15, 2019, 05:46:59 AM

Hi,

The modules used were RPS-500-18-SF, RSP-150-7.5, and RSP-150-48.
Original fans in the 18v modules modded for Sunon HA40201V4-1000U-A99

I've not done any comparative tests as I have never owned a CF661E supply, but I can say that the noise is about 10 times lower than what is coming back off my Lexicon reverbs in the rack.

Anthony.

Title: Re: SSL Computer Service Manual.
Post by: ULH on December 15, 2019, 08:36:24 PM

Thanks for the info  :)