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CMI 11X channel card revisions

CMI 11X channel card revisions

2004-01-13 by James Thomson

Hi Guys,


 From what I understand the CMI 11X had 4 different revision channel cards
made for it. 

Rev 1 Curtis Filter chip

Rev 2 Curtis Filter chip

Rev 3 SSM Filter chip

Rev 4 SSM Filter chip

I would like to hear from other owners what the actual differences are. I
understand that the Rev 3 and 4 cards should sound warmer. Have any of you
noticed this ? I have not actually seen a Rev 4 card,do any of you have this
revision? Is it possible to update a Rev 1-2 card to a 3-4 specification ?
Any info regarding channel card revisions would be appreciated.
 Thanks.

Regards,



James Thomson

Magic Audio Co.
The Studio
West Hampstead
London NW2 3RJ
U.K.

Re: [Fairlight-CMI] CMI 11X channel card revisions

2004-01-13 by Tim Curtis

Hi James -

Although I've never messed with this, I would have to speculate that it's not something that could be easily done. The SSM and Curtis chips aren't direct replacements for each other.

Of course, I guess that *anything* is possible...

Tim


James Thomson wrote:
Show quoted textHide quoted text
Hi Guys,


From what I understand the CMI 11X had 4 different revision channel cards
made for it.

Rev 1 Curtis Filter chip

Rev 2 Curtis Filter chip

Rev 3 SSM Filter chip

Rev 4 SSM Filter chip

I would like to hear from other owners what the actual differences are. I
understand that the Rev 3 and 4 cards should sound warmer. Have any of you
noticed this ? I have not actually seen a Rev 4 card,do any of you have this
revision? Is it possible to update a Rev 1-2 card to a 3-4 specification ?
Any info regarding channel card revisions would be appreciated.
Thanks.

Regards,



James Thomson

Magic Audio Co.
The Studio
West Hampstead
London NW2 3RJ
U.K.




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Re: [Fairlight-CMI] CMI 11X channel card revisions

2004-01-13 by James Thomson


Hi Tim,

I am sure some of the guys here would have the skill to update a Rev 1 card to a Rev 4. Is it not simply a case of physically looking at both cards? What rev channel cards are in your CMI 11x ? In the 11X I have setup here I have 2 X rev 3 and 6 X rev 2 cards. I would like to match all my cards with Rev 3\u2019s or 4\u2019s. If anyone wants rev 2 cards I would be willing to trade for rev 3 or 4 channel cards.

Regards,


James Thomson

Magic Audio Co.
The Studio
West Hampstead
London NW2 3RJ
U.K.






On 13/1/04 7:36 pm, "Tim Curtis" wrote:

Show quoted textHide quoted text
Hi James -

Although I've never messed with this, I would have to speculate that it's not something that could be easily done. The SSM and Curtis chips aren't direct replacements for each other.

Of course, I guess that *anything* is possible...

Tim

Re: [Fairlight-CMI] CMI 11X channel card revisions

2004-01-14 by Daniel Walters

James,

I have Rev. 4a cards ( with SSM 2045 chips ) in my IIx. According to the inspection stickers on all the cards, they were installed May 18, 1985.

I don\u2019t have any other info, unfortunately.

Regards,

Daniel



On 1/13/04 11:22 AM, "James Thomson" wrote:

Show quoted textHide quoted text
Hi Guys,


From what I understand the CMI 11X had 4 different revision channel cards
made for it.

Rev 1 Curtis Filter chip

Rev 2 Curtis Filter chip

Rev 3 SSM Filter chip

Rev 4 SSM Filter chip

I would like to hear from other owners what the actual differences are. I
understand that the Rev 3 and 4 cards should sound warmer. Have any of you
noticed this ? I have not actually seen a Rev 4 card,do any of you have this
revision? Is it possible to update a Rev 1-2 card to a 3-4 specification ?
Any info regarding channel card revisions would be appreciated.
Thanks.

Regards,



James Thomson

Magic Audio Co.
The Studio
West Hampstead
London NW2 3RJ
U.K.



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Re: CMI 11X channel card revisions

2004-01-14 by pstnotpd

I do have a mix of channel cards in mine, rev 2/3/4 I believe. 
There are definitely differences in sound and I do believe this can 
screw up the page 7 settings for a sound. For instance CP80 loaded 
straight from disk sounds really weird at first. When I go into page 
7 and fiddle with the filter settings it straightens out. 

I still have 2 'broken' cards lying around, both having trouble with 
1 of the 8 bits being stuck in a state causing weird offsets (I can 
explain how I noticed this but that would take a bit.....) If anybody 
can give any help with how to fix this. We still don't seem to have 
the channel circuit diagrams anywhere.

Cheers,
Patrick

P.S. Still not sure if I can make it to THE meeting. Any news on that 
one?

--- In Fairlight-CMI@yahoogroups.com, Daniel Walters <herrdw@p...> 
wrote:
> James,
> 
> I have Rev. 4a cards ( with SSM 2045 chips ) in my IIx. According 
to the
> inspection stickers on all the cards, they were installed May 18, 
1985.
Show quoted textHide quoted text
> 
> I don¹t have any other info, unfortunately.
> 
> Regards,
> 
> Daniel

Re: [Fairlight-CMI] CMI 11X channel card revisions

2004-01-16 by Tim Curtis

Strangely enough, I've got rev. 2 channel cards in my IIx, which was the 
last IIx that Fairlight built.


Tim



James Thomson wrote:
Show quoted textHide quoted text
>
> Hi Tim,
>
>  I am sure some of the guys here would have the skill to update a Rev 
> 1 card to a Rev 4. Is it not simply a case of physically looking at 
> both cards? What rev channel cards are in your CMI 11x ? In the 11X I 
> have setup here I have 2 X rev 3 and 6 X rev 2 cards. I would like to 
> match all my cards with Rev 3's or 4's. If anyone wants rev 2 cards I 
> would be willing to trade for rev 3 or 4 channel cards.
>
> Regards,
>
>
> James Thomson
>
> Magic Audio Co.
> The Studio
> West Hampstead
> London NW2 3RJ
> U.K.
>
>
>
>
>
>
> On 13/1/04 7:36 pm, "Tim Curtis" <sexsymbol@execpc.com> wrote:
>
>     Hi James -
>
>     Although I've never messed with this, I would have to speculate
>     that it's not something that could be easily done.  The SSM and
>     Curtis chips aren't direct replacements for each other.
>
>     Of course, I guess that *anything* is possible...
>
>     Tim
>
>
>
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