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Some cards, like the Cat. 22, is a cinema card (used in the 364, CP-50, CP-100 and CP-200) but also pro-sound card.

You could make your own list by just going through each processor beginning with the 364 and E2 combination, working your way to the CP-100, then the CP-50, move on to the CP-200, the CP-55, CP-65, CP-500, CP-45, CP-650. Then you have all of the add on items like the remotes, Digital adapters, surround adapters...etc.

Good luck,

Steve

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You could make your own list by just going through each processor beginning with the 364 and E2 combination, working your way to the CP-100, then the CP-50, move on to the CP-200, the CP-55, CP-65, CP-500, CP-45, CP-650. Then you have all of the add on items like the remotes, Digital adapters, surround adapters...etc.

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It isn't easy, The Dolby site has info on current products only, and only complete processors amd adapters, not the actual cards. Some of the cards, such as the Cat 22, 222, 64, 150 280 etc. I know, but others I have no idea. The Dolby manuals on the Film-Tech site have some info, but not everything. Suppliers of second-hand equipment often list cards they have available, but only by Cat number. There are many that I have never heard of, and there are often several revisions of a card available, again with no indication of what the differences are. I was hoping here would be a definitive list on line somewhere.

I would say the best (inforned) person would be Dion Hanson (former Dolby UK) and may well put in touch with some one for the cat 93 cards.

I belive he has a web site under his company name called Cineman, there was a advert in last years Cinema Technology.

For what it's worth, I own a Cat. 93 (12KHz switch card for 35mm 4-track magnetic).

I believe Dolby still has one in stock and it wasn't too pricey. Dolby seems to be revamping their pricing based on current manufacturing costs and desired mark ups. I doubt that when the last Cat. 93 is sold they will make anymore. Personally, I have found the Cat. 93's filter for killing the 12KHz tone to be not good enough...I could CLEARLY hear it still.

Steve

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"Old projectionists never die, they just changeover!"

While I was over in Freeport, I noticed a number of the CP-45 units were in "Bypass" mode. It turns out that one of the projectionists must've switched them over by accident (or out of total ignorance) because nothing was wrong with any of them.

However, in my search for "something wrong" I went looking for the little fuse on the 511 (?) board....Despite the fact that they all had the little Ziploc baggie with the spare fuses inside, none of the boards in these particular units had a space for such a fuse!

What gives?

Are there various manifestations of the Cat. 511 board?

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Frank

One problem I have, is that I never know which cards I might need to know about in the future, a few days ago I wouldn't have thought I needed to know about the Cat 93 surround switch module for the mag pre amp unit, now I need to find one of these.

For instance...if you posed the question of wanting to run 35mm 4-track magnetic films with your Dolby CP-200 processor, "what do I need?" That question would eventually get you to the Cat. 93.

Try to always state the equipment you have though. For instance, if you posed the same question but had a Dolby CP-65 or CP-500 or an Ultra, Smart or Panastereo brand processor. The suggestion may not even include the Dolby preamp and Cat. 93 switch card. The are other obsolete 35mm magnetic stuff like the SMART SMP-430 or the rather new Panastereo CSP-4600 that may suite your needs better and is readily available.

Steve

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I have found the Cat. 93's filter for killing the 12KHz tone to be not good enough...I could CLEARLY hear it still.

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Acording to the short section on the Cat 93 in the MPU-1 manual, the low pass filter should pass the signal up to 8kHz. It doesn't say how sharply it should cut above that, but it shouldn't be difficult to get enough dBs down at 12 kHz that you couldn't hear the tone. If you can hear it, there would seem to be three possible explanations:

1. Your Cat 93 is faulty. Have you heard another one?

2. The Cat 93 is badly designed.

3. The film had a tone on it at the wrong frequency. Hove you heard it with more than one film.

Do you know which of these is the case? Or is it something else, which I haven't thought of?

Unfortunately, I'd say it just isn't the best of designed cards. Also, most surround arrays back then were simple 8" speakers with less than steller response. On a modern system that will be flat out to 20KHz, it will be much more apparant. I have heard at least 3 Cat. 93s running different films and I have always noted and was botherd by the 12KHz tone. It is substantially reduced but not enough for me.

Now another person in the room when I remarked on the tone said he couldn't hear it (he was a bit older than I...still is).

One thing the Panastereo CSP-4600 has in it is a notch filter plus a user selectable 8KHz low-pass filter to kill it off.

Steve