This is topic Converting Kinoton FP-20 RSSD to DP-70 in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.


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Posted by Robert Minichino (Member # 3495) on 07-28-2008, 12:20 PM:
 
We have a pair of the Kinoton RSSD reverse-scan sound readers for the FP-20 style projectors, and I'd rather have them on our DP-70s, but they don't fit.

Looking at photos it seems the only obvious difference between the Kinoton DP-70 reader and the FP-20 reader is the machined base. If this is the case then switching the rest of the hardware around should be trivial.

Does anyone know if this is possible and if Kinoton (or anyone else) sells just the base for the DP-70? If they don't sell it, I suppose it wouldn't be too difficult to make one.

If not I'll just do the BACP conversion on the DP-70s and get a Dolby or BACP penthouse for SR-D. It'd just be a shame to have these sitting around on the spare projectors.
 

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Posted by Steve Guttag (Member # 268) on 07-28-2008, 02:22 PM:
 
It isn't just the base but that is certainly part of it. It is actually an Upside-Down reader. The flywheel is also different on the DP70 version. The DP70 version has an extra damper arm as well.

In fact, the story goes that Kinoton was shamed into making the DP70 reader after someone else took a conventional reader and flipped it upside down and made it fit the DP70.

DP70 reader:



FP20/30 reader:


 

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Posted by Robert Minichino (Member # 3495) on 07-28-2008, 02:59 PM:
 
I believe it; I've seen a photo of a prototype DP-70 reader that looks exactly like an upside-down FP reader on a mounting plate with the bottom-right corner missing. I might just try this on my own. Now where did I put that bandsaw....

BTW, I don't see another damper arm on the production unit photo.
 

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Posted by Steve Guttag (Member # 268) on 07-28-2008, 03:30 PM:
 
The little roller just below the drum is on a damped arm. Then again, they might have changed it since I put one in.

Steve
 

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Posted by Robert Minichino (Member # 3495) on 07-28-2008, 04:36 PM:
 
That's interesting. I think I'll live dangerously and give it a go anyway. I should be able to reverse any modifications I make if I want to use it for the FP-20s again.
 

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Posted by Gerard Bierling (Member # 4900) on 07-31-2008, 07:13 AM:
 
Hello all
I am new to this forum but I have visited it for many years.
I have been a cinematech for The Wolff Cinema Group in Utrecht, The Netherlands and retired since 1-1-2000
This thread brought me to register to be able to show you some pictures of the FP 20/30 reverse-scan for the DP 70.
I made 5 of them in 1999.
You can see, it is hardly impossible to use them again on a FP 20/30







Greetings,

Gerard
 

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Posted by Robert Minichino (Member # 3495) on 07-31-2008, 08:24 AM:
 
Wow, that's very helpful. Thank you for posting those pictures.
 

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Posted by Tim Asten (Member # 4051) on 07-31-2008, 05:57 PM:
 
Nice pics. I was watching a video on You Tube of an FP20 with what looked like the original analogue sound reader with some differences - although it was hard to tell as the video was a bit blurry.(Search for 'Virgin Liverpool' on You Tube). The narrator said it was Dolby Digital but non reverse scan. The only Kinotons I've worked on are the FP40's, so my knowledge of the FP20 is limited, but I wasn't aware that Kinoton made a SR-D reader other than the reverse scan one

Tim.
 

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Posted by Robert Minichino (Member # 3495) on 07-31-2008, 06:15 PM:
 
Hi, Tim. I haven't seen anything like that FP-20 reader in that video; it looks like the old incandescent reader with the SR-D CCD assembly tacked on above the exciter lamp housing.
 

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Posted by Stephen Furley (Member # 1277) on 08-01-2008, 01:39 AM:
 

quote:

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I wasn't aware that Kinoton made a SR-D reader other than the reverse scan one [Confused]

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I've never seen such a thing, but they do make an analogue red light conversion for the original sound head; there's a pdf of it here

Maybe it was one o these, and the narrator was simply incorrect about it being digital.
 

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Posted by Max Biela (Member # 1919) on 08-01-2008, 02:29 AM:
 
No, that is the original Kinoton SR*D add-on which was mounted on the top of the regular FP20/FP30 soundhead. Parts were the same as in the Cat 700 (no LEDs!).
 

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Posted by John Wilson (Member # 269) on 08-01-2008, 03:11 AM:
 
Hi Gerald

Thanks for the pics...well done and welcome to Film-Tech. Please post again soon.

John
 

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Posted by Emiel De Jong (Member # 4225) on 08-05-2008, 01:22 AM:
 
One of those 5 DP70's in action:

http://www.youtube.com/watch?v=B_J79i3OR-8

It's a relatively long video, but it was a historical moment for us . We plan to have this one ready later this summer for a backgarden show of Krakatoa...
 

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Posted by Ben Wales (Member # 92) on 08-05-2008, 04:54 PM:
 

quote: Emiel De Jong

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It's a relatively long video, but it was a historical moment for us . We plan to have this one ready later this summer for a backgarden show of Krakatoa...

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