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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » I got an amp for the home theatre! (Page 2)

 
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Author Topic: I got an amp for the home theatre!
Bruce McGee
Phenomenal Film Handler

Posts: 1776
From: Asheville, NC USA... Nowhere in Particular.
Registered: Aug 1999


 - posted 12-04-2005 09:15 AM      Profile for Bruce McGee   Email Bruce McGee   Send New Private Message       Edit/Delete Post 
I now have a complete manual for this unit. I have it hooked up to a set of Advent speakers. Running non-sync with a cassette deck, it sounds good.

I am going to go through it and resolder board connections. Kintek seems to have been a bit chitzy with the solder in 1987. I cant see any replaced parts on it either.

75 watts per channel. This should be interesting. Sorry you guys dont like it.

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Tom Sauter
Expert Film Handler

Posts: 163
From: Buffalo, NY, USA
Registered: Sep 2000


 - posted 12-04-2005 10:17 AM      Profile for Tom Sauter   Author's Homepage   Email Tom Sauter   Send New Private Message       Edit/Delete Post 
They do sound pretty good, IMO, but the connectors on the backs of the modules weren't durable. Serviced a few where a good whack got the poor solder connections working again, though I know of one where interior started corroding because the theater owner kept his unvented washer/dryer in the booth [Roll Eyes]

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 12-04-2005 10:32 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
quote: Bruce McGee
now have a complete manual for this unit. I have it hooked up to a set of Advent speakers. Running non-sync with a cassette deck, it sounds good.

WOW! As I enter the McGee family "Way Back Machine".... You still have a pair that actually play....... that stiff sure takes me waaaay back to the early 70's! I would have thought that most of the drivers in them have desintegrated by now.

Did Kintek actually use ANY solder at all on them?? Really....?

Mark

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Jack Ondracek
Film God

Posts: 2348
From: Port Orchard, WA, USA
Registered: Oct 2002


 - posted 12-04-2005 11:15 AM      Profile for Jack Ondracek   Author's Homepage   Email Jack Ondracek   Send New Private Message       Edit/Delete Post 
There's not much scarier out there than walking into your booth for the first time and seeing a yellow rack... or were the components yellow?.... BOTH? [Eek!]

4 channels of amp... one worked. We never did plug in the magic pseudo stereo generator... no guts! In any case, the place had an early Ultra Stereo box in it... also fun.

By the time we opened the place up, the rack had a lot less yellow in it.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 12-04-2005 12:08 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
But howdy! Yellow racks in a booth send shivers dowwn my back [uhoh] [uhoh] [uhoh] . Oddly enough.... the Stereophonizer was the one part that actually worked really well and had a fairly complex comb filter arrangment for stripping the audio for the l&r channels. Many are still in use today. They must have used actual real solder on those boards since I've still yet to run into one that didn't work.

Mark

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Louis Bornwasser
Film God

Posts: 4441
From: prospect ky usa
Registered: Mar 2005


 - posted 12-04-2005 02:07 PM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
Mark: you are right about the comb filters. Also, we sold a number of KT-24 which adds surrounds with a noise gate and a filter that "looks" for voice waveforms. In the waning days of mono; this added a lot to certain "mad slasher" movies. (Surround became louder and louder until someone spoke; reality collapsed bck to the screen.)

(I had a full rack of yellow Kintek in my bedroom for a while in the late 70's for evaluation. Sources were TV and AM radio. The traffic copter on am had blades and engine on left channel and voice in center.) Louis

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 12-04-2005 05:02 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
The original KT-21, KT-22 and KT-24s were not bad units and certainly were the best by far in the psudo-stereo class.

The KT-24, as Louis pointed out, is where the dialogue recognition came into play...it was this unit via interconnect cable that allowed dialogue steering.

The KT-21 if used no greater than 20% and often just 10% expansion would really clean up a noisey track without adding any noticable pumping. It was the KT-22...the Stereo-Phoney-Izer that I disliked the most...it was essentially just a set of comb filters to break up the spectrum to the left and right channels to get a wider image.

The KT-24 was the real marvel...its ability to select between music and dialogue was very cool indeed.

The KT-700 series had the essential elements of the originals but I never thought they did as well and their build quality was absolutely horrible.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 12-04-2005 10:24 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
quote: Steve Guttag
It was the KT-22...the Stereo-Phoney-Izer that I disliked the most...it was essentially just a set of comb filters to break up the spectrum to the left and right channels to get a wider image.

I don't think any of us agree that the use of the Stereo Phonyizer is the right thing to do but the Kintek did the best of the units of its time, much better than the USL did, the Kintek did have far more sophisticated comb filters. It definately adds some life to a dull 16mm track.....

As for the Expander/noise reduction unit, I never heard one that would work correctly on any print. There was either some noise or some pumping heard... no happy medium there. Its was based on the DBX system and if the film was not encoded inversly it is something that just cannot work correctly and is completely touch and go throughout any given film alas DBX was an encode/decode system just like Dolby.

Mark

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Phil Hill
I love my cootie bug

Posts: 7595
From: Hollywood, CA USA
Registered: Mar 2000


 - posted 12-04-2005 10:41 PM      Profile for Phil Hill   Email Phil Hill       Edit/Delete Post 
So Bruce, I'm glad you found a manual for your system...I hope it helps since a lot of the posts here are of NO help to you! [Razz]

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 12-05-2005 06:18 AM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
Mark,

The KT-21 was based on the dbx "3BX" that was popular with records. While the KT-21 did have "noise reduction" switches...we only ever used the "3bx Academy" button. at this point...it is a single-ended expander that divided the spectrum into three ranges with different attack and release rates.

If you kept it in the 3BX mode, and kept the expansion under 20% (less than 1.2), then you could successfuly reduce the noise, increase the dynamic range without adding pumping. In fact, the first "yellow box" variety of KT-21s offered up to 50% expansion. Later ones had a silver overlay that reduced the maximum to 30%. By the time the KT-700 came out, you had just a choice of 10 or 20%. For the KT-700...NEVER go beyond 10% or you will hear pumping unless it is a very old track with near zero dynamic range.

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Tom Sauter
Expert Film Handler

Posts: 163
From: Buffalo, NY, USA
Registered: Sep 2000


 - posted 12-05-2005 07:16 AM      Profile for Tom Sauter   Author's Homepage   Email Tom Sauter   Send New Private Message       Edit/Delete Post 
I sorta remember that converting a KT-1003 house to LED with a reverse scan kit was problematic, either there was an impedance mismatch or the processor itself was already DOA. Quite a hair-pulling experience, not exactly the type of unit you could just trace live circuits on.

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 12-05-2005 12:34 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
I also found the 3bx handy also good on magnetic tracks as well

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