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Crown 970 Tape Speed Adjustment


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#1 alfie

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Posted 04 April 2015 - 09:20 PM

Hey Guys,

Does anyone know how to adjust the tape speed on a crown csc 970 if it's playing too fast? Belt size isn't the issue btw.

Any help would be greatly appreciated!!!!!!

#2 JVC Floyd

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Posted 04 April 2015 - 10:42 PM

is there a hole on the motor to adjust the speed?.



#3 alfie

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Posted 04 April 2015 - 11:13 PM

Had a look but couldn't see one......

#4 Michiel

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Posted 05 April 2015 - 06:03 AM

I didn't find a way to adjust the tape speed in neither of my crowns. Got the 950, 850 and 980. Crowns are low end boxes I guess. Maybe you can replace the motor for an adjustable one?

#5 alfie

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Posted 05 April 2015 - 05:18 PM

Thanks Michiel, sounds like a lot of work.
Surely there must be a way to adjust the speed.....?

#6 toshik

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Posted 05 April 2015 - 05:26 PM

If I remember correctly pre-1980 motors had electro-mechanical regulator with torque levels-centrifugal switches combination. They were factory-adjusted and then sealed inside the double motor cases.

Later ones got a normal motor regulator with pot hole.



#7 Nickeccles

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Posted 15 March 2017 - 02:01 PM

All these Crowns have a speed adjustment under a white sticker on the underside (take the front off any of these & you will see it) they are so easy to adjust!! My 850, 950 & 960 all have this type of motor

They are electronicly controlled by a servo circuit inside the motor like almost all 80's decks........

 

 

Here are the 950 & 960 inside - there is a small hole under the white sticker & the electronic pot to adjust the speed is accessible through the hole :-)

 

The 850 has a different deck but the same motor..........hope this helps!!

 

Even though the 970 has a soft touch deck, the same applies to adjust the speed!

 

 

Attached File  Crown CSC 950L Radio Recorder Restored - 16 January 2016 (3).jpg   100.05K   2 downloadsAttached File  Crown CSC-960L Radio Recorder - January 2017 (37).jpg   139.36K   2 downloads



#8 Rimmer36

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Posted 22 May 2017 - 01:50 AM

nice one Nick :yes: