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Old 9th Sep 2017, 6:41 pm   #1
RojDW48
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Default Early Pye stereo RP - model?

Can anyone identify this so I can find a circuit diagram? Collaro single play deck and an ECC83 + 2 X EL84 amp.
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Old 9th Sep 2017, 7:30 pm   #2
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Default Re: Early Pye stereo RP - model?

This is a longshot from me..STP1?

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Old 9th Sep 2017, 7:38 pm   #3
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Default Re: Early Pye stereo RP - model?

Perhaps a Pye STP1, does your machine have an EZ81 rectifier?

http://www.radiomuseum.org/r/pye_stp1.html

Edit: OPPS same info as post 2.

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Old 9th Sep 2017, 9:11 pm   #4
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Default Re: Early Pye stereo RP - model?

Yes it is. It was completed by two open back, wall hung speakers with a curved wood front panel. It sounded very nice in the Lab and even better wth bigger speakers.
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Old 9th Sep 2017, 11:10 pm   #5
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Default Re: Early Pye stereo RP - model?

Faultless as ever gentlemen! Yes EZ81 and I can just make out from the Radiomuseum teaser pic the strangely long chassis. It is showing some signs of life after a period of variac resuscitation but it will be while before it's out of the woods. Whoever designed it must have hated service engineers - it was very awkward to disassemble!
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Old 10th Sep 2017, 7:11 am   #6
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Default Re: Early Pye stereo RP - model?

Does it still have the Ronette Binoflouid one sided cartridge which fitted tightly in the headshell?
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Old 10th Sep 2017, 1:30 pm   #7
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Default Re: Early Pye stereo RP - model?

No - it has been fitted with a BSR SX5H in a curiously bodged arrangement. The headshell was clearly designed for mono use and it has been converted by jamming a bit of metal into where the headshell plugs in to carry the two ground connectors
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Old 10th Sep 2017, 1:57 pm   #8
Edward Huggins
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Default Re: Early Pye stereo RP - model?

This may need re-mounting and aligning. Don't be put off by the "H" suffix on the stereo cartridge. This does not give the kind of high-output you might expect, but is more comparable to a medium-output mono crystal type.
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Old 10th Sep 2017, 2:28 pm   #9
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Default Re: Early Pye stereo RP - model?

Aha - not as much 'H' as in the mono version? That's probably just as well.
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Old 10th Sep 2017, 6:44 pm   #10
Ted Kendall
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Default Re: Early Pye stereo RP - model?

I think the Binofluid was a three-pin job, like the Acos GP71. Groove-mashers, both, but then everybody was feeling their way at the time with stereo pickups.
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Old 10th Sep 2017, 7:02 pm   #11
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Default Re: Early Pye stereo RP - model?

I'm not clued up on this, but I thought the SX5H was basically 2 X5H crystal elements in a single package? Don't think I've ever seen one but have seen SX5M
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Old 10th Sep 2017, 8:16 pm   #12
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Default Re: Early Pye stereo RP - model?

It would be interesting to see a picture of the plug end of the head and the arm socket
to see exactly how Pye made it stereo as I have always wondered(they were using up existing stocks of the Collaro unit) Later models
used a Garrard TA MK2 which had a 3 pin plug in head.
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Old 10th Sep 2017, 9:54 pm   #13
Edward Huggins
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Default Re: Early Pye stereo RP - model?

Quote:
Originally Posted by Clydeuk View Post
I'm not clued up on this, but I thought the SX5H was basically 2 X5H crystal elements in a single package? Don't think I've ever seen one but have seen SX5M
No. It's not as you imply. If that were the case this would be a stereo cartridge giving 1 volt per channel - unheard of in the UK! Don't just take my word for it, search out the spec.
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Old 11th Sep 2017, 2:40 pm   #14
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Default Re: Early Pye stereo RP - model?

Pics for Peter - it does look awfully crude but I guess it does the job. I wonder if it came with a warning to customers to disconnect the 2 earth connectors before pulling off the headshell. I didn't and I got a little surprise! These days I expect we would call it an admirable use of out of date resources - back in the 50s customers might have been a bit cross!
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Old 11th Sep 2017, 4:33 pm   #15
Edward Huggins
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Default Re: Early Pye stereo RP - model?

Noting the useful photos above, the BSR SX5H does not appear to be bridged. Therefore on stereo pressings you will only hear one channel.
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Old 11th Sep 2017, 7:27 pm   #16
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Default Re: Early Pye stereo RP - model?

Hello Roj
The way it was wired originally was with the 2 live connections wired to the pins and the earth wired to the tag on the metal piece on the head and on the arm side the earth to the springy piece of metal. So the head could be removed easily.
Thanks for the pictures.

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Old 11th Sep 2017, 7:41 pm   #17
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Default Re: Early Pye stereo RP - model?

That makes sense, Peter and it's a bit more elegant than what I have here - presumably changed when the Ronette ran out of steam.

Edward, it's a stereo player.
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Old 11th Sep 2017, 7:49 pm   #18
Edward Huggins
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Default Re: Early Pye stereo RP - model?

I certainly know it's stereo, I worked on its design (LOL).....my point was that the BSR stereo cartridge does not appear to have both channels connected.
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Old 11th Sep 2017, 10:56 pm   #19
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Default Re: Early Pye stereo RP - model?

Only because one of them fell off when I extracted the headshell. I wouldn't want to 'bridge' the cartridge for stereo would I?
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Old 12th Sep 2017, 6:48 am   #20
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Default Re: Early Pye stereo RP - model?

I think Edward just made a mistake due to the fact that the arm was bodged.
You could try and put it back to the original wiring.
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