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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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11th Aug 2022, 3:46 pm | #1 |
Diode
Join Date: Aug 2022
Location: Lille, France.
Posts: 9
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Rogers Master stereo amplifier
Hi there!
I have just registered on your forum which seems very active, because I am looking for information about this amplifier. There is indeed a diagram appeared here, a few years ago but it is unusable because it is illegible! Unable to recognize component values! I wish I could rebuild mine which was extensively modified by the previous owner. So I appeal to your kindness ;°) Cordially, Zannekin |
11th Aug 2022, 8:40 pm | #2 |
Nonode
Join Date: Jun 2014
Location: Bristol, UK.
Posts: 2,074
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Re: Rogers Master stereo amplifier
Welcome - there a few members here who have, or have had the Stereo Master pre-amp - including me. However, I have been unable to source detailed info - and I think that is a common problem.
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11th Aug 2022, 9:34 pm | #3 |
Diode
Join Date: Aug 2022
Location: Lille, France.
Posts: 9
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Re: Rogers Master stereo amplifier
good evening and thank you for your answer but I am looking for the diagram of the amp not the preamp. But I think it will be just as difficult!!!
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12th Aug 2022, 6:25 am | #4 |
Heptode
Join Date: May 2017
Location: Konongo, Ghana
Posts: 506
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Re: Rogers Master stereo amplifier
Attached is the schematic of the preamp (found on ElektroTanya). Couldn't find a good schematic of the amplifier though.
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Robert |
12th Aug 2022, 10:17 am | #5 |
Dekatron
Join Date: Jun 2013
Location: East Sussex, UK.
Posts: 3,308
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Re: Rogers Master stereo amplifier
It might be similar to the RD Junior Circuit. Look for the same valve line up.
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12th Aug 2022, 10:27 am | #6 |
Octode
Join Date: Dec 2018
Location: Llandeilo, West Wales, UK.
Posts: 1,092
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Re: Rogers Master stereo amplifier
Zannekin,
can you post pictures of your 'Master'? Or give a valve line up? There is Master II info in this thread and a diagram at post #16 https://www.vintage-radio.net/forum/...d.php?t=107049 I'm sure it has been discussed on UKVRRR in the more recent past too?
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12th Aug 2022, 1:25 pm | #7 | |
Diode
Join Date: Aug 2022
Location: Lille, France.
Posts: 9
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Re: Rogers Master stereo amplifier
Hi Snoman!!
Quote:
EF86-EF86-ECC82-2xEL34... thank you ;°) Zan |
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12th Aug 2022, 3:03 pm | #8 |
Octode
Join Date: Aug 2008
Location: Rayleigh near Southend-On-Sea, Essex, UK.
Posts: 1,846
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Re: Rogers Master stereo amplifier
Hello,
Have a look at this thread going back to 2013 as there is a circuit in post #11. I’ve attached what I feel to be a better copy in a ZIP file. https://www.vintage-radio.net/forum/...ad.php?t=96012 There is some other info in this thread which may be of use. I have the Stereo Junior with EL84’s. Regards Terry. |
12th Aug 2022, 4:58 pm | #9 | |
Diode
Join Date: Aug 2022
Location: Lille, France.
Posts: 9
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Re: Rogers Master stereo amplifier
Hello Valvepower
Quote:
Still not the right pattern.... The stereo master is pictured on "Audio!audio!" p70 with its preamplifier that I also but emptied and in sad condition ;°(!!! Dramatic.... Other tube amps in your collection? best regards Zannekin |
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13th Aug 2022, 11:53 am | #10 |
Octode
Join Date: Aug 2008
Location: Rayleigh near Southend-On-Sea, Essex, UK.
Posts: 1,846
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Re: Rogers Master stereo amplifier
Hello,
Ooops! Wrong amplifier! Maybe I was thinking about the circuit in the thread ‘Rogers Master II’ in post #6. I have Rogers, Leak, Radford, Quad, Richardson and Armstrong amplifiers and a few other makes in the collection. Terry |
13th Aug 2022, 5:40 pm | #11 |
Diode
Join Date: Aug 2022
Location: Lille, France.
Posts: 9
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Re: Rogers Master stereo amplifier
Hello Terry!
Rogers M-S-A, Leak TL25, Radford STA15, MA25, STA (60, 100?), Quad II, HMV 555, Audio Innovations 200 mkII for the islanders ;°) Zan |
13th Aug 2022, 6:13 pm | #12 |
Diode
Join Date: Aug 2022
Location: Lille, France.
Posts: 9
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Re: Rogers Master stereo amplifier
And RCA LMI 32216, I'm also looking for the schematic.
Zan |
13th Aug 2022, 9:01 pm | #13 |
Octode
Join Date: Aug 2008
Location: Rayleigh near Southend-On-Sea, Essex, UK.
Posts: 1,846
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Re: Rogers Master stereo amplifier
Hi Zan,
Try this link: https://www.lencoheaven.net/forum/in...?topic=30734.0 The attached circuit came from this site. The RCA uses the Jeffery Phase Splitter. See Page 274 onwards in the August issue of Wireless World 1947 https://worldradiohistory.com/UK/Wir...ld-1947-08.pdf Favourite amps are the Leak TL25+, Leak Stereo 20, Radford STA15 and Quad II. Terry |
14th Aug 2022, 10:27 am | #14 |
Diode
Join Date: Aug 2022
Location: Lille, France.
Posts: 9
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Re: Rogers Master stereo amplifier
Hi Terry!
Thanks for the links. Indeed these amps have a certain charm! I found the information concerning the M.S.A. I join them..... Zan |
14th Aug 2022, 10:31 am | #15 |
Diode
Join Date: Aug 2022
Location: Lille, France.
Posts: 9
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Re: Rogers Master stereo amplifier
The quality is degraded....
Certainly much better by Mail. For me it is very readable... |