https://golbornevintageradio.co.uk/forum/ Mon, 26 Oct 2026 22:57:29 +0000 MyBB https://golbornevintageradio.co.uk/forum/showthread.php?tid=9718 Mon, 14 Sep 2026 19:04:06 +0000 peter scott]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9718 This is a pre-stereo Hi Fi speaker although some have used two in stereo.

Read what Hi Fi News said about it in 1957: https://www.radiomuseum.org/forum/pm6_re..._id=591530

and another article: https://www.itishifi.com/archives//2013/...1950s.html

I have owned it for about 60 years and in that time the foam cone suspension and spider disintegrated but it is now fitted with modern speaker cone suspension and spider.

I think it's in pretty good condition.

As a piece of Hi Fi history I would like £200 for it.


  Front.jpg (Size: 137.79 KB / Downloads: 19)

  Back & Sides.jpg (Size: 240.62 KB / Downloads: 19)

  Lowther.jpg (Size: 507.52 KB / Downloads: 19) ]]> This is a pre-stereo Hi Fi speaker although some have used two in stereo.

Read what Hi Fi News said about it in 1957: https://www.radiomuseum.org/forum/pm6_re..._id=591530

and another article: https://www.itishifi.com/archives//2013/...1950s.html

I have owned it for about 60 years and in that time the foam cone suspension and spider disintegrated but it is now fitted with modern speaker cone suspension and spider.

I think it's in pretty good condition.

As a piece of Hi Fi history I would like £200 for it.


  Front.jpg (Size: 137.79 KB / Downloads: 19)

  Back & Sides.jpg (Size: 240.62 KB / Downloads: 19)

  Lowther.jpg (Size: 507.52 KB / Downloads: 19) ]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9704 Sat, 05 Sep 2026 10:40:32 +0000 catch29]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9704 ]]> ]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9667 Wed, 01 Jul 2026 18:23:08 +0000 Danndad]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9667
Dandad.]]>
Dandad.]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9651 Fri, 29 May 2026 13:42:30 +0000 catch29]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9651 I've done the useual, out of spec cap's, tested the valves and found a bad ecl86, cleaned the valve base's.
Couldn't find any criteria for the ecc807's so couldn't test (wonder why?). So put all back together and so far sounding sweet.
I tried to find more info on the ecc807's then I found out what you all know!!.
Assuming I'm going to keep the little jezebel and thinking if a 807 goes down, are there instructins as to converting
to take ecc83's?. I know it's not straight forward but she is a nice amp.]]> I've done the useual, out of spec cap's, tested the valves and found a bad ecl86, cleaned the valve base's.
Couldn't find any criteria for the ecc807's so couldn't test (wonder why?). So put all back together and so far sounding sweet.
I tried to find more info on the ecc807's then I found out what you all know!!.
Assuming I'm going to keep the little jezebel and thinking if a 807 goes down, are there instructins as to converting
to take ecc83's?. I know it's not straight forward but she is a nice amp.]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9643 Sun, 10 May 2026 11:06:28 +0000 ppppenguin]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9643
We all know "His Master's Voice" and I've seen "Le voix de son maitre" on French HMV discs. I've never seen the Spanish version before. "La voz de su amo". My wife, who knows some Spanish, assures me that this reads as it seems: "The voice of his friend". A cultural difference between countries in how the relationship between man and dog is seen.

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We all know "His Master's Voice" and I've seen "Le voix de son maitre" on French HMV discs. I've never seen the Spanish version before. "La voz de su amo". My wife, who knows some Spanish, assures me that this reads as it seems: "The voice of his friend". A cultural difference between countries in how the relationship between man and dog is seen.

  hmv_spanish_resized.jpg (Size: 51.34 KB / Downloads: 12)

  hmv_spanish.jpg (Size: 233.54 KB / Downloads: 12) ]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9535 Sun, 23 Nov 2025 22:10:15 +0000 gary_crutchley]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9535  
I have a Technics stack system which I think dates to the late 1980s, the twin tape deck unit is a RS-X101. Both decks work but recently the left hand one started making a clicking noise which online information appears to suggest is due to a drive gear cog losing some of its teeth. I understand this issue is seen in a number of Technics tape units of this age.
 
I know that replacement gears are available, however, I am wondering if anyone has experience with replacing them, and therefore how difficult a task this is please?
 
Thanks in advance.]]>  
I have a Technics stack system which I think dates to the late 1980s, the twin tape deck unit is a RS-X101. Both decks work but recently the left hand one started making a clicking noise which online information appears to suggest is due to a drive gear cog losing some of its teeth. I understand this issue is seen in a number of Technics tape units of this age.
 
I know that replacement gears are available, however, I am wondering if anyone has experience with replacing them, and therefore how difficult a task this is please?
 
Thanks in advance.]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9532 Wed, 19 Nov 2025 11:37:43 +0000 JCB]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9532 Does anybody know the release dates for these two models?]]> Does anybody know the release dates for these two models?]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9531 Sun, 16 Nov 2025 12:38:27 +0000 boater sam]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9531 My hand tools, cutters, pliers, nut runners etc. were on wall racks.
Now here is a word of caution for anyone else doing this.

Thinking I was being clever I bought several magnetic racks from Lidl on the premise that normal slotted and holed racks never would give me the multiple positions required for the wide size and shape of the tools.

Now I have a full set of tools that have become magnetised and are unsuitable for any work on tape recorders.
Silly me.

Sam.]]> My hand tools, cutters, pliers, nut runners etc. were on wall racks.
Now here is a word of caution for anyone else doing this.

Thinking I was being clever I bought several magnetic racks from Lidl on the premise that normal slotted and holed racks never would give me the multiple positions required for the wide size and shape of the tools.

Now I have a full set of tools that have become magnetised and are unsuitable for any work on tape recorders.
Silly me.

Sam.]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9513 Sun, 19 Oct 2025 11:44:24 +0000 JCB]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9513 I have a Sanyo G-2615N briefcase style music centre that needs some attention to the record player, I have noticed that it is not playing at the right speeds according to the dial. On opening it up I have found the motor is quite loose, is it supposed to have rubber mountings? If so does anybody know if these are still available or can be replaced with anything similar.]]> I have a Sanyo G-2615N briefcase style music centre that needs some attention to the record player, I have noticed that it is not playing at the right speeds according to the dial. On opening it up I have found the motor is quite loose, is it supposed to have rubber mountings? If so does anybody know if these are still available or can be replaced with anything similar.]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9481 Fri, 08 Aug 2025 16:47:43 +0000 ppppenguin]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9481
The SRP31 data is in R&TVS 1959-60. A pair of ECL83 pentodes in push-pull with the triodes acting as pre-amp and phase splitter. A note in R&TVS 1961-62 says the SRP31C adds a facility to connect and external amp for stereo which I can also see on my SRP31D. The Radiomuseum site says that the SRP31D uses a pair of ECL86. I can't see the SRP31D data in R&TVS or Trader but guess that the circuit is very similar but beefed up for the extra power. I hope that the ECL86s are OK as they're a bit scarce and expensive these days. The get-out is a pair of PCL86 (I have several NOS) and a small heater transformer.

Does this model have an electrostatic tweeter which I guess is unlikely to work any more?

I haven't touched a gram like this in many years so any helpful hints please. The amp looks easy enough. Bring it up on a lamp limiter and change the coupling caps to the output stage regardless. Buzz test at the input.]]>
The SRP31 data is in R&TVS 1959-60. A pair of ECL83 pentodes in push-pull with the triodes acting as pre-amp and phase splitter. A note in R&TVS 1961-62 says the SRP31C adds a facility to connect and external amp for stereo which I can also see on my SRP31D. The Radiomuseum site says that the SRP31D uses a pair of ECL86. I can't see the SRP31D data in R&TVS or Trader but guess that the circuit is very similar but beefed up for the extra power. I hope that the ECL86s are OK as they're a bit scarce and expensive these days. The get-out is a pair of PCL86 (I have several NOS) and a small heater transformer.

Does this model have an electrostatic tweeter which I guess is unlikely to work any more?

I haven't touched a gram like this in many years so any helpful hints please. The amp looks easy enough. Bring it up on a lamp limiter and change the coupling caps to the output stage regardless. Buzz test at the input.]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9473 Mon, 28 Jul 2025 13:06:11 +0000 Mike Watterson]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9473 https://transdiffusion.org/2025/07/28/be...he-avatar/

Maybe 1958]]> https://transdiffusion.org/2025/07/28/be...he-avatar/

Maybe 1958]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9442 Mon, 28 Apr 2025 14:29:52 +0000 ppppenguin]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9442
There's a review here, in Tape Recording magazine: https://www.worldradiohistory.com/UK/Tap...968-11.pdf (pp34-38, internal pages 474-477) which places it slightly earlier than I thought.

Apparently OTTO stands for "orthophonic transistorised technical operation"

Does anyone know anything about this unit?

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  sanyo1.resized.jpg (Size: 25.92 KB / Downloads: 18) ]]>
There's a review here, in Tape Recording magazine: https://www.worldradiohistory.com/UK/Tap...968-11.pdf (pp34-38, internal pages 474-477) which places it slightly earlier than I thought.

Apparently OTTO stands for "orthophonic transistorised technical operation"

Does anyone know anything about this unit?

  sanyo3.resized.jpg (Size: 72 KB / Downloads: 18)

  sanyo2.resized.jpg (Size: 60.86 KB / Downloads: 18)

  sanyo1.resized.jpg (Size: 25.92 KB / Downloads: 18) ]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9437 Fri, 18 Apr 2025 16:35:59 +0000 catch29]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9437 I have taken the power pcb out and removed all the cap's. The electrolytics are not original (the amp is about 65 years old) made by D.C.C., they are all out of spec by about 40%!. I have taken the lower value 'Hunts' out and a few 'Dublilier', again all out 40/50%.
I will be replacing these with the 'cheapo' black and white & red one's available on mass from Ebay etc. This may horrify the purists but I have always used these and they 'sound' fine (this is the 6th S-99 I have done).
I have generally ignored resistors unless they show signs of heat damage and rarely had to open up again to replace one. However with the pcb out, this time I have measured all the resistors with the following results=
Of the 32 on the board excluding the wire wound which are all good, 13 are within 20%, 10 20-30%, 5 30-40% and 4 way out.
I don't want to 'poke' this board about too much because it's old and I worry about lifting tracks etc. I will replace the one's 40%plus
but what about the others?.
The pre-amp board will be next, that looks a mess, the big plessy cap has split in two!.
An interesting observation is the big 60+75uf cap from the tranny, the previous owner replaced it with a 75+100+100, so he must of, some how wired the 100's in series? but I can't see how he could of done it from the same pot. ( I can't check how he wired it as I've ripped it all out with the power board).
I have a S-99 in daily use for the last couple of years, never replaced a resistor just all the cap's and it sounds a treat!.]]> I have taken the power pcb out and removed all the cap's. The electrolytics are not original (the amp is about 65 years old) made by D.C.C., they are all out of spec by about 40%!. I have taken the lower value 'Hunts' out and a few 'Dublilier', again all out 40/50%.
I will be replacing these with the 'cheapo' black and white & red one's available on mass from Ebay etc. This may horrify the purists but I have always used these and they 'sound' fine (this is the 6th S-99 I have done).
I have generally ignored resistors unless they show signs of heat damage and rarely had to open up again to replace one. However with the pcb out, this time I have measured all the resistors with the following results=
Of the 32 on the board excluding the wire wound which are all good, 13 are within 20%, 10 20-30%, 5 30-40% and 4 way out.
I don't want to 'poke' this board about too much because it's old and I worry about lifting tracks etc. I will replace the one's 40%plus
but what about the others?.
The pre-amp board will be next, that looks a mess, the big plessy cap has split in two!.
An interesting observation is the big 60+75uf cap from the tranny, the previous owner replaced it with a 75+100+100, so he must of, some how wired the 100's in series? but I can't see how he could of done it from the same pot. ( I can't check how he wired it as I've ripped it all out with the power board).
I have a S-99 in daily use for the last couple of years, never replaced a resistor just all the cap's and it sounds a treat!.]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9431 Sat, 05 Apr 2025 21:56:27 +0000 DrStrangelove]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9431
I suppose I'll have to get a round tuit.

But first I'll have to find the Powertran build instructions that are "here somewhere or other" in one or other of the piles of paper.

It's not the one in the Powertran case but a second one that I built in a RS case with very large heatsinks on the back.

Ho hum.

The last time it went wrong it was the curse of the Red Tants (100uF 10V gone open) after which it went downhill rapidly with the wind behind it.]]>
I suppose I'll have to get a round tuit.

But first I'll have to find the Powertran build instructions that are "here somewhere or other" in one or other of the piles of paper.

It's not the one in the Powertran case but a second one that I built in a RS case with very large heatsinks on the back.

Ho hum.

The last time it went wrong it was the curse of the Red Tants (100uF 10V gone open) after which it went downhill rapidly with the wind behind it.]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9374 Tue, 10 Dec 2024 04:48:50 +0000 boater sam]]> https://golbornevintageradio.co.uk/forum/showthread.php?tid=9374
The take down has been pilloried on the web.
 
The owner of the £25,000 high end preamp, for which some very wild makers claims are made,  was aware of some ripple in the output. 
The maker, Tom Evans, either refused to repair, was unable to repair or the damage the unit sustained in the post made it unrepairable in his view.

So it was sent to Mark with the challenge that he would not be able to repair it.  Wrong, Mark fixed it, without any help, wrote up his own reverse engineering hand book and uploaded the repair to his website.

The video was soon taken down.

For those still interested the original video is available here,   https://archive.org/details/the-gbp-25-0...bp-fsfzi-i
 It is a cracking video, well worth watching and passing on to others.

Posted out of interest, no connection with Mark, Tom Evans or anyone else on You Tube.

Released here in the interes of fair play.
 Sam.]]>
The take down has been pilloried on the web.
 
The owner of the £25,000 high end preamp, for which some very wild makers claims are made,  was aware of some ripple in the output. 
The maker, Tom Evans, either refused to repair, was unable to repair or the damage the unit sustained in the post made it unrepairable in his view.

So it was sent to Mark with the challenge that he would not be able to repair it.  Wrong, Mark fixed it, without any help, wrote up his own reverse engineering hand book and uploaded the repair to his website.

The video was soon taken down.

For those still interested the original video is available here,   https://archive.org/details/the-gbp-25-0...bp-fsfzi-i
 It is a cracking video, well worth watching and passing on to others.

Posted out of interest, no connection with Mark, Tom Evans or anyone else on You Tube.

Released here in the interes of fair play.
 Sam.]]>