Telefunken S82 amplifier - UK Vintage Radio Repair and Restoration Discussion Forum

bobhowe · 19th Dec 2010, 9:50 pm

Hi are these amps any good. What would be an average price to pay for one thanks

qualityten · 20th Dec 2010, 4:00 pm

Good for what purpose? They are very low powered, but collectible so will cost more for that reason. Uses ECL82 valves which I think are nice sounding.

Needs some mods for hifi use. See http://www.tube-classics.de/TC/Germa...%20S81/S81.htm

Tim · 4th Dec 2018, 10:14 pm

https://www.vintage-radio.net/forum/...ad.php?t=63121

(Closed, but maybe the mods will resurrect it ;-) )

I have just been given one of these to look at by a customer. Quite distinctive looking, and there seem to be a surprising number of them on the web.
As said by others, not the loudest amp on the planet, but I think it's probably loud enough for the average room.
The owner has had it for a number of years and acquired it fitted into an even older radiogram(now long departed).

Nuvistor · 4th Dec 2018, 11:12 pm

Feed it with a medium output cartridge and into efficient speakers and it will be more than load enough.

Marconi_MPT4 · 7th Dec 2018, 2:53 pm

These are interesting amplifiers possibly because they were designed for the purpose of upgrading older equipment for stereo.

However, here is a curiosity, these amplifiers feed the ECL82 pentode section with a high pass filter with -3dB point set roughly at 800Hz while the low frequency for each channel is summed and output via a three pin din socket.

Schematic here https://www.vintage-radio.net/forum/...30&postcount=6

Some overall negative feedback is applied but on their own only reproduce from mid frequencies upwards.

Cheers
Rich

Herald1360 · 8th Dec 2018, 12:14 pm

So best way to use it would be to connect it to two small speakers placed either side of your old record player, then connect the upgrade stereo cartridge to the S82 inputs and take its filtered bass output to the input of the record player amp. Great fun with lots of knobs to twiddle to set it up to sound how you like. Turn up/down the S82 to adjust treble and the record player to adjust bass.

Not so different from modern mini audio systems with two tiddly left and right speakers and a so-called subwoofer (usually a one note boombox) that you hide round the back. I've got a computer speaker one connected to the telly- sounds better than the telly on its own but really awful on Classic FM female announcers' speech for some reason.

Reelman · 8th Dec 2018, 12:40 pm

These amps were sold off cheaply in the 60s through adverts in Practical Wireless which might account for the fair few that seem available but not for the daft prices they command now!
Peter

19th Dec 2010, 9:50 pm	#1
bobhowe Heptode Join Date: Jun 2005 Location: Sunderland, Tyne and Wear, UK. Posts: 661	Telefunken S82 amplifier Hi are these amps any good. What would be an average price to pay for one thanks

20th Dec 2010, 4:00 pm	#2
qualityten Octode Join Date: Feb 2009 Location: Wallasey, UK. Posts: 1,314	Re: Telefunken S82 Stereo Valve Amp Good for what purpose? They are very low powered, but collectible so will cost more for that reason. Uses ECL82 valves which I think are nice sounding. Needs some mods for hifi use. See http://www.tube-classics.de/TC/Germa...%20S81/S81.htm

4th Dec 2018, 10:14 pm	#3
Tim Dekatron Join Date: Jan 2003 Location: Bradford on Avon, Wiltshire, UK. Posts: 3,310	Telefunken S82 amp https://www.vintage-radio.net/forum/...ad.php?t=63121 (Closed, but maybe the mods will resurrect it ;-) ) I have just been given one of these to look at by a customer. Quite distinctive looking, and there seem to be a surprising number of them on the web. As said by others, not the loudest amp on the planet, but I think it's probably loud enough for the average room. The owner has had it for a number of years and acquired it fitted into an even older radiogram(now long departed). __________________ "Nothing is as dangerous as being too modern;one is apt to grow old fashioned quite suddenly."

4th Dec 2018, 11:12 pm	#4
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,433	Re: Telefunken S82 amp Feed it with a medium output cartridge and into efficient speakers and it will be more than load enough. __________________ Frank

7th Dec 2018, 2:53 pm	#5
Marconi_MPT4 Heptode Join Date: Mar 2011 Location: Dorset, UK. Posts: 522	Re: Telefunken S82 amp These are interesting amplifiers possibly because they were designed for the purpose of upgrading older equipment for stereo. However, here is a curiosity, these amplifiers feed the ECL82 pentode section with a high pass filter with -3dB point set roughly at 800Hz while the low frequency for each channel is summed and output via a three pin din socket. Schematic here https://www.vintage-radio.net/forum/...30&postcount=6 Some overall negative feedback is applied but on their own only reproduce from mid frequencies upwards. Cheers Rich __________________ To an optimist a glass is half full; a pessimist half empty; an engineer twice as big as need be!

8th Dec 2018, 12:14 pm	#6
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,536	Re: Telefunken S82 amplifier So best way to use it would be to connect it to two small speakers placed either side of your old record player, then connect the upgrade stereo cartridge to the S82 inputs and take its filtered bass output to the input of the record player amp. Great fun with lots of knobs to twiddle to set it up to sound how you like. Turn up/down the S82 to adjust treble and the record player to adjust bass. Not so different from modern mini audio systems with two tiddly left and right speakers and a so-called subwoofer (usually a one note boombox) that you hide round the back. I've got a computer speaker one connected to the telly- sounds better than the telly on its own but really awful on Classic FM female announcers' speech for some reason. __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

8th Dec 2018, 12:40 pm	#7
Reelman Octode Join Date: Aug 2008 Location: Rotherham, South Yorkshire, UK. Posts: 1,724	Re: Telefunken S82 amplifier These amps were sold off cheaply in the 60s through adverts in Practical Wireless which might account for the fair few that seem available but not for the daft prices they command now! Peter