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View Full Version : Trio / Kenwood Supreme 20 Cartridge - 1969(-ish)



The Grand Wazoo
03-09-2013, 20:25
For quite a while, I've had a mild inquisitive interest in the Supreme series that Kenwood made at the back end of a long time ago. The units they produced incorporated quite a few interesting ideas and concepts and this one, I thought, must have been rather unusual for the time.

http://imageshack.us/a/img833/8356/btk4.jpg

As far as I can tell, the cantilever had a pair of screens mounted in a 'V' formation on it and upon these were a pair of photo-electric cells. Also within the headshell were a pair of lamps which shone through a slit and the screens and then onto the cells. As the stylus tracked the groove, the cantilever moved the screen and caused variations in the pattern of light falling onto the cells. Part of the system was a power supply for the bulbs and the unit also had the ability to amplify the cartridge output to line level. There was a balance control round the back & a bypass switch on the front which allowed another conventional cartridge to be connected. The cartridge was mounted into an integral headshell unit and was quite heavy, often needing a beefy counterweight.
I understand that it was made for Trio by Ikeda and that it cost a rather lively £78 (inc. tax) in 1969, which relates to something like £1088 nowadays.

I wonder if anyone has ever seen or heard one of these rare beasts, and if so, what did you think of it?

Rare Bird
03-09-2013, 20:39
Supreme 1 amp/s is a bonza..

The Grand Wazoo
03-09-2013, 20:40
Yeah, built in active crossover....fab!

Rare Bird
03-09-2013, 20:44
The 'MX1000' was a good multi channel amp from around the same time :eyebrows:

& of course one of my fave Idler/Belt decks the 'PC400'

The Grand Wazoo
03-09-2013, 20:49
So do you know anything about the dustbin-on-a-stick then, Andre?

Rare Bird
03-09-2013, 21:34
Never had one although i did try for a S20 on auction last year. im not sure but i think Adam has one!

Beobloke
06-09-2013, 07:46
Nope, not guilty!

Never seen the Trio items but I do have a Toshiba SR-510C that originally came with an Electret Condenser cartridge and has the preamp for it built into the deck. Sadly the cartridge was long gone by the time I bought it and I've never found one for sale.

Toshiba also did a photoelectric cartridge on their SR-50 turntable. http://www.vinylengine.com/library/aurex-toshiba/sr-50.shtml. One of these did pop up on ebay a year or so back but I was outbid...

The Grand Wazoo
06-09-2013, 08:01
Ah, right thanks that's interesting. I found an old HFN review of the Trio and it referred to another Japanese company doing something with photo electric cells - it sounds like it could have been Toshiba then.
I also read that Decca may have intervened and put a stop to the Trio because of an existing patent that they held.

Barry
06-09-2013, 16:41
I believe Sony made a photoelectric cartridge back in the early '70s. It had a spherical-shaped body; so could be called a "beachball on a stick"!

I saw one in a hi-fi shop in Munich, back in 1972. It was fitted to an SME 3009, mounted on a Thorens TD125 turntable.


Update
Having just visited the vinylengine cartridge web-site http://www.vinylengine.com/turntable_forum/viewtopic.php?p=27847 , I think the cartridge I saw in Munich was made by Toshiba and not Sony as I stated.

Rare Bird
06-09-2013, 19:06
Nope, not guilty!

Never seen the Trio items but I do have a Toshiba SR-510C that originally came with an Electret Condenser cartridge and has the preamp for it built into the deck. Sadly the cartridge was long gone by the time I bought it and I've never found one for sale.

Toshiba also did a photoelectric cartridge on their SR-50 turntable.

Sorry Adam i remembered you having something like..

Rare Bird
07-09-2013, 12:50
If anyone sees a Trio 'PU400' TT please let me know.. They may not look much to some but the construction quality is on par with a 'TD124'

istari_knight
04-11-2013, 14:59
Useless on its own [I think?] but nevertheless... http://www.ebay.co.uk/itm/Vintage-Rare-1969-Kenwood-Trio-Photoelectric-Cartridge-Preamplifier-Supreme-20-/291009641750?pt=UK_Sound_Vision_Vintage_Separates&hash=item43c186bd16

Rare Bird
04-11-2013, 16:02
Shame about the nibbled facia :(

The Grand Wazoo
04-11-2013, 18:55
Interesting James, thanks for pointing it out.

istari_knight
04-11-2013, 20:03
I see it sold rather quickly... Anyone here ?

reddish75
05-11-2013, 22:40
Bloke on audiokarma bought it, I think he has a complete set of all supreme components now, the rest of his collection of vintage jap stuff is the best I've ever seen in this country.