Colin Wonfor

[Colin Wonfor]

Originally Posted by david counter

I still find it odd that he posts pictures but doesn't get involved with the forum

oh well he must have his reasons

I do, I am just recovering from a major heart operation and this was quickly followed by a stroke. But as you asked so nicely here is a little list of thing I have done, oh the bunnies, I like them and they are never rude but eat cable like grass, and I am glad you noticed them.

In order:-
Pushpull 1 Germanium Amp 1971
V1 Tube amp 1972
12W Single Ended A Class 1974
MIH 100W 1975
MIH 400W
ProAc stereo 100w 1980
ProAc 3 Channel 100W
Magnum A100, 400W 1982
Magnum A200
Magnum Pre-amps
All Magnum work was based on my designs I left with my ex director Tony Relph,
Inca Tech Sabre iss 1 1983
Inca Tech Prelude
Inca Tech Claymore 1 1983
Inca Tech Claymore Gold
Inca Tech Claymore S
Inca Tech Claymore 2
Inca Tech FMT Tuner
Inca Tech IT50,IT100,IT200
Inca Tech IT1P preamp
Inca Tech Sabre iss 2
Inca Tech Dirk
Inca Design ID25,ID50,ID75
Inca Tech MSB (a monster)
Inca Design Oberon Classic
Inca Design Oberon (standard)
Lescon
Oxford Acoustic's "Mystic"
TOCA SECA 20W,50W,100W,200W,300W single ended class A,s 1995
TOCA I75
TOCA Pre A
TOCA 75W
Tellurium Q Cables 2009
Tellurium Q, A Class 20W, 100W 2011
Tellurium Q Headphone/Phono Amp
Tellurium Q Pre-Amp

Products worked on Naim Nait 5i, other bits also for Naim and Cambridge Audio. 2008- 2010

There is a few other but who cares now.
OK happy now.

[Richard]

Hi Colin and welcome
Thanks for the intro and we wish you a speedy recovery!
I've moved this thread over to the Coffee Bar (or tea if you prefer - it's only virtual I'm afraid ) and hope you'll feel able to chat as and when you feel well enough.
It would be good to hear some tales and I wonder if you've had any interest in valves over the years?
Cheers,
Rich

[Colin Wonfor]

Originally Posted by Richard

Hi Colin and welcome
Thanks for the intro and we wish you a speedy recovery!
I've moved this thread over to the Coffee Bar (or tea if you prefer - it's only virtual I'm afraid ) and hope you'll feel able to chat as and when you feel well enough.
It would be good to hear some tales and I wonder if you've had any interest in valves over the years?
Cheers,
Rich

Hi Richard,
I like the huge 250TH made by Eital McCullouch , I used then to power a laser, then I built with the 2 spare ones a SECA tube amp the heater voltage was 5V @ 20Amps just a mind blowing sound.
Best Col

[pre65]

Originally Posted by Colin Wonfor

Hi Richard,
I like the huge 250TH made by Eital McCullouch , I used then to power a laser, then I built with the 2 spare ones a SECA tube amp the heater voltage was 5V @ 20Amps just a mind blowing sound.
Best Col

5V @ 10A ?

Yes, there is something special about transmitter valves.

The 833a I use have 10V @ 10A filaments.

[Colin Wonfor]

Originally Posted by pre65

5V @ 10A ?

Yes, there is something special about transmitter valves.

The 833a I use have 10V @ 10A filaments.

I think it the way the high voltage crackles down ones arm when you get it wrong. Yep 10A I used two. And that wonderful blue arc better than any blue LED as you strike the anode with a grounded screw driver, with the lovely aroma of ozone, better than any coffee smell mmm pure engineering heaven.

[colin.hepburn]

A Ha that magic smoke effect again know it well

[Richard]

Originally Posted by Colin Wonfor

I think it the way the high voltage crackles down ones arm when you get it wrong. Yep 10A I used two. And that wonderful blue arc better than any blue LED as you strike the anode with a grounded screw driver, with the lovely aroma of ozone, better than any coffee smell mmm pure engineering heaven.

Ha ha, can't say I've experienced any of that Colin! Did you build any valve amps you liked? What valves and topology? Or did you move on to solid state before plating yourself proper?

[Colin Wonfor]

Originally Posted by Richard

Ha ha, can't say I've experienced any of that Colin! Did you build any valve amps you liked? What valves and topology? Or did you move on to solid state before plating yourself proper?

The only Valve amps I made are now longer with us, the first two are under Southend Pier feeding the fishes.
My Granddad taught me valves with mains energized loud speakers, then Dad taught me Transistors , Germanium I still have my first GET1 Dad bought for 10 Shillings , that was lot of money for a man with 7 kids in 1963 ish.
Then I became a chemist, electronic was a hobby, until a minor explosion, gave me second thoughts so I did a later degree in Electrical Engineering, and at 50 I did a BA in computer science, but I still suffer from word blindness, so none of these exams helped.(back to the Beano)
The best Valve Amp I did had a PL84 a single device with a ECC83 input stage transformer coupled and was about 6W and Mono, with a Garrad deck, I bought from Kelly,s Radio in Romford. I think the cartridge was a ceramic type.
Granddad showed me how to wind my own transformers, I still do today.
Most of my electronic design life has been in power stuff and audio was for fun, but is soon took over, thank god.

And you how did you get into this mess.

[colin.hepburn]

Hi Colin W
That’s interesting when you say you suffer from word blindness as that make two of us Dyslexia is a right pain when it come to trying to explain something on here at times I can find it very difficult some time but I think the main backbone of the members on here are aware of my problem and do their best to help thumbs up for that chaps

But the advantages of having Dyslexia is I have a very good ability to remember what someone may have said 20/30 plus years ago

[Colin Wonfor]

Originally Posted by colin.hepburn

Hi Colin W
That’s interesting when you say you suffer from word blindness as that make two of us Dyslexia is a right pain when it come to trying to explain something on here at times I can find it very difficult some time but I think the main backbone of the members on here are aware of my problem and do their best to help thumbs up for that chaps

But the advantages of having Dyslexia is I have a very good ability to remember what someone may have said 20/30 plus years ago

Dyslexia: that the word, I often spell it with a "z" so I give up.
I have managed to write a few thing for Wireless World and a few very long papers on noise and a few patents, what a nightmare. If I want to do it quickly is all goes ****.
I also leave words out, of sentences and "s" of words, thank goodness for spell checkers.