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Old 13th October 2004, 04:12 PM   #121
Netlist is offline Netlist  Belgium
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Default Re: 1st Volunteer

Quote:
Originally posted by EUVL
Now the rest (supply of transformers and quote for prices) is up to Susan. : )
Something for the Group Buys forum.

/Hugo
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Old 13th October 2004, 04:28 PM   #122
johnnyx is offline johnnyx  United Kingdom
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I have a transformer from an old radio, which had a better sound than most at the time. I have it on my bench with a pair of 1W MOSFETs, VN10 series. I was about to try a circuit like the old germanium ones but using MOSFETs, when Susan posted her design. I had even bought a Visaton FRS 8 speaker to try with the old circuit. I have a 20W transformer kit that i've used, but I could rewind it. Not sure about the quality of laminations though. The input transformer is the problem.

It will not be a fair comparison to use crappy transformers in her circuit, so sound quality issues will have to wait until someone has worthy transformers to build it with. It would still be fun to try it though.
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Old 13th October 2004, 04:43 PM   #123
Tyimo is offline Tyimo  Hungary
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Default Vbias circuit

Hello Susan!
Congratulate for your new and "mind refreshment" design!
At the same time I would like to please you to post here a whole, detailed schematic with the bias circuit and PSU, if it is possible. I am affraid that I didn't understand the "Vbias" 100%. I am an amateur...

Thanks and best regards:

Tyimo
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Old 13th October 2004, 05:24 PM   #124
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Wellll...
Lots of interest from all of you.

So now it is up to Susan?? You must be kidding!

Susan gave you a design, she arranged for a company to provide the output transformer kits, she gave you the type number of the input transformer at Sowter, and all you do is look at each other and wait for, for what? Place your orders!

Jan Didden
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Old 13th October 2004, 05:35 PM   #125
PMA is offline PMA  Europe
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Jan,

suppose you'll be first in the row
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Old 13th October 2004, 06:01 PM   #126
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Quote:
Originally posted by PMA
Jan,

suppose you'll be first in the row

I would, IF I had said I would be interested to built one, which I didn't.

Jan Didden

/Do what you say, say what you do....
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Old 13th October 2004, 07:13 PM   #127
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I tried a 800VA tranny in the output section of my Circlotron-amp yesterday,it is not the same thing, but it worked very good.
My little 14 watt solidstate circlo made my girlfriend quite angry driving 2 10 inch CervinVega carwoofers with Infected Mushroms.The load whas 1.5 to 2 ohms.
it was only an experment with trannies.
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Old 13th October 2004, 07:59 PM   #128
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Quote:
http://www.susan-parker.co.uk/susan-speaker-sphere.htm

and I designed these because I wasn't happy with the sound of my LS3/5As (or the alternatives).

Hi Susan,

Those look exactly like the Audiophonics CA50. The question I have is...did they copy them from your design or was Audiophonics your company? Or were you the design consultant maybe?

Cheers,
Bas
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Old 13th October 2004, 08:09 PM   #129
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My source : Audiophile december 1993.
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File Type: jpg ca50.jpg (40.2 KB, 1382 views)
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Old 13th October 2004, 08:51 PM   #130
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To Bas Horneman : Maybe here work some subconscinous, 'cos Susan like official machinery - this shape is well known state stamp .
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