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citation 12 mos fet
citation 12 mos fet
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Old 9th August 2016, 11:16 AM   #101
kramskee is offline kramskee  South Africa
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Hi Kannan please PM me your adress and I'll find out for you

thanks
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Old 10th August 2016, 01:10 PM   #102
Junm is offline Junm  Philippines
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Quote:
Originally Posted by kramskee View Post
Thanks Schubert, just found the facebook page too! .............

Junm boards are $6 for a single channel set

so if you're making stereo amps, $12 gets you 2 driver PCB's and 2 Output PCB's ......... PCB's will be FR4 1.6uM solder masked and component side silk screened for easy component placement. I decided on single sided PCB's since this makes it easier to repair and make any changes or modifications

Prices exclude shipping, I'm forced to use a courier service since our postal system here is unreliable at best
how much shipping cost to the Philippines?
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Old 10th August 2016, 01:41 PM   #103
kramskee is offline kramskee  South Africa
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I will let you know

thanks
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Old 10th August 2016, 10:04 PM   #104
schubert is offline schubert  United States
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I had Jerry, the fellow who gave me the Citations, over for a listen today, and he confirmed the superiority of the lateral mosfet version - for those of you who might be interested. He was actually surprised to hear a difference at all, but he was unequivocal about his preference for the lateral version.
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Old 8th September 2016, 09:10 AM   #105
kramskee is offline kramskee  South Africa
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Hi Everyone,

I have finally received stock of my production run of PCB's for my version of the mosfet 12. For those of you that are interested please PM me with your exact address and I'll let you know how much shipping will be to your location, unfortunately it is country specific.

Junm if you're still interested please PM me your address
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Old 12th September 2016, 08:06 PM   #106
Bangla H is offline Bangla H  Germany
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I like the real classic Amp back in live.
Very nice DIY work.

I have send PM.

Really nice restoration Job Schubert.
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Old 21st October 2016, 09:59 PM   #107
Nelson Pass is offline Nelson Pass  United States
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citation 12 mos fet
Quote:
Originally Posted by schubert View Post
The 240/9240 version went together like a dream and worked perfectly right off....It's not an M2 or F6 - a little aggressive in the upper midrange (strings), but it has better bass (well, more bass anyway) and more grace under pressure than either.
...
Sound-wise, the lateral version is more even and preferable to the vertical mosfet version. Still not an M2 or F6, but mighty fine.
Depending on whose 9240's you were using, some or all of that could easily
be the "P channel problem" of the IRFs in which the tansconductance
shelves down a few dB from the midrange up and creates distortion.
This is usually dealt with by balanced operation and/or more feedback.

This is why you see the Fairchild parts in the M2.
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Old 21st October 2016, 11:38 PM   #108
schubert is offline schubert  United States
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Quote:
Originally Posted by Nelson Pass View Post
Depending on whose 9240's you were using, some or all of that could easily
be the "P channel problem" of the IRFs in which the tansconductance
shelves down a few dB from the midrange up and creates distortion.
This is usually dealt with by balanced operation and/or more feedback.

This is why you see the Fairchild parts in the M2.
They were Vishay parts in my amp (complementary version). I used the same parts in my M2.
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Old 21st October 2016, 11:41 PM   #109
2 picoDumbs is offline 2 picoDumbs  Australia
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Can someone characterise the vishay parts for capacitance.
I could probably do it I just need to know the correct procedure with the instrumentation I have access to.

PS. My guess is they are identical to IR parts but that could be wrong.
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Old 21st October 2016, 11:46 PM   #110
2 picoDumbs is offline 2 picoDumbs  Australia
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Quote:
Originally Posted by schubert View Post
I had Jerry, the fellow who gave me the Citations, over for a listen today, and he confirmed the superiority of the lateral mosfet version - for those of you who might be interested. He was actually surprised to hear a difference at all, but he was unequivocal about his preference for the lateral version.
Yeah that is my intent, but I will be going quasi and probably go with the double die laterals.
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