...... even Crippled one .......
for you, tomorrow will post picture of it - near Papa's Koan
as is case with all my amps - they're happy together
for you, tomorrow will post picture of it - near Papa's Koan
as is case with all my amps - they're happy together
......
Will it drive an F4?
now I see it's dusting time ...... besides constant need of clearing da mess
Attachments
Looks like all kinds of fun with both the 2SK2087C and the THF-51S.
Papa's Koan looks lonely back there, all dusty and no wire connections.
😉
Papa's Koan looks lonely back there, all dusty and no wire connections.
😉
you can send the Pà amp to me I will cleaning for free 😀Koan did sing several previous days, even so dusty
I think the blue ones come from the same factory as the parts for Japanese bicycle. You know how ZM is about Japanese bikes…
😀
😀
Yes. Assembly of Japanese bicycle requires great peace of mind.
blue plasticky runnin' out, so obtained yellow extrusion
one must be clever, when making own fake caps
one must be clever, when making own fake caps
ZM, assuming that the 2SK2087C does not become available again, what do you see as their differences/advantages over the smaller Sony parts,
be they 2sk60/2sj18 or 2sk82/2sj28?
Thanks for your time.
be they 2sk60/2sj18 or 2sk82/2sj28?
Thanks for your time.
major differences are Ugs value range - much easier construction when you have biasing voltage in range of 2-3V than having it in range of 9-12V (from top of my head, but I believe there it is) as is case with Sony parts
in short - Sony are having at least triple value of Ugs comparing to Tokins, be it big ones or small ones
that is a matter of construction - depending which arrangement you're using for part ( common drain or common source), you must accommodate/arrange modulation of gate thinking of its relation to rails - how much and in which way you need to hop above or bellow rails, and what is resulting behavior of circuit
in short - lesser complications if Ugs range of part is smaller
then - dissipation range - we all know that big Tokins are hard to kill and you can use them as cattle branding head (should I patent that?) , and we can expect that 2SK2087C, being substantially bigger than TO247 ( regular IRFP mosfet) is no Weakling; if IRFP is living happily for many years, sweating under 40W of heat, no reason that 2SK2087C can't endure at least 60 to 70, taking all in account
Keratherm 86/82 sheet, cut in size, Voila!
one of the facts is that I'm lately having Square Law as Fetish, and that calls for parts with proper (big as much is possible) xconductance
Sony parts are having much lesser xconductance than Tokins ...... meaning - more polite sound, in general, but also less detailed and less dynamic
in short - Sony are having at least triple value of Ugs comparing to Tokins, be it big ones or small ones
that is a matter of construction - depending which arrangement you're using for part ( common drain or common source), you must accommodate/arrange modulation of gate thinking of its relation to rails - how much and in which way you need to hop above or bellow rails, and what is resulting behavior of circuit
in short - lesser complications if Ugs range of part is smaller
then - dissipation range - we all know that big Tokins are hard to kill and you can use them as cattle branding head (should I patent that?) , and we can expect that 2SK2087C, being substantially bigger than TO247 ( regular IRFP mosfet) is no Weakling; if IRFP is living happily for many years, sweating under 40W of heat, no reason that 2SK2087C can't endure at least 60 to 70, taking all in account
Keratherm 86/82 sheet, cut in size, Voila!
one of the facts is that I'm lately having Square Law as Fetish, and that calls for parts with proper (big as much is possible) xconductance
Sony parts are having much lesser xconductance than Tokins ...... meaning - more polite sound, in general, but also less detailed and less dynamic
Thank you ZM for that information.
"Sony parts are having much lesser xconductance than Tokins ...... meaning - more polite sound, in general, but also less detailed and less dynamic".
That point seems particularly interesting.
"Sony parts are having much lesser xconductance than Tokins ...... meaning - more polite sound, in general, but also less detailed and less dynamic".
That point seems particularly interesting.
Thanks, I understand, not night and day as much as nuance possibly. (As in buying the girlfriend/wife 8 roses as opposed to 12)
Just turn up the volume. 😊
Listening to my choke loaded follower low transconductance 2SJ28 and it sounds mighty fine.
When it comes to VFETs/SITs, just be happy with what you have, and be happy that you have them.
