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Babelfish M25, SissySIT - general building tips and tricks
Babelfish M25, SissySIT - general building tips and tricks
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Old 9th October 2019, 07:35 AM   #1241
Zen Mod is offline Zen Mod  Serbia
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Babelfish M25, SissySIT - general building tips and tricks
few things - don't waste your time with WCF; I made it as option , but consensus by now is that is too much of good thing ...... interesting for Babelfish M25 , simply because of inherently much lower THD than SissySIT , so adding some sugar can be good in some circumstances

while with SissySIT , in most cases it is too much

regarding F4 - as I'm always saying - there is no comparison between amps really ...... but comparison of some other amp vs. preamp driving a F4 ...... simply because F4 is always just forwarding preamp's character , nothing more

and yes - that NP of yours ......... my Pa is eating him for breakfast , every day

NP is fun , as I heard , but Pa is much funnier



edit: luckily we had few more eyes and brains , to help with your adventure ; mine would suffice eventually , but it was faster with help of Greedy Boyz

and ....... don't waste your time with serious listening ...... just enjoy ; I know that you must (and you will ) realize the same , but now you made one of the best small amps money can buy ..... either commercially done or as DIY
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Last edited by Zen Mod; 9th October 2019 at 07:42 AM.
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Old 9th October 2019, 12:04 PM   #1242
ItsAllInMyHead is offline ItsAllInMyHead  United States
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Originally Posted by cal3713 View Post
Screws are in and music is on in the big system.
Congratulations!
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Old 9th October 2019, 05:17 PM   #1243
cal3713 is offline cal3713
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Quote:
Originally Posted by Zen Mod View Post
few things - don't waste your time with WCF; I made it as option , but consensus by now is that is too much of good thing ...... interesting for Babelfish M25 , simply because of inherently much lower THD than SissySIT , so adding some sugar can be good in some circumstances

while with SissySIT , in most cases it is too much

regarding F4 - as I'm always saying - there is no comparison between amps really ...... but comparison of some other amp vs. preamp driving a F4 ...... simply because F4 is always just forwarding preamp's character , nothing more

and yes - that NP of yours ......... my Pa is eating him for breakfast , every day

NP is fun , as I heard , but Pa is much funnier



edit: luckily we had few more eyes and brains , to help with your adventure ; mine would suffice eventually , but it was faster with help of Greedy Boyz

and ....... don't waste your time with serious listening ...... just enjoy ; I know that you must (and you will ) realize the same , but now you made one of the best small amps money can buy ..... either commercially done or as DIY
As always, thanks for the input.

I feel really privileged to have mono-block F4s & SissySITS both just hanging out ready to make beautiful music. Plenty of frustration in the build process, but also lots of enjoyment and learning. And I don't need a large amp, so I'll just consider that I have two of the best available...
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Old 10th October 2019, 06:07 PM   #1244
sontero is offline sontero  Italy
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Quote:
Originally Posted by cal3713 View Post
As always, thanks for the input.

I feel really privileged to have mono-block F4s & SissySITS both just hanging out ready to make beautiful music. Plenty of frustration in the build process, but also lots of enjoyment and learning. And I don't need a large amp, so I'll just consider that I have two of the best available...
you have one....best: SissySit
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Old 18th October 2019, 09:59 PM   #1245
asanden is offline asanden  Netherlands
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Hi, finally some time to make an attempt to get the sissysit up.
Pcb’s are done, cinemag HQ trafo
Will re-use my two identical M2 amps as dual channel mounted monoblocks, M2 and sissysit per chassis. I shall power one channel per chassis.

Sissy question...
I have 4 Harris p9240 unused; in the M2 it was advised to use them, got them from Teabag, but I used Toshiba’s, so 4 left over, could use 2 of them.
Would they improve the amp, and if so; need to be measured for Vgs?
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Old 18th October 2019, 10:22 PM   #1246
Zen Mod is offline Zen Mod  Serbia
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Babelfish M25, SissySIT - general building tips and tricks
o yeah , Harris welcomed

no need for any measurements ...... at least that was my experience with P Harris - they were all well more than 4V of Ugs , for I/V area of interest
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clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
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Old 18th October 2019, 10:47 PM   #1247
asanden is offline asanden  Netherlands
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Thx, will do that
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Old 23rd October 2019, 11:41 AM   #1248
BRN is offline BRN  United States
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Babelfish M25, SissySIT - general building tips and tricks
I have a couple of 20v 400va transformers and wanted to know if I could use them with a CRC power supply in the SissySIT? Not sure if it would be to much voltage.
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Old 23rd October 2019, 12:05 PM   #1249
Zen Mod is offline Zen Mod  Serbia
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Babelfish M25, SissySIT - general building tips and tricks
it'll work for sure , if you have proper set of SITs , measured at 24V/2A , with Ugs no more than 3V7 , when hot

possibility of slight increase of R in CRC , vs. my fave value of 0R1

say two paralleled WW of 0R47 , which will give you 0R235 , then you're shooting for 420mV across , when setting Iq (1A8)


if you abandon idea of using these, from any reason , feel free to send them to OPLDF
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clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
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Old 23rd October 2019, 03:33 PM   #1250
Ylab is offline Ylab
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Am I the only one here waiting for the cinemag transformers to arrive?! Paid for 2 months ago and no news since ! Board are fully stuffed and waiting patiently..
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