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F5 made by a complete dummy
F5 made by a complete dummy
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Old 10th October 2019, 08:10 AM   #12
Zen Mod is online now Zen Mod  Serbia
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F5 made by a complete dummy
mains NTC needs something more substantial than that sort of plastic connection block, and preferably , more elevation from base plate
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Old 10th October 2019, 08:55 AM   #13
tooppy is offline tooppy  France
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Quote:
Originally Posted by Zen Mod View Post
mains NTC needs something more substantial than that sort of plastic connection block, and preferably , more elevation from base plate
Interesting, you have a reference in mind ?
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Old 10th October 2019, 09:01 AM   #14
indra1 is offline indra1  Indonesia
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NTC is hot on usage, attach to something that does not melt when heated. A bakelite or ceramic block is safer.
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Old 10th October 2019, 12:38 PM   #15
Zen Mod is online now Zen Mod  Serbia
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Interesting, you have a reference in mind ?
post 1127 and post 1140 in Babelfish M25, SissySIT - general building tips and tricks

small pcb , easy to make even with exacto knife and concrete hammer

Click the image to open in full size.
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Old 10th October 2019, 10:30 PM   #16
codyt is offline codyt  United States
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Congrats! I’ll soon be tackling my first amp build too, and there’s lots of good info here - thanks!! Do you recall the chassis and depth option you purchased? Would you recommend it to someone else tackling an F5?
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Old 11th October 2019, 05:44 AM   #17
tooppy is offline tooppy  France
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Originally Posted by codyt View Post
Congrats! Iíll soon be tackling my first amp build too, and thereís lots of good info here - thanks!! Do you recall the chassis and depth option you purchased? Would you recommend it to someone else tackling an F5?
It is the deluxe 4. If you notice I place the transfo flat you can gain space if you have a braket to place it vertical.
This chassis fit perfectly , don't forget you need space to work. Moreover every hole is made ready.⅝
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Old 11th October 2019, 07:11 AM   #18
kbergsson is offline kbergsson  Iceland
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Quote:
Originally Posted by Zen Mod View Post
post 1127 and post 1140 in Babelfish M25, SissySIT - general building tips and tricks

small pcb , easy to make even with exacto knife and concrete hammer

Click the image to open in full size.
Hi ZM are you only using 2 caps per channel in the powersupply. Does that give clean enough/ripplefree DC?
Hope you understand my primitive sketch

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=
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--------------- gnd
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=
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--------------- -
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Old 11th October 2019, 09:02 AM   #19
Zen Mod is online now Zen Mod  Serbia
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F5 made by a complete dummy
this time yes, no CRC , just C

but these are gorilla Philips 68mF/25V caps

they even have this written on them : "Ieff. (20KHz) 50A (70C)"

go figure

no buzz no hum no nothing

ok , music is there .......
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Old 11th October 2019, 10:05 AM   #20
kbergsson is offline kbergsson  Iceland
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Need to finish my Sissy SIT and am short of funds for the moment. I have some Kemet 47.000uf, 63v, PEH200MO5470MU2 caps and some 50uF Ducati caps. The big kemets are a challenge space vise for double mono in same kabinett (8 large Kemets take up a lot of space). I have used them in my M2 and the sound is good.
I dont have any powersupply sim software, would it be worth while to use either the Kemets as C, Kemets[C] and Ducati[c] as Cc or even CRc?

@Tooppy great F5 buld, sorry for sabotaging your thread.

Last edited by kbergsson; 11th October 2019 at 10:28 AM.
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