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Old 17th April 2013, 07:31 AM   #241
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good afternoon, Mr.Shaan, lazycat. ssa, VSSA capacitors1uf or 10uF input section? I want to put in bypass use 10uF capacitors size value how? 10uF bypass 0.1 uF ... can not like that on VSSA and amplifier ssa ..
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Old 18th April 2013, 02:25 AM   #242
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Default First of the TO3 PeeCeeBee's

Here's my first two TO3 PeeCeeBee's. Will begin to populate them with parts on hand very soon.
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Old 18th April 2013, 03:01 AM   #243
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Quote:
Originally Posted by sofianirawan View Post
good afternoon, Mr.Shaan, lazycat. ssa, VSSA capacitors1uf or 10uF input section? I want to put in bypass use 10uF capacitors size value how? 10uF bypass 0.1 uF ... can not like that on VSSA and amplifier ssa ..
Hi sofianirawan
Quality 10 uF input DC blocking film capacitor doesn't need to be by passed but if you find it necessary than use 0,1 uF. Same with feedback DC blockin capacitor. Can you show us schematic you're about to build?
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Old 18th April 2013, 03:09 AM   #244
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Quote:
Originally Posted by Paulv View Post
... any comments?
cheers
Paul
No comments.

Seems like you're experienced guy, so just go for it and make it popular wherever you can. Audiophiles with fancy expensive amplification around will be surprised.
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Old 18th April 2013, 03:18 AM   #245
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Quote:
Originally Posted by ALAZ View Post
it is my qustion too and how much watt produced in + -50 volt in 8/4 ohm speker
In theory 130 W/8 Ohm and 260 W/4Ohm, but realistically with one output pair and unregulated linear power supply multiply with factor 0,6.
One output pair should be supplied with +/- 45-50 Vmax, otherwise just prepare some extra spare outputs standing by.
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Old 18th April 2013, 03:26 AM   #246
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Quote:
Originally Posted by jkuetemann View Post
Here's my first two TO3 PeeCeeBee's. Will begin to populate them with parts on hand very soon.
Great job!

I'd love to see working amp and those robust TO-3 animals onboard. Also you'll be the one to have the opportunity to compare it with ALF-s.

Happy assembly.
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Old 18th April 2013, 05:17 AM   #247
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hai lazy ... me and my friend name Mr.naf. VSSA is working peeceebee scheme, layout, and component layout shaan version ...
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Old 18th April 2013, 12:00 PM   #248
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Default And partially stuffed...

Just a shot of a partially stuffed board. This is the proofing, and hopefully not poofing , unit that is essentially my junk box special. If it sings I'll get superior components for the project.
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Old 18th April 2013, 06:54 PM   #249
ALAZ is offline ALAZ  Iran
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hi,LC can i use irfp240/9240 insted 2sk1058/2sj162?
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Old 18th April 2013, 07:48 PM   #250
borys is offline borys  Poland
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Hello
I have made 2 peeceebee boards and have small problem with one channel.
I am getting not symetrical gnd to mosfets gate voltages and offset is growing from 1mV (cold) to 13mV (hot).
Is the vas current ok in my board, leave it as it is?


The other board is fine (bias 110mA, symetrical from in to out all currents, vas is 25mA)

BIG thanks

Sorry forgotten - supply is +-37V
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Last edited by borys; 18th April 2013 at 07:58 PM.
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