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Old 19th September 2009, 03:35 PM   #1031
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Default Very cheap amp

Class-B amp, 15W for single-driver loudspeaker.
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Old 19th September 2009, 03:57 PM   #1032
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heatsink big enough
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Old 19th September 2009, 05:58 PM   #1033
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Quote:
heatsink big enough ?
Kip , for a sealed plexiglass enclosure , that is about right for 2 X 15w class B. BtW , real cool, exbrayat...

Some of us excessive fanatics , with the kilowatt amps, need heatsinks big enough to cool off ovens !! (attachment) That one is 2 X 21" X 7" X 4 "

It really is better to have too much than too little (Gm doubling / shorter component life).
OS
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Old 19th September 2009, 08:55 PM   #1034
farjon is offline farjon  Brazil
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Default My first DIY amplifier

An DX Amp mounted on a wood board. Better enclosure next time...

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Old 20th September 2009, 05:56 PM   #1035
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Quote:
Originally Posted by kipman725 View Post
heatsink big enough
It seems enough. The plexy plates are disjointed and permit air cooling in the amp. And 15W is a little power in class-B...
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Old 20th September 2009, 08:23 PM   #1036
fotios is offline fotios  Greece
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Default I like slim line!

Pictures of the revised amplifier Charisma 0K6 (see in post 713 the initial design and why the revision). I must point out that everything in this project it is designed, constructed and machined in my home with my hands except the heatsinks and the transformer.
IT IS AN ABSOLUTE DIY PROJECT.

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Regs
Fotios
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Last edited by fotios; 20th September 2009 at 08:33 PM.
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Old 20th September 2009, 08:32 PM   #1037
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VERY hot fotios!!
Extremely well done!

!!!!
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Old 20th September 2009, 09:06 PM   #1038
fotios is offline fotios  Greece
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Thanks John
Indeed, i have spent 6 months to finish it.
I am really very satisfied and not because the success of project. I am very satisfied because i have not paid neiter one Euro, be it so counterfeit, to any VAMPIRE machinist, pcb constructor or graphic artist!
That is the real pleasure!

Regs
Fotios
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Old 20th September 2009, 10:16 PM   #1039
tinitus is online now tinitus  Europe
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Quote:
Originally Posted by fotios View Post
Pictures of the revised amplifier [B]
.
IT IS AN ABSOLUTE DIY PROJECT.

Regs
Fotios
Well, looks better than most commercial amps
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Old 21st September 2009, 01:01 AM   #1040
T in AZ is offline T in AZ  United States
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Fotios Excellent! The real beauty, is in the details, Good One! How long did it take?
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