Post your Solid State pics here

thanks ,fotios.
Which is finally the circuit that you are using in this prototype from the lot of versions presented

I replaced all the old schema's with ones that say "update"
It is final, works bery good . No noise, no "thump"
and is VERY loud.
(slew at 40v/us, but no 5v input)

frugal 2 will be done soon, with 100+ v/uS or better.
(balanced diff. VAS)
OS
 
(slew at 40v/us, but no 5v input)[/B]

OS sorry for my mistake, but i am under moderation and i can't edit my posts:
"Without load, with a square wave of 5Vpp in input, how much is the output rise time in 10KHz and in 20KHz?"
I meant: Without load, with a square wave of 10KHz and 20KHz in input, how much is the corresponding rise time in output at 5Vpp?
Of course 5V it is very high for input! :D
From the slew you reffer you must have about 1,6 to 1,7 ìsec rise time. The same i have and me in my amplifier.
Indeed, with double LTPs in input you must have the half rise time (thus the double slew rate).

Regs
Fotios
 
Luxman M-05

:)
 

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You have to use one Image Editor program.
To make them less than 1000x1000 pixels and less than 100 kB file size .


I use XnView freeware. Has got Image Resize function.
http://pagesperso-orange.fr/pierre.g/xnview/endownloadwin32.html

And when I save JPG image I can select reduced quality of the copy saved:
... from 0% - 100% JPG image quality.
Usually 60-70% quality gives a small enough file. Compressed in format.
 

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In use:

That's Marcus Miller and Eric Clapton's jazz band, Live at Montreux 1987 (a great album).

The Grandfather's old windup Edison, left. The Amp drives two Magnapan MG-1.6, signal conditioned by Bottlehead tube pre-amp ... Yes, I did straighten the picture after this was taken.
 

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www.hifisonix.com
Joined 2003
Paid Member
Very nice FastEddy. Those Aussie amp modules sure look good I must say.

Tip: Use a big washer or better still for DIY a piece of PCB between your mosfets and the wing nuts or mounting screw. This will spread the force on the package and prevent die crack inside the package.

I know well of what I speak - you would never guess the number of customer complaints I've seen because of cracked power device due due to excessive mounting torque or lack of a spreader of some sort .
 
Axial: Roderstein KP1832. 0.43uF 200V polypropylene

RIFA: PHE 351 HE 715 250V
I found a whole bunch of these 1.5uF caps at an old PCB.
They look quality. But I am not sure what they are.
The value of 1.5uF would be good for some amplifier input.

Match: Swedish Safety Match for making fire.
First invented in 1844 by one of our swedish inventors.
Safety matches

180px-Matches.jpg

Household safety matches, including one burnt match

The safety match was invented in 1844 by the swedish Gustaf Erik Pasch (1788-1862) and was improved by Johan Edvard Lundström (1815-1888).
Johan Edvard and his younger brother Carl Frans Lundström (1823-1917) started a large scale match industry in Jönköping (Sweden) around 1847, but the improved safety match was not introduced until around 1850-55.
In 1858 their company produced around 12 million match boxes.
 

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