Post your Solid State pics here.

[syn08]

Details here.

[PMA]

My amplifiers -

[osscar]

Nice minimalistic design.

[Declan Smith]

Is that Phase Linear 700B?
Do you have the schematics diagram ?

[jacco vermeulen]

Sounds like someone has been sniffing Bobby Carver's underwear again.
Try the search button for fossil schematics, dude.

[The Saint]

Hi Guys

Here is my latest amp module hot off the press.





A variant of my nxV200 with the power MOSFETs mounted underneath the main PCB and some improvements to the main circuitry.

[Wavebourn]

Originally posted by Wavebourn
Testing it now, on the picture. All LEDs are bright that means heavy compression, but the sound is still CLEAN! I AM YELLING IN MICROPHONE ARRAY! YAHOOO!!! No clipping at all, but sensitivity is great on 3 feet distance!
What is interesting, a stereobase is wider than in reality. Sensitivity of rear capsules need to be adjusted.

http://wavebourn.com/forum/download.php?id=134&f=7

If you want to hear this microphone through my tube amps and my line array speakers, here is the file from Russian bard festival where I am singing. The record was made by camera so everything is heard, including power generator in the forest. Sometimes when I yell aloud you can see LEDs flashing (in front of the red box on the stage) that means an optical compressor is compressing wildly to avoid clipping.
WARNING! The file is 60 megabytes in size!
http://wavebourn.com/music/alisovski...stival2009.mpg

[shaan]

left- Death of Zen Preamp+PMA Mosfet power follower.

right- Death of Zen Power amp.

[FastEddy]

Re: Death of Zen pre-amp and amp combo:

Wondering if that extra capacitor in the signal chain between the two modules is necessary?

[shaan]

Originally posted by FastEddy
Re: Death of Zen pre-amp and amp combo:

Wondering if that extra capacitor in the signal chain between the two modules is necessary?

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The circuit on the left has the death of zen preamp and all of the Pavel Macura's MOSFET power follower EXCEPT the MOSFET and the NPN Darlington. You can see the 18volt(blue) and 3.3volt(orange) zenners which are parts of the power follower.
I'm gonna drive this from a 50V supply and unfortunately the retailer didnt have a 1.5ohm/10watt resistor so I chose a 2.2ohm and a 4.7ohm resistor in parallel(resulting in a resistance of about 1.49ohm)

The follower is direct driven by the preamp through a 270ohm resistor(the 1watt resistor near the blue zenner), so i think it is direct coupled.

The BIG orange capacitor is the output coupler and is in parallel with a 10uF thing behind it.
I used the polyester(green) capacitor in supply only.





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/shaan hates everything in the signal path, even a resistor.