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Old 6th July 2009, 01:45 AM   #941
jwb is offline jwb  United States
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They are "clipiola" spiral paper clips. Self-clamping and a pretty good R-theta.
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Old 6th July 2009, 01:49 AM   #942
Salas is online now Salas  Greece
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Very MacGyveristic!
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Old 6th July 2009, 03:21 PM   #943
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Quote:
Originally posted by jwb
I'm getting pretty close to a working project on this preamp. Here's the board under the command of the mighty Atmel STK-500. The software can now change the input, change the coupling, and adjust the volume via my fancy rotary encoder. I still need to write more software to accept remote control commands and to drive the display and scan the front panel buttons.
Just awesome!
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Old 6th July 2009, 03:38 PM   #944
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jwb: Totally, totally !!!

Totally balanced I/O = too:

Got DAC?
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Old 6th July 2009, 07:23 PM   #945
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Click the image to open in full size.

This class A power amplifier with zero negative feedback and 5W output audio power was built based on the schematic of DIY CLASS A 2SK1058 MOS-FET AMPLIFIER project by Mark Houston.

The amplifier uses a custom handmade choke coil.
The power supply uses 4 x 15000 µF Towa capacitors designed for Adcom.
Two large heatsinks and one 88mm fan provide enough cooling to keep the temperature below 60úC.
The amplifier is used with custom made sensitive acoustics.
The sound is very precise and detailed. It has deep sound staging and amazing microdynamics.

For more pictures please visit http://alexkap.com/
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Old 7th July 2009, 05:14 AM   #946
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Alex.

looks great. I really like the case and your wire layout looks quite clean. I actually have a one of these in the works. I'm still finalizing the PS but here's a sneak preview.

Roger
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Old 7th July 2009, 09:38 AM   #947
Progg70 is offline Progg70  Sweden
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Cool Easy to assemble a nice Class-A amp.

Perhaps you think this is advertising but I only want to show how easy
it can be to assemble a nice Class-A, single-end power amplifier.

Visit http://www.youtube.com/watch?v=YxSUXUh0tNU

Regard

Progg70
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Old 7th July 2009, 11:49 AM   #948
tinitus is offline tinitus  Europe
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Yeah, its a nice video
But completely forgot the fun part of drilling holes etc

To me the worst is getting the parts
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Old 9th July 2009, 09:52 PM   #949
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Here is my new microphone array matrix breadboard.
Super quiet PS, gyrator-loaded electret capsules, discrete JFET preamps, optical compressor-limiter with multi-color display, low distortion dual opamp matrix, transformer balanced outputs. Most probably I will give it away through Elektor magazine.

Stay tuned!


http://wavebourn.com/forum/download.php?id=132&f=7

http://wavebourn.com/forum/download.php?id=131&f=7
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Old 9th July 2009, 09:59 PM   #950
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Quote:
Originally posted by Wavebourn
Here is my new microphone array matrix breadboard.
Super quiet PS, gyrator-loaded electret capsules, discrete JFET preamps, optical compressor-limiter with multi-color display, low distortion dual opamp matrix, transformer balanced outputs. Most probably I will give it away through Elektor magazine.

Stay tuned!
That probably deserves its own thread...
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