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Old 10th April 2009, 11:26 AM   #2451
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nigel, awesome!
Love the color of your chassis....
...and yes it's not the quality of the parts that do the magic!
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Old 10th April 2009, 12:19 PM   #2452
jane is offline jane  Norway
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Default Circlotron mono blocks

Circlotron mono blocks based on 6P45S, ECC99 and 6SL7:
Click the image to open in full size.

Measurements:
o Bandwidth: 10 Hz - 100 kHz (-3dB)
o Max power output: 60 Watt
o Gain: 16V/V, 24dB
o THD (1dB below max Po): 0.1 %
o Output impedance: 0.32 ohm
o Signal/noise: -85dB (ref max Po)

10 kHz square wave response:
Click the image to open in full size.



Jan E Veiset
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Old 10th April 2009, 12:32 PM   #2453
nkg is offline nkg  Australia
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Thanks myster maze
Nigel
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Old 10th April 2009, 02:44 PM   #2454
felixx is offline felixx  Romania
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Again and again ....jane ..."Too much is never enough"?

Some details please?
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Old 10th April 2009, 05:06 PM   #2455
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jane: Nice design, good curves ...

It might be possible to reduce that tiny overshoot @ 10k square wave with a bit more capacitance in the power supply. ... just a thought.
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Old 10th April 2009, 06:48 PM   #2456
JoshK is offline JoshK  Canada
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Jane's designs are always superb!
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Old 14th April 2009, 02:50 PM   #2457
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a guitar amp i built for a friend - a 10W SE High Octane from http://ax84.com/

[IMG]Click the image to open in full size.[/IMG]

more pics:
http://i23.photobucket.com/albums/b3...isbuild036.jpg
http://i23.photobucket.com/albums/b3...build003-1.jpg
http://i23.photobucket.com/albums/b3...isbuild005.jpg
http://i23.photobucket.com/albums/b3...ki13/006-2.jpg

- DIY aluminum chassis and boards.
- variable cathode bias pot with RCAs for the test points.
- paralleled octal tube socket to roll a variety of PTs other than the EL84.
- DC supply for filaments and LEDs. i intentionally dimmed the pot LEDs compared to the Standby and Power LEDs so that my friend can decide how bright he wants them.

my friend runs a CNC machine at a cabinet/mill and will be enclosing it in a proper cab made out of birds eye maple and sapele, with an acrylic window to show off the blue tubes. i think we're going to name it "SaFire".
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Old 14th April 2009, 03:00 PM   #2458
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Old 15th April 2009, 05:31 AM   #2459
aroS3 is offline aroS3  Greece
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Quote:
Originally posted by myster_maze

Why don't you also post your own amps photos George ?
Regards
George
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Old 15th April 2009, 10:38 PM   #2460
AKN is offline AKN  Sweden
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Jane,

Magnificent!

As usual, I might add.
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