Here are the files for apex fx-12
Attachments
Apex Shunt psu from post#13477.
I’m getting an output 2v lower than the installed zener diodes.
ZD24 = +/-22vdc output
ZD15 = +/-13vdc output
ZD12 = +/-10vdc output
All examples use appropriate transformer CT secondary voltages: 24v, 15v, and 12v.
Dummy load = 100mA
Is there an adjustment to the resistor values needed to get the correct output voltage?
Attachments
WITH 100mA, you can expect 1V drop across output 10R resistors..... still if you don't see any ripple and you can connect to your pre and see.
Yes feeling very nostalgic, this might even be the final amp I build, I liked it then when I built it ages ago..
You never build this one or any lateral mosfet amp.? why?
You never build this one or any lateral mosfet amp.? why?
I haven't build this but i have build lateral amplifiers my friend.
Sorry,i haven't build everything!
Very nice layout, Prasi. It’s a nice amp.
FX-8 was the inspiration for vertical hexFETS FH-9. Lateral FETs are nice from thermal runaway standpoint and considered HiFi, but having built both, I feel hexFETS have more authoritative bass.
FX-8 was the inspiration for vertical hexFETS FH-9. Lateral FETs are nice from thermal runaway standpoint and considered HiFi, but having built both, I feel hexFETS have more authoritative bass.
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Is it 270 mm overall width dimensions of the speaker box without side wall or with side wall?
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I think since it's a single pair output, you would be safe with 35v.
Thanks i'm planning to build it but confused in that area so, confirming overall dimensions H-720mm x B-270mm x D-360
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I have AA9MD running for short periods until rail fuse(s) blows. I can listen to the amp but at around one minute the fuse blows.. same when testing the amp with 1khz sine or square wave , everything looks good for about one minute, then rail fuse blows.. Guessing, but appears to be thermal Runaway.. Any suggestions would be helpful, thanks.. I have feedback jumper installed..