100W Ultimate Fidelity Amplifier

Attachments

  • AX-11 component guide.pdf
    AX-11 component guide.pdf
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  • AX-11 silkscreen.pdf
    AX-11 silkscreen.pdf
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  • AX-11 toner copper.pdf
    AX-11 toner copper.pdf
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  • AX-11.jpg
    AX-11.jpg
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  • AX-11 toner copper with coil.pdf
    AX-11 toner copper with coil.pdf
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  • AX-11 silkscreen with coil.pdf
    AX-11 silkscreen with coil.pdf
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  • AX-11 component guide with coil.pdf
    AX-11 component guide with coil.pdf
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One channel of an AX-14 is done and singing. I think I screwed up the adjustment pot by turning it too much as now turning it doesn't do anything. Although on the plus side it is stuck at 20mV and it sounds great.

Time to start assembling the other channel and shopping for a case
 
Just from listening to the one channel the sound is very tight and defined. A huge step up from my chip-amp builds. That is a good tip on cases. At first the prices didn't look too bad but once I size one big enough to also hold the transformer and power supply they get expensive fast.
 

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  • temp.jpg
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Hello my friends, hello APEX.
Please tell me about the APEX AX20P amplifier, when the power is turned on, the protection provides a delay of 3 ... 4 seconds, which is good, but when the power is turned off, a slap is heard in the speakers. tell me how to get rid of the slap in the speakers when the power is turned off. I am using not stabilized power supply with 20000uF capacitors per shoulder.
467012d1424435062-100w-ultimate-fidelity-amplifier-apex-ax20p-jpg
 
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Hope to provide the PP12 PCB and PUS, adjustment parameters of this ear amplifier, thank you!

Greetings my friends. I finished assembling the headphone amplifier. I liked the sound, good power, no distortion. Tested with Pioneer headphones, 32R impedance.

Прогон усилите&#10.JPG
Плата усилител&#11.JPG

Thanks to APEX for this project, thanks to AlexMM for the PCB layout.
I want to add that initially the board has a small error, there is no connection of two diodes with GND in the protection circuit, I have completed the missing jumper.