100W Ultimate Fidelity Amplifier

Nice work, with 1k trimpot you can set THD to minimum.
What is PSU for preamp?
Regards
Hi, here is the sprint file and the circuit with numbered transistors. Maybe someone finds it useful.
The power supply in the picture from the previous post is a standard circuit with LM317 / 337. However, it must be replaced with one with a larger heat sink for stereo amplifier.

regards Olaf
 

Attachments

  • P20-SCHEM.jpg
    P20-SCHEM.jpg
    487.3 KB · Views: 1,653
  • PSU_2X24V_LM317.jpg
    PSU_2X24V_LM317.jpg
    445.2 KB · Views: 1,587
  • P20.zip
    41.5 KB · Views: 425
Hi, here is the sprint file and the circuit with numbered transistors. Maybe someone finds it useful.
The power supply in the picture from the previous post is a standard circuit with LM317 / 337. However, it must be replaced with one with a larger heat sink for stereo amplifier.

regards Olaf

Thank you for this nice pcb, and thanks for made and test this circuit.
Regards
 
Maybe i vas a litle late vith the tread but here is my AX-11, best amp in the world :)

attachment.php


attachment.php


Transformer is recycled, 4x12V 8.6A from halogen light power supply, gives 2x36VDC after bridge, rectifier is simple, KBU806 and 4x4700uF per rail, vas transistors MJE340/350, drivers MJE15030/15031 and outputs 2SA1943/SC5200

Sound is great vay better than most comercial amps i have and better than LF55 that i was builded previously.

Thanks to Mile for help an cheers to all :cheers:
 

Attachments

  • DSCN5362.JPG
    DSCN5362.JPG
    237 KB · Views: 1,754
  • DSCN5363.JPG
    DSCN5363.JPG
    235.9 KB · Views: 1,746
Maybe i vas a litle late vith the tread but here is my AX-11, best amp in the world :)


Transformer is recycled, 4x12V 8.6A from halogen light power supply, gives 2x36VDC after bridge, rectifier is simple, KBU806 and 4x4700uF per rail, vas transistors MJE340/350, drivers MJE15030/15031 and outputs 2SA1943/SC5200

Sound is great vay better than most comercial amps i have and better than LF55 that i was builded previously.

Thanks to Mile for help an cheers to all :cheers:

Nice work.
Cheers
 
Last edited:
Hi.
this is a stereo apex ax-14P that I've made recently.
It has very clear sound.
I've made very amp heretofore, but this one is one of the greatest amp that I've ever made.
but when amp clipping occurs, the relay goes to Continuous off/on that destroys the sound.
photo_2016-10-18_01-17-49.jpg

photo_2016-10-18_01-17-45.jpg

photo_2016-10-18_01-17-37.jpg

Best Regards.
 
Last edited:
Tone Control

Hi Mile,

Thanks for the Tone control circuit. I am building an all APEX P30 preamp. Included will be the P30, MM3, A class PSU and this tone control circuit. I am not sure how the tone circuit and the volume control connect with the P30. DO you have a schematic showing where to integrate the tone circuit?

Thanks, Terry
 

Attachments

  • Apex tone control top.jpg
    Apex tone control top.jpg
    402.5 KB · Views: 1,877
  • P30 roughly placed.jpg
    P30 roughly placed.jpg
    426.5 KB · Views: 2,533
Hi Mile,

Thanks for the Tone control circuit. I am building an all APEX P30 preamp. Included will be the P30, MM3, A class PSU and this tone control circuit. I am not sure how the tone circuit and the volume control connect with the P30. DO you have a schematic showing where to integrate the tone circuit?

Thanks, Terry

Nice work, connect tone control input to output of P30 input buffer and tone control output to volume pot input... A class PSU can not give current to supply all this circuits.
Regards