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
Hi.
Unfortunately i can't set the bias. Voltage of 33R/5W is about 0v.
base of mje340/350 and Bc547/557 have about 45v Dc.
is it ok?
regards.
Unfortunately i can't set the bias. Voltage of 33R/5W is about 0v.
base of mje340/350 and Bc547/557 have about 45v Dc.
is it ok?
regards.
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
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
Attachments
Hi, looks very good. AX-11 has a super sound. Could be better if you twisted the cables. How did you attach the power transistors?
regards Olaf
regards Olaf
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
Nice work.
Cheers
Last edited:
maxxaudio use my metod to attach power transistors.
Attachments
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.
Best Regards.
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.
Best Regards.
Last edited:
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
Ax-11 layout files
Hi,
Can you pls post the latest/improved layout for Ax-11 please?
Regards,
Sumesh
Hi,
Can you pls post the latest/improved layout for Ax-11 please?
Regards,
Sumesh
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
Hi Olaf,
Here it is
http://www.diyaudio.com/forums/power-supplies/164365-class-preamp-psu.html
reg
Prasi
