Hi Apex
I read so far about 60 pages of this really long thread, I want to ask about transistor equivalents for AX14:
Q1, Q2, Q3 (2N5401): Can I use BC557A (50V 100mA 500mW hfe 110..220) or A1015A (same specs with BC557A)?
Q11 (2SA1837): Can I use MJE15033 (pnp 250V 8A 50W hfe 50)?
Q13 (2SC4793): Can I use MJE15032 (npn 250V 8A 50W hfe 50)?
Thank you
I read so far about 60 pages of this really long thread, I want to ask about transistor equivalents for AX14:
Q1, Q2, Q3 (2N5401): Can I use BC557A (50V 100mA 500mW hfe 110..220) or A1015A (same specs with BC557A)?
Q11 (2SA1837): Can I use MJE15033 (pnp 250V 8A 50W hfe 50)?
Q13 (2SC4793): Can I use MJE15032 (npn 250V 8A 50W hfe 50)?
Thank you
Thanks, Im looking at a supply board for the main filter caps, +-15V for accessories and pre-amp. and protection for stereo boards.
Would something like this work, any advice is really appreciated.
Or maybe someone has files for something similar. Ill be sending these PCB away to be made at JLCPCB.
Regards
Would something like this work, any advice is really appreciated.
Or maybe someone has files for something similar. Ill be sending these PCB away to be made at JLCPCB.
Regards
Attachments
with covid it's a safe pastime !!!For sure!
BTW, isn't C6's polarity wrong in the component layout? (100uf/16V). For example in post #708.
BTW, isn't C6's polarity wrong in the component layout? (100uf/16V). For example in post #708.
Another AX14P Completed...
Good Day Sir,
Completed my AX14P..Thank you so much for sharing your knowledge with us. Really great full....and thanks to Kandimba for the PCB design....just going to relax this weekend and enjoy the sweet sound coming from my AX14P...cheers😀😀😀
Regards,
macd....🙂🙂🙂
Good Day Sir,
Completed my AX14P..Thank you so much for sharing your knowledge with us. Really great full....and thanks to Kandimba for the PCB design....just going to relax this weekend and enjoy the sweet sound coming from my AX14P...cheers😀😀😀
Regards,
macd....🙂🙂🙂
Attachments
So I'm still busy trying to get this protect right.
Can you guys please comment on if this circuit implementation is correct.
Any help would really be appreciated.
Can you guys please comment on if this circuit implementation is correct.
Any help would really be appreciated.
Attachments
Last edited:
Hello to all,
I am also currently building the AX-14 power amplifier.
I'm still waiting for the circuit boards and then it will start soon.
My Peak Program Meter according to BBC standard is already in the starting blocks.
The PP meter consists of 80 light-emitting diodes with a dynamic range of -50 - +5 dB.
There are many circuits from the AX-14 here in the forum. Is there a final circuit diagram?
I am also looking for the Mosfet version.
Greetings from Germany
Translated with DeepL Translate (free version)
I am also currently building the AX-14 power amplifier.
I'm still waiting for the circuit boards and then it will start soon.
My Peak Program Meter according to BBC standard is already in the starting blocks.
The PP meter consists of 80 light-emitting diodes with a dynamic range of -50 - +5 dB.
There are many circuits from the AX-14 here in the forum. Is there a final circuit diagram?
I am also looking for the Mosfet version.
Greetings from Germany
Translated with DeepL Translate (free version)
Attachments
Thanks Terry for the files.
Stewin do you have a solution to add AC detect to this circuit.
This is what i came up with, not too elegant though.
Regards
Stewin do you have a solution to add AC detect to this circuit.
This is what i came up with, not too elegant though.
Regards
Attachments
Last edited:
Hi all,
what is the best amplifier from Apex for arround 100w on 8R ? I'm seraching but there are manyyyyy pages xD
BR
what is the best amplifier from Apex for arround 100w on 8R ? I'm seraching but there are manyyyyy pages xD
BR
you can look at post 10363. Prasi posted the one he used for his layout.
100W Ultimate Fidelity Amplifier