Thanks Terry and appreciate you for providing me the file and the experience,knowledge that you come across about Apex A33 . " I built the A33 using these so I know they are good "[emoji106][emoji106]
About APEX P30ZF
Well... I'm trying very hard to find the specs for this preamplifier, but in vane. Before start building this 30 bjt's device it's important for me to have. Is anyone willing to point me there - if I mist the post ?
Thanking you in advance for any help .
Elias
Well... I'm trying very hard to find the specs for this preamplifier, but in vane. Before start building this 30 bjt's device it's important for me to have. Is anyone willing to point me there - if I mist the post ?
Thanking you in advance for any help .
Elias
hello Gurpreet,
I dont know if it will work with 5200/1943 output devices as the gains for BDW devices are very high compare to C5200/A1943.
Also there is much scope to optimize the PCB with regard to traces and component placement. Over the weekend I will try if I can do the layout and share here.
Ax14 amplifier
Hi all. I want to do a pair of ax14 amplifier. I think to use MJ15003/MJ15004 for the output,MJE15030/MJE15031 for drivers, and with a supply of +/-35VDC. Is it possible to get 60w/8ohms output?
Hi all. I want to do a pair of ax14 amplifier. I think to use MJ15003/MJ15004 for the output,MJE15030/MJE15031 for drivers, and with a supply of +/-35VDC. Is it possible to get 60w/8ohms output?
Hi, in a calculation perspective you gona have 49W@8ohms and 98w@4ohms, but depend the power of your transformer.
Regards
Ok. I have two transformers with 25-0-25 VAC, about 200 VA each. How is my transistor selection above specified? How can I connect SGND with PGND?
Thanks for your reply.
Thanks for your reply.
It just means that you take your input signal ground wire and connect to power ground, meaning run the ground to the ground of your PSU board. For me, it’s easier anyway because the PSU is usually closer in most of my builds
I think you will be fine. Here is a pic of two of my AX14 on an A/B setup. They are virtually indistinguishable from one another.
Attachments
AX14 Amplifier
Nice pic sir. I Understand the wirings and completed the system semi finally. Amplifier sounding superb and no humming. Thanks to apex audio for the excellent amp design. Now I need to construct the preamplifier. I am using a tone control with TL072 op amp. Thanks to all once again. Here is some pics.
Nice pic sir. I Understand the wirings and completed the system semi finally. Amplifier sounding superb and no humming. Thanks to apex audio for the excellent amp design. Now I need to construct the preamplifier. I am using a tone control with TL072 op amp. Thanks to all once again. Here is some pics.
Attachments
Hello brother, long time, no see. busy building any other amp? let me know if i can help with something🙂
nice work on the P30 vargas, all the best for your build.
regards
prasi