100W Ultimate Fidelity Amplifier

[surjitsharmaph]

Here are A33 Gerbers. I don't have the others. I built the A33 using these so I know they are good.

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]

 

[Elias Zacharopoulos]

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

 

[clpk]

Thanks Mr. Mile, it's now corrected.

Regards,

Hello, this protection connected to the resistor emitter?

 

[prasi]

I have try to make B50 PCB layout without darlington output transistor. I am used c4793/a1837 as as a driver and to c5200/a1943 as output just like B500. Please check for any error.
Regards

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.

 

[Gurpreet Turna]

hello Gurpreet,
Over the weekend I will try if I can do the layout and share here.

Ok Prasi, Thanks

 

[aneeshchelad]

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?

 

[kandimba]

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

 

[aneeshchelad]

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.

 

[apexaudio]

TP2 Preamp

 

[bullittstang]

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.

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

 

[channini]

a40

youtube

 

[still4given]

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.

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.

 

[DILIP KUMAR]

Ax14 Good

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.

 

[aneeshchelad]

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.

 

[Astaro]

what are your thoughts on wiring the Board? Tips?

 

[prasi]

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.

Hello Gurpreet,
here is a rough b50 layout.

 

[shabusf]

Apex P30

In progress.... the PSUs are from aliexpress, one for P30 and the other for TB3.

Regards
Sha

 

[thimios]

Hello Gurpreet,
here is a rough b50 layout.

Whatever pcb.... ask to Mr. prasi!
We are lucky that we have an expert!!!

 

[vargasmongo3435]

really thimios? what about me? I do my things too lol I'm just joking bro I have the Apex P30 but since the corona virus all shipping are in hold

 

[prasi]

Whatever pcb.... ask to Mr. prasi!
We are lucky that we have an expert!!!

Hello brother, long time, no see. busy building any other amp? let me know if i can help with something

really thimios? what about me? I do my things too lol I'm just joking bro I have the Apex P30 but since the corona virus all shipping are in hold

nice work on the P30 vargas, all the best for your build.

regards
prasi