100W Ultimate Fidelity Amplifier

[doityourselfamp]

HI
is this correct PCB and schematic for this type apex amp?
any one create this before?

 

[doityourselfamp]

no one is here any more ?

🙁

 

[priyank]

Big Thanks To apex

today i checked my first build of Apex ax-14

here is video ..having some issue want to discuss with you sir @apexaudio

 

[priyank]

I have build NX14 and testing with 41VDC . But its outputs DC 38V.
Need help. 😢
View attachment 1178175View attachment 1178176

Check the Transistor Orientation and valur same happend with me when i made apex ax-14 later it worked fine

 

[Astaro]

Why doesn 't anyone do FX14 ? In the simulator, it shows much less distortion than AX14

 

[alain98]

Hi Astaro,
What can be the optimum bias for FX14?

 

[Astaro]

75-100

 

[querce615]

Hi all,
I wanted to make the TB3 tone control schematic used by Marantz and I saw in #13.460-13.548-13557
the schematics and pcb layout, are the schematics and pcb correct?
Can I start the implementation without problems using NE5532 as opamp?
Sorry for my poor English.🙂

Thank you very much,
Marco

 

[mira1]

Hi Querce615, yes You do use NE5532 and any dual OP AMP, but TL072 is FET specification.

 

[querce615]

Hi Mira1,
then can I easily build the TB3 tone control using the NE5532 as OpAmp without problems?

thanks,
Marco

 

[mira1]

Hi, yes! You do use it and when you do would read about of OP AMP, here is link: https://www.diyaudio.com/community/threads/tl072-vs-ne5532.253155/page-2

 

[hassan4119]

lets discuss here about AA9MD:

AA9MD

maybe an admin can copy the AA9MD posts in the other tread..

thx

Hi
I want made it
But how much is bias qurent for each bwd transistor?
1.2 amper for all bdw93 rail and bdw94 too?
Or for each power transistor is 1.2A?
I see video in youtub..but i can finde this

 

[chermann]

please use the other thread:
i don´t build it but if you do the math it makes more sense to use overall (for all = per rail) 1,2A @ 30V rail.😉

 

[mikel1998]

Hope to provide the PP12 PCB and PUS, adjustment parameters of this ear amplifier, thank you!

Hello! Can you share lay6 for PP12 and PSU? Thanks!

 

[mikel1998]

i will go with pp12😎

is it suitable psu for pp12

Hello! Can you share PP12 lay6 , if you have ? Thanks

 

[mikel1998]

Hello ! After long troubleshooting of the P30 circuit, I managed to make it semi-functional. The pcb I used had the 2n5551 inverted. The problem now is that I have a font noise that I don't know how to get rid of it. Do you have any ideas?

 

[mikel1998]

Asta a fost Alex. Acum funcționează. Voi încerca să-l conectez la un amplificator în puțin timp ca să-l pot asculta. Unda pătrată și sinusoidală arată foarte bine.

Binecuvântări, Terry

Hello sir ! Can you help me with the above post? (https://shorturl.at/lsFKY)

 

[querce615]

Hi Mira1,
refers to #14,252 many thanks.
I read the suggested 3D with great interest.

Marco

 

[Joel Wesseling]

Here is AX-11 mini Gerbers and a view of the devices

 

[cgraf]

Thanks Joel. Boards ordered.