100W Ultimate Fidelity Amplifier

[apexaudio]

FH5

 

[44250]

looks like Dragan100 was in action! 🙂

 

[Vunce]

Where are more details for post#14162?? Thanks.

 

[Joel Wesseling]

Prasi have made a very nice and compact stereo amplifier for LM1875T but I can't find this moment the tread to provide you a link. These are all that I have stored in my machine.

Elias

I Built it. Running for an afternoon. Sound is excellent so far!

 

[Ciprian1984]

Can someone help me with an advice or something about APEX A33? I build up one pair ,works perfect at +/-62Vcc but the first MJE's get hot then the others and i already put them on heatsink. The BIAS is set it up at 20mV,the final and pre-final transistor get worm like normaly,the sound looks good on oscilloscope also...only that first 2 MJE's go hot,not worm
Thanks and best regards!

 

[Unique786]

Hi everyone Kindly provide me apex 33 pdf file. I also find it of a long time but I can't find it so kindly give me PDF file so that I continue work on my amp

 

[44250]

isn*t +-62Vdc about 7-10Vdc too high PSU voltage,per rail? that is an amplifier with only two output pairs if i remember good

 

[Joel Wesseling]

Mini AX11 - Nice amp!

 

[Joel Wesseling]

FH9 - Has anyone built this one? Both channels on one board.

 

[emedia4u]

FH5

Is there PCB available for FH5? Is it for SIOC-8 or you need an adapter?

 

[quadtech]

Mini AX11 - Nice amp!

Joel, great build. By any chance, did you use the gerbers I posted on page 627, post #12524?

 

[Joel Wesseling]

Thanks! Yes Quadtech, I used the Gerbers from 12524
You drew this one, Great work!

I'll be installing them in a Dissipante 2U with a line stage for a full function Integrated.

I used MJE15032G/MJE15033G

 

[quadtech]

Actually I got the original layout file from Borys/Vdij and modified it for double sided and some other minor tweaks.
Glad to know someone else also successfully used the files.

 

[thimios]

I love the simplicity! Very nice Apex Audio! Can you show me where schematic is posted so I can add to the Directory thread?

How does it sound compared to FX8 (the bench mark of comparison)?

Is it a black&white pcb for this simple amplifier?

 

[Ciprian1984]

isn*t +-62Vdc about 7-10Vdc too high PSU voltage,per rail? that is an amplifier with only two output pairs if i remember good

That is true but APEX A40 can handle +/-65Vcc (i dont know how because the caps are at 63V) and have same construction in that area. I will try remove the resistors of 10 ohms from power the pre-final stage and i will supply that part with stabilized power supply of +/-61Vcc-62Vcc

 

[Joel Wesseling]

Are Preamps P40 and P30ZF based on older commercial designs? Which designs?

 

[Kuba_eM]

Marantz?

 

[chermann]

Hi

I went trough the thread with search function. i found schematic, gerber and finaly my pcb is in my hand but...
I am searching for the FX8 Bimo MOD BOM.. (7398...or 13878...) i found a lot of interesting things but i miss the BOM.
Please can you help me?

thanks
chris

 

[Joel Wesseling]

BOM's are not always available. Use the schematic and the board

 

[chermann]

okay...i just want to have this fuse holder which XRK is using...i download nearly everything....🙂

thanks chris