Apex AX14 TO-3 version:

[hydrovac]

Here's my recent build,TO-3 version of Apex AX14... built on circuit board designed by a friend.




Final layout


single sided PCB 206.5mm x 116.5mm





Populated and tested modules


...

 

[IndianEars]

Very Nice. I have always liked this circuit, as a "Classic done Right"

Can you please share the circuit diagram n supply voltage?

Original circuit was 80 Watts @ 8 ohms & only 1 pair of output devices per channel.

Apex Ax14 SCH PDF | PDF

The document provides a circuit diagram for an audio amplifier. The diagram shows the components used, including transistors, capacitors, resistors, and diodes. It also shows how the components are connected to form the circuit. The components are laid out on the page from left to right and...

www.scribd.com

 

[hydrovac]

Very Nice. I have always liked this circuit, as a "Classic done Right"

Can you please share the circuit diagram n supply voltage?

Original circuit was 80 Watts @ 8 ohms & only 1 pair of output devices per channel.

Apex Ax14 SCH PDF | PDF

The document provides a circuit diagram for an audio amplifier. The diagram shows the components used, including transistors, capacitors, resistors, and diodes. It also shows how the components are connected to form the circuit. The components are laid out on the page from left to right and...

www.scribd.com

I do not have the modified circuit diagram with me... will ask my friend if he is willing to share it.
He recommended PSU +- 60 v rails @ 10A per module.


Modules mounted on heatsink:





Packed in a housing as temporary arrangement...





Two fans on back panel:


Soft start and speaker protect:











...

 

[IndianEars]

I do not have the modified circuit diagram with me... will ask my friend if he is willing to share it.
He recommended PSU +- 60 v rails @ 10A per module.

If it is confidential, please dont bother... Just my technical curiosity.

The original is a very well designed circuit.

Superb build & lovely pics.

CONGRATS!