100W Ultimate Fidelity Amplifier

[Kokanee]

Thanks for the info on the asc files. Looks like I will not need this until I start using Circuit Logics.

Does anybody know if there is a difference between Spice, XSpice, and LTSpice.

Thanks,

Myles

 

[keantoken]

LTSpice is probably better. It uses an updated simulator engine.

 

[Bilbon]

Homemade pcb for AX-11 with TO-3 outputs. Original pcb design by Willy B. Cerna, with some modifications.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

 

[apexaudio]

Homemade pcb for AX-11 with TO-3 outputs. Original pcb design by Willy B. Cerna, with some modifications.

Nice pcb,
Regards

 

[kamranyousaf]

Respected Sir,

please share an image from the back(PCB layout) of this beautiful amp Thanks.

 

[7444827]

Hi, Sir Apex, can i do like that?
[img=http://s3.postimg.org/vgg3m5p67/Apex_AX11_SCH2.jpg]

 

[apexaudio]

Hi, Sir Apex, can i do like that?
[img=http://s3.postimg.org/vgg3m5p67/Apex_AX11_SCH2.jpg]

Yes, DC offset can be set like that.

 

[Bilbon]

AX-11 ready for the initial tests ...

 

[Nagark]

Nice

I was very eager.... let's start with next Apex.. Thank you mr. Mile for this kind of fun...Sir Alex, Thank you also... 😀😀😀

really a great result you used toner transfer?
It looks like it was made with photographic process

 

[Nagark]

NICE

really a great result you used toner transfer?
It looks like it was made with photographic process

really a great result you used toner transfer?
It looks like it was made with photographic process

 

[apexaudio]

AX-11 ready for the initial tests ...

An externally hosted image should be here but it was not working when we last tested it.

Nice work,
Regards

 

[student II]

Does anybody can share AX-11 with TO-3 sprint-layout file

regards

 

[yakusa]

AX-14 Testing,

I started testing my AX14, set up bias to 15mV, and DC offset is 2.5mV. i have it with my bulb tester and no light stay off. connected an speaker and sound is good. however when i measure the output power i use a 8ohm dummy load when I pass over 14V of power the light bulb tester lights up, turn the volume down under 14V and lights goes off. Any avise to troubleshoot will be appreciated.

 

[maxwell007]

really a great result you used toner transfer?
It looks like it was made with photographic process

Really toner transfer... 😀

 

[apexaudio]

AX-14 Testing,

I started testing my AX14, set up bias to 15mV, and DC offset is 2.5mV. i have it with my bulb tester and no light stay off. connected an speaker and sound is good. however when i measure the output power i use a 8ohm dummy load when I pass over 14V of power the light bulb tester lights up, turn the volume down under 14V and lights goes off. Any avise to troubleshoot will be appreciated.

It is OK. You must measure output power without light bulb.

 

[AndrewT]

AX-14 Testing,

I started testing my AX14, set up bias to 15mV, and DC offset is 2.5mV. i have it with my bulb tester and no light stay off. connected an speaker and sound is good. however when i measure the output power i use a 8ohm dummy load when I pass over 14V of power the light bulb tester lights up, turn the volume down under 14V and lights goes off. Any avise to troubleshoot will be appreciated.

The Mains Bulb Tester is a damage limitation device in case one has made a mistake with wiring.

You do not use it to bias an output stage.
You do not use it to test power outputs.

 

[prasi]

You have keen eyes, at following schematic on pcb layout. 😉

Completed layout of A4 last night.

Regards,
Sonal Kunal

Hi Sonal,
Very nice layout. Has it been tested by you or anyone? If so, what is the impression?
regards
Prasi

 

[prasi]

I make AX11 simulation and modified it.

Hi Bumo,
Have built and tested this amp or is it just simulated?
reg
prasi

 

[bimo]

Hi Bumo,
Have built and tested this amp or is it just simulated?
reg
prasi

It just simulated 🙂
I built several amplifier base on simulation. Almost all of them can work at first built. It need some tweaking to make it perfect.

You can build another amplifier from me on my blog here. But, it use Indonesia languange.

 

[prasi]

Sorry I misspelled your name, Bimo. It is now too late to edit