100W Ultimate Fidelity Amplifier

[apexaudio]

HELLO APEX SIR ANY CHANGES IN PCB LAYOUT.
CAN U SHARE THE PCB LAYOUT IN PDF.

Speaker Terminal with DC Protect

 

[wattaniya]

Speaker Terminal with DC Protect

HELLO APEX SIR
CAN U SHARE THE BOTTOM LAYER IN PDF.
HOW MUCH POWER OUTPUT IT CAN HANDLE?

 

[apexaudio]

HELLO APEX SIR
CAN U SHARE THE BOTTOM LAYER IN PDF.
HOW MUCH POWER OUTPUT IT CAN HANDLE?

Speaker Terminal can be use with any power.

 

[wattaniya]

Speaker Terminal can be use with any power.

SO I CAN USE IT FOR AX-14 AND B500 WITHOUT ANY PROBLEM AM I CORRECT?
I KNOW THIS IS A SPEAKER PROTECTION CIRCUIT.
CAN U EXPLAIN THIS CURCUIT.

 

[apexaudio]

SO I CAN USE IT FOR AX-14 AND B500 WITHOUT ANY PROBLEM AM I CORRECT?
I KNOW THIS IS A SPEAKER PROTECTION CIRCUIT.
CAN U EXPLAIN THIS CURCUIT.

This DC ptotect can be use if rail voltage is over +/-40V DC, and if there is fuses in rails or amplifier output. If on amp out exist over +35V or -35V DC, triac conduct and short circuit speaker output.

 

[wattaniya]

This DC ptotect can be use if rail voltage is over +/-40V DC, and if there is fuses in rails or amplifier output. If on amp out exist over +35V or -35V DC, triac conduct and short circuit speaker output.

THANK U VERY MUCH FOR YOUR COPERATION.

 

[apexaudio]

THANK U VERY MUCH FOR YOUR COPERATION.

Too much questions, would you diy something?

 

[Na2nK]

AX-16 Pcb size 106.5 x 68 mm

 

[apexaudio]

AX-16 Pcb size 106.5 x 68 mm

Thanks, is this red line jumper from 'J' to 'J'?

 

[Na2nK]

yes red line for jumper 'J' to 'J'

 

[apexaudio]

yes red line for jumper 'J' to 'J'

Do you build AX16 with this pcb? Can you share your expirience?
Regards

 

[Deleted member 148505]

Hi apex,

Can I replace 2SA1837 and 2SC4793 with MJE350 and MJE340?

thanks

 

[apexaudio]

Hi apex,

Can I replace 2SA1837 and 2SC4793 with MJE350 and MJE340?

thanks

No, use some TO220 drivers like TIP31C and TIP32C.

 

[noobie]

75v

apex, a little question,

if i were to use "Na2nk" pcb, and use +-75vdc with 3 pairs of output...

Q. Will it be stable? or i should change transistors? if, which is it?

 

[wattaniya]

Too much questions, would you diy something?

BECAUSE YOURE ARE A SIR, AND I AM A STUDENT THATS WHY I AM ASKING TOO MUCH QUESTIONS.

 

[apexaudio]

BECAUSE YOURE ARE A SIR, AND I AM A STUDENT THATS WHY I AM ASKING TOO MUCH QUESTIONS.

It's OK to ask questions about building amplifier, this is diyaudio forum. You can't learn much here, it's not school.

 

[apexaudio]

apex, a little question,

if i were to use "Na2nk" pcb, and use +-75vdc with 3 pairs of output...

Q. Will it be stable? or i should change transistors? if, which is it?

No need to change anything, just use 3 pairs with +/-75V rail.

 

[Na2nK]

Do you build AX16 with this pcb? Can you share your expirience?
Regards

Yes i bulid with those pcb, it's give me new experience for listen the music, although i only use local speaker not hifi speaker. and now my old diy amplifier must retired all
Mr. Mile i very interesting for build AX500 now after taste sound quality of AX16, please share the AX500 project.

Regard

 

[apexaudio]

Yes i bulid with those pcb, it's give me new experience for listen the music, although i only use local speaker not hifi speaker. and now my old diy amplifier must retired all
Mr. Mile i very interesting for build AX500 now after taste sound quality of AX16, please share the AX500 project.

Regard

What is 'local speaker'? Can you post some pictures?
Regards

 

[Na2nK]

sorry for my english, 'local speakers' I mean the speaker of domestic production and not including the high class speakers.
this is my AX16

and this is AX16 with PSU + Protect, transformer 5A CT 45V