100W Ultimate Fidelity Amplifier

[macd]

Balanced input schematic....

Good Day....

Can someone please guide me to balanced input schematic as I would like to drive amp with mixer with balanced outputs...

Thanks in advance....

Regards,
macd....

 

[doityourselfamp]

mrApex ML3 equ

Hi
i tried design smd type of ML3
but it is not worked.
any one have a correct schematic for it?

 

[doityourselfamp]

any one can help about ML3?

 

[avtech]

any one can help about ML3?

Are you referring to this one?


Mic, Line, EQ... Preamps

 

[desertstorm]

Hi
i tried design smd type of ML3
but it is not worked.
any one have a correct schematic for it?

just follow the original schematics and im sure it is working good

 

[kandimba]

Good day Thimios...

Amp is working now as advertise.... Thanks a lot for your help... cannot give feedback as to the sound quality as I do not have a test speaker at work... only dummy load.... I'll connect a speaker and some music source tonight and give feedback....

Regards...
macd [/QUOT

It should work very well, I did it the PCP design and I have two pairs working very well.

 

[macd]

AX14P....

Good day Thimios...

Amp is working now as advertise.... Thanks a lot for your help... cannot give feedback as to the sound quality as I do not have a test speaker at work... only dummy load.... I'll connect a speaker and some music source tonight and give feedback....

Regards...
macd [/QUOT

It should work very well, I did it the PCP design and I have two pairs working very well.

Good Day Kandimba....

Thanks for the PCB layout. I can testify that circuit is working well with +-49V supply. Very powerful and clear sound.

I'm in the process of building your AX20P PCB layout and will post feedback soon.

Thanks to Sir Apex for the circuit and to you SIR for the layout...

Regards,
macd

 

[doityourselfamp]

just follow the original schematics and im sure it is working good

yes
you are righte
thank you

 

[macd]

AX20P Singing....

Good Day....

Thanks to Sir Apex for the AX20 circuit and a Big thanks to Kandimba for the PCB Layout....

Completed AX20P....see pics attached....

Thanks Sir Apex and Kandimba.....

One question....how much bias current for this circuit???? How do I adjust the bias current??? Here is what I am doing....

I measure with DVM across 0.33R resistor. I use ohms law...V=IR...6.6mV=20mA x 0.33....Is this correct????

Regards,
macd.....

 

[rohin]

yes
you are righte
thank you

i made more than 20 ml3 working good.

 

[Vrystaat]

Good Day....

Thanks to Sir Apex for the AX20 circuit and a Big thanks to Kandimba for the PCB Layout....

Completed AX20P....see pics attached....

Thanks Sir Apex and Kandimba.....

One question....how much bias current for this circuit???? How do I adjust the bias current??? Here is what I am doing....

I measure with DVM across 0.33R resistor. I use ohms law...V=IR...6.6mV=20mA x 0.33....Is this correct????

Regards,
macd.....

Yip, math is correct !

 

[HIFI0101]

I was thinking if i build the A40 with good caps like nichicon kz and other original good components. What is the price range of comercial amps it can compete with or is diy amp are just a fun thing? :/

 

[macd]

Good Day....

Can someone please guide me to balanced input schematic as I would like to drive amp with mixer with balanced outputs...

Thanks in advance....

Regards,
macd....

Good Day Sir Apex....

Thank's for all your audio designs...I am very grateful...

I've just completed an AX14P and an AX20P amp design, both using Kandimba's PCB layouts... Both amp's have great sounds...

Just one Question... I have a mixer with balance outputs. How do I connect mixer's balance output to input of amplifiers?

Thanks in advance...

Regards,
macd.....

Class D Amp with LM566, LM393 and 2XIRF530

Good Day Sir...

This is what I was looking for...Thanks again...

Just some feedback...I connected my AX20 yesterday with proper speaker and supply. Sound is very nice, but I like AX14 sound more. Better trebles and bass. Tested both AMP's with same setup...same psu, input mixer, speakers.... AX14 my favourite..

Thanks again for all your designs...

Regards,
macd

 

[kandimba]

Yip, math is correct !

If you change R16 1K to 1K5 you may get higer bias, 15mV on R23 .33

 

[macd]

Ax20...

If you change R16 1K to 1K5 you may get higer bias, 15mV on R23 .33

Thank you Kandimba,

I will test tonight with 1K5 resistor....

Regards,
macd

 

[Sunny22g]

Macd can u give layout

 

[macd]

Macd can u give layout

Hi,

no problem...not my layout, Kandimba did the layout...work's 100%..build as is....you will not be disappointed...lot's of power...

Regards,
macd....

 

[44250]

it is all about a lot of power all around anyway....

 

[stewin]

Hi macd nice build and thanks for posting the PCB files , cheers sir

 

[rohin]

hi apex sir and everyone. in post 1 sch of ax 14 r2 and r8 right or in post 253 layout is right because in layout 22k resistance in place of 560r and 560r in place of 22k .which is right please tell me.