100W Ultimate Fidelity Amplifier

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prasi

prasi

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Joined 2014
sites.google.com/site/analogdesign1234/
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ivanlukic

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Joined 2010
Bimo's De Luxe version of AX11

I changed the values of few components. PCB design is original Anistardi's. This is the best version of AX11. Highly recommended!
 

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us1070

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Joined 2014
apexaudio said:
Connect input gnd to psu gnd...
Click to expand...

Thanks Sir for replying. Now it is give around 20mV

But there is a sound problem it cannot play anything clear i also tried adjusting the bias still the same

please what could be the problem please see image?
 

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us1070

Member
Joined 2014
us1070 said:
Thanks Sir for replying. Now it is give around 20mV

But there is a sound problem it cannot play anything clear i also tried adjusting the bias still the same

please what could be the problem please see image?
Click to expand...

My AX-14 update:
Just checked again everything works fine for the low frequency but for high frequency is sounding so slow.

please tell me what to change i want to use this amp for high frequency.
 
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prasi

prasi

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ivanlukic said:
bimo said:
Congratulation. :cool:

Can you share the components that you changed?
How about sound impression?[/QUOTE

I slightly lowered the current through VAS transistors (R12, R16), using 68R instead of 47R.
R1 = 750R
C2 = 220pF
R22, R23 = 0R33

I am short of time at the moment so I shall share subjective impressions later.:)
Click to expand...

Thanks Mr. Evanlukic,
I am going to test this Bimo version too. I made my own layout posted in http://www.diyaudio.com/forums/soli...imate-fidelity-amplifier-541.html#post4460302. I will update it with your tested values.
Reg
Prasi
Click to expand...
 
still4given

still4given

Member
Joined 2004
c08bm said:
Yes, it's stereo.
Schematic from mister Mile http://www.diyaudio.com/forums/soli...imate-fidelity-amplifier-550.html#post4518802

Sprint layout file for own customizations attached



Oh, i see now i skipped 100K resistor from 5551 colector to +, sorry about that
Click to expand...

I etched a couple boards per your sprint file. After completing them I decided to add some text to note the use of the terminals for clarity later. Alignment is not perfect because I added it after the fact. I also added a little copper at the ground trace at the bottom. It was very thin where it passed the "Pro" connection. I will try to populate them today if I have time.

Blessings, Terry
 

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still4given

still4given

Member
Joined 2004
prasi said:
Sorry, the post is #5402 (my layout). Bimo's updated schematic (on which my layout is based) is at #5221. Bimo's original layout is at #5214:D
reg
Prasi
Click to expand...

Thanks.

After etching I noticed a missing resistor. I added it to the sprint file and will just fit it in on the pcb I already etched. Let me know if I am right about this.

Thanks, Terry
 

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