100W Ultimate Fidelity Amplifier

[Bilbon]

Hi,

I have a transformer with 33+33 Vac. The AX-11 will work well or need modifications? I also have 2 pairs of MJ15003/15004.
I appreciate any help.
William

 

[apexaudio]

Hi,

I have a transformer with 33+33 Vac. The AX-11 will work well or need modifications? I also have 2 pairs of MJ15003/15004.
I appreciate any help.
William

2x33vac will be ok with MJ15003/4
Regards

 

[thimios]

2x33vac will be ok with MJ15003/4
Regards

Is this(+/-46v) suitable for 4R speakers?

 

[Bilbon]

2x33vac will be ok with MJ15003/4
Regards

Ok, thanks. My speakers are 6 ohms, I can use without problem?

 

[apexaudio]

Ok, thanks. My speakers are 6 ohms, I can use without problem?

Yes any load over 4 ohms will be ok.

 

[Bilbon]

I can use the BC546/556 and BD139/140 with 33+33 Vca transformer? I also have some TIP41/42C and MPSA42/92 ...

 

[apexaudio]

I can use the BC546/556 and BD139/140 with 33+33 Vca transformer? I also have some TIP41/42C and MPSA42/92 ...

BC and BD will be OK

 

[Bilbon]

Ok. What is the best pcb option for the ax-11 with to3?

Option A

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

Option B

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

In option A, BD679 is a Darlington???!!!! In option B MPSA13 = BD139?

 

[Bilbon]

I can replace the BD679 or MPSA13 by normal transistors (not darlington)? I can not find them in stores in my region...

 

[UltimateX86]

Why not a Circlotron ?

http://www.diyaudio.com/forums/atta...0949d1440743480-vssa-circlotron-opacirclo.asc

 

[still4given]

Spam? What does this have to do with Apex?

 

[keantoken]

That's cool.

 

[UltimateX86]

Apex has proposed an opamp scheme without VAS I show another way

 

[kamranyousaf]

Repected Sir,

Can you please share its complete schematic and other details. After a long time of search finally i have found this. Its a awesome amp. I have heard very good feedback about this amp. In Pakistan Initially this was used in cinemas.

 

[kamranyousaf]

Repected Sir,
@jerry999 Can you please share its complete schematic and other details. After a long time of search finally i have found this. Its a awesome amp. I have heard very good feedback about this amp. In Pakistan Initially this was used in cinemas.

 

[kandimba]

Hi Mister Mile! I finished your (mine) AX20 with 555 protect. I took a lot of time, but I did it finally... and sounds good, thanks for your support.

Pozdrav

 

[apexaudio]

Hi Mister Mile! I finished your (mine) AX20 with 555 protect. I took a lot of time, but I did it finally... and sounds good, thanks for your support.

Pozdrav

Nice work,
Pozdrav

 

[Kokanee]

Greetings,

Just a short question: How do you open the .asc files. ????
Tried to save in pdf and could not open.

Thanks for the help,

Myles

 

[gaborbela]

You need to download LTspice to open .asc files.

 

[smartx21]

Greetings,

Just a short question: How do you open the .asc files. ????
Tried to save in pdf and could not open.

Thanks for the help,

Myles

It is much like a .TXT file.
If you rename it to .TXT, WordPad, for instance, will open it (see attachment).
And it will look like this (parts removed):

Version 4
SHEET 1 1844 1344
WIRE -1136 -368 -1264 -368
WIRE -1008 -368 -1136 -368
FLAG -1856 960 0
FLAG 576 336 0
DATAFLAG -608 48 ""
DATAFLAG -912 1024 ""
SYMBOL npn -80 -128 R0
SYMATTR InstName Q1
SYMATTR Value BD139c
SYMBOL pnp -80 672 M180
SYMATTR InstName Q2
SYMATTR Value BD140c
SYMBOL voltage 480 -160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL res -784 448 R180
TEXT -1816 -120 Left 2 !;ac oct 10 10 20000000\n.options plotwinsize=0\n.options numdgt=8\n.param freq 1k\n.param num_fft_pts 4096\n.param timestep {1/{{freq} * {num_fft_pts}}}\n.four {freq} 19 8 V(Vout)\n.tran 0 {15/freq} {2/freq} {timestep}
TEXT -1800 -296 Left 7 ;Apex A4
TEXT -1800 -168 Left 2 !.include Cordell Models.txt

Obviously this code is useless without the appropriate software (as pointed above by @gabor).