100W Ultimate Fidelity Amplifier

[shravanth]

what caps i need to use there
i have changed 33ohm to .33ohm amp is working but voice is not clear



What is bias current and dc offset on your amp?

Bias current - 20Ma
offset - 6.8mv

 

[AndrewT]

Bias current - 20Ma

20 Mega what?

 

[wiljj78]

20 Mega what?

lol... nice spot AndrewT.

 

[vargasmongo3435]

oh man I don't even notice that lol 20 mega amp! that will really be something no offense is funny lol

Regards
vargasmongo3435

 

[smartx21]

Too much wasted time with those cynical comments! No need!

 

[AndrewT]

If one cannot remember
n = nano = 10^-9
u = micro = 10^-6 or more correctly µ (Greek mu)
m = milli = 10^-3
k = kilo = 10^3
M = Mega = 10^6
G = Giga = 10^9
Then print out a copy and paste it onto the edge of your keyboard.
There is no excuse for slovenly use of multipilers.

 

[smartx21]

There is no excuse for slovenly use of multipilers.

And for typos?

 

[shravanth]

20 Mega what?

it is 20 milli amps

 

[vargasmongo3435]

I do apologize, I don't have intention of making fun of no one, I also misspell a lot English is my second language.

Regards
vargasmongo3435

 

[smartx21]

To the good listener, half a word is enough!

 

[AndrewT]

OOPs I missed that typo.

 

[shravanth]

hello friends my AX-14 voice is not clear can any one help me plz. . .

 

[vargasmongo3435]

hello shravanth!

Hey I have the same problem a few days ago and I didn't have a clear voice and mids on my amp, check the caps for the correct farads example: 100nF is not the same as 100pF 100nF is a big number compare to 100pF, in my case by human error, I install two 100nF instead of 100pF resulting in no high and mids I mean on the transistor that have the rule of amplifier the signal input, check that your caps my friend. here is a link of what I mean I hope is helpful for you.

Capacitor code calculator

Regards
vargasmongo3435

 

[vargasmongo3435]

Ok mister Andrew T! before you say something clever, let the low level experience guys as myself try to help, I know for sure you going to said something because of the high level of experience that you have, just be cool and relax my friend, remember we all learning continuously everyday. I do too.

Regards
vargasmongo3435

 

[wiljj78]

hello friends my AX-14 voice is not clear can any one help me plz. . .

Hi Shravanth,

You have to carefully follow the correct component guide and value of each parts (as attached) in order to get the best result, i build my AX-14 with a perfect result, and i'm sure you miss something that causing unclear voice,I suggest you to relax, take your time and review again and again all component value and transistor pin arientation (actual test and locate Base,Collector&Emmiter if possible) according to schematic and ensure no short and open tracks, as long as you follow specifically all component value i guarantee you will get the best result too.

Regards,

 

[wiljj78]

what caps i need to use there
i have changed 33ohm to .33ohm amp is working but voice is not clear

Hi Shravanth,

See attached correction.

Note: Replace 100pf to 22pf, replace 47pf to 33pf. other caps value not shown, you can refer to attached pics.

Regards,

 

[wiljj78]

Caps

Mr. Miles,

I been through all the thread but never seen someone asking about this caps in this PSU, can you please advise if this in pf or nf??? I attached the component layout and schematic in red mark.

Thanks and regards,

 

[apexaudio]

Mr. Miles,

I been through all the thread but never seen someone asking about this caps in this PSU, can you please advise if this in pf or nf??? I attached the component layout and schematic in red mark.

Thanks and regards,

This is 100pF cap.
Regards

 

[wiljj78]

This is 100pF cap.
Regards

Thank you soo much......

Regards,

 

[shravanth]

what caps i need to use there
i have changed 33ohm to .33ohm amp is working but voice is not clear

Hi Shravanth,

See attached correction.

Note: Replace 100pf to 22pf, replace 47pf to 33pf. other caps value not shown, you can refer to attached pics.

Regards,

thank u frnd i made it now music is clean n clear