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Old 29th August 2012, 08:42 PM   #1511
AndrewT is offline AndrewT  Scotland
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OOPs I missed that typo.
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regards Andrew T.
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Old 31st August 2012, 09:48 AM   #1512
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hello friends my AX-14 voice is not clear can any one help me plz. . .
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Old 31st August 2012, 12:47 PM   #1513
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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

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vargasmongo3435
Attached Images
File Type: png caps.PNG (121.2 KB, 1033 views)

Last edited by vargasmongo3435; 31st August 2012 at 12:52 PM.
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Old 31st August 2012, 01:09 PM   #1514
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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.

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Last edited by vargasmongo3435; 31st August 2012 at 01:13 PM. Reason: error writting
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Old 31st August 2012, 04:02 PM   #1515
wiljj78 is offline wiljj78  Philippines
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Quote:
Originally Posted by shravanth View Post
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,
Attached Images
File Type: jpg APEX AX14 Layout.jpg (211.7 KB, 966 views)
File Type: jpg APEX AX14 SCH.jpg (426.5 KB, 872 views)

Last edited by wiljj78; 31st August 2012 at 04:07 PM.
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Old 31st August 2012, 04:25 PM   #1516
wiljj78 is offline wiljj78  Philippines
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[QUOTE=shravanth;3143854]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,
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File Type: jpg dsc03786b.jpg (219.5 KB, 813 views)
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Old 4th September 2012, 07:59 PM   #1517
wiljj78 is offline wiljj78  Philippines
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Default 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,
Attached Images
File Type: jpg APEX PSU+Protect.jpg (579.7 KB, 435 views)
File Type: jpg APEX F100 PSU PCB.jpg (499.6 KB, 396 views)
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Old 4th September 2012, 09:21 PM   #1518
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Quote:
Originally Posted by wiljj78 View Post
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.
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Old 5th September 2012, 10:46 AM   #1519
wiljj78 is offline wiljj78  Philippines
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Quote:
Originally Posted by apexaudio View Post
This is 100pF cap.
Regards
Thank you soo much......

Regards,
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Old 7th September 2012, 02:26 AM   #1520
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[QUOTE=wiljj78;3147145]
Quote:
Originally Posted by shravanth View Post
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
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