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Old 30th July 2011, 11:39 AM   #1491
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Quote:
Originally Posted by mkubawat View Post
Tell me, soft start circuit used or not
hi mkubawat.
i am not using soft start.
now i think ok for the 5sec delay. the relay is connecting after 5sec.
but when i off the amp with low volume, big sound is coming like (top) .
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Old 30th July 2011, 01:43 PM   #1492
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Quote:
Originally Posted by nazirdigi View Post
hi mkubawat.
i am not using soft start.
now i think ok for the 5sec delay. the relay is connecting after 5sec.
but when i off the amp with low volume, big sound is coming like (top) .
There are two reason in my mind for this type of problem
1. if sound comes immediate with turn of then it is due to loose contacts in AC side wiring or main switch contacts
2. if after 2-3 sec delay then check amp's pre IC supply please try to stabilize it.
tell me if not solved
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Old 30th July 2011, 04:31 PM   #1493
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Quote:
Originally Posted by mkubawat View Post
There are two reason in my mind for this type of problem
1. if sound comes immediate with turn of then it is due to loose contacts in AC side wiring or main switch contacts
2. if after 2-3 sec delay then check amp's pre IC supply please try to stabilize it.
tell me if not solved
thanks mkubawat.
i checked on off main switch.
problem is on off switch.
now no on off thumbs. no sounds on off.
thank u very very much for your cooperation.
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Old 30th July 2011, 05:46 PM   #1494
STAGE4 is offline STAGE4  Sri Lanka
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Attached Files
File Type: pdf diy CHE amp output C.pdf (51.2 KB, 1249 views)
File Type: pdf diy CHE amp DRIVER S.pdf (26.3 KB, 1026 views)
File Type: pdf diy CHE amp OUT S.pdf (40.6 KB, 1037 views)
File Type: pdf diyCHE amp DRIVER C.pdf (26.5 KB, 951 views)
File Type: pdf HEAT SINK.pdf (7.3 KB, 801 views)
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Old 30th July 2011, 06:09 PM   #1495
STAGE4 is offline STAGE4  Sri Lanka
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use mjl21193,mjl21194 for the outputs and drivers & you can use two types of relays for the speaker protection relay,(12V)..good sound...enjoy it..
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Old 30th July 2011, 06:31 PM   #1496
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Quote:
Originally Posted by CHESHTAP View Post
use mjl21193,mjl21194 for the outputs and drivers & you can use two types of relays for the speaker protection relay,(12V)..good sound...enjoy it..
hello cheshtap.
where can i buy mjl21194 numbers in sri lanka , i mean shop address.
thanks.
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Old 31st July 2011, 04:59 AM   #1497
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Dear CHESTAP

Your work is appreciable , but where are schematic & supply detail.
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Old 31st July 2011, 05:18 AM   #1498
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Attached Files
File Type: pdf ExpressSCH-1.pdf (54.3 KB, 1346 views)
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Old 31st July 2011, 06:04 AM   #1499
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this schematic does not match
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Old 31st July 2011, 06:23 AM   #1500
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Quote:
Originally Posted by Tekko View Post
eesbiboi, those are 5 volt zener diodes and part of the railswitching circuit.
thank you dear tekko...

now im wondering which schema to follow...

i got this other one from a different forum posted also by sir chestap
seems to have a bit of insimilarity

regards
ees...
Attached Images
File Type: jpg step2j.JPG (193.5 KB, 1681 views)
File Type: jpg stepj.JPG (202.4 KB, 1555 views)

Last edited by eesbiboi; 31st July 2011 at 06:33 AM.
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