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Old 20th May 2012, 11:30 AM   #2021
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sound is excellent.
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Old 20th May 2012, 08:52 PM   #2022
44250 is offline 44250  Serbia
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Thumbs up lookin´ good!

Quote:
Originally Posted by nazirdigi View Post
hi apex sir,
i did what u said in post 2016, now no hum.

my camera focusing is little problem, that's why the images are smudge.
i used these tools to make the casing, taper,taper hande,mini circular saw,drill machine, jigsaw mashine,c clamp.
thanks.
He he now the pictures look very artistic! It looks great,specially when a man look´s what simple tools have you used to do it! What is a power of a transformer and why so small number of words in a comment of sound?

Am i wrong or you did a H900 too?
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Old 20th May 2012, 09:15 PM   #2023
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Quote:
Originally Posted by ;3030761
He he now the pictures look very artistic! It looks great,specially when a man look´s what simple tools have you used to do it! What is a power of a transformer and why so small number of words in a comment of sound?

Am i wrong or you did a H900 too?
hi 44250,
the transformer power is 1100watts.

b500 is a power full amp, but already made the h900 after b500 ,so h900 is more power than b500, and i already made cheshta amp 1500watts.

thats why i answered in short.
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Old 21st May 2012, 08:22 AM   #2024
44250 is offline 44250  Serbia
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Thank you for your answer!
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Old 21st May 2012, 08:38 AM   #2025
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hi apex sir,
is this copper routing is safety?
1mm space i give for this pcb.
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File Type: jpg 1mm space.jpg (127.6 KB, 816 views)
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Old 21st May 2012, 08:50 AM   #2026
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Quote:
Originally Posted by 44250 View Post
Thank you for your answer!
did u see this page.
Cheshtap Power Amp
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Old 21st May 2012, 12:36 PM   #2027
fayza is offline fayza  Indonesia
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Quote:
Originally Posted by apexaudio View Post
2N5401 is for VI cut-out protect.
Feedback circuit is important NE5532 can be replaced with another OP amp.
can we use TL 071, C4558?
regards
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Old 21st May 2012, 01:07 PM   #2028
fayza is offline fayza  Indonesia
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Quote:
Originally Posted by apexaudio View Post
Step driver is separate circuit and can be use with any classAB amp to get classH amp.
B500 and H900 don't need step driver, B500 is classAB amp and H900 is classH amp with integrited step driver.
Regards
Mr. Mile...
on b500 can I change MJE 15032 / 33 with cros reference transistors? hard to find these transistors in my place (sory my english)

regards
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Old 21st May 2012, 06:53 PM   #2029
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hi apex sir,
can u check post no 2025.
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Old 22nd May 2012, 03:34 PM   #2030
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hi apex sir,
any replacement for bd681, hard to find .
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