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Old 12th December 2012, 01:17 PM   #2341
rizqi is offline rizqi  Indonesia
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Default b500tef driver

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Better try it ...
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Old 12th December 2012, 05:45 PM   #2342
44250 is offline 44250  Serbia
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nice one!
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Old 12th December 2012, 10:11 PM   #2343
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Originally Posted by veljko View Post
B500 with 5 pairs of output tr.
would you show the bottom of the layout, pleaasseee...
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Old 13th December 2012, 05:18 AM   #2344
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Originally Posted by suryadi5417 View Post
would you show the bottom of the layout, pleaasseee...
Layout and pcb.

Ver. wit 6 pair of outputs require A3 format of printwork.
No changes from original, only 1 or 2 pairs of tr. more.
Attached Files
File Type: pdf B500 - 5 pairs V2 Layout.pdf (173.0 KB, 625 views)
File Type: pdf B500 - 5 pairs V2.pdf (81.2 KB, 475 views)
File Type: pdf B500 - 6 pairs V2 A3 Layout.pdf (240.7 KB, 667 views)
File Type: pdf B500 - 6 pairs V2 A3.pdf (111.7 KB, 545 views)
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Old 13th December 2012, 06:56 AM   #2345
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with 5 or 6 pair output, u need tef driver stage,
without tef driver stage maximum 4 pair outputs for safety.
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Old 13th December 2012, 07:22 AM   #2346
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Originally Posted by nazirdigi View Post
with 5 or 6 pair output, u need tef driver stage,
without tef driver stage maximum 4 pair outputs for safety.
I'm not using toshiba's, have done some testing with diferent outputs with much less beta-drop on another amps and endup werry well. Gonna make one of this 2 ver for fun anyway, not for real PA.
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Old 13th December 2012, 10:35 AM   #2347
wiljj78 is offline wiljj78  Philippines
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Originally Posted by nazirdigi View Post
hi apex sir,
this is my b500 5 pair output,
bottom pcb before etching and top pcb printed.
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Originally Posted by nazirdigi View Post
here is the bottom layout.
Hello Nazirdigi,

How's the outcome of this project? is it successful?

what's the different compare to 4 pair?

Regards,
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Old 13th December 2012, 12:23 PM   #2348
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Originally Posted by wiljj78 View Post
Hello Nazirdigi,

How's the outcome of this project? is it successful?

what's the different compare to 4 pair?

Regards,
with 4 pair 5pair 6pair same power, for five or six pairs stress for drivers.
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Old 13th December 2012, 02:36 PM   #2349
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Originally Posted by nazirdigi View Post
with 4 pair 5pair 6pair same power, ...
This statement is true if you add at the end "with the same psu voltage"

Quote:
Originally Posted by nazirdigi View Post
..., for five or six pairs stress for drivers.
This one might be if you specife type of outputs


Regards.

Last edited by veljko; 13th December 2012 at 02:47 PM.
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Old 14th December 2012, 02:16 PM   #2350
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Originally Posted by nazirdigi View Post
with 4 pair 5pair 6pair same power, for five or six pairs stress for drivers.
That gives advantages if you use six pairs.
1.-power increases.
2.-votaje to the PLS is the same.
3. - We need to increase the font ampreraje.
4.-As to amending bias amperage.
5.-If aumeto the eight or more pairs to get some advantage.

Postscript: Veljko, thank you very much for uploading all this information.

best regards, Sergio.
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