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Old 7th December 2010, 01:16 AM   #1011
Mamak is offline Mamak  Malaysia
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Quote:
Originally Posted by engel dela pena View Post
sorry for my lines
hope this make sense
apex pls. correct me if i'm wrong
this for h900 or b500?im not understand about using tl072 step driver
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Old 7th December 2010, 02:32 AM   #1012
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b500 is b500
if u need a h class amp then u need tl072 step drive ,
tlo072 make b500 AB class to h class.
h900 is h class very good powerful amp bt 1st make b500 for experience.
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Old 7th December 2010, 05:48 AM   #1013
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does any body where in the post apex PSU-7 WITH SOFTSTART AND PROTECT OUT pls.
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Old 7th December 2010, 10:42 AM   #1014
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sekhar,
where is the driver pcb?
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Old 7th December 2010, 10:48 AM   #1015
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Quote:
Originally Posted by Mamak View Post
apex.b500 need step driver or not?or step driver only for h900?i still collect enough information to build this amp.i want to drive car subwoofer speaker.
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
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Old 7th December 2010, 10:50 AM   #1016
Mamak is offline Mamak  Malaysia
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ohh i see.thanks apek.my ax14 not work.high voltage at output?what bjt are damage?
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Old 7th December 2010, 10:51 AM   #1017
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Quote:
Originally Posted by rhodrich View Post
does any body where in the post apex PSU-7 WITH SOFTSTART AND PROTECT OUT pls.
PSU-7 is for MOSFET amplifier with 4xIRFP240/9240 in thread MOSFET Amplifier IRFP240/IRFP9240 post #333.
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Old 7th December 2010, 10:52 AM   #1018
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Default new SMD design

Hi all,
this is a new SMD based design. hope you all will like it.
Attached Files
File Type: pdf SMD B500 top.pdf (43.1 KB, 867 views)
File Type: pdf SMD B500 bot 1.pdf (59.4 KB, 707 views)
File Type: pdf SMD B500 bot 2.pdf (43.2 KB, 588 views)
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Old 7th December 2010, 11:02 AM   #1019
yohnsee is offline yohnsee  Hungary
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Default B500 - one channel

Hy everyone! I finally finished the metalwork with the B500 heatsinks, and could start one of the amps. As soon as I have time, I'll post pictures of it, but at the moment all I can say is: WOW! This sounds great. As far as I can only try it on my 50w kenwood hifi speakers, it is very powerful and has excellent sound (for my ears). So thank you Apex for sharing this with us, and as soon as I can I will post pictures.
Bye
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Old 7th December 2010, 12:26 PM   #1020
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Quote:
Originally Posted by jash2008 View Post
Hi all,
this is a new SMD based design. hope you all will like it.
Thanks for share, I like modern version, do you planing to buid it?
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