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500W PA amplifier with Limiter
500W PA amplifier with Limiter
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Old 7th December 2010, 02:16 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, 03:32 AM   #1012
aman khalsa is offline aman khalsa  India
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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, 06:48 AM   #1013
rhodrich is offline rhodrich  Philippines
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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, 11:42 AM   #1014
engel dela pena is offline engel dela pena  Philippines
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sekhar,
where is the driver pcb?
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Old 7th December 2010, 11:48 AM   #1015
apexaudio is offline apexaudio  Serbia
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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, 11:50 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, 11:51 AM   #1017
apexaudio is offline apexaudio  Serbia
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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.
Regards
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Old 7th December 2010, 11:52 AM   #1018
jash2008 is offline jash2008  India
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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, 1102 views)
File Type: pdf SMD B500 bot 1.pdf (59.4 KB, 885 views)
File Type: pdf SMD B500 bot 2.pdf (43.2 KB, 729 views)
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Old 7th December 2010, 12:02 PM   #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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The bird is the word...
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Old 7th December 2010, 01:26 PM   #1020
apexaudio is offline apexaudio  Serbia
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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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