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Old 24th December 2010, 04:01 PM   #1101
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marry Christmas to all my DIR,s....
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Old 24th December 2010, 04:03 PM   #1102
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marry Christmas to all DIY,s....
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Old 25th December 2010, 01:57 AM   #1103
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Quote:
Originally Posted by andrewlebon View Post
hi apex audio
greetings want to ask you that can you please tell me if i am
wrong
1 pin 7 of ic TLO72 should go to base of transitor BF422 but 5 no pin is going to base
2 from 5 no pin 10K resitor should be ground
3 1 no pin of ic TLO 72 should go to base of transistor BF423 but 3 no pin is going to base
4 3 no pin should be ground via 10 K RESITOR
PLEASE TELL ME IF I AM CORRECT FOLLOWING SCHEMATIC
hopimg you can help me
thanking you
andrew lebon
hello mate,
which tlo step lay out are you using?
the corrected step lay out is in post923 and 928
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Old 25th December 2010, 02:05 AM   #1104
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apex,
in the picture you post the i.c. mounted not as the last corrected lau out,.so the step this picture is not yet tested?
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File Type: jpg apex.JPG (185.7 KB, 1190 views)
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Old 25th December 2010, 02:51 AM   #1105
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hi engel dela pena
greetings check schematic against pcb component layout
after correcting mistakes on negative side negative out voltage is correct
will do positive side now and reply
thanking you
andrew lebon

MERRY CHRISTMAS TO ALL FOLKS ON DIY
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Old 25th December 2010, 05:26 AM   #1106
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my question is is it b500 need step driver? without step driver any effect?
which speaker protection is suitable for b500?
pls post the b500 correct pcb layout in pdf and speaker protection.
thank u for diy members.
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Old 25th December 2010, 05:51 AM   #1107
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Quote:
Originally Posted by nazirdigi View Post
my question is is it b500 need step driver? without step driver any effect?
which speaker protection is suitable for b500?
pls post the b500 correct pcb layout in pdf and speaker protection.
thank u for diy members.
B500 can run without step driver ,,step driver is just an upgrade so b500 become h class,,about protect circuit its on the thread and i use it for my b500 and h900 works great
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Old 25th December 2010, 06:06 AM   #1108
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There are lots of protect circuit in this forum . so which one u use? if u can post the pcb layout it is very usefull.
thank u for your reply.
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Old 25th December 2010, 06:16 AM   #1109
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Default protect circuit APEX

Quote:
Originally Posted by nazirdigi View Post
There are lots of protect circuit in this forum . so which one u use? if u can post the pcb layout it is very usefull.
thank u for your reply.
APEX protection circuit can be use in any amps
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File Type: jpg APEX H900 Protect Component layout.jpg (664.6 KB, 1085 views)
File Type: jpg DSC_0011.jpg (365.2 KB, 881 views)
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Old 25th December 2010, 06:22 AM   #1110
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thank u for the spaeker protection pcb . but i read in this thread this is for h900 not suitable for b500. is it ok for b500?
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