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Old 28th November 2012, 08:10 PM   #2331
wiljj78 is offline wiljj78  Philippines
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Default My APEX H900 Ver.2

I would like to build APEX H900 Ver.2

Thank you Mr. Mile for sharing this class H amp...

Regards,
Wiljj78
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File Type: jpg APEX H900 V2.1 Blue-1.jpg (492.5 KB, 930 views)
File Type: jpg APEX H900 V2.1 Green-1.JPG (935.8 KB, 758 views)
File Type: jpg APEX H900 V2.1 Red-1.jpg (478.0 KB, 604 views)
File Type: jpg APEX H900 Ver.2_0000.jpg (770.1 KB, 641 views)
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Old 29th November 2012, 12:16 AM   #2332
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Default HELLO

Driver stage on H900 work with +/-120V DC, only output stage work with /-60V DC and step to +/-120V DC in peaks.
Regards

Hi Apexaudio
greetings my mistake can output stage be modified to 70 - 75
volts dc want to try with TEF its still my favourite amp
warm regards
andrew lebon
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Old 29th November 2012, 06:04 AM   #2333
rizqi is offline rizqi  Indonesia
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Hello sir mile, Iwould build an amp for home teather. Amps are the masters recommend?can I use H900 for main sytem.? Do you have recomendationsfor me?

Regards
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Last edited by rizqi; 29th November 2012 at 06:17 AM.
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Old 29th November 2012, 06:29 AM   #2334
rizqi is offline rizqi  Indonesia
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Quote:
Originally Posted by wiljj78 View Post
I would like to build APEX H900 Ver.2

Thank you Mr. Mile for sharing this class H amp...

Regards,
Wiljj78
Nice design sir....
Would u shared me with sprint layout ver.?

Thanks n regards...
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Old 29th November 2012, 06:47 AM   #2335
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Quote:
Originally Posted by rizqi View Post
Nice design sir....
Would u shared me with sprint layout ver.?

Thanks n regards...
I do not use Sprint layout software.
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Old 30th November 2012, 10:26 AM   #2336
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Quote:
Originally Posted by DAMANHURI View Post
many thanks to the APEX

I tried to make a video to share.
regards

APEX AUDIO PROTECTOR - YouTube
Nice work, I suggest to warm up TIP31C to test high speed fan and thernal protect, also you can connect AC to PRO input and test overload protect (must be power off reset).
Regards
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Old 30th November 2012, 12:15 PM   #2337
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Oops.. my bad..I just happened to push the drivers with a bit more bass and the coils got toasted... I also forgot that my traffo was over sized and did not use apex protect .
Apexaudio or Andrew T or someone could please add a 50Hz low cut filter to the Amp input please .. It can be a little upgrade to the amp..
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Old 1st December 2012, 03:05 AM   #2338
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Quote:
Originally Posted by apexaudio View Post
Nice work, I suggest to warm up TIP31C to test high speed fan and thernal protect, also you can connect AC to PRO input and test overload protect (must be power off reset).
Regards
I've tried to use Solder TIP31C transistor to heat and measure the voltage coming out in the Fan and the result output Voltage grow up, but I have not found a way to determine the point of PRO (Short Protection) to work without having to use the Power Amp.
regards
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Old 1st December 2012, 05:14 AM   #2339
wiljj78 is offline wiljj78  Philippines
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Hello Damanhuri,

Try to jump 1 of your AC line from protect AC supply to pro terminal that should deactivate the relay.

regards,
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Old 1st December 2012, 05:20 AM   #2340
wiljj78 is offline wiljj78  Philippines
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Quote:
Originally Posted by rizqi View Post
Nice design sir....
Would u shared me with sprint layout ver.?

Thanks n regards...
Hello Rizqi,

Thanks.. This design have not been tested yet i'm still trying to find some error before i etch, but you can also review and let me know if you found any mistake so i can correct the error.

Send me your email add so i can forward you the sprint layout file.

Regards,
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