500W PA amplifier with Limiter

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M

marestiani

Member
Joined 2011
eit said:
H900 and B500 have inverted output phase for useing with B2181 and B181 subs. Speakers in B2181 and B181 are in reverted position for beter cooling.
If you use B2181 and B181 with another amps you must reverted (+) and (-) on speaker terminal or you can turn around speaker in standard position, also if you use H900 and B500 with another speakers you must reverted (+) and (-) on speakers terminals or amps output terminals.
Regards
Apex said this on h900 forum maybe it will you this

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Click to expand...

thanks, my problem happen when i use my friend speaker, i thought the ne 5532 cause this, when i already finish change the ic he took the speaker home, never had a chance to try it again :confused:, maybe its true the speaker is B2181 and B181, i never open it from speaker box
 
B

boss2009

Member
Joined 2009
Power supply board for B500TEF, PCB size 101x160mm

Hello ... Just like to post this edited power supply board for my B500TEF.

My Power supply:

Trafo - Toroid 50-0-50VAC at 20 amps
Capacitors - 10,000uf/63V 8pcs
filter caps at diode - needs suggestion for value
Bleeder resistor at output - need suggestion for value

Hope anyone can help me use proper values for missing parts.

Thanks & Regards
 

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  • POWER SUPPLY BOARD B500TEF size 160 x 101mm.jpg
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B

boss2009

Member
Joined 2009
boss2009 said:
Hello ... Just like to post this edited power supply board for my B500TEF.

My Power supply:

Trafo - Toroid 50-0-50VAC at 20 amps
Capacitors - 10,000uf/63V 8pcs
filter caps at diode - needs suggestion for value
Bleeder resistor at output - need suggestion for value

Hope anyone can help me use proper values for missing parts.

Thanks & Regards
Click to expand...

Please check filter caps at ac side of diode.. I think this is wrong, any suggestion is welcome.. many thanks
 
B

boss2009

Member
Joined 2009
QUOTE=apexaudio;3728163]You need 4x10nF/250V in parallel with diodes in bridge and 4x10k/2W in parallel with caps from midle point to rails.[/QUOTE]

Hi Mr Mile.. many thanks for your quick reply.. Please see attached schematic I also edited based on your original for H900. Please see the resistor placement.. I put only 1 resistor each rail.. Is this ok ? or shall I series the two 10k 2w in each rail.

Many thanks & Regards
 

Attachments

  • B500 TEF PSU.jpg
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  • B500TEF PSU ver 2.jpg
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apexaudio

apexaudio

Member
Joined 2010
boss2009 said:
QUOTE=apexaudio;3728163]You need 4x10nF/250V in parallel with diodes in bridge and 4x10k/2W in parallel with caps from midle point to rails.
Click to expand...

Hi Mr Mile.. many thanks for your quick reply.. Please see attached schematic I also edited based on your original for H900. Please see the resistor placement.. I put only 1 resistor each rail.. Is this ok ? or shall I series the two 10k 2w in each rail.

Many thanks & Regards[/QUOTE]

Connections mising.
 

Attachments

  • B500TEF PSU ver 2.jpg
    B500TEF PSU ver 2.jpg
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B

boss2009

Member
Joined 2009
apexaudio said:
Hi Mr Mile.. many thanks for your quick reply.. Please see attached schematic I also edited based on your original for H900. Please see the resistor placement.. I put only 1 resistor each rail.. Is this ok ? or shall I series the two 10k 2w in each rail.

Many thanks & Regards
Click to expand...

Connections mising.[/QUOTE]

Thanks you very much again Sir Mile for clarification..

Best Regards
 
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