500W PA amplifier with Limiter

[sownel]

Hi mr.apex i build b500 recently good sound clarity,i will try to apex b600 all components are ok,but Bav21 not available in my place any equalent pls? Thank you

 

[apexaudio]

Hi mr.apex i build b500 recently good sound clarity,i will try to apex b600 all components are ok,but Bav21 not available in my place any equalent pls? Thank you

Use BYD33, MUR120...

 

[rohin]

i want to make b500tef with 8 pair or more.i want pcb for this.anyone can help me.there are so many pcb over internet but no one share it only liem poo pcb is available.please some one help me.thanks.

 

[jangkrik]

hi syahrul flease shared pdf file...
regards

 

[rohin]

apex b500 tef

1200va toroidal made by my friend and upgrade by me for apex b 500 tef.some tone for apex op line amp.dear sir is 20000uf cap per rail good for stereo b500 tef with +- 90 vdc ? or i go with 30000uf per rail.i know that more uf always best but i don't want to waste cap.load will be 2 nos of 300w 8 ohm 15 inch top speakers per channel.thanks.

 

[rohin]

dear apex audio,i waiting for your advice.thanks.

 

[fabyo]

FINAL WORK ON B500 AND TEST

https://www.youtube.com/watch?v=c29DJdGc5ns&feature=youtu.be

 

[fabyo]

FINAL WORK ON B500 AND TEST

PURE POWER

 

[thimios]

b600.tef http://www.diyaudio.com/forums/attachment.php?attachmentid=472490&stc=1&d=1426815148[image]

An externally hosted image should be here but it was not working when we last tested it.

[/image]

Nice work!
Can you share the pcb pdf and schematic for this amplifier?

 

[apexaudio]

B600 with smps.

 

[sownel]

Hi apex sir and all i build apex b600 some ocilation heared .dc offset -102mv bias left 363mv right side 643mv my rail is 40-0-40ac 10 amp pls help me thanks to all

 

[sownel]

thanks andrew,this amp is modify by vedmitra sharma and they already gave files to me.

Hi mr rohin pls send me 2ohm amp files
Stanimorin @gmail.com

 

[san200024]

Hi Mr. Mile
Thank you very much for beautiful sound of B500,
GBU
kind regards
San

 

[apexaudio]

Hi Mr. Mile
Thank you very much for beautiful sound of B500,
GBU
kind regards
San

Nice work,
Regards

 

[sandman15th]

work on progres

 

[desertstorm]

heat sink

Who want like this heatsing power BUILT UP with long 40cm and height 12cm...
Just $ 16.5./piece
Position in INDONESIA...

hello my friend can i have 4 pcs. of your heat sink how much is the price if you can send it here in dubai? thanks..

 

[sandman15th]

hello guys and mr. apex.. how much should be min/max the bias of b600 im using 60-0-60 ac,15a... or what parts need to change?? my driver mj340 and mje350 heat fast but still working.. heres the video https://www.youtube.com/watch?v=A0XzxuUzxm4 thanks..=)

 

[sandman15th]

sir is this correct?? i measured 185ma in emitter ? should i increas or decreas this?what parts needed to change? because the output reach 20+ volt ac, the sound is distorted..but below its owkie normal.

 

[TonyTecson]

185 mA is rather high for one emitter...i set it at 50mA initially, then work my way up till the sound at low volume levels are not distorted...

 

[sandman15th]

185 mA is rather high for one emitter...i set it at 50mA initially, then work my way up till the sound at low volume levels are not distorted...

thanks sir i will try again to adjust to lower the bias..=) have a nice day😀