500W PA amplifier with Limiter

[apexaudio]

greating sir, how max rail suply for ax14 protect... can i add for b500tef ?
regards

NE555 protect use separate 12V suply and can be use with any amp.
Regards

 

[Riff]

NE555 protect use separate 12V suply and can be use with any amp.
Regards

no sir... protect what i mean is from ax14p, any change value for 80 to 100vdc ?
Regards

 

[sandman15th]

thanks apex(willy b.cerna),wiljj78,jaagut,desert storm and the rest of DIY community, heres my b500 TEF, =)
http://imageshack.us/a/img407/507/58pb.jpg
http://imageshack.us/a/img22/9858/k7fm.jpg
http://imageshack.us/a/img443/7776/ptwr.jpg

my speaker
http://imageshack.us/a/img34/5821/3m48.JPG
http://imageshack.us/a/img844/2766/3ig5.jpg

additional question guys =) how can i know if my speaker protect are working???is this correct? i tried to put 15volts ac on protect the relay cut off. and led glows. but why my fan always in high speed,by the way im using 15-0-15 instead of 18-0-18 .thanks and regards...=)

 

[fm906]

Thanks for sharing,this AMP is so simple ,can it be output enough 500W at AC40VX2 ？

 

[fm906]

HI apex,is it NE5532 can be instead with TL072 ? I like 072 than 5532 in PA and PREAMP

 

[apexaudio]

HI apex,is it NE5532 can be instead with TL072 ? I like 072 than 5532 in PA and PREAMP

TL072 can be use, and I suggest to use it in B500 and H900. IC in B500 and H900 is only for DC servo, for AC it's only bufer like in Quad amps.
Regards

 

[fm906]

TL072 can be use, and I suggest to use it in B500 and H900. IC in B500 and H900 is only for DC servo, for AC it's only bufer like in Quad amps.
Regards

thank you sir,which IC or others would be the better in this PA ? did you had contrasts it ?

 

[ahmadfay]

I used TL072 in my B500 with DC offset is 2,5 mV, when i used NE5532, DC Offset is 10 mV.
Sorry my bad English

 

[vargasmongo3435]

hi apex sir , here is the video of b500 tef with test.

YouTube

YouTube

Hello sir will you make this video life I would like to see I mean if you don't mind, it said "private" 🙂

Regards
Juan

 

[boss2009]

MY B500 TEF, ON GOING

Hi.. this is my on going B500 TEF based on Liem Poo pcb.
Hope anyone can check also for any errors. My Power supply is 2x50Vac @20amps toroid. Ne5532 is replaced with NJM2068.


Regards

 

[apexaudio]

Hi.. this is my on going B500 TEF based on Liem Poo pcb.
Hope anyone can check also for any errors. My Power supply is 2x50Vac @20amps toroid. Ne5532 is replaced with NJM2068.


Regards

Nice work,

Regards

 

[vdij]

Hi.. this is my on going B500 TEF based on Liem Poo pcb.

a link , please

 

[eit]

Sir miles what is possible trouble with my b500 my dc offset is 50v

Sent from my MyPhone A919 Duo using Tapatalk

 

[boss2009]

a link , please

Hello vdij... please check post number 2421

http://www.diyaudio.com/forums/solid-state/164208-500w-pa-amplifier-limiter-243.html


Good luck in your DIY 🙂

 

[boss2009]

Nice work,

Regards

Thank Sir Mile for compliment...

May i ask what is the maximum VAC to be use if i will use MJL21193/94 or MJL4281/MJL4302.. and what components need to change like R24 & R25 in the original circuit.

Many thanks & Regards

 

[vdij]

Hello vdij... please check post number 2421

thank you, boss2009.

 

[sandman15th]

finally i finish my diy amp b500 thanks apex

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

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

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

 

[apexaudio]

Nice work, is sound good?
Regards

 

[vdij]

my diy amp b500

very good

 

[vargasmongo3435]

ohoooo yes nice

best regards
Juan