900W H-class PA Amp with Limiter

[apexaudio]

I will be busy whole summer, sorry for answers, I try to help, but I hope from other people to help begginers also.
Regards

 

[electra_ina]

Psu h900

Hi..Apex...my friends ask to me..for PSU H900..Can he used two transformator with seri in secondary tap 57,2v-26,7v-0-0-26,7v-57,2v..0-0 is CT tap.
So, because I no background technic electronica..I hope U will explain to me.
Pozdrav..

Hi..Apex..I'm sorry to ask againt this question...How effect with this supply fo H900??
Pozdrav..

 

[apexaudio]

That transformers can be used for H900, what is power of transformers? If power is too low it can be used in dual mono configuration or in parallel.
Regards

 

[eesbiboi]

I will be busy whole summer, sorry for answers, I try to help, but I hope from other people to help begginers also.
Regards

ok sir...you really are very busy this summer...goodluck with what you are about to do this summer...😀😀😀

 

[apexaudio]

ok sir...you really are very busy this summer...goodluck with what you are about to do this summer...😀😀😀

Thank you, I don't want to use forum for advertising or promotion of my business.
Regards

 

[electra_ina]

That transformers can be used for H900, what is power of transformers? If power is too low it can be used in dual mono configuration or in parallel.
Regards

I mean that each trafo is 8A with secondary tap 0-26,7v-57,2v. And two trafo with applied seri on secondary tap.
Pozdrav.

 

[engel dela pena]

Thank you, I don't want to use forum for advertising or promotion of my business.
Regards

we look forward on your site eu.net
thanks for sharing experiences and ideas

 

[apexaudio]

I mean that each trafo is 8A with secondary tap 0-26,7v-57,2v. And two trafo with applied seri on secondary tap.
Pozdrav.

You can used transformers as you suggest with 0-0 center tap.
Regards

 

[electra_ina]

You can used transformers as you suggest with 0-0 center tap.
Regards

Thanks Apex....Now I know that,,,,
Puzdrav

 

[rhodrich]

@ esobie

where did you order your tranformer? how much? how many days work?

 

[eesbiboi]

transformer

@ esobie

where did you order your tranformer? how much? how many days work?

my friend made that xformer for me...
by that time he made it for a day...
just pm me if you want to...
or send me message to my facebook account
sound_bac@yahoo.com

 

[electra_ina]

You can used transformers as you suggest with 0-0 center tap.
Regards

With this supply dual trafo 8A CT-26,7vac-57,2vac, how much power will be product from H900??

Pozdrav,.

 

[apexaudio]

With this supply dual trafo 8A CT-26,7vac-57,2vac, how much power will be product from H900??

Pozdrav,.

500W/4R
Pozdrav

 

[Tube Pro]

power up a bit

yes i am....😀

I install the zobels right at the speaker output terminals, you can use anywhere from 2.2 to 10 ohms....the thing is, carbon comps can be used here and if you are palying your amp loud, you better get several 2 watters in parallel if you want those resistors to last....

Hello Master Tony, Apex, gurus,
🙂
As I need to boost up this circuit a bit to 600w at 8 ohms, (as per Apex, this delivers 500w @ 8 ohms), what's the simplest way to modify it?
increase voltage?
add power outputs?
...?

TIA & Regards,

Joel

 

[apexaudio]

Hello Master Tony, Apex, gurus,
🙂
As I need to boost up this circuit a bit to 600w at 8 ohms, (as per Apex, this delivers 500w @ 8 ohms), what's the simplest way to modify it?
increase voltage?
add power outputs?
...?

TIA & Regards,

Joel

Increase rail voltage to 120v-60v-0-60v-120v, and you have 650w at 8 ohms, but 4 ohms will be minimum speaker impedance. With 110v-55v-0-55v-110v rail voltage you can run 3x8ohms (2,7ohms) speakers in parallel per channel.
Regards

 

[electra_ina]

500W/4R
Pozdrav

@Apex..Thanks alot.😉
Regards

 

[Tube Pro]

Secondary Voltages

Increase rail voltage to 120v-60v-0-60v-120v, and you have 650w at 8 ohms, but 4 ohms will be minimum speaker impedance. With 110v-55v-0-55v-110v rail voltage you can run 3x8ohms (2,7ohms) speakers in parallel per channel.
Regards

Ok.
So what's the secondary voltages then?
87-45-0-45-87 ?
VA = ?

Thanks.

 

[apexaudio]

Ok.
So what's the secondary voltages then?
87-45-0-45-87 ?
VA = ?

Thanks.

84-42-0-42-84, 2500VA
Regards

 

[apexaudio]

This pcb design by 'coolet' use TL071 for step driver.
Regards

 

[Tube Pro]

Ok.
So what's the secondary voltages then?
87-45-0-45-87 ?
VA = ?

Thanks.

Thanks Mile