100W Ultimate Fidelity Amplifier

[apexaudio]

PCB from latest SSR protect schematic.
Please check
Sprint layout file attached

Nice pcb, only replace 15k with 4k7 in DC detect circuit.

 

[still4given]

I was wrong. I etched the wrong ones. Too many downloads. 😀 I etched a new pair. I will catch the 4k7 when I populate.

Blessings, Terry

 

[apexaudio]

I was wrong. I etched the wrong ones. Too many downloads. 😀 I etched a new pair. I will catch the 4k7 when I populate.

Blessings, Terry

Protect with transistors DC detect is ok, it work with about +2 and -9V DC voltage. DC detect with triac work with +/-2V.
Regards

 

[gaborbela]

As soon as someone built a prototype and has all the resistor values I plant to build it to.
I need a couple of them. I really do not like the relay type because it need a high quality relay to not to degrade the sound to much.
Thank you Mile sharing with us!!!
Greetings

 

[still4given]

As soon as someone built a prototype and has all the resistor values I plant to build it to.
I need a couple of them. I really do not like the relay type because it need a high quality relay to not to degrade the sound to much.
Thank you Mile sharing with us!!!
Greetings

The circuit actually works with the changes suggested in post #5579. It will trip instantly with +1v5dc on the output. I tested another dc protect unit that I have and it works the same way. +1v5 and -6V to trip. Probably not an issue as 6v won't hurt a speaker.

 

[fachir]

PCB from latest SSR protect schematic.
Please check
Sprint layout file attached

We thank you for the attached file!

 

[subburam50]

hi
i am working on apex 11. i could not get the correct response , i am getting the poor bass response and getting the high hf response. ie i am getting 19 volts at 100 hz and 55 volts at 10k.

i have given 30 volts at low rail and 60 volts at high rail voltage.
please help me to correct my errors

 

[apexaudio]

hi
i am working on apex 11. i could not get the correct response , i am getting the poor bass response and getting the high hf response. ie i am getting 19 volts at 100 hz and 55 volts at 10k.

i have given 30 volts at low rail and 60 volts at high rail voltage.
please help me to correct my errors

You work on HX11, can you post pictures?

 

[vargasmongo3435]

yes me too I have to say thanks c08bm you for share file

Regards
Juan

 

[prasi]

PCB from latest SSR protect schematic.
Please check
Sprint layout file attached

Thanks for the file Mr. C08bm. I will update my layout based on your layout.
Prasi

 

[subburam50]

hi sir

Thank you for your reply sir.
i have used mje350 and mje340 as a pre driver instead of 2sa1407 and 2sc3601.

 

[sonal kunal]

Thank you for your reply sir.
i have used mje350 and mje340 as a pre driver instead of 2sa1407 and 2sc3601.

In schematic there is only one MPSA92 but there are two MPSA92 in your version.

Look at layout done by willy.

Regards
Sonal Kunal

 

[apexaudio]

Thank you for your reply sir.
i have used mje350 and mje340 as a pre driver instead of 2sa1407 and 2sc3601.

Can you post pictures of your amp?

 

[subburam50]

hi

 

[sonal kunal]

subburam50, remove second MPSA92(one with base connected to GND).

And use jumper as on attached photo.

Regards
Sonal Kunal

 

[subburam50]

ok thanks let me check.

 

[thimios]

PCB from latest SSR protect schematic.
Please check
Sprint layout file attached

This file is from a relay protection,can you upload the right file?
Thanks.

 

[prasi]

This file is from a relay protection,can you upload the right file?
Thanks.

Hi,
there is another sheet on the bottom that has the SSR layout.
reg
Prasi

 

[thimios]

Hi,
there is another sheet on the bottom that has the SSR layout.
reg
Prasi

Thans prasi, i see this now.

 

[subburam50]

mr.sonal
i have checked by removing one mpsa92. but the problems remains the same so please help me solve the problem.

100hz-------10volt
1khz--------10 volt
10khz-------25 volt