Group Buy 2KW Class-H Amplifier

[Junie]

let me know as well if PCB's are still available, going to Dubai. Many thanks.

 

[AutoclassA]

let me know as well if PCB's are still available, going to Dubai. Many thanks.

Hello

To be clear to all, I have 24 PCBs left, I need some one to buy them and sell them to the group.

The one who buy them all will get lower price.

I can ship them as soon as some one confirms this

Thanks

 

[johnyh]

Hello
Do you have any of this PCBs ?
Thanks

 

[mj777]

Class H 2KW boards

Hello Guys, I have just received the pcb's for this powerful amplifier, I'm planning to build it as soon as possible. Just want to inform anyone who is interested to build this amp, I have 18 pcb's extra. the cost is 24 dollars each board plus shipping, a minimum of two boards per order(stereo amp).
I attached the pictures of the boards for proof.

regards,
mj777

 

[meanman64]

mj777,
I'll get back to you I had organized a groupsbuy at a dutch forum and I gonna ask if they are still interested in the boards.Persanly I want to take an option fot two boards if it's OK by you

 

[mj777]

No problem Sir meanman64, I will reserve for you two boards if you are really interested, since this is a first come first serve basis because of a limited numbers of boards.
regards,
mj777

 

[AutoclassA]

Hi mj777


I would like to remind all, that

This is a DIY project to learn building class-H Amplifier, and its not designed for commercial use, and you may notice that some circuits needs improvements in the amplifier.
But, the amplifier is fully working, only issue I noticed that a Specific 4N25 chip MUST be used in the CLIP circuit.

Thats the only issue out there, and the TURN on delay circuit may need to adjust some resistor value depends on transistors you are using.

All notes of construction, help, support, will ONLY be discussed here at (www.diysmps.com)

We are not going to discuss, or post ANY information's at (www.diyaudio.com) its just that simple.

Any one buy the PCBs will get COMPLETE support here and at any other forums except (www.diyaudio.com)

Schematics will be sent ONLY to those who buy the PCBs.



Thanks for all

 

[mj777]

Well noted Sir AutoclassA.
Regards,

mj777

 

[AutoclassA]

Well noted Sir AutoclassA.
Regards,

mj777

Thanks


we welcome all members from diyaudio here, but I think diyaudio is not going be a good place for discussion.

 

[khalsa]

i have some experience in this amp with sir microsim i am very happy

 

[mj777]

pcb w/ most of the components

I have started to populate the pcb and it really looks good. pictures attached

 

[Junie]

here's what i've made so far, it's a long way to go.

 

[mariano]

I will try next month to buy the pcb.

 

[Malmir]

Hello AutoclassA.
In Your "reference" pdf i guess there is something missing ?
Between D1 and QN1 there are 2 resistors, shouldn't the mid point be connected to Q12 and equal for negative part ?
Sincerely
Klavs.

 

[mj777]

Hello AutoclassA.
In Your "reference" pdf i guess there is something missing ?
Between D1 and QN1 there are 2 resistors, shouldn't the mid point be connected to Q12 and equal for negative part ?
Sincerely
Klavs.

Dear Klavs,

Those are connected as what you have describe, you just can not see it clearly because the reference is in a black n white copy, but in the colored schematic with values it is connected.

regards,
mj777

 

[mj777]

my updates

this is my slow progress in building the amp because of busy work schedule, output transistors and heat sink afterwards....

 

[mj777]

amp updates

I am now making some test on my completed amplifier, see pictures attached. it is really a good amp, sound is really clear and loud, giving a punchy bass and clear treble.

regards,

mj777

 

[mj777]

amp updates

The video of my testing:

[video=youtube;5eN6pbfsNm0]http://www.youtube.com/watch?v=5eN6pbfsNm0&feature=youtu.be[/video]



regards,

mj777

 

[meanman64]

The video of my testing:

[video=youtube;5eN6pbfsNm0]http://www.youtube.com/watch?v=5eN6pbfsNm0&feature=youtu.be[/video]



regards,

mj777

Hi mj777,
Very nice test but your speaker can't cope the power.Like te sound ,nice strong bass and treble.
One question do you still have a set of boards for me?

 

[mj777]

Thanks for the comment Sir Meanman64, definitely my speaker won't stand the power of this amplifier, a PA amplifier with a clear and detailed sound it's best for big speakers. Yes Sir I still have a pair of board for you if you want.

regards,
Marjohn