High End 100W Class AB Amplifier

[Sierra]

I found it helpfull to share!

A very nice amplifier, with protection on board!

Technical parameters:
Supply voltage: max. + / - 45V

Output power: max. 120W/4R

Frequency response: 15 to 100 000Hz/-3dB

Harmonic Distortion: 0.1% for 100W/1kHz; 0.011% at 100W/10kHz

Intermodulation distortion: 0.31% at 80W / 80 +7 kHz

Input sensitivity: approx. 0.55 V

Current protection: 2x4A fast fuses

Sensitivity of one-way protection: + /-2V

Delayed connect the speakers: approx. 1.5 sec

Speed during SR: 13V/us

Min. impedance: 4R

PCB dimensions: 11x11cm


I wish to see some intrest into this easy amplifier!!

* I have included ZIP file for all files for high resolution.

 

[erhan739]

yes i think it instead of STK hybird amplifier, it will more durable. Thanks for sharing!

 

[JAKUB_G]

Hello, I am really glad, choosing our amps. But I offer to you the improved amp, which comes from amplifier posted upper.
http://zosilnovace.eu/JPA100.htm
The PCB layout will soon appear on our website.
Enjoy

 

[erhan739]

JAKUB_G, we want see your all other projects to here we too glad, your amps pretty good. And take a look my projects enjoy!

 

[Corvett]

I found it helpfull to share!

A very nice amplifier, with protection on board!

Technical parameters:
Supply voltage: max. + / - 45V

Output power: max. 120W/4R

Frequency response: 15 to 100 000Hz/-3dB

Harmonic Distortion: 0.1% for 100W/1kHz; 0.011% at 100W/10kHz



View attachment 485

100KHz?

Is that true? why do i need the 100KHZ for in audio, the range is 20 ~ 20KHZ

Please explain

 

[JAKUB_G]

Yes It is true. It doesn't mean that when you don't listen the ultrasonic frequencies that you don't perceive it. In general, when band width is wider, slew rate grows too...
It bounce in the elocution of high band.

 

[radio]

Hi JAKUB_G!
Jacub, amplifier is very good!
I want to ask a few questions:
I have the power supply UCC = + / -36Vdc/400W. Can I use this power supply for the amplifier or your need some changes?
Your turtorijal (you topic) for this amplifier can be eaten in English or Serbian?
Where is schematic power supply for this amplifier?
Where entry is associated AC (see scheme)?
Is you have to give TOP PCB combined with the last part (for example, see TOP_PARTS)?
Tanks and cheers

 

[radio]

Jakub, and I add this question and more will not bother!
Is this amplifier can be processed with the output MOSFETs IRFP240/IRFP9240?
Thanks and cheers

 

[stewin]

hi sierra is this an upgrade of this amp http://www.diysmps.com/forums/showthread.php?123-The-Best-Amplifier-I-have-ever-heard