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|22nd March 2011, 09:51 PM||#1|
Final test: Module Leco vs Crown Powertech Series Amplifier
I decided to make an comparative test between mine AB class module amplifier vs. Crown Powertech Series Amplifier.
Dropping power supply to around +/- 77Vdc, to achieve around 500 Watts on mine module.
Both receiving same signal at inputs,both with 4 ohm dummy load on outputs , both calibrated for same tension on output at 1000Hz, means both are equal output power for 1000Hz, so input controller knob, adjust equally both amplifiers, any difference could very easy observablle, so any difference between them are shown.
To mentionate, Crown amplifier is with patented IOC Led (Input output Comparator) wich monitors any distortion , equally or greater than 0.05%, in entire amplifier bandthwidth
WAITING FOR COMMENTS.
Leco AB Module vs Crown Powertech Series Intro
YouTube - Leco AB Module vs Crown Powertech Series Intro.MOV
30 Hz sinusoidal, max output
YouTube - Leco vs Crown Part 1.MOV
5Hz-30Hz sinusoidal, triangular, squarewave
YouTube - Leco vs Crown Part 2.MOV
30Hz-20Khz-8Hz, sinusoidal, triangular, squarewave
YouTube - Leco vs Crown Part 3.MOV
And here some tests with module equipped witg 5 paris of 2SA 2SA Toshiba's output devices , supplied at +/- 100Vdc
Dummy load cooling down.
YouTube - Rezistenta la racire
If anyone could calculate Slew Rate of mine module, regarding pictures above at, supplied at +/- 100Vdc, will be very appreciate!
Also any comment will be appreciate too!
|17th June 2013, 12:06 AM||#2|
Join Date: Jan 2013
plish share layout pcb
|29th October 2013, 10:44 PM||#4|
W8 to see you results, on dummy load.
Also I want to see tests for 10Khz squarewave, and surely, damping factor for your clone!
Good luck, soon I will present, version 2 of Leco amplifier, with some surprises!
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