2*1500W amp for sale

[Pafi]

(Is it allowed to advertise here? I have completely run out of money. )

It is a dual mono 3 level Class D power amp with 50 Hz toroidal transformators. Has simmetrical XLR inputs, it produces 1500 W unclipped sinus power at 2,66 load impedance.

Amp:

full bridge, 8 pcs of FDP2552 in each chanel (150V 36mOhm), seperate common mode and differential mode output filter chokes (cold operation), overcurrent sensing depending on chip temperature (approx. 90 A at cold FETs, 60 A at 100 celsius chip), auto-reset with ~1s period. Max output voltage: Vdd-2V.

Bandwidth: 15Hz-30kHz (+0,5/-3dB), S/N aprox. 110 dB (based on hearing tests), distortion: tbd. Effective carrier freq: 370 kHz. Residual carrier: ~300 mVeff at no drive, ~1,5V at half drive.

Supply:
soft-start, 1 ohm primer impedance trafo with 2*46VAC (128VDC) output, summa 19000 uF 200 V Nippon Chemicon elkos.

+ small signal supplies stabilised, power on sequence ensured by logic.

Photos:
http://www.hszk.bme.hu/~sp215/PWM_2kW/front2.jpg
http://www.hszk.bme.hu/~sp215/PWM_2kW/inside.jpg
http://www.hszk.bme.hu/~sp215/PWM_2kW/LEDs.jpg

Output power and waveform:
http://www.hszk.bme.hu/~sp215/PWM_2kW/354.jpg
http://www.hszk.bme.hu/~sp215/PWM_2kW/350.jpg

Weight: 21 kg, height: 88 mm.

Location: Budapest, Hungary

If you have comments, questions, price-advising, please write to spafi(at)aramszu.net!

 

[motherone]

This should probably go in the trading post area.. Sounds like an interesting amp! Hope you're able to sell it.

 

[Pafi]

Thanks!

"trading post area"

I didn't know where to search for, but now I find it!

 

[Gyula]

És mégis mennyibe kerülne?

 

[Pafi]

I think of 600 Euro, but go to "Trading Post" with further questions please! Neked odaadom 140 000 Ft-ért is! 🙂

 

[Gyula]

Did you make distortion analisys and load test? How much is the phase shift and what is the frequency response? What is the switching frequency?

Thanks,
Gyula

 

[Gyula]

Forgiveness! I've just red the text above. Nice one!

Gyula

 

[pirinyo]

szép darab!🙂

 

[Cal Weldon]

This should probably go in the trading post area.

Done.

 

[protech1104]

Good work pafi. You dont have any problems with mosfet in parallel? Inductance mosfet in parallel

 

[merlin el mago]

Your links doesn't work.

(Is it allowed to advertise here? I have completely run out of money. )

It is a dual mono 3 level Class D power amp with 50 Hz toroidal transformators. Has simmetrical XLR inputs, it produces 1500 W unclipped sinus power at 2,66 load impedance.

Amp:

full bridge, 8 pcs of FDP2552 in each chanel (150V 36mOhm), seperate common mode and differential mode output filter chokes (cold operation), overcurrent sensing depending on chip temperature (approx. 90 A at cold FETs, 60 A at 100 celsius chip), auto-reset with ~1s period. Max output voltage: Vdd-2V.

Bandwidth: 15Hz-30kHz (+0,5/-3dB), S/N aprox. 110 dB (based on hearing tests), distortion: tbd. Effective carrier freq: 370 kHz. Residual carrier: ~300 mVeff at no drive, ~1,5V at half drive.

Supply:
soft-start, 1 ohm primer impedance trafo with 2*46VAC (128VDC) output, summa 19000 uF 200 V Nippon Chemicon elkos.

+ small signal supplies stabilised, power on sequence ensured by logic.

Photos:
http://www.hszk.bme.hu/~sp215/PWM_2kW/front2.jpg
http://www.hszk.bme.hu/~sp215/PWM_2kW/inside.jpg
http://www.hszk.bme.hu/~sp215/PWM_2kW/LEDs.jpg

Output power and waveform:
http://www.hszk.bme.hu/~sp215/PWM_2kW/354.jpg
http://www.hszk.bme.hu/~sp215/PWM_2kW/350.jpg

Weight: 21 kg, height: 88 mm.

Location: Budapest, Hungary

If you have comments, questions, price-advising, please write to spafi(at)aramszu.net!

 

[chris661]

Hardly surprising - they're 11 years old.

Chris