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U2 Series Dual Channel Amplifiers

 
Features
 2U (3.5" high) 19" Rack Mountable Chassis

 Touring or fixed installation applications.

 Quicklock connecting SpeakonTM speaker connectors.

 Gold-plated XLR and 1/4" TRS Phonejacks input connectors.

 Powerful, high current, low noise toroidal transformer.

 Quiet, isolated cooling system.

 Symmetrical, modularized design for easy transportation and quick service.

 Front mounted, detent volume controls.

 LED display for signal level (-10dB, -3dB, clip) and speaker protect for each channel.

 Stereo/Parallel and Bridge Mode operation.
 

 
The ProPower Audio U2 Series feature a highly dynamic, ultra-low distortion pre-driver circuit. The discrete complementary-symmetrical push-pull cascade amplifier circuit of this type is only found on high end amplifier models.
Direct coupled NFB and DC servo easily handle subwoofers. A stable direct couple negative feedback with DC servo circuitry is applied for the best ultra-low frequency performance.
 
Specifications
 

Condition

U2750

U2550

U2350

U2250

Output(rms)

4 ohm both Ch.

750W x 2

550W x 2

350W x 2

250W x 2

Output(rms)

8 ohm both Ch.

450W x 2

350W x 2

250W x 2

150W x 2

Output(rms)

8 ohm bridged

1500W x 1

1100W x 1

700W x 1

500W x 1

Output(program)

4 ohm both Ch.

1000W x 2

700W x 2

450W x 2

300W x 2

Output(program)

8 ohm both Ch.

600W x 2

450W x 2

300W x 2

200W x 2

Distortion

At rated power

0.025%

Freq. response

At rated power

20Hz~20kHz +0, -0.5dB

Freq. bandwidth

At rated power

10Hz~50kHz +0, -3 dB

Input sensitivity

At rated power

0.775 Vrms

IM distortion

60Hz and 7kHz

0.03%

Input impedance

Each leg to GND

10k ohm

Damping factor

1 kHz@8 ohm

300

Crosstalk

 

-80 dB

Noise

At rated power

-100 dB

Slew rate

 

80V/uS

70V/uS

50V/uS

40V/uS

Voltage gain

 

35dB

34dB

32 dB

31dB

Power supply

 

1800VA

1400VA

800VA

600VA

Max current draw

AC115V(230V)

20(10)A

15(8)A

10(5)A

5(3)A

I/O connector

 

Speakon2, barrier strip1, XLR2

Status indicator

 

-10dB, -3dB, Clip, Protect.

Controls

 

2 Level controls, Bridged/Stereo/Parallel, GND/Lift

Protection

 

Turn-on, Short, DC, Over temperature

Cooling

 

Two variable speed fans

One fan

Dimension

2U Rack

3 1/2"(H) * 19"(W)* 15"(D)

Weight

lbs (kg)

40 (18)

35 (16)

30 (14)

26 (12)
 
 All specifications subject to change without prior notice
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