Electro Voice Stereo Amplifier PA2450 User Manual

PA2450L  
Two-Channel  
PowerAmplifier  
Key Features:  
2 x 450W at 4 Ohms  
2 U Rack Space Chassis  
Rear Level Controls  
Bridge Mode Operation Provides  
1 x 900W at 8 Ohms  
Complete Protection Package  
Selectable 50Hz or 300Hz Hi-Pass Filter for  
each Channel  
Technical Specifications:  
Number of Channels  
2
PhoenixType Inputs  
Load Impedance  
8 Ohm  
220W  
4 Ohm  
450W  
Phoenix Type Outputs  
Rated Output Power (*Rated Load)  
THD<1%, 1kHz  
High Efficiency Circuit Design  
Front Panel Power On/Off  
Rated Output Power (*Rated Load)  
THD<0.2%, 20Hz…20kHz  
200W  
400W  
Slew Rate at 1kHz  
28V/µs  
Frequency Response, -1dB, Ref. 1kHz  
<10Hz - 40kHz  
>250  
Damping factor, at 100Hz / 1kHz,  
4 Ohm  
General Description:  
Power Bandwidth THD=1%, Ref.  
1kHz, Half Power  
>10Hz - >50kHz  
>20kOhm  
The Electro-Voice® PA2450L is from the PA series of  
professional commercial audio amplifiers. The direct path  
airflow design reduces the heat buildup significantly and  
allows for more amplifier channels and output power in  
slim two rack space chassis. The audio performance of the  
PA2450L is superior and fulfills the requirements in many  
demanding long term applications from sound  
reinforcement, paging or life safety installations.  
Input Impedance, 20Hz ... 20kHz,  
Balanced  
Signal-to-Noise Ratio, A-Weighted  
104 dB  
Input Sensitivity at Rated Output  
Power or Voltage, 1kHz  
0dBu (775mV)  
THD at rated output power,  
MBW=80kHz, 1kHz  
<0.1%  
IMD-SMPTE, 60Hz, 7kHz  
DIM30, 3.15kHz, 15kHz  
<0.1%  
<0.1%  
The PA2450L features many of the same comprehensive  
protection circuits typical in EV amplifiers. Complete  
protection is provided for high temperature, audio limiters,  
power up delay and peak current limiters. In addition to the  
rated output power, the PA2450L provides excellent  
headroom for a wide dynamic range on music signals. The  
onboard dynamic limiter ensures that the output clipping of  
the PA2450L will not will not generate excessive distortion.  
The amplifier channels can be bridged for more power  
flexibility.  
Crosstalk, Ref. 1kHz, at 10% Rated  
Output Power  
<-75 dB  
Power Requirements  
120V or 230V, 50Hz -  
60Hz  
Protection  
Audio Limiters  
High Temperature  
Peak Current Limiters  
Turn-On Delay  
Cooling  
Front-to-Rear  
Marked level controls on the rear panel provide hidden  
reliable level adjustments for each channel. Front panel  
LEDs indicate signal present, 0 dB, and limit. Phoenix type  
connectors for inputs and outputs provide an easy rack wiring.  
Dimensions (W x H x D), mm 483 x 88 x 406mm (2Ru)  
19" x 3.5" x 16"  
Weight  
16.5kg (36.34lbs)  
Low Impedance Outputs:  
-
-
Min. Rated Load for Single Channel Operation is 4 Ohms. 2 Ohm Load is Not Recommended.  
Min. Rated Load for Bridged Operation is 8 Ohms. 4 Ohm Load is Not Recommended.  
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