Electro-Voice PA1250T User manual

The PA series of compact commercial rack mount power amplifiers are
designed for demanding sound reinforcement, background music/paging
and public address system installations where long term reliability and flex-
ibility is the ticket. These units are exceptional values, loaded with features
and are easy to install in a variety of system designs. The models in the PA
series range from 160 to 450 watts of power per channel in a compact
2RU package.
All models have a variety of features which enables them to be cus-
tomized to a wide range of demanding commercial sound and audio
reinforcement applications. The PA1250T, PA2250T and PA2400T all
provide 70/100V output capability using low distortion output trans-
formers for wide bandwidth and minimal saturation.
Compact and Easy To Install
The input connectors are a 3pin phoenix style which provide balanced audio.
The speaker outputs also feature convenient phoenix style quick disconnect
terminals to facilitate pre-wiring of the installation. Built in rack mount ears
and rear rack supports provide secure and convenient mounting.
Complete Protection Package
Acomprehensive 4 way protection package in every PA series amplifier helps protect the amplifier and speaker for
reliable long term performance. The package provides complete protection for excessive temperature, audio limiters,
power up delay and peak current limiters. All PA series models provide excellent headroom for a wide dynamic range
on music signals. The onboard dynamic limiter protects the amplifier and speaker from dangerous transients.
All the PA amplifier models feature a low distortion amplifier design which can be bridged for more power flexibility
in multi channel models. The physical chassis of the PA series is also designed for reliability. Ample internal cooling
capacity ensures reliable operation. The PA series runs cool and stable with the direct flow thru chassis layout. The
multistage cooling fan runs exceptionally quiet in all modes.

All PA models feature:
• Balanced phoenix style input connectors –
makes installation easy.
• A phoenix style connector block for all
output modes.
• Models available from 160 to 450 watts
per channel into 4 ohms or 70/100V.
• Bridge mode operation on all multi channel
models provide power flexibility.
• Switch selectable hi-pass filter at either
50Hz or 300Hz meets any installation
requirement.
• Independent rear panel level controls
provided for each channel
• All models provide multi-voltage operation
from 110-240vac.
•Integrated “rack ears” allow for rack mounting
without additional accessories.
PA2450L PA4150L PA2400T PA2250T PA1250T
Number of Channels 2 4 2 2 1
Load Impedance 8ohm 4ohm 8ohm 4ohm 8ohm 4ohm 100V 70V 8ohm 4ohm 100V 70V 100V 70V
Rated output power
(*rated load)
THD<1%, 1kHz
220W 450W 100W 160W 215W 430W 430W 430W 135W 270W 270W 270W 270W 270W
Rated output power
(*rated load)
THD<0.2%,
20Hz – 20kHz
200W 400W 75W 150W 200W 400W 400W 400W 125W 250W 250W 250W 250W 250W
Slew rate at 1kHz
V/µs 28 16 25 65 46 18 61 41 61 41
Frequency response -
1dB, ref. 1kHz <10Hz -40kHz <10Hz -40kHz 65Hz -40kHz 65Hz – 20kHz 65Hz – 40kHz 65Hz – 20kHz 65Hz – 20kHz
Damping factor @
100Hz / 1kHz, 4ohm >250 >250 >250 N/A >250 N/A N/A
Power bandwith
THD=1%, ref. 1kHz,
half power
<10Hz –
>50kHz
<10Hz –
>50kHz 45Hz … >20kHz 45Hz … >20kHz 45Hz … >20kHz
Input impedance
20Hz – 20kHz,
balanced
>20kohm >20kohm >20kohm >20kohm >20kohm
Signal to noise ratio
A-weighted 104dB 100dB 103dB 103dB 103dB
Input sensitivity @
rated output power
or voltage, 1kHz
0dBu (775mV)
THD @ rated output
power MBW=80kHz,
1kHz
<0.1%
IMD-SMPTE
60Hz, 7kHz <0.1%
DIM30
3.15kHz, 15kHz <0.1%
Crosstalk ref.
1kHz, @ 10% rated
output power
<-75dB
Power requirements 120V or 230 V, 50Hz -60Hz
Protection Audio limiters, high temperature, peak current limiters, turn-on delay
Cooling Front-to-rear
Dimensions
WxHxD,In. (mm) 19.0 (483) x 3.5 (88) x 16.0 (406)
Weight 36.34lbs
(16.5kg)
39.65lbs
(18kg) 57.27lbs (26kg) 51.76lbs (23.5kg) 36.34lbs (16.5kg)
PA4150 Rear Panel Shown
Americas
Telex Communications Inc.
12000 Portland Ave South,
Burnsville, MN 55337, USA
USA—Phone: [phone]
Fax: [phone]
Canada—Phone: [phone]
Fax: [phone]
Latin America—Phone: [phone]
Fax: [phone]
Europe, Africa & Middle-East
Germany: EVI Audio GmbH.
Hirschberger Ring 45, D 94315,
Straubing, Germany
Phone: [phone]
Fax: [phone]
France: EVI Audio France S.A.,
Parc de Courcerin,
Allée Lech Walesa,
F77185 Lognes, France
Phone: [phone]
Fax: [phone]
UK: Shuttlesound,
4The Willows Centre,
Willow Lane, Mitcham,
Surrey CR4 4NX, UK
Phone: [phone]
Fax: [phone]
Asia & Pacific Rim
Japan: EVI Audio Japan Ltd.
5-3-8 Funabashi, Setagaya-Ku,
Tokyo, Japan 156-0055
Phone: [phone],
Fax: [phone]
China: Telex EVI Audio (Shanghai) Ltd.
Room 2210-2215,
Tower B, Far East International Plaza
No. 317, Xianxia Road,
Shanghai, China, PC: 200051
Phone: [phone]
Fax: [phone]
Hong Kong: Telex EVI Audio (HK) Ltd.
Unit 5,1/F,Topsail Plaza
11 On Shum Street
Shek Mun,Shatin HK
Phone: [phone]
Fax: [phone]
Singapore: Telex Pte. Ltd.
3015A Ubi Road 1, 05-10
Kampong Ubi Industrial Estate, Singapore
408705
Phone: [phone]
Fax: [phone]
PA20670