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PA-S 250
Compact Amplifiers
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Special features
  • Remote controllable 2-Channel amplifier

  • Output power 2 × 50 watts at 2-4 ohms,
    2 × 30 watts at 8 ohms

  • Symmetrical inputs, Cinch inputs

  • VCA inputs per each channel

  • Auto-On/Off switchable

  • Ext. On/Off contact

  • Switchable input sensitivity +4/-6 dBU per channel

  • Fanless

  • Switchable Ground Lift
  • Chassis ¼ 19“, 1 U
  • Optional:
  • 100 V transformers
  • Volume control (wall-panel WP-V or rack-panel RP-V)
  • DV module for volume control via Up/Down contacts
Fields of application
  • Home audio
  • Media rooms
  • Conference rooms
  • Shops, sales rooms
  • Gastronomy
  • Concert halls, theatres
  • Churches
Description

The PA-S 250 is a sophisticated 2-Channel amplifier for use in AV systems, multi-room systems and multi-channel PA systems. The circuit design of the PA-S 250 combines superior sound quality and operational reliability with minimal power consumption. The processor-controlled class-D amplifiers guarantee outstanding efficiency levels and high power reserves. The Auto On/Off function automatically switches the amplifier to energy-saving SLEEP mode if no input signal is detected. The amplifier has an output rating of 2 x 50 watts at 2 – 4 ohms or 2 x 30 watts at 8 ohms. It is equipped with both cinch inputs and symmetrical inputs. A ground lift switch and DIP switches for changing input sensitivity enable optimum adaption to different signal sources. The front features LEDs for Standby/Power, Sleep, Signal, Limit and Protect. The inputs, volume controllers for each channel, ON/OFF contact and VCA inputs for volume control are all located on the back. The external volume can be controlled via a control voltage of 0 – 10 V, via the WP-V and RP-V volume control panels, or via the DV module and Up/Down contacts.

Technical data
Inputs 2 × Line In sym. + 2 × Line In Cinch
Nom. input level + 4/-6 dBU, switchable
Max. input level + 16 dBU
Input impedance 20 kohms
Load impedance ≥ 2 ohms
Outputs 2 × Speaker Out up to 2 × 2,5 mm², (screwtype terminals, pluggable)
Output power
2 Ohms
4 Ohms
8 Ohms

2 × 50 Watts
2 × 50 Watts
2 × 30 Watts
Frequency range 15 Hz – 22 kHz
THD < 0,05 % (3 dB below full power)
Dynamic range > 100 dB
Display LED for ON/STANDBY; LEDs per channel for PROTECT, LIMIT, SIGNAL, SLEEP
Controls Power switch at front. At back VOLUME control per channel, DIP switches for AUTO ON/STEADY ON, GROUND/LIFT and SENSITIVITY +4/-6 dBU
Additional connectors VCA inputs 0 -10 V for each channel (also for DV modules), ON/OFF contact N/C
Cooling Fanless
Protective circuits Peak limiter, current limiter and power limiter for each speaker output, short circuit and multilevel overtemperature protection
Power supply 90 up to 260 VAC
Main connector IEC connector
Power consumption
Standby
All channels SLEEP
All channels active
1/8 Nominal Power
Max. average consum.
Peak power

<0,5 Watts
2,7 Watts
4,4 Watts
20 Watts
42 Watts
125 Watts
Dimensions
(W × H × D)
¼ 19“, 1 U, 110 × 42 × 233 mm
Weight 1.2 kg
Warranty 5 years
Downloads
Data sheet (PDF)
Manual
 
ModelVersion
PA-S 250
Order No.: 3005-0001
2-Channel amplifier with sym. and Cinch input
Accessories
WP-V
Order No.: 3401-0002

Wall Panel (Volume control and ON/MUTE)

RP-V
Order No.: 3402-0002

Rack Panel (Volume control and ON/MUTE)

RP-1U
Order No.: 3402-0016

19“ Rack mount, 1U, for 6 × RP panels

DV-Module
Order No.: 3109-0006
Digital volume control (UP/DOWN contacts)
PA-T 2050
Order No.: 3109-0001
100 V transformer module, 2 × 50 watts, toroidal core
PA-T 1U
Order No.: 3109-0005
Rack cradle 19“, 1 U, for up to 4 x PA-S 250 or PA-T 2050
MP-PA-S
Order No.: 3005-0030
Mounting plate for PA-S Series