Installation Instruction VARIODYN
®
 D1 System 
 
FB 798663.GB0 / 05.19  71 
7.6.2  Specification - 4XD and 4XV-Series 
 
Type     4XD125B   4XD250B   4XD300   4XD500   4XV300  4XV500 
Mains voltage  :  230 V AC, +10% / -5% 
Frequency range  :  50 … 60 Hz 
Emergency  
power supply 
:  21,5 V DC … 28,5 V DC  24 V DC  ---  --- 
Rated current  
@ 230 V AC
 *6
 
:  1,13 A  2,2 A  4,0 A  6,0 A  4,0 A  6,0 A 
Rated current 
 
@ 24 V DC
 *6
 
:
  9,44 A  18,6 A  25,9 A  40,1 A  ---  --- 
Current  
(1 kHz sinus / 1 min.)  
@ 24 V DC 
*7
 
:  26,5 A  53,5 A  57,0 A  83,0 A  ---  --- 
Output power 
*8
  :  4 x 125 W  4 x 250 W  4 x 300 W  4 x 500 W  4 x 300 W  4 x 500 W 
Technology  :  Class D 
Transmission range  :
  20 … 22 kHz  20 Hz … 20 kHz 
Input level  :  0 dBu 
System input 
impedance 
:
  20 kOhm 
Signal to noise ratio  :
  ≥ 90 dB (A)  ≥ 97 dB (A) 
Channel separation  :  ≥ 75 dB  ≥ 83 dB 
Distortion factor 
@ 1 kHz 
:
  ≤ 0,3 %   ≤ 0,05 % 
Efficiency  :  ≥ 80 % 
Ambient 
temperature 
:  -5 °C … +55 °C 
Storage 
temperature 
:
  -10 °C … +55 °C 
Humidity  :
  up to 93 % rel. hum. (non-condensing) 
Housing  :
  Metal 
Colour  :
  grey, similar to RAL 7016 
Weight  :
  approx. 9 kg  approx. 12 kg  approx. 14,3 kg  approx. 14,4 kg  approx. 13,4 kg  approx. 13,5 kg 
Dimensions  
(w x h x d) 
:
 
483 x 44 x 400 
mm (1HU) 
483 x 88,4 x 390 mm (2 HU) 
Specification  :  EN 54-4 and EN 54-16 
 
*6 
Rated current @ 33 % load 
*7
 Acc. EN 54-16 (laboratory test) 
*8
 Output power acc. EN 54-16. 
 
For analogue amplifiers, the output power is generally used as the planning dimension. 
This is not always possible for digital final stages. If there are no details relating to 
amplifier/loudspeaker pairings for specific signals, a maximum of 50 % of the nominal power should 
be used as the planning dimension.