d&b 4S - Manual (Page 8)

Fig. 10: Isobar diagram horizontal
5S
Fig. 11: Isobar diagram vertical
2.5. Technical specifications
4S system data
Frequency response (–5 dB standard mode) 130 Hz - 20 kHz
Frequency response (–5 dB CUT mode) 180 Hz - 20 kHz
Max. sound pressure (1 m, free field) with D6 114 dB
Max. sound pressure (1 m, free field) with D12 115 dB
(SPLmax peak, pink noise test signal with crest factor of 4)
Input level (100 dB-SPL/1 m) –4 dBu
4S loudspeaker
Nominal impedance 16 ohms
Power handling capacity (RMS/peak 10 ms) 60/400 W
Nominal dispersion angle (hor. x vert.) 100° conical
Components 4“ driver with neodymium magnet
0.75” dome tweeter, coaxially mounted
Passive crossover network
Connections 2 x NL4
1 x screw terminal block (ST - up to 4 mm 2 /AWG 11)
Pin assignments NL4: 1+/1–
Weight 1 kg (2.2 lb)
Fig. 12: 4S frequency response, standard and CUT modes
Fig. 13: 4S cabinet dimensions in mm [inch]
d&b 4S/5S Manual (1.2 EN) 8