JK Audio Four IFB - Manual (Page 17)

17
Operation (continued) Specifications
Inputs:
Line: Balanced Female XLR, 20k ohm,
+4 dBu max
Outputs:
Line: (5) Balanced Male XLR, 600 ohm,
Line level, +4 dBu max
Handset:
RJ-22 handset jack biased for
electret handset (not included)
Phone Line: (4)
RJ11C
Isolation:
1500 VAC
Ringer:
0.4B REN
Frequency Response:
Telephone Side 200 - 3600 Hz
Power:
120-240 VAC, 50-60 Hz
Internal power supply
Auxiliary Power
Single 9 VDC battery
Size:
10" x 9.75" x 2"
Weight: 3.5 pounds