Live events' production, equipment hire & technician booking.
Allows the use of NL4 cable to carry 2x channels to combine at one end and/or combine at the other. Pins 1 (1+1-) to pins 1+1- of the first whip, and pins 2 (2+2-) to pins 1+1- of the second whip.
1+1- to 2+2- and vice versa.
