d&b 16C - Manual (Page 7)

2.2. Connections
16C cabinets are fitted with a 4-pole Phoenix Euroblock connector
block accepting a 2-pole Phoenix Euroblock screw terminal
connector (cross-section up to 4 mm
2 /AWG 11). The connector
uses the pin assignments 1: + and 2: —. Pins 3 and 4 are not
connected.
In addition, an NL4 M connector is provided using the pin
assignment 1+/1–.
2.3. Operation
NOTICE!
Only operate d&b loudspeakers with a correctly configured d&b
amplifier, otherwise there is a risk of damaging the loudspeaker
components.
Application Setup Cabinets per
channel
16C 16C 3
For applicable amplifiers, the controller setup is available in Dual
Channel and Mix TOP/SUB mode.
2.3.1. Controller settings
For acoustic adjustment the functions CUT, HFA and CPL can be
selected.
CUT circuit
Set to CUT, the cabinet low frequency level is reduced. The
cabinets are now configured for use with actively driven d&b
subwoofers.
Connector wiring
d&b 16C Manual 1.2 en 7