To use the subwoofer with a standard Home Theater Receiver's "Sub Pre-Out" jack:
Apply a small amount of rosin-core solder to each exposed wire tip and to the DB15 connector cups before joining them. logitech z5500 wiring diagram exclusive
Without that handshake, the system would sit in standby forever. To use the subwoofer with a standard Home
These units feature a hardwired cable that goes directly into the control pod, with a DB15 plug only on the subwoofer end. Pin 12 (Sense) is actively monitored by a micro-controller. If Pin 12 does not read the correct impedance relative to ground, the internal amplifier system will lock down and refuse to power on, even if Pins 8 and 11 are bridged. logitech z5500 wiring diagram exclusive