Wharfedale Pro MX-112 Operating Manual And User Manual page 35

MX-218B Horn-Loaded Subwoofer
Features
- Dual 18 " high efficiency 4 " voice coil low
frequency transducers with aluminium die-cast
frames.
- High Power Handling Capabilities up to 6400
Watts.
- Specially designed dual chamber enclosure
allowing for use of single or dual amplifier
channels via recessed switch on the connector
plate.
- 4 ohm parallel, single channel or discrete 8 ohm
dual channel configurations available.
- Four integral carry handles.
- 18mm (3/4 " ) birch plywood construction.
Where significant extension of low frequency output of a sound system is required, the
addition of one or more MX-218B subwoofers will provide high output, low frequency
enhancement to the overall system. The MX-218B is designed to work with an external,
active crossover unit. For demanding, high output applications, it is recommended that
each MX-218B be powered with a dedicated, high powered amplifier channel or an amp
in bridged-mono mode. If a variable low pass filter is available on the active crossover unit
being used, it may take some experimentation with different settings of this control to find
the best sounding setting for the particular performance environment. Consult the
instructions for the electronic crossover being used for details.
Connections:
The MX-218B input connections from the output of the amplifier are via dual NL-4
Speakon
218B can be used in a switchable 4 ohm/parallel driver configuration or a discrete, dual
8 ohm driver "DISCRETE"mode that allows a separate amplifier to drive each speaker
independently at 8 ohms each. In PARALLEL mode NL-4 connections 1+/1- are used. In
DISCRETE mode, connections 1+/1- and 2+/2- are used for each driver.
(See Specifications on page 35)
®
type connectors that are located on the rear mounted input plate. The MX-
MX Series
34