Technical information

Owners Manual 13
Connecting the subwoofer
Multiple subwoofer connections
The Dynaudio Sub 250 can be used stand-alone or together with multiple subwoofer
units. Using multiple units may be helpful if the listening room is quite large or has difficult
acoustic conditions (e.g. room-modes, see also “Positioning the subwoofer” on page 20
for further information).
When using two or more subwoofers, the first one (designated “Master”) controls the
following subs (designated “Slave”) via a subwoofer cable.
To connect multiple subwoofers:
1. Connect the first subwoofer with the processors/receiver as described before.
2. Set MODE switch of first subwoofer to LFE.
3. From the SUB I/O - LFE/To Slave output of the first subwoofer connect a mono RCA-
to-RCA cable to the SUB I/O - LFE/Slave In input of the following subwoofer. This
now becomes the slave.
4. Set the MODE switch of the second subwoofer to Slave.
 Further subwoofers can be connected in the same way. Set the MODE switch of all
following subwoofers to Slave respectively.
Note: In order to avoid interference and noise, we recommend you use quality, well
shielded cables.
When using multiple subwoofers in a Master-Slave setup, it is recommended that
the subwoofers are all the same model.
If you wish to use multiple subwoofers with full individual control, set the Input
switch for all to the “Master” position. From the Amplifier, processor or receiver’s
subwoofer output, use a Y-connector.
Sub 1
(Master)
Sub 2
(Slave)
Sub...
(Slave)
LFE/SUB Out
Front Out/
Pre Out