Owner's Manual

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3
The Reference subwoofer amplifiers are
single-channel amplifiers. There are two sets of
terminals to make it easy to connect multiple
woofers. Either set of (+/–) terminals may be
used when connecting woofers.
To the right are four application diagrams to
help plan your subwoofer system installation.
NOTE: For simplicity, Figures 3 and 4 do not
show power, remote and input connections.
Subwoofers or voice coils connected in series.
Subwoofers or voice coils connected in parallel.
APPLICATIONS – 1300a AND 1600a
Figure 3. Reference 1300a or 1600a amplifier with two
woofer connections.
NOTE: Minimum impedance of each subwoofer = 4 ohms
if subwoofers are connected in parallel and 1 ohm if they
are connected in series.
NOTE: Minimum impedance of subwoofer = 2 ohms
Figure 4. Reference 1300a or 1600a amplifier with one
woofer connection.