Applications - Infinity Reference 475a Instructions Manual

A – 1300a 1600a
PPLICATIONS AND
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.
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.
Figure 4. Reference 1300a or 1600a amplifier with one
woofer connection.
NOTE: Minimum impedance of subwoofer = 2 ohms
3