Parasound
®
ZoneMaster
™
2350 Owner’s Manual
Page 9
Audio Output Connections
Loop Out Jacks
These jacks enable the incoming audio signal to pass along or “daisy chain” from the Line level L and R Input
jacks to an additional amplifier. The Speaker Level Input connection is converted to line level and is also
available at the Loop Out jacks. The Loop Out jacks are not affected by any of the Model 2350 control settings.
Mono Out Jack (Full Range)
The mono output combines the Left and Right channel inputs into summed L + R mono. This could be
useful for connecting a powered subwoofer that has its own built-in crossover. It could also be used for
connecting an additional amplifier in mono applications. The Mono Out jack is always active, regardless of
the setting of the Mode or High Pass switches.
Sub Out Jack (80
Hz Low Pass)
This is a low-pass output that combines the left and right inputs into a L + R mono signal. This could be
useful for connecting to a separate power amp to drive a passive in-wall subwoofer. The Low Pass
crossover is fixed at 80
Hz with a 24
dB per octave slope. The Sub Out jack is always active, regardless
of the setting of the Mode or High Pass switches.
Note:
If you connect the Sub Out 80 Hz Low Pass Out jack to a powered sub the sub’s built-in
crossover must be switched to Full Range. If your sub’s crossover does not have a full range
setting you should use the 2350 Full Range Mono Output jack.
Connecting Speaker Wires
The speaker binding posts will accept a wide variety of speaker wire and connectors including large
spade connectors, banana connectors and bare wire as large as 10AWG (gauge).
Speaker A and B Outputs
The ZoneMaster 2350 is equipped with connections for two speakers on each channel (labeled A and B).
This unique feature gives system designers greater flexibility and can usually avoid the added expense,
complexity, heat and power consumption of additional amplifiers. The ability of the ZoneMaster 2350 to
drive two pairs of speakers can be attributed to Parasound’s 2 ohm stable high current design.
Typical applications for using both Speaker A and B terminals might include a large living room with four
ceiling speakers. Another use for the B speakers could be in a sub-zone like a bathroom or hallway that is
adjacent to the room where the A speakers are installed.
Note:
Speaker A and B terminals are parallel connections inside the amp.
Total Speaker Impedance (A + B)
The R and L channels are each capable of driving speaker loads as low as 2 ohms. An example of a 2 ohm
load is one 4 ohm speaker connected to one channel’s speaker output A while another 4 ohm speaker is
connected to the same channel’s speaker output B. When driving 2 ohm loads the amplifier will generate
more heat and it is important to ensure that it has adequate ventilation. See the chart on pages 14-16 to
determine how many speakers you can drive and how much power each will be receiving.
! SPEAKER CONNECTION WARNINGS !
1. Never combine the Speaker L & R channel negative (−) output terminals together.
Combining the Left and Right channel black negative (−) terminals will cause the amplifier to engage its
protection circuit and could even seriously damage the amplifier. L and R channel speakers cannot be
wired where they share a single negative (−) wire. Some speaker selectors combine the negative speaker
connections and are not compatible with the ZoneMaster 2350.
2. The ZoneMaster 2350 does not support Bridging.
Do not attempt to wire the 2350 for bridged operation as this could damage it.
