ISP Technologies CS 650 - Manual (Page 5)

Rear of Speaker
The rear of the CS650 Speaker includes three RJ45 connectors one for input and one
for output and one that allows connection to one of three remote level control options,
the RM10, RM20 or the RM20I. The CS650 also includes a power jack that allows
connection to an external 18VAC power adaptor available from ISP Technologies if an
external adaptor is required. Connect the input to the output connector on a HDDS
Master Control Module. A Cat5 cable is used to connect the output connector to
another CS650 or to connect to any other ISP Technologies HDDS powered speaker.
The power connection on the back of the CS650 can be used to power the speaker as a
stand-alone speaker or can also be used to add additional power if a long run of Cat5
cable is used. The system is designed to allow both the Cat5 cable to supply power
plus the external adaptor at the same time without the risk of damage. The internal
power supply will simply derive power for the power source with the highest voltage
available.
The CS650 will typically pull less than 250 milliamps of current from the output of the
Master Control Module when used at typical listening levels. With a typical 5 watts of
power per speaker, a maximum of 12 CS650 ceiling speakers can be serially connected
on a single run of Cat5 cable. At maximum output level of 30 watts the CS650 can
pull in excess of 1 amp of current. If the installation requires maximum output power it
is recommended to limit the number of serially connected CS650 speakers on a single
50ft run of Cat5 cable to no more than 5 speakers. With longer runs of cable the total
number of CS650 ceiling speakers needs to be reduced in order to achieve a full 30
watts continuous output power. Connect the CS650 to any of the three A,B or C
outputs on the rear of the HDDS Master Control Module as shown above.