Owner`s manual

Ci
TM
owner’s manual
Amplifier Operation
Input Sources
Ci Power Processing amplifiers are designed to accept a balanced input signal. For
use with an unbalanced source, tie the inverting (minus) input to ground by installing
a jumper across the appropriate Phoenix connector terminals. If the inverting input
is left floating, a 6 dB loss in gain will result. See the diagram below.
(Wiring diagram for unbalanced input)
Output Connections
Speakers are connected using the Output Barrier Strip connectors. Spade lugs,
ring tongues or bare wire may be connected to the output barrier strip elements.
Spade Lug measurements for Output barrier strip are as follows: 0.44” (11mm)
screw spacing, 0.32” (8mm) lug space. For output spade lugs, Panduit Part No.
PNF 14-8LF-C (or equivalent) is recommended (consult the wire gauge charts
in Appendix D for speaker wiring recommendations). Make sure the amplifier is
turned off before you change any output connections or jumpers. Also ensure
that the impedance of the load being connected is not less than the amplifier’s
recommended minimum load.
Output Configuration
Ci Power Processing amplifiers are factory configured for two channel (stereo)
operation. They can, however, be wired to operate in bridged mono mode (a single
mono input amplified to the combined power of two channels and made available
as a single Mono output) or parallel mode (where a single mono input signal is fed
to both channels).
Channel (Stereo) Mode
In the standard channel (stereo) mode, all channels operate independently.
Individual input attenuators control the respective levels of each channel. Signal at
Channel 1 input produces output at Channel 1 output, while signal at Channel 2
input produces output at Channel 2 output and Channel 3 input produces output
at Channel 3 output, etc.. Recommended minimum nominal load impedance
for stereo operation of Ci Series amplifiers is 4 ohms per channel. Connect
loudspeakers to the barrier strip output connectors for all channels A thru H.
Connections are shown in the diagram below.
(Diagram of Stereo Output Configuration)
The Ci amplifier is an eight channel amplifier. It can be configured in combinations
of bridged and single (stereo) channels. For instance, channels 1, 2, 7 and 8 can be
independent (stereo) channels while channels 3 and 4 are bridged and channels 5
and 6 are bridged. Each channel pair (1 & 2 or 3 & 4 or 5 & 6 or 7 & 8) has an
associated Mode switch for Stereo or Bridged operation. When in stereo mode
the channel pair act as independent amplifier channels. When in bridged mode, the
channel pair is setup to run as one more powerful channel.