Meridian Audio Connecting the C51, Input connections, Trigger input, Output connections

Connecting the C51

TWEETER

CHANNEL 5

TWEETER

CHANNEL 4

TWEETER

CHANNEL 3

TWEETER

CHANNEL 2

OUTPUT

BASS

UNBALANCED INPUT

OUTPUT

BASS

UNBALANCED INPUT

OUTPUT

BASS

UNBALANCED INPUT

OUTPUT

BASS

UNBALANCED INPUT

OUTPUT

BALANCED

BALANCED

BALANCED

BALANCED

C51 Rear Panel (above) and front panel with acrylic cover in place (below)

TWEETER

BASS

CHANNEL 1	ac or dc	INPUT
UNBALANCED INPUT	5 - 30V	TRIGGER
BALANCED	MERIDIAN CONTROLLED	FAN OUTPUT

OFFON

POWER INPUT ~50-60Hz 30-1200VA MAX

CAUTION REPLACE WITH SAME TYPE FUSE

T10AH for 100-120V ac ~

Bass	Treble
	Channel 1
	Channel 2
	Channel 3
	Channel 4
	Channel 5
Stand By	Hot

C51 Active Speaker Power Unit
Channel 1	Channel 2	Channel 3	Channel 4	Channel 5
Crossover	Crossover	Crossover	Crossover	Crossover

The C51 contains five identical channel pairs (bass/treble) of audio amplification. Unless otherwise stated, this section refers to one channel only.

Input connections

Two full-inputs are provided for each channel: balanced (XLR-3F) and unbalanced (gold- plated phono). The active input is selected with a slide switch.

The audio connections should be made with high quality audio phono leads or XLR leads.

Trigger input

The unit is designed to be switched in and out of standby by means of the application of a trigger voltage via this 3.5 mm mono jack socket. The application of an AC or DC voltage between 5 and 30 volts will turn the unit on (ie bring it out of standby). Removing the voltage will return the unit to standby. Ensure that the trigger source is configured to provide a voltage within this range when the unit is required to be switched on.

Output connections

Connect the cables from the rear-panel output terminals to the speaker units. Be sure to observe correct polarity and the source and destination of each channel.

Note that these terminals can develop significant voltages/current-passing capability when the C51 is powered up and being fed with an active signal. Ensure that connections are made with the power disconnected from the unit.

You can connect five Meridian Active Installation Loudspeakers (such as the A320, A330, A350, or A200Z) to the C51. The C51 is designed specifically for use with Meridian Active Installation Loudspeakers, each of which is supplied with the appropriate crossover module. As a result the unit cannot be used with other loudspeakers.

•Connect each Meridian Active Installation

Loudspeaker to the appropriate outputs, using two pairs of speaker cables for each speaker connected to the BASS + and -, and the TWEETER + and - terminals.

•Plug the crossover module supplied with each Active Installation Loudspeaker into the appropriate crossover bay on the front panel of the C51, and re-fit the acrylic cover. Ensure that the card is correctlly seated and that the correct card for the speaker is in the appropriate slot. Each crossover card includes indicator lights that show the presence of power and, by their colour combination, indicate the type of speaker for which the card is designed.

•Connect the input for each channel to the appropriate CHANNEL 1 to 5 INPUT, using either the BALANCED or UNBALANCED input, and setting each INPUT switch accordingly.

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