Madrigal Imaging Audio/Video Preamplifier manual Pin 1: Signal ground

7REMOTE BALANCED OUTPUTS

If the system being used in the remote zone is equipped with balanced (sometimes called “differential”) inputs, it is best to use these balanced out- puts on your PAV. A balanced signal from preamplifier to power amplifier will offer the highest possible performance with the best immunity from common-mode noise, such as electromagnetic interference (EMI) or radio frequency interference (RFI). This characteristic immunity is particularly im- portant when using long cable runs, as may be expected when sending a signal to a remote location. The balanced output signal is made available by way of precision male XLR connectors (requiring female XLRs on the PAV end of the interconnecting cable).

The pin assignments of these XLR-type male outputs are:

	Pin 1: Signal ground
1 2	Pin 2: Signal + (non-inverting)

3Pin 3: Signal – (inverting)

Connector ground lug: chassis ground

Refer to your amplifier’s operating manual to verify that the pin assignments of its input connectors correspond to the PAV. If not, wire the cable so that the appropriate output pin connects to the equivalent input pin.

Connect the right-channel and left-channel balanced remote outputs of the PAV to the appropriate balanced inputs of the remote system.

8MAIN BALANCED OUTPUT

If the power amplifier being used to drive the Front Left and Front Right speakers is equipped with balanced (sometimes called “differential”) inputs, it is best to use the balanced main outputs on your PAV. A balanced signal from preamplifier to power amplifier will offer the highest possible perfor- mance with the best immunity from common-mode noise, such as radio frequency interference (RFI). The balanced output signal is made available by way of precision male XLR connectors (requiring female XLRs on the preamplifier end of the interconnecting cable).

The pin assignments of these XLR-type male outputs are:

	Pin 1: Signal ground
1 2	Pin 2: Signal + (non-inverting)

3Pin 3: Signal – (inverting)

Connector ground lug: chassis ground

Refer to your power amplifier’s operating manual to verify that the pin as- signments of its input connectors correspond to the PAV. If not, wire the cable so that the appropriate output pin connects to the equivalent input pin.

Connect the right-channel and left-channel balanced main outputs of the PAV to the appropriate balanced inputs of the remote system.

9SINGLE-ENDED MAIN OUTPUTS

Single-ended (“unbalanced”) outputs are provided for compatibility with a wide range of associated components.

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