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E Series – E475 Operating Instructions
Connecting To Your Amplifier: Inputs
Important Note: All E475 amplifiers before serial number 7E70004 have a different wiring
configuration for the input and output sockets. This will only affect the amplifier when
operating in linked or bridged modes.
The inputs are made via 3-pin XLR connectors, which are electronically balanced and should
be connected via a high grade twin core screened cable, as follows:
PIN1: Screen (see note)
PIN2: Hot ()
PIN3: Cold (signal -)
The amplifier is designed to operate with fully balanced equipment - loss of performance
may be experienced if connected to unbalanced sources. If it is unavoidable, however, the
following wiring should be used. The cable should still be twin core plus screen.
PIN1:
Screen - connected to the chassis of the unbalanced equipment - or left disconnected
at the unbalanced end.
PIN2: Hot ()
PIN3: Cold (ground 0V)
NOTE: This amplifier is wired to the latest industry recommendations. PIN1 is connected
directly to the chassis/mains earth. If ground loops (mains hum) are encountered, remove the
screen connection from the other end of the cable and leave it open circuit. If problems
persist, consult your dealer/supplier.
DO NOT TAMPER WITH OR ALTER ANY GROUND (EARTH) CONNECTIONS INSIDE THE
AMPLIFIER.
For bridged operation, input should be made to channel A (or C) only and the rear panel
“Channel Link” switch pressed IN (A&B, or C&D) to feed this signal to both appropriate inputs.
X
L
R
M
A
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