Connecting the preamplifier – Microplane LUNATEC V2 User Manual

Page 4

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4

CONNECTING THE PREAMPLIFIER

AUDIO CONNECTIONS

Input connections are made using female XLR connectors. These are wired

with pin 2

positive, pin 3 negative and pin 1 ground. 48V phantom power, if used, is supplied on pins
2 and 3.

Output connections are made using male XLR connectors or RCA phono jacks. The XLR
connectors are wired

with pin 2 positive, pin 3 negative and pin 1 ground. Use the RCA

phono jacks for unbalanced output. If the XLR outputs are to be used unbalanced, a
modified cable is required and pin 3 should be left open. See figure 2 below. The XLR and
the RCA outputs can be used simultaneously.

1

2

3

SHIELD

HOT
GND

(OPEN)

Figure 2. UNBALANCED OUTPUT CABLE TERMINATION

POWER SUPPLY CONNECTIONS

A four pin XLR connector is used for the DC power input of the V2. The V2 can be ordered
to operate from either 6 or 12 Volt power sources. Pins 1 and 2 are ground and pins 3 and
4 are either 6 or 12V DC. To avoid compatibility problems it is recommended that 6 Volt
systems be wired to use pin 3 for hot (+6v) and pin 2 for ground while 12 Volt systems
should be wired to use pin 4 for hot (+12v) and pin 1 for ground. The V2 current draw
ranges from .38A to .62A depending on the microphone used.

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