Whirlwind LM2U, LM2B Specifications

LM2U/LM2B

whirlwind

LM2 LEVEL MATCHERS

The Whirlwind LM2 Level Matchers are unique,
high quality solutions for converting analog
audio levels and impedances between -10 dBV
“consumer” or “semi-pro” (also known as IHF
standard) unbalanced equipment and +4 dBm
balanced professional equipment. The LM2B is
the “up converter”, amplifying unbalanced IHF
signals 14dB and providing balanced output
signals. The LM2U functions in reverse, taking
balanced +4dBm professional levels, actively
attenuating them and delivering unbalanced
outputs at IHF levels. Both converters use
extremely quiet, high quality active circuits with
adjustable gain controls so that signal levels
from various devices of gear can be matched to
one another.

LM2B

OUT

REDWHT

LEVEL

REDWHT

IN

T=W

R=R

Whirlwind USA www.whirlwindusa.com LM2B -10/+4

Balanced

Outputs

POWER

Gain

Controls

RCA

Inputs

3.5mm
TRS

Input

LM2U

WHT RED

IN

LEVEL

REDWHT

Whirlwind USA www.whirlwindusa.com LM2U +4/-10

Balanced

Inputs

POWER

Gain

Controls

Balanced connections are through gold plated XLRs.
Unbalanced connections include gold plated RCAs and
a stereo 3.5mm mini connector. The units are powered by
an external 24 VDC supply (model #PS24) which
connects in the rear of the unit above the mounting
flange. The level controls of each unit are marked at the
position that represents nominal conversion gain
settings.

RCA

Outputs

OUT

T=W
R=R

3.5mm
TRS

Output