Industry Upgrade Components
LS2 and LR2 Balanced Audio Sender/Receiver
The Sonance LS2 and LR2 form a system designed to send unbalanced signal. This virtually eliminates any noise picked-
low-level audio signals long distances and in close proxim- up over the length of the wire, leaving only the original signal.
ity to sources of noise interference without inducing noise
The LS2 and LR2 are always used in conjunction with each
or high-frequency roll-off. As a general rule of thumb, a
other, except when used in conjunction with equipment
balanced signal should be used for anything but short
with balanced inputs or outputs (such as professional
lengths of audio cable (under 20 feet) and wherever the
sound or recording equipment). In this type of system the
possibility of signal interference is likely (i.e. where the
LS2 serves as an unbalanced-to-balanced converter and
audio signal passes near dimmers, transformers, fluores-
the LR2 serves as a balanced-to-unbalanced converter. The
cent or neon lights, or along the same pathways as house
LS2 can also be used with the 275 SE and ASAP2 SAT
current). The active LS2 circuitry converts the unbalanced
amplifiers fitted with an LR1 SAT module (part# 91815).
signal to a balanced configuration and sends the balanced
signal to the LR2, which converts it back into an
Features:
Typical LS2/LR2 System:
Locating Amplifiers in Local Zones
• The LS2 unbalanced input and LR2 unbalanced output
connectors are high-quality gold-plated RCA connectors.
+L– SH –R+
• The LR2 balanced input and LS2 balanced output connectors
are removable quick-toggle RIA connectors.
LS2
OUTPUT
BALANCED
From
L
R
Preamp
Output
IN
Whole-Home System
• The LS2 and LR2 operate on a single-output 12V DC
power supply (included with both units), and can also be
powered directly by 12V sources. The power inputs have
reverse-polarity protection.
LS2
12VDC
150mA
INPUT
UNBALANCED
Preamp/Controller
OUT
Sender
BALANCED LINE SENDER
LR2
Zone 1
Receiver
+L– SH –R+
LR2
Volume
Control
INPUT
• DC In and DC Out connections on both units allow the
installer to power multiple units from a single power supply.
UNBALANCED
L
R
IN
12VDC
150mA
OUTPUT
BALANCED
OUT
BALANCED LINE RECEIVER
Power Amplifier
Speakers
• Recessed mounting holes allow wall mounting.
• Compatible with 3” TK-series SnapTrak® from Augat.
LR2
Zone 2
Receiver
+L– SH –R+
LR2
Volume
Control
INPUT
UNBALANCED
L
R
Specifications:
(0dB ref = 0.775V)
IN
12VDC
150mA
OUTPUT
BALANCED
OUT
BALANCED LINE RECEIVER
Power Amplifier
Speakers
THD + Noise:
<01%, 20Hz – 20kHz
Signal-to-Noise Ratio: >–100dB (IHF-A wtd)
CMRR (LR2):
>98dB (20Hz – 5kHz);
>75dB (5kHz – 20kHz)
Frequency Response:
Input Impedance:
20Hz – 20kHz 0.2dB
47k ohms (LS2 unbalanced inputs)
600 ohms (LR2 unbalanced outputs)
212 Avenida Fabricante
Output Impedance:
Power Consumption:
San Clemente, CA 92672-7531 USA
(800) 582-7777 or (949) 492-7777
FAX:(949) 361-5151
55mA 5% @ 12VDC (LS2);
30mA 5% @ 12VDC (LR2)
Dimensions (WxHxD): 4” x 2” x 3”
(102mm x 51mm x 76mm)
Technical Support: (800)582-0772
WWW.SONANCE.COM
©2007 Sonance. All rights reserved. Sonance is a registered trademark of Dana Innovations.
Due to continuous product improvement, all features and specifications are subject to change without notice.
For the latest Sonance product specification information visit our website:
06/07
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