Sonance LR2 - Manual

INTRODUCTION
Thank you for purchasing the LS2/LR2 balanced line sender/receiver. The LS2
converts line-level audio to a balanced line configuration; the LR2 converts
balanced line audio back to line-level.
When connected with high-quality 4-conductor shielded audio wire (such as
Sonance MediaLinQ), the LS2 and LR2 form a system designed to provide
high-quality/low-loss audio for long-distance requirements. They can send
low-level audio signals long distances and in close proximity to sources of
noise interference without inducing noise or high-frequency roll-off. As a
general rule of thumb, a balanced signal should be used for anything but short
lengths of audio cable (under 20 feet) and wherever the possibility of signal
interference is likely (i.e. where the audio signal passes near dimmers, trans-
formers, fluorescent and neon lights, or along the same pathways as house
current). The active LS2 circuitry sends the signal to the LR2, virtually elimi-
nating any noise picked up through the wire during the signal transfer, leav-
ing only the original signal.
The LS2 and LR2 are always used in conjunction with each other, except when
used in conjunction with equipment with balanced inputs or outputs (such as
professional sound or recording equipment). In this manner, the LS2 could be
used as an unbalanced-to-balanced converter and the LR2 could be used as a
balanced-to-unbalanced converter. The LS2 can also be used with the 275 SE
and ASAP2 SAT amplifiers with an LR1 SAT module (part# 91815) installed.
LS2/LR2 NEW FEATURES
The LS2 and LR2 incorporate several new features that improve their
performance and installability:
• The LS2 and LR2 operate on a single-output 12V DC power supply, and can also be
powered directly by 12V sources in cars, boats or RV installations. The LS2 and LR2
power inputs have reverse polarity protection.
• DC In and DC Out connections allow multiple units to share a single power supply.
• The LS2 and LR2 Balanced Input and Balanced Output connectors are removable
quick-toggle RIA connectors.
• The LS2 and LR2 chassis have recessed mounting holes that allow them to
easily be wall-mounted using two screws.
• The LS2 and LR2 chassis’ are compatible with 3” TK-series SnapTrack ® from Augat.
I N S T R U C T I O N M A N U A L
L S 2 a n d L R 2 I N D U S T R Y U P G R A D E
BALANCED LINE SENDER AND RECEIVER
OUTPUT BALANCED
INPUT UNBALANCED
BALANCED LINE SENDER
+L– –R+ SH
LR
IN
OUT
12VDC 150mA
LS2
IN
OUT
12VDC 150mA
LR2
INPUT UNBALANCED
OUTPUT BALANCED
BALANCED LINE RECEIVER
+L– –R+ SH
LR
IN
OUT
12VDC 150mA
LR2
INPUT UNBALANCED
OUTPUT BALANCED
BALANCED LINE RECEIVER
+L– –R+ SH
LR
IN
OUT
12VDC 150mA
LR2
INPUT UNBALANCED
OUTPUT BALANCED
BALANCED LINE RECEIVER
+L– –R+ SH
LR
Volume
Control
Power Amplifier Speakers
Whole-Home System
Preamp/Controller
Zone 1
LS2
Sender
LR2
Receiver
LR2
Receiver
LR2
Receiver
Volume
Control
Power Amplifier Speakers
Zone 3
Volume
Control
Power Amplifier Speakers
Zone 2
From
Preamp
Output
APPLICATIONS
Here are two examples of how the LS2 and LR2 can be used in different system configurations:
Illustration 1: Locating Amplifiers in Local Zones
SONAMP 875D SE
PROTECTION
AUTO-ON
BBE ON ACTIVE
LR
1–2 3–4 5–6 7–8
LR LR LR
OUTPUT BALANCED
INPUT UNBALANCED
BALANCED LINE SENDER
+L– –R+ SH
LR
IN
OUT
12VDC 150mA
LS2
IN
OUT
12VDC 150mA
LR2
INPUT UNBALANCED
OUTPUT BALANCED
BALANCED LINE RECEIVER
+L– –R+ SH
LR
MENU
Bedroom System
Receiver
Speakers Speakers Speakers
Bedroom Speakers
From
Main
Outputs
From
Tape Record
Outputs
To
Aux
Inputs
Whole-Home
System Preamp
CD Changer
iPort with iPod
Whole-Home
System Amplifier
LS2
Sender
LR2
Receiver
Volume
Control
Volume
Control
Volume
Control
Zone 1 Zone 2 Zone 3
1
Illustration 2: Connecting Remote Sources to a Local System
Locating Amplifiers in Local Zones
(see Illustration 1 )
Locating power amplifiers close to the speakers they drive minimizes power
loss through long speaker wire runs. The LS2 converts the preamp output to
a balanced signal, allowing it to be sent long distances to local amplifiers
without noise interference or high-frequency loss. Local LR2s convert the
balanced signal back to an unbalanced line-level audio for the amplifiers.
The LS2’s balanced output can be “daisy-chained” to up to nine (9) LR2s.
Connecting Remote Sources to a Local System
(see llustration 2 )
A whole-home audio system can be connected to a local system, allowing its
sources to become sources for the local system. The LS2 converts a preamp
output or tape record output from the whole-home preamp/controller to a
balanced signal that can then be sent a long distance. An LR2 at the local
system converts the balanced signal to a line-level signal that is then connected
to an input on the local system.