Niles Audio SI-250 User Manual
SPECIFICATIONS SHEET
SYSTEMS INTEGRATION AMPLIFIER
SI
Features & beneFits
-
Offering the classic Niles stability that you’ve come to know and trust, the powerful SI-250 brings extremely high current
power to a custom installed A/V System in a remarkably convenient way. Featuring audio circuitry constructed using the
nest materials available, including 1% metal lm resistors, high quality capacitors and oversized heat sinks that ensure
proper cooling without the need for a noisy fan. This 2-channel amplier provides 50W per channel (225W when bridged
for higher output applications) and independent level control, making installation easier and more straight forward than
ever before.
2-CHANNEL BridgEABLE POWEr AMPLiFiEr
®
■ Real World Power The SI-250 delivers 50 watts per
channel at 8 ohms and 100 watts per channel at 4
ohms. You’ll get tremendous bass and dynamics from
every pair of speakers connected.
■ Turn-On Modes The Niles SI-250 Amplier features
three turn-on modes: 1. Music Sense, 2. External
Voltage Trigger, 3. Manual Turn-On via the front panel
switch. You can congure the Niles SI-250 Amplier
to interface with any kind of system and have the unit
automatically turn on.
■ Bridged Mode The Niles SI-250 Amplier can be
operated in a bridged mono conguration. In this
conguration, the SI-250 delivers 225 watts. Bridged
mode is perfect for subwoofer, rock speakers or any
applications requiring high power output.
■ Independent Level Controls Each amplier channel
features an independent level control enabling precise
volume matching to the rest of the system. These level
controls can also limit volume to prevent abuse of the
system.
B l e n d i n g H i g H F i d e l i t y A n d A r c H i t e c t u r e
■ Freedom from Fan Noise The oversized heat sinks
inside the System Integration Ampliers allow the
amplier circuitry to stay cool even when operating
into low impedance loads without the distracting noise
created when using fan-cooled ampliers.
■ Current for Reactive Loads The high current design
of the Niles SI-250 Amplier assures that even unusual
and reactive loads are handled with ease. Cutting edge
digital power supplies provide more than ample current
to your system.
■ Freedom from Cross-Talk The Niles SI-250 Amplier
is powered via its own independent power supply.
This increases the isolation between channels and
eliminates cross talk, guaranteeing you absolute silence
as the backdrop to your music.
■ Control Output A 12 Volt DC output is provided
whenever the amplier is on, allowing you to operate
voltage triggered devices like motorized screens and
curtains.
®
CALL 1-800-BUY-HIFI – 760.710.0992 – www.nilesaudio.com
SyStemS IntegratIon amplIfIer
®
SI-250
2-CHANNEL BRIDGEABLE
POWER AMPLIFIER
STOCK# FG01701
Featu r e s
■ Digital, high current bridgeable stereo amplier
■ 50 watts RMS per channel into 8 Ohms (all channels driven)
■ 100 watts RMS per channel into 4 Ohms (all channels driven)
■ Channels are bridgeable to 225 watts RMS into 8 Ohms
■ Auto switching 110V-230V power supply
■ Three turn-on modes: music sense, voltage trigger, and manual
■ Voltage trigger input accepts 3-24VAC/DC
■ Audio circuitry constructed with the nest parts available, including 1% metal lm
resistors, high quality capacitors and oversized heat sinks for clear and uncolored
sound
■ Independent level controls
speciFications
■ 12-volt control out
■ Removable line cord
■ Two year limited warranty
■ Rack mount ears included
■ Tested and certied to US, Canada, EU , and Australian safety and EMC standards
■ Overall dimensions:
17 ¼” (43.81 cm) wide – 2 ¼” (5.6 cm) high (including feet)
13 ½” (34.35 cm) deep
■ Weight: 10.8 lb. (4.9 kg)
APPLICATION
HOME THEATER RECEIVER
Speaker
A
SS-4
Niles Audio Corporation Miami, Florida USA
AMPLIFIER SPEAKER 4 SPEAKER 3 SPEAKER 2 SPEAKER 1
WIRING LEGEND
Audio
Speaker Cable
3.5 mm
INCREAsE POWER IN CRITICAL OUTDOOR AREAs
Audio Tape Out
12 V Trigger Out
SI-250
Loudspeakers
MASTER BATH
S I -2 5 0
Sy s te ms
In t eg ra t io n
®
Am p lifi er
TURN ON MODE
AUDIO SENSE
CONSTANT
Loudspeakers
DINING ROOM
3-24V
AC/DC
TRIGGER
INPUT
This Class B digital apparatus complies with Canadian
ICES-003.
Cet appareil numérique de la classe B est conforme à la
norme NMB-003 du Canada.
LEVELS
L R
12V
CONTROL
OUT
Loudspeakers
L
FOR
BRIDGED
MODE
R
MAIN BUS
INPUT
KITCHEN
L
R
BUS
OUTPUT
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.
STEREO BRIDGED
LEFT RIGHT
Loudspeakers
OFFICE
CLASS 2 WIRING
Minimum impedance:
2.66 Ω (stereo mode)
4 Ω (bridged mode)
Niles Audio, Petaluma, California, USA
Designed and Engineered in the U.S.A. Made in China
OS Loudspeakers
PATIO
47 WATTS PER SPEAKER - 4 Ω15 WATTS PER SPEAKER (ASSUMING A 100 WATT RECEIVER)
Serial No.
T5AL, 250V
100-120V / 220-240V~
50 / 60Hz 200W
CAUTION: replace only with same type and rating of fuse.
ATTENTION: remplacer uniquement avec le même type
et calibre du fusible.
Parallel
Connection
Rock Loudspeakers
POOL
1-800-BUY-HIFI – www.nilesaudio.com
©2013 Core Brands, LLC. All Rights Reserved. Niles, the Niles logo and Blending High Fidelity and Architecture are registered trademarks of Core Brands, LLC. All other trademarks are the
property of their respective owners. We reserve the right to change features, descriptions, and/or specifications at any time without notice. CS0336A
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