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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. CS0334A

Features

 Digital, high current bridgeable stereo amplifier

■ 

150 watts RMS per channel into 8 Ohms (all channels driven)

■ 

270 watts RMS per channel into 4 Ohms (all channels driven)

■ 

Channels are bridgeable to 550 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 finest parts available, including 1% metal film 

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 certified 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)

SyStemS IntegratIon amplIfIer

®

SI-2150

2-CHANNEL BRIDGEABLE  
POWER AMPLIFIER

Home THeaTer receiver

Switched 

ac outlet

100-120V / 220-240V~

50 / 60Hz 200W

TURN ON MODE

AUDIO SENSE

CONSTANT

3-24V

AC/DC

TRIGGER

INPUT

12V

CONTROL

OUT

L

R

L

R

BUS

OUTPUT

FOR

BRIDGED

MODE

L

R

LEVELS

MAIN BUS

INPUT

STEREO

BRIDGED

CLASS 2 WIRING

LEFT

RIGHT

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.

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.

Niles Audio, Petaluma, California, USA

Designed and Engineered in the U.S.A. Made in China

T5AL, 250V

Serial No.

CAUTION: replace only with same type and rating of fuse.
ATTENTION: remplacer uniquement avec le même type 
et calibre du fusible.

Minimum impedance:
2.66 Ω (stereo mode)
4 Ω (bridged mode)

S I - 2 1 5 0

S y s t e m s

I n t e g r a t i o n

A m p l i f i e r

®

100-120V / 220-240V~

50 / 60Hz 200W

S I - 2 5 0

S y s t e m s

I n t e g r a t i o n

A m p l i f i e r

®

TURN ON MODE

AUDIO SENSE

CONSTANT

3-24V

AC/DC

TRIGGER

INPUT

12V

CONTROL

OUT

L

R

L

R

BUS

OUTPUT

FOR

BRIDGED

MODE

L

R

LEVELS

MAIN BUS

INPUT

STEREO

BRIDGED

CLASS 2 WIRING

LEFT

RIGHT

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.

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.

Niles Audio, Petaluma, California, USA

Designed and Engineered in the U.S.A. Made in China

T5AL, 250V

Serial No.

CAUTION: replace only with same type and rating of fuse.
ATTENTION: remplacer uniquement avec le même type 
et calibre du fusible.

Minimum impedance:
2.66 Ω (stereo mode)
4 Ω (bridged mode)

Si-250

Si-2150

WIRINg LEgEND

audio

3.5 mm

Speaker cable

ac

maSTer BaTH

Loudspeakers

Dining room

Loudspeakers

kiTcHen

Loudspeakers

office

Loudspeakers

maSTer BeDroom

Loudspeakers

PaTio

oS Loudspeakers

Parallel 

connection

Parallel 

connection

audio 

Tape out

  APPLICATION

CASCADE TO INCREASE POWER IN CRITICAL AREAS

31 WaTTS Per SPeaker - 4 Ω

85 WaTTS Per SPeaker - 4 Ω

STOCK# Fg01703

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