Niles SI-250 Owner's Manual

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SI-250

SI-2100

SI-2150

Design Principle

Fully discrete, high
current bridgeable
stereo amplifier

Digital, high current
bridgeable stereo
amplifier

Continuous
Average Power
Output

50 watts RMS per
channel into 8 Ohms,
100 watts RMS per
channel into 4 Ohms
(all channels driven)

100 watts RMS per
channel into 8 Ohms,
220 watts RMS per
channel into 4 Ohms
(all channels driven)

150 watts RMS per
channel into 8 Ohms,
270 watts RMS per
channel into 4 Ohms
(all channels driven)

Continuous
Average Power
Output Bridged

225 wats RMS per
channel into 8 Ohms

400 wats RMS per
channel into 8 Ohms

550 wats RMS per
channel into 8 Ohms

Frequency
Response

Bandwidth from 5 Hz
to 25 kHz (=0dB/-3B)

Signal to Noise
Ratio

20Hz to 20kHz
unweighted > 102 dB

Total Harmonic
Distortion

0.2% THD from
20 Hz to 20 kHz

Channel
Separation

@ 1kHz >70dB

Overall
Dimensions

17 ¼” (43.81 cm) wide
2 ¼” (5.6 cm) high (including feet)
13 ½” (34.35 cm) deep

Weight

10.7 lb., 4.8 kg.

10.8 lb., 4.9 kg.

AC Mains:

100-120/220-240 V~,
50/60 Hz, 200 W

100-120/220-240 V~,
50/60 Hz, 300 W

100-120/220-240 V~,
50/60 Hz, 400 W

SPECIFICATIONS