Sonance Stereo Amplifier 275 SE Series User Manual

Sonamp® Power Amplifers  
275 SE Series  
Sonamp® 275 SE Series Amplifiers  
Specifications  
Rated Power (20Hz – 20kHz) RMS:  
75 Watts per channel @ 8 ohms  
125 Watts per channel @ 4 ohms  
135 Watts per channel @ 2.7 ohms  
The new Sonamp® 275 SE (Sound Enhancement) amplifiers  
include a factory-installed Sonance BBE® Sound Enhancement  
SAT (Smart Amplifier Technology) module. The BBE process  
improves presence and detail of speakers, especially at lower  
listening volumes. This makes it particularly effective at improving  
the sound quality of distributed audio systems playing  
background music. BBE restores clarity and definition (or focus)  
to spoken voices, making paging systems easier to understand  
without having to run them at high volumes. The BBE process  
is so effective that it can even compensate for inferior sound  
from poor-quality source material or compressed sources like  
MP3, etc. In addition to manual control, the BBE effect can also  
be triggered on/off and the effect amount changed (+6dB or  
+9dB) by an external control voltage.  
Bridged Power (20Hz – 20kHz) RMS:  
250 Watts @ 8 ohms (275 SE only)  
Midband Power (1kHz, at Clipping) RMS: 114 Watts per channel @ 8 ohms  
140 Watts per channel @ 4 ohms  
168 Watts per channel @ 2.7 ohms  
Bridged Midband Power (1kHz) RMS:  
270 Watts @ 8 ohms (275 SE only)  
IHF Dynamic Power  
(20ms 1kHz Tone Burst)  
per IHF RS-490/3.2:  
120 Watts per channel @ 8 ohms  
194 Watts per channel @ 4 ohms  
239 Watts per channel @ 2.7 ohms  
IHF Dynamic Headroom  
+1.75 dB @ 8 ohms  
+1.9 dB @ 4 ohms  
+2.5 dB @ 2.7 ohms  
Features:  
Total Harmonic Distortion (2-channel mode): 0.05% 20Hz – 20kHz @ 8 ohms  
0.08% 20Hz – 20kHz @ 4 ohms  
• Factory-installed BBE SAT module in all versions  
0.15% 20Hz – 20kHz @ 2.7 ohms  
• High-current amplifier topology that can operate at 2.66 ohms  
Total Harmonic Distortion (Bridged mode): 0.05% 20Hz – 20kHz @ 8 ohms  
• Auto-resetting thermal protection shutoff; inrush current-  
limiting circuit; active current limit, short-circuit and speaker  
protection  
I.M. Distortion (SMPTE 4:1) @ 8 ohms:  
0.008% @ 1 watt  
0.015% @ 75 watts  
Signal to Noise Ratio:  
105dB below rated output  
(A-weighted)  
• Defeatable auto-on signal sensing with adjustable turn-on delay  
(2, 4, 6, 8, 12 seconds)  
Input Sensitivity:  
0.7 volts for rated output  
(75 watts @8 ohms)  
• Bridge/mono switch (not available on 275X3 SE)  
• Defeatable high-pass filter to protect in-wall volume controls  
Input Impedance:  
47k ohms, Min.  
BBE Effect Level:  
+9dB/+6dB/OFF  
120 VAC, 50/60Hz  
230VAC 50/60Hz  
675 watts (@ 4 ohms, full power)  
1330 BTU  
• Tamper-resistant, recessed input level and auto-on sensitivity  
controls; recessed power switch prevents accidental turn-off  
Power Requirement (120V versions):  
Power Requirement (230V versions):  
Power Consumption (all versions):  
Heat Output (at Full Power):  
Dimensions (W x H x D):  
• Signal present LEDs and protect/clipping LEDs for easy level setup  
• 275X3 SE has 3 built-in speaker switches and connections for  
3 pairs of speakers.  
• Available versions: 275 SE / 275 SE RMF,  
275X3 SE / 275X3 SE RMF,  
16¾" x 37/8" x 15¼"  
(425mm x 98mm x 387mm)  
275 SE (230V) / 275 SE RMF (230V)  
Dimensions (W x H x D):  
Rack-Mount Version  
19" x 3½" x 15¼"  
(483mm x 89mm x 387mm)  
Shipping Weight:  
24 lbs (10.9 kg)  
w w w. s o n a n c e . c o m  
212 Avenida Fabricante  
San Clemente, CA 92672-7531 USA  
(800) 582-7777 or (949) 492-7777  
FAX: (949) 361-5151  
Technical Support: (800) 582-0772  
©2005 Sonance. All rights reserved. Sonance, Sonamp and Smart Amplifier Technology are trademarks or registered trademarks of Dana Innovations.  
“BBE” and its designs are the registered trademarks of BBE Sound, Inc..  
06/07  
 

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