S
b
121 300-Watt Nonpowered Bass Module
S
b
121 300-Watt Nonpowered Bass Module
SPEAKERS- Portables
Part Number 534718 — 9744
600 Cecil Street, Buchanan, MI 49107
616/695-6831, 616/695-1304 Fax
©EVI Audio 1997 • Litho in U.S.A.
Specifications:
Axial Frequency Response (swept
sine-wave input, 4 volts at 10 feet on
axis, anechoic environment, normal-
ized for
1 watt/1 meter; see Figure 1):
50-500 Hz
Low-Frequency 3-dB-Down Point:
50 Hz
Usable Low-Frequency Limit with
Xp200A Controller (10-dB-down
point):
43 Hz
Half-Space Reference Efficiency:
4.0%
Long-Term Average Power-Handling
Capacity per ANSI/EIA RS-426-A
1980 (see Power-Handling Capacity
section)
300 watts
Maximum Acoustic Output:
11.1 watts
Sensitivity (SPL at 1 meter, 1 watt
input, anechoic environment, band-
limited pink-noise signal, 50 to 200
Hz):
95 dB
Dispersion Angle Included by 6-dB-
Down Points on Polar Responses:
Essentially omnidirectional
Distortion, 0.1 Full Power Output,
Second Harmonic,
100 Hz: 5.3%
Third Harmonic,
100 Hz: 1.9%
Distortion, 0.01 Full Power Output,
Second Harmonic,
100 Hz: 1.9%
Third Harmonic,
100 Hz: <0.01%
Transducer Complement:
DL12Sx 12-inch woofer
Box-Tuning Frequency:
60 Hz
Recommended Crossover Frequency:
100 to 200 Hz (12-dB-per-octave
minimum slope)
Impedance,
Nominal:
8 ohms
Minimum:
6 ohms
Input Connectors:
Paralleled Neutrik Speakon
®
NL4MP
and
1
/
4
-in. phone jack (allows parallel-
ing of multiple speakers)
Enclosure Materials and Colors:
Black polypropylene structural foam
Supplied Accessories:
Additional Neutrik Speakon
®
NL4MP
and
1
/
4
-in. phone jack (see Sb121
Connections section); Suspending
System 200
TM
Loudspeakers instruc-
tion manual
Optional Accessories:
100BK mounting stand
Mb100 eyebolt attachment kit
Mb200 installation kit
Mb300 horizontal array kit
OmniMount
®
Series 100 mounting
hardware
1
VPCSx protective cover
PDSx padded cover
F200 monitor foot
Other Product Available for Enhance-
ment of Sb121 Performance:
Xp200A electronic system controller
Attachment Points:
Four metric insert (M8 x 1.25) (see
Figure 2 and Suspending Sb121
Enclosures section)
Dimensions (see Figure 2),
Height:
586 mm (23.1 in.)
Width:
429 mm (16.9 in.)
Depth:
312 mm (12.3 in.)
Net Weight:
14.6 kg (32.2 lb)
Shipping Weight:
16.0 kg (35.3 lb)
_____________________
1. Available through OmniMount Systems, Inc. OmniMount
®
is a registered trademark of OmniMount Systems, Inc.
