PANARAY®
MB4 Modular Bass
Loudspeaker
General Description
Technical Information
1Band-limited pink noise is applied to the MB4 speaker and amplified to a level at the loudspeaker
terminals corresponding to 1 Watt as referenced to the nominal impedance. The average sound
pressure level (dB-SPL) is measured at 1 meter from the speaker in an anechoic environment.
2Band-limited pink noise is applied to the MB4 speaker and amplified to a level at the loudspeaker
terminals corresponding to the long-term rated power handling of the speaker. The average sound
pressure level (dB-SPL) is measured at 1 meter from the speaker in an anechoic environment.
3Band-limited noise, meeting the IEC Standard #268-5 is applied to the MB4 speaker and amplified
to a level at the loudspeaker terminals corresponding to the power handling of the loudspeaker. The
loudspeaker must show no visible damage or measurable loss of performance after 100 hours of
continuous testing.
Enclosure construction: High-density
MultiFiber multi-layer wood particle
panel with high-impact foamed
polypropylene end caps.
The PANARAY MB4 Modular bass
loudspeaker is a 200W, low-frequency
loudspeaker that can be
used for indoor permanent installations
and for portable applications.
Multiple MB4 speakers can be
combined to effectively create a
larger single bass source resulting in
higher SPL.
The MB4 speaker’s output, bandwidth
and size make it useful as a
single bass unit, or as a modular
building block to match other Bose®
products in most professional
systems.
The MB4 speaker can also be
configured using MB4 Endfire or
Broadside bass array spacing,
described in the MB4 bass array
sheet (PC 031395), and the
PANARAY system digital controller to
create directional bass.
The PANARAY MB4 Modular bass
loudspeaker offers the following
features:
• Wide frequency range, from 40Hz
to 300Hz, which can be easily
matched to any Bose professional
loudspeaker
• High impact output for dominant
bass material
• Rugged portable enclosure with
metal grille and carrying handles
• Distinctive styling
• Recessed back plate with two
Speakon® NL4 connectors
The MB4 speaker can be used with
the Bose PANARAY system digital
controller to provide smooth accurate
spectral response over the entire
operating range of the system.
The MB4 speaker can also be used
with the Bose 1600 or 1800 amplifiers
in combination with the MB4
plug-in EQ card to provide active
equalization for the system.
Frequency Range
40Hz to 300Hz ±3dB
Sensitivity1
87dB-SPL @ 1W, 1m (pink noise)
Maximum Acoustic Output2
110dB-SPL, @ 1m (pink noise)
Dispersion
Omnidirectional at all frequencies
below 200Hz
Long-Term Power Handling3
200W continuous
Impedance
8Ω nominal
Mechanical Specifications
Dimensions:
18.1"D x 10.2"W x 26.7"H
(46 cm x 25.9 cm x 67.8 cm)
Weight: 45 lb (20 kg)
Connectors: Two (2) parallel-wired
NL4 connectors
Available colors: White and Black
A single MB4 speaker is well
matched in output and bandwidth to
one or two PANARAY 402®-II, 502®A
or MA12 loudspeakers, providing a
full-range solution for distributed or
portable systems.
Two or three MB4 speakers are a
good match for higher-output
loudspeakers, like the PANARAY
802®-III speaker, for engineered or
portable systems.
For larger spaces that require even
higher SPL, four or more MB4
speakers can be combined with each
PANARAY LT series loudspeaker.
1 110
2 116
3 119
4 122
Incremental bass output can be
achieved by combining multiple MB4
units in close proximity.
# of PANARAY MB4s Max Output (dB)
MB4 Loudspeaker
Combinations
POWER
Stereo Bank
802 Full Range
INPUT METERS
-dB
L
R
40 24 18 12 6 0 O
PANARAY DIGITAL SYSTEM CONTROLLER
PRESET LIMIT
UTILITY DELA
CHANNEL 2 GAIN
0
1
2
3
4 5 6
7
8
9
10 0
1
2
3
4 5 6
7
8
9
10
CLIPPING LEVEL
–1 dB
–3 dB
–12 dB
–40 dB
ON
CHANNEL 1 CHANNEL 2
1800–IV PROFESSIONAL POWER AMPLIFIER
I CHANNEL 2 GAIN
0
1
2
3
4 5 6
7
8
9
10 0
1
2
3
4 5 6
7
8
9
10
CLIPPING LEVEL
–1 dB
–3 dB
–12 dB
–40 dB
ON
CHANNEL 1 CHANNEL 2
1800–IV PROFESSIONAL POWER AMPLIFIER
I
Engineers’ and Architects’
Specifications
Warranty Information
All versions of the Bose PANARAY
MB4 Modular bass loudspeakers are
covered by a 5-year, transferable
limited warranty.
Safety and Regulatory
Compliance
All versions of the PANARAY MB4
Modular bass loudspeakers comply
with ANSI/EIA 636, Recommended
Loudspeaker Safety Practices and
EMC Directive 89/336/EEC and
Article 10 (1) of the Directive in
compliance with EN50081-1, EN
50082-1, as signified by the CE
mark.
The loudspeaker shall be a multiple
driver, low-frequency system with
matched active equalization as
follows:
The transducer complement shall
consist of four low-frequency drivers
of 5.2" (13.3 cm) diameter, mounted
symmetrically in vertical pairs. Each
driver shall have rated impedance of
8Ω and shall be wired in series/
parallel, resulting in composite
nominal impedance of 8Ω.
The loudspeaker system sensitivity
shall be 87dB-SPL in the 40Hz to
300Hz frequency range with measurements
referenced to 1W (2.85V)
pink noise input at 1m. The dispersion
shall be omnidirectional at all
frequencies below 200Hz. The power
handling capacity of the loudspeaker
shall be 200W continuous pink noise,
band-limited from 40Hz to 300Hz.
The loudspeaker shall be a vented
enclosure, tuned at 45Hz. The input
connectors of the PANARAY MB4
speaker shall consist of two parallel
Speakon® NL4 receptacles.
The enclosure of the MB4 loudspeaker
shall be composed of
high-density MultiFiber multi-layer
wood particle panel with high-impact
foamed polypropylene end caps. Its
outer dimensions shall be 18.1"D x
10.2"W x 26.7"H (46 cm x 25.9 cm x
67.8 cm). Its weight shall be 45 lb
(20 kg).
Full-Range System with Bose® Amplifers Full-Range System with PANARAY® system digital controller
The loudspeaker shall be the PANARAY
MB4 Modular bass loudspeaker.
The loudspeaker system shall be
used with a separate system controller,
to be connected to the input(s) of
the system power amplifier(s), or with
an MB4 speaker EQ card, to be
installed in a Bose 1600 or 1800
amplifier.
The PANARAY system digital controller
shall provide active electronic
equalization and crossover functions.
Installation
The MB4 Modular bass loudspeaker
can be used with the Bose® 1600 and
1800 amplifiers. The MB4 plug-in EQ
card must be used with these
amplifiers to provide active equalization
for the system.
When used with the PANARAY®
system digital controller, the MB4
speaker is also compatible with
industry standard amplifiers rated for
4Ω to 8Ω loads.
The MB4 speaker is packaged one
per carton.
Loudspeaker Configuration
Mixer
PANARAY system
digital controller
1800-VI amplifier
with 802®-III speaker
EQ card
Amplifier Amplifier
802-III
speaker
802-III
speaker MB4
speaker
MB4
speaker
MB4
speaker
802-III
speaker
802-III
speaker
Accessories
The MB4 single-unit wall mount
bracket is available from Bose.
Installation and user instructions are
included with the loudspeaker.
MB4 Modular bass loudspeakers are
designed to be wall mounted. They
can also be configured as bass
arrays, using the MB4 Endfire or
Broadside spacing in conjunction
with the Bose PANARAY system
digital controller.
No stands are required for portable
use.
1800-VI amplifier
with MB4 speaker
EQ card
Mixer
MB4
speaker
©2003 Bose Corporation, The Mountain
Framingham, MA 01701-9168
www.bose.com
Subject to change without notice.
269264 AM Rev.00 PC031394 JN30009