Sound

Reinforcement
Loudspeaker
- ProfessionalSeries

KeyFeatures:
b Sensitivity: 97 dB SPL, 1 W,
1 m (3.3 ft)
b Frequency Response ( + 4 dB):
55 Hz to 16.5 kHz
b High power handling (200 W,
pink noise)
b Components:
300 mm (12 in) Symmetrical
Field Geometry (SFG) low
frequency transducer
44 mm (13/4 in) pure titanium
diaphragm high frequency
compression driver
90” x 40” Flat-Front
Bi-Radial@ horn
b Lightweight, acoustically inert high-
impact enclosure Specifications:
b Integral attachment points for SYSTEM:
mounting flexibility Frequency Response ( + 4 dB): 55 Hz to 16.5 kHz
Power Canacitvl: 200 W
b Optional mounting hardware
Sensitivitv* _~~,
97 dB SPL 1 W. 1 m (3 3 ft)
Directivity Factor (Q): 8
Directivity Index (DI): 9
‘- Nominal Imoedance: 8 ohms
The Control 12SR’” is a compact
two-way loudspeaker system designed Crossover Frequency 2 kHz
for playback and sound reinforcement Polartty Positive Voltage to red termmal causes outward low
frequency cone motion
in fixed or portable applications
GENERAL
requiring a blend of outstanding high-
Enclosure Material: Polvstvrene structural foam
SPL performance and compact size.
Finish Black
Designed through extensive acousti- Dlmenalons 619 mm x 432 mm x 300 mm deep
cal analysis and modeling, the Control (24% in x 17 m x 12 in deep)
12SR enclosure features both a molded- Net Weight (each) 20 kg (44 Ibs)
in handle for portable applications Shlpping Weight 21 kg (46 lbs)
and multiple threaded attachment ACCESSORIES
points that accept a variety of optional MTC-101 Tripod Mountmg Adapter Allows the Control 12SR to be mounted to the JBL
installation hardware. MT4712A alummum tripod m either a vertical or
horizontal position
The Control 12SR contains a 300
MTC-102 Wall Mount Bracket Allows the Control 12SR to be mounted to any rlgld
mm (12 in) low frequency transducer vertical surface with a umque polymer ball and clamp
and a 44 mm (13/4in) high frequency design In addttion to ommdirectlonal movement about
pure titanium compression driver the ball, the speaker’s connecting wires may be run
internal to the clamp
fitted to a 90” x 40” Flat-Front Bi-
MTC-103 Ceiling Mount Bracket The same as the IMTC-102 except that It IS designed to be
Radial@ horn. Developed with the mounted to a rigid celling surface
latest in computer design and analysis MTC-106 Nylon protective covericarrymg case
techniques, the patented horn design
‘Rating based on test signal of IEC filtered random noise with a peak-to-average ratlo of 6 dB aght houra durarlon
provides uniform horizontal coverage ZAveraged from 500 H,! IO 2 5 kHr, for an mput of 2 83 \‘@ 8 ohms
of 90” from 2 kHz to I6 kHz.
JBL conrmuallv engages m research related to product ~mpro\emcnr Yen materlalc, producuon methods, and design
refinemenrs are mrroduced mto exlwng products wIthout “once d\ d routme exprcsslon of that pMosoph\ For rhl5 rea-
son, dnv currenrJBL product ma differ m some re~pect from lt~ pubhrhed descnptlon, but ~~111dlwavb equal or exceed the
or~gmal deugn apeclhcatlons unless orhervu.rse stared
b Control 12SR’”Sound ReinforcementLoudspeaker

The low frequency transducer features a 75 mm (3 in) Frequency Response at 1 W, 1 meter; Impedance
edgewound aluminum voice coil for high efficiency and
JBL’s Symmetrical Field Geometry (SFG) magnet assembly
for significantly reduced harmonic distortion. A rugged,
die-cast aluminum frame ensures long-term precision
alignment of the transducer motional and static assem-
blies. The pure titanium diaphragm high frequency com-
pression driver delivers exceptional sonic performance
and includes a precision-machined, copper-plated pole
piece for extended high frequency output.
To blend the low and high frequency components, the
Control 12SR uses a specially designed second-order net-
work with a transition frequency of 2 kHz. The network
incorporates high quality components throughout, includ- Horizontal and Vertical Beamwidth ( - 6 dB) vs. Frequency
ing bypass capacitors for improved transient response,
and includes power response compensation for the high
frequency horn/driver combination. A continuously vari-
able level control on the front of the Control 12SR allows
optimizing the system’s high frequency output for a broad
range of applications.
Although the Control 12SR is rugged enough to pass the
IEC 268-5 signal power test at a level of 200 watts for 8
continuous hours of operation, no compromises have
0
been made in sonic quality to achieve this power handling
capability. Particular emphasis has been given to projec-
tion and clarity in the vocal range, with the result being a
Directivity vs. Frequency
versatile system as useful in live sound reinforcement as it
is in recorded sound reproduction.

ArchitecturalSpecifications:
The loudspeaker system shall constst of a 300 mm (12 m) low fre-
quency transducer, Bi-Radial@ horn, and 44 mm (1% in) pure trtamum
diaphragm hrgh-frequency compression driver mounted to the horn
The second-order frequency drvrding network shall have a crossover
frequency of 2 kHz and shall utihze polypropylene bypass capacitors
to reduce hysteresis effects on the signal
Performance specrficattons of a typical production umt shall be as 0

follows. measured sensmvtty [SPL at 1 m (3 3 ft) with 2.83 V input,

swept from 500 Hz to 2 5 kHz] shall be at least 97 dB SPL. Frequency
response shall be within plus or mmus 4 dB from 55 Hz to 16 5 kHz.
Nominal impedance shall be 8 ohms, wrth mmimum impedance bemg Distortion vs. Frequency 10 W, Distortion Raised 20 dB
6.4 ohms @ 450 Hz. Rated power capacity shall be at least 200 watts
continuous pink noise, based on a test srgnal of filtered random noise
conformmg to internattonal standard IEC 268-5 (pink noise wrth 12
dB/octave rolloff below 40 Hz and above 5 kHz wtth a peak-to-average
ratto of 6 dB), etght hours duration
The entire enclosure shall be manufactured of molded high impact
polystyrene structural foam, and shall incorporate integral attachment
points to accept mountmg brackets Optional mounting brackets shall
be available for both temporary and permanent installation of the
loudspeaker at various angles to the mountmg surface.
Cabinet fmtsh shall be satin black wrth black metal grille and black
rubber corner protectors, and overall outsrde drmensrons shall be no
greater than 619 mm (24% in) x 432 mm (17 m) x 300 mm (12 m)
The system shall be the JBL Model Control 12SR

JBL Professional
8500 Balboa Boulevard, PO. Box 2200
Northridge, California 91329 U.S.A.
7193 10M
H A Harman International Company P1024