JBL Control®128W/WT Premium In-Wall Loudspeaker
• 200 mm (8 in) polymer-coated
aluminum-cone woofer with pure butyl
• 25 mm (1 in) pure-titanium dome lowdiffraction
swivel aimable titanium
• High-slope crossover for natural midrange
• Extended bandwidth performance of
30 Hz – 20 kHz.
• 60W continuous (120W program, 240W
peak) power handling (128W).
The Control 128W is a premium in-wall
speaker within the JBL Professional Control®
Contractor line designed for applications such
as foreground music, boardrooms, reception
areas, airports, convention centers, cruise
ships, retail outlets, restaurants, museums,
surround locations, or any critical listening
application where top performance from a
loudspeaker with minimal visual impact is
The high-performance woofer features a
polymer-coated aluminum cone for high
performance down to 30 Hz and pure butyl
rubber surround for long-life and high
reliability along with extended-polepiece
magnet design for long excursion and tight,
low bass. The pure titanium dome high
frequency driver is loaded with a built-in
EOS™ (Elliptical Oblate Spheroidal)
waveguide for low distortion and a smooth
frequency response. A low-diffraction swivelmounting
system enables the user to direct
high frequencies where required without the
diffraction distortion inherent in other aimable
tweeter designs. A high-slope crossover
network maintains natural midrange sound
and produces more even coverage
throughout the listening area. The optional
Control 128WT version includes a multitap
transformer for 70V/100V systems.
The Control 100 Series speakers are voiced
similarly to other JBL Control Contractor
models, allowing mixing with surface-mount
and in-ceiling speakers within a single
listening space. The premium sound quality
makes these loudspeakers ideal for critical
listening environments, yet they are high
power and rugged enough to handle venues
requiring high-SPL, heavy duty-cycle music.
The speaker fits into the wall space of
ordinary stud-wall construction. An optional
rough-in frame is available for installing the
speakers into standard stud walls in newconstruction
projects. As is the case with all
Control Contractor speakers, the baffles and
grilles are paintable to match any décor.
Frequency Range (-10 dB)1: 30 Hz - 20 kHz
Continuous Power Capacity2: 240 Watts Peak
120 Watts Continuous Program
60 Watts Continuous Pink Noise
Sensitivity3: 90 dB SPL, 1W, 1 m (3.3 ft)
Nominal Impedance (128W): 8 ohms
Transformer Taps (128WT): 70V: 50W, 25W, 12W & 6W taps
100V: 50W, 25W, & 12W taps
Low-Frequency: 200 mm (8 in) polymer-coated aluminum cone, pure butyl rubber surround.
High-Frequency: 25 mm (1 in) pure-titanium dome with cloth
suspension on low-diffraction swivel-mount with -10 degree aimability.
Termination: Screw-down Euroblock-type connector. Max. wire size 14 AWG (1.5 mm)2
Crossover Network: 2nd order low-pass to the woofer and 2nd order high-pass to the tweeter.
Optimum Air Cavity Behind Speaker: 40 to 80 liters (1.4 to 2.8 cu ft)
Outside Dimensions (H x W x D): 334 x 257 x 110 mm (13.1 x 10.1 x 4.3 in), 102 mm (4.0 in) front of wall to back of speaker.
Cutout Size (H x W): 300 x 225 mm (11.9 x 8.9 in),Cutout template included.
Maximum Wall Thickness: 32 mm (1.25 in)
Net Weight (ea): 128W: 2.6 kg (5.5 lb), 128WT: 3.3 kg (7.2 lb)
Shipping Weight (pair): 128W: 5.9 kg (13.0 lb), 128WT: 7.8 kg (17.2 lb)
Included Accessories: Cutout template & paint shield
Optional Accessories: MTC-128RIF Rough-In Frame for new construction
installation to wallstuds.
1Half-space (mounted in-wall)
2Continuous Pink Noise rating is IEC-shaped pink noise with a 6 dB crest factor.
3Half-space (mounted in-wall), average 100 Hz to 10 kHz
JBL continually engages in research related to product improvement. Some materials, production methods and design
refinements are introduced into existing products without notice as a routine expression of that philosophy. For this
reason, any current JBL product may differ in some respect from its published description, but will always equal or
exceed the original design specifications unless otherwise stated.
Rear Air Cavity Considerations
The Control 128W is designed to function over a wide span of rear air cavity sizes within
the wall. The optimum air cavity (sometimes called “loading volume”) for fullest lowfrequency
performance is between 40 to 80 liters (1.4 to 2.8 cu ft). In a wall with studs
located 16-inches on-center, this approximately equals a 46-inch to 92-inch high space. It is
recommended that the air cavity behind the speaker be sealed by the use of silicone sealant
or similar material to help create an air-tight seal and minimize wall noise.
SS Control 128WT