JBL CONTROL 128WT Data Sheet

Control® 128W/WT

Professional Series – Premium In-Wall Loudspeaker

SPECSHEET

Key Features:

• Components:

• 200 mm (8 in) polymer-coated aluminum-cone woofer with pure butyl
rubber surround

• 25 mm (1 in) low-diffraction, swivel-aimable, pure titanium dome
tweeter

• High-slope crossover for natural midrange sound

• Extended bandwidth performance of 30 Hz – 20 kHz

• 60W continuous (120W program, 240W peak) power handling (128W)

Description:

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 required.

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 multi-tap 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 duty­cycle 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 new construction projects. As is the case with all Control
Contractor speakers, the baffles and grilles are paintable to match any décor.

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 low-frequency 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.

Specifications:

System

Frequency Range (-10 dB)
Continuous Power Capacity

3

Sensitivity
Nominal Impedance (128W) 8 ohms
Transformer Taps (128WT) 70V: 50W, 25W, 12W & 6W taps

Crossover Network 2nd order low-pass to the woofer and 2nd

Transducers

Low Frequency 200 mm (8 in) polymer-coated aluminum

High Frequency 25 mm (1 in) pure-titanium dome with

Physical

Termination Screw-down Euroblock-type connector,

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

Cutout Size (H x W) 300 x 225 mm (11.9 x 8.9 in), cutout

Maximum Wall Thickness 32 mm (1.25 in)
Net Weight (each) 128W: 2.6 kg (5.5 lb)

Shipping Weight (pair) 128W: 5.9 kg (13.0 lb)

Included Accessories » Cutout template

Optional Accessories

1

Half-space (mounted in-wall)

2

Continuous Pink Noise rating is IEC-shaped pink noise with a 6 dB crest factor

3

Half-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.

1

2

30 Hz – 20 kHz
240W Peak

120W Continuous Program
60W Continuous Pink Noise

90 dB SPL, 1W, 1 m (3.3 ft)

100V: 50W, 25W, & 12W taps

order high-pass to the tweeter

cone, pure butyl rubber surround

cloth suspension on low-diffraction swivel­mount with -10 degree aimability

max. wire size 14 AWG (1.5 mm)

in), 102 mm (4.0 in) front of wall to back
of speaker

template included

128WT: 3.3 kg (7.2 lb)

128WT: 7.8 kg (17.2 lb)

» Paint shield

» WB8

Rough-In Frame for new

construction installation to wallstuds

2

Control® 128W/WT

334 (13.1)

220 (8.7)

295 (11.6)

110 (4.3)

100 (4.0)

1.6)

110 (4.3)

100 (4.0)

110 (4.3)

1 00001000100

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Professional Series – Premium In-Wall Loudspeaker

SPECSHEET

Frequency Response: Normalized Horizontal Off-Axis:

10

0

-10

-20

-30
20

Measured on-axis with distance referenced to 1

meter at 1 watt, half-space (128W)

Impedance (128W): Normalized Vertical Off-Axis (up):

1 00001000100

20K

0°
10°
20°
30°
40°

10

0

-10

-20

-30
20

Beamwidth vs. Frequency: Normalized Vertical Off-Axis (down):

360

100

Beamwidth (Degrees)

Mounting Dimensions:

Dimensions in mm (inches)

Horizontal Beamwidth
Vertical Beamwidth

10

20

257 (10.1)

20K

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0

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-30
20

220 (8.7)

000010001001

000010001001

100 (4.0)

20K

20K

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© 2020 Harman International. www.jblpro.com Issued: 3/2020

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