Lowell WB-4 Datasheet

Lowell Manufacturing Company • 100 Integram Drive • Pacific, Missouri 63069 U.S.A.

Call 800.325.9660, 636.257.3400 • Fax [phone] • Click www.lowellmfg.com

Lowell makes every effort to provide accurate information and reserves the right to change specifications and/or improve manufacturing methods.

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Printed in U.S.A. © 11-13-09

WB-4

Steel Grille with Screw-mount Installation for 4” Speakers

WB-4

Steel grille for screw-mount installation

Grille Specifications and Companion Mounting Accessories (order separately)

Grille Speaker Grille Mounting Material Color Backbox or Mtg. Ring Choices + T-Bridge or Rails

Model Size* Size Provisions (Choose one, plus tile bridge or (if required for

rails if required.) suspended ceilings)

WB-4 4" 7.25" Dia 4 studs + 4 screws Steel White CP4, DX104................................................................LBS4-DX or SS Series rails

PR4 (mounting ring) ..................................................LBS4-DX or SS Series rails

No backbox ................................................................LBS4-R

*Lowell offers a selection of 4" speakers with factory wired 70V or 25V transformers - see list in the Description paragraph or get specifications on the website.

Description

Lowell grille Model WB-4 is the industry standard when it
comes to steel ceiling grilles for 4" loudspeakers. Its
clean, contoured edge appearance and economical cost
makes it popular for installation in offices, hotels,
schools, airports, medical, retail, and commercial facili­ties all over the world.

Grille is precision formed from a single piece of 20­gauge steel with a punched center and beveled edge for
attractive ceiling installation. Model WB-4 features four
8-32 x 3/4" welded studs with palnuts for concealed
mounting of a standard 4” (EIA 5”) speaker. It is addition­ally equipped with four white 8-32 x 1-1/2" Phillips-head
screws for attaching the speaker-grille assembly to the
backbox or mounting ring (order separately - see page

2). The grille is finished in white powder epoxy for long
lasting quality appearance.

Lowell offers a selection of 4" speaker drivers with
optional 70V or 25V transformer for distributed music
and voice paging. Popular 4" drivers include Model 4A30
(30W coaxial) and JR410 (15W high compliance cone).

A & E Specifications

The grille for 4" speaker drivers shall be Lowell Model
____ (WB-4). It shall be fabricated one-piece 20-gauge
steel reinforced with a peripheral flange. The grille diam­eter shall be 7.25" with a shallow mounting projection of

0.25". Model WB-4 shall include welded studs for mount­ing specified 4" (EIA 5”) speaker. Each grille shall also
have four 0.218" holes spaced at 90 degree intervals on
a 5.625" bolt circle plus four 8-32 x 1-1/2” white Phillips­head screws for mounting the speaker/grille assembly to
specified backbox or mounting ring. The grille shall be
finished in white powder epoxy and include white screws
for backbox installation.

Companion backbox or mounting ring shall be Lowell Model
_________(DX104, CP4, PR4). Companion tile bridge or
channel rails for suspended installations shall be Lowell
Model________ [LBS4-DX, LBS4R (for applications without
backbox), SS24 or SS30 rails].

.218"

5.625"

FRONT

0.25"

7.250"

(4) 8-32 studs for mounting
to 4" (EIA 5") speakers

REAR

WB-4

Steel Grille with Screw-mount Installation for 4” Speakers

Lowell Manufacturing Company • 100 Integram Drive • Pacific, Missouri 63069 U.S.A.

Call 800.325.9660, 636.257.3400 • Fax [phone] • Click www.lowellmfg.com

Lowell makes every effort to provide accurate information and reserves the right to change specifications and/or improve manufacturing methods.

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AUDIO

12”/10”

Speakers &

Accessories

8”

Speakers &

Accessories

6”

Speakers &

Accessories

4”

Speakers &

Accessories

Horn

Speakers &

Accessories

Masking

Speakers &
Generators

Control

Accessories

& Electronics

Companion mounting accessories for grille Model WB-4 (order separately)

Companion Backboxes (order separately)

Backbox Mounts Backbox Features Mounts
Model Speaker Size Size* Grille (order separately)

DX104 4" 10"Dia. x 6.75"D 0.3 cu.ft., 1.5" thick batting WB-4
CP4 4” 6.3”Dia x 4”D Compact size WB-4
PR4 (mounting ring) 4” 6.3”Dia x 0.5”D Mounts in shallow spaces WB-4

*

Diameter measurement is the outside of the backbox cylinder.

DX104

5.625"

5.188"

7.34"

4.0"

0.5"

6.31"

1/2" - 3/4" Knockouts

0.5"

5.625"

5.188"

7.34"

6.31"

CP4

PR4

LBS4-DX, LBS4-R

SS Series

Tile Bridge and Rail Details (order separately)

LBS4-DX 23.75”L T-bridge mounts 4in system with round backbox
LBS4-R 23.75”L T-bridge mounts 4in system with WB4 grille only (no backbox)
SS24 24”L channel rail pair
SS30 30”L channel rail pair

6.75"

10"

6.31"

3/8"

1.5" thick acoustic lining

1/2" - 3/4"

Flexible steel hanger straps

5.625

Grilles - Ceiling / Wall