Bosch ET90-W, ET90-R, ET90-N Specsheet

Fire Alarm Systems | ET90 High‑performance Speakers

ET90 High‑performance Speakers

www.boschsecurity.com

u 25 VRMS or 70 VRMS operation at a choice of seven

taps from 0.125 W to 8 W

u Cost‑effective two‑wire design

u Low average current draw

The ET90 Speakers provide high audio output with
clear audibility, and are designed to meet the critical
needs of the life safety industry for effective
emergency voice communications and tone signaling.
The high‑efficiency speakers are designed for
maximum output at a minimum wattage across a
frequency range of 400 Hz to 4 kHz.
A speaker mounting plate with a built-in level
adjustment allows for a faster and easier installation.
The two‑screw grill cover creates an attractive
appearance.

Certifications and approvals

Cooper Wheelock, Inc. holds these Listings and
Approvals:

Region

Certification

USA UL UEAY: Speakers (UL464)

CSFM see our website

Installation/configuration notes

Compatible Products

The following products are compatible with the ET90
Speakers:

u Extra protection and improved audibility through

sealed‑back speaker construction

u Easy wiring with screw terminals

Category Product ID Product Description

Control

D7022

1

Conventional FACP

Panels

D7024

2

Addressable FACP

D7024 Conventional FACP

D8024 Analog FACP

D9124 Addressable FACP

D10024A Analog FACP

FPD-7024

2

Addressable FACP

FPD-7024 Conventional FACP

These speakers are compatible with Wheelock SAFEPATH4 Facility
Communication Systems and Bosch Voice Evacuation Systems.

1

When used, the D7022 must be set for 24 VDC

operation.

2

When used with a D7039 Multiplex Expansion
Module, the D7024 and FPD-7024 become
addressable fire alarm control panels (FACPs).

Mounting

The low profile design of these notification appliances
creates more wiring space in standard electrical back
boxes. The speaker mounting plate incorporates a

2 | ET90 High‑performance Speakers

built‑in level adjustment feature allowing for a faster
and easier installation. These speakers mount on the
indicated back boxes for the indicated applications:

Conduit

Applications

Four‑inch square* •

SBB Back Box • •

Surface
Mounted

Flush Mounted

* Requires an SER extension ring.

Wiring

The input terminals accept wires with diameters
between 18 AWG and 12 AWG (ISO 0.75 mm2 and
4 mm2).

Parts included

Quant. Component

1 Speaker

1 Mounting Plate

1 Hardware pack

1 Literature pack

Technical specifications

Electrical

Ordering information

ET90‑N High‑Performance Speaker (nickel)

Nickel finish, 24 VDC device providing high audio
output with clear audibility, dual voltage capability
(25 VRMS or 70 VRMS), and field‑selectable taps from
1/8 W to 8 W

Order number ET90-N

ET90‑R High‑Performance Speaker (red)

Red, 24 VDC device providing high audio output with
clear audibility, dual voltage capability (25 VRMS or
70 VRMS), and field‑selectable taps from 1/8 W to 8 W

Order number ET90-R

ET90‑W High‑Performance Speaker (white)

White, 24 VDC device providing high audio output with
clear audibility, dual voltage capability (25 VRMS or
70 VRMS), and field‑selectable taps from 1/8 W to 8 W

Order number ET90-W

Accessories

SBB‑R Surface‑mount Back Box (red)

14 cm (5.5 in.) x 14.2 cm (5.6 in.) x 9.1 cm (3.6 in.)

Order number SBB-R

SBB‑W Surface‑mount Back Box (white)

14 cm (5.5 in.) x 14.2 cm (5.6 in.) x 9.1 cm (3.6 in.)

Order number SBB-W

Power Requirements

Voltage (input): 24 VDC nominal;

16 VDC or FWR to 33 VDC or FWR

Environmental

Relative Humidity: Up to 85%, non‑condensing

Temperature (Operating): +32°F to +120°F (0° to +49°C)

Mechanical

Dimensions (diameter x D): 7.25 in. x 2.9 in. (18.4 cm x 7.5 cm)

Material: Molded plastic

Speaker Volume at 10 ft (3 m)

0.125 (1/8) W: 75 dBA

0.25 (1/4) W: 78 dBA

0.5 (1/2) W: 81 dBA

1 W: 84 dBA

2 W: 87 dBA

4 W: 90 dBA

8 W: 93 dBA

SER‑R Square Semi‑flush Extension Ring (red)

12.7 cm (5 in.) square by 4 cm (1.5625 in.) deep

Order number SER-R

SER‑W Square Semi‑flush Extension Ring (white)

12.7 cm (5 in.) square by 4 cm (1.5625 in.) deep

Order number SER-W

SSB‑4 Ceiling Support Bridge

60.3 cm (23.75 in.) long by 16.5 cm (6.5 in.) wide

Order number SSB-4