Electro-Voice 405-4T - Manual

© Telex Communications, Inc. 02/2001

Part Number 38109-934 Rev A

U.S.A. and Canada only.

For customer orders, contact the Customer Service department at

800/392-3497 Fax: 800/955-6831

For warranty repair or service information, contact the Service

Repair department at 800/685-2606

For technical assistance, contact Technical Support at 866/78 AUDIO

Please refer to the Engineering Data Sheet for warranty information.

Specifications subject to change without notice.

Beamwidth vs Frequency

405 Series

4-inch Full-Range

High Performance

Ceiling Loudspeakers

C O M M E R CIA L

General Product Description

The EV (Electro-Voice®) Model 405-8H and 405-4T
loudspeakers are compact 4" speakers that provide the
utmost in performance obtainable from speakers of this size.
Clear, intelligible speech and good music reproduction are
ensured because of the extended 60 - 15,000 Hz range.

The loudspeaker has an 8-ohm voice coil. The model 405-4T
has a factory mounted matching transformer allowing the
loudspeaker to be run from 70.7 V or 100 V transmission
lines, drawing 0.5, 1, 2, or 4 watts.

These quality loudspeakers are designed for continuous,
trouble-free service. The die cast aluminum frame houses
a magnetic structure fabricated of heavy gauge steel. The
small size of the speakers allows either front or rear
mounting in walls, partitions, ceilings, and into volumes as
low as 0.1 cubic feet.

Impedance Response

Directivity and Q

Frequency Response

Power Rating

: ............. 16 watts continuous pink noise (above

50 Hz)

Frequency Response

: ................................................... 60 - 15,000 Hz

Pressure Sensitivity:

........................................................... 90 dB SPL

measured at one meter on axis with 1 watt input of pink noise, band-limited
from 500 - 3000 Hz (Ref.: 20 µPa)

Maximum SPL

: .................................................. 102 dB for 16W @ 1M

Impedance

: ................................................................................. 8 ohms

70.7/100 Volt Taps

: ................................ 0.5, 1, 2, 4 watts (405-4T only)

Insertion Loss

: ............................................ 1.0 dB max. (405-4T only)

Transformer Frequency Response

: ............... ±1 dB, 100 - 10,000 Hz

........................................................................................... (405-4T only)

Nominal Free-Air Cone Resonance

: ........................................ 120 Hz

Nominal Distribution Pattern

: ......................................................... 90°

*Distribution Pattern With Polar to Planer Correction

:

107' at 2 kHz 69' at 4 kHz

Voice Coil Diameter

: .................................................. 25.4 mm (1.0 in.)

Magnet Structure:

Magnet Type:

....................................................................... Ferrite

Magnet Weight:

............................................................ 9.4 ounces

Flux Density:

.................................................................. 1.05 tesla

Construction:

Frame (Basket):

.......... Structurally reinforced die-cast aluminum

Cone:

.......................................................................... Molded fiber

Cone Suspension

: ............................. High-compliance foam surround

Specifications:

Voice Coil

: ................................................................................ Copper

Voice Coil Support Material

: ............................................. Kapton®**

Cone Excursion

: ........................................ 0.125" max. peak to peak

Terminals:

Speaker :

............................... 5.2 mm (0.205 in.) spade lug type

Transformer:

.................................................................... Pigtails

Mounting Data:

Baffle Opening

:

96.8 mm (3.812 in.) diameter (rear mounted)

104.8 mm (4.125 in.) diameter (front mounted)

Mounting Bolt Centers:

4 equally spaced slots 90° apart on 120.7 mm (4.75 in.) diameter
circle

Dimensions

:

Diameter:

................................................... 134.9 mm (5.312 in.)

405-8H:

............................................... 54.0 mm (2.125 in.) depth

405-4T:

............................................. 103.2 mm (4.063 in.) depth

Weight:

405-8H:

........................................................ 2 lbs 1 oz. (0.94 kg)

405-4T:

.......................................................... 2 lbs 9 oz. (1.2 kg)

Color

: .......................................................................................... Black

** Kapton® is a registered trademark of DuPont.

USA

12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-884-4051, FAX: 952-884-0043

Canada

705 Progress Avenue, Unit 46,Scarborough, Ontario, Canada, M1H2X1,Phone: 416-431-4975, 800-881-1685, FAX: 416-431-4588

Switzerland

Keltenstrasse 11, CH-2563 IPSACH, Switzerland, Phone: 41/32-331-6833. FAX: 41/32-331-1221

Germany

Hirschberger Ring 45, D94315, Straubing, Germany, Phone: 49 9421-706 392, FAX: 49 9421-706 287

France

Parc de Courcerin, Alle Lech Walesa, Lognes, 77185 Marne La Vallee, France, Phone: 33/1-6480-0090, FAX: 33/1-6480-4538

Australia

Unit 23, Block C, Slough Business Park, Slough Avenue, Silverwater, N.S.W. 2128, Australia, Phone: 61/2-9648-3455, FAX: 61/2-9648-5585

Hong Kong

Unit E & F, 21/F, Luk Hop Industrial Bldg., 8 Luk Hop St., San PO Kong, Kowloon, Hong Kong, Phone: 852-2351-3628, FAX: 852-2351-3329

Japan

2-5-60 Izumi, Suginami-ku,Tokyo, Japan 168, Phone: 81-3-3325-7900, FAX:81-3-3325-7789

Singapore

3015A Ubi Rd 1, 05-10, Kampong Ubi Industrial Estate, Singapore 408705, Phone: 65-746-8760, FAX: 65-746-1206

Mexico

Av. Parque Chapultepec #66-201, Col. EI. Parque Edo. Mex. 53390, Phone: (52) 5358-5434, FAX: (52) 5358-5588

UK

4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: 44 181 640 9600, FAX: 44 181 646 7084

Africa, Mid-East

12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7424, FAX: 952-887-9212

Latin America

12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7491, FAX: 952-887-9212

www.electrovoice.com • Telex Communications, Inc. • www.telex.com