© 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
COMMERCIAL
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 Portlan Ave South, Burnsville, MN 55337, Phone: 952-884-4051, FAX: 952-884-0043
Canada 705 Progress Avenue, Unit 46,Scarborough, Ontario, Cana a, M1H2X1,Phone: 416-431-4975, 800-881-1685, FAX: 416-431-4588
Switzerland Keltenstrasse 11, CH-2563 IPSACH, Switzerlan , 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 e 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 In ustrial Bl g., 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 R 1, 05-10, Kampong Ubi In ustrial Estate, Singapore 408705, Phone: 65-746-8760, FAX: 65-746-1206
Mexico Av. Parque Chapultepec #66-201, Col. EI. Parque E o. 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 Portlan Ave South, Burnsville, MN 55337, Phone: 952-887-7424, FAX: 952-887-9212
Latin America 12000 Portlan Ave South, Burnsville, MN 55337, Phone: 952-887-7491, FAX: 952-887-9212
www.electrovoice.com • Telex Communications, Inc. • www.telex.com
