309 Series
General Product Description
8-inch Ceiling
Loudspeakers
The Electro-Voice® 309 series loudspeaker systems are two-way
loudspeakers with 8-inch low-frequency cones and high temperature
voice-coil assemblies coaxially mounted with wide-dispersion cone
tweeters. The dual magnet construction allows each speaker to be
structurally, magnetically, electrically and mechanically independent
of the other. The 309-8A/309-4T/309-8T utilize a single section
crossover network, centered at 3,000 Hz, which provides 6 dB of
attenuation for the tweeter outside its operating range. The 309-4T
is provided with a 25/70.7/ 100-V line transformer that offers <1 dB
insertion loss and a selection of 0.5-, 1-, 2- and 4-W taps.
COMMERCIAL
The 309-8T is features a 70.7/100-V line transformer that offers <1
dB insertion loss and a selection of 1-, 2-, 4- and 8-W taps.
These components are designed to work together as a complete
system of in-ceiling loudspeakers and accessories. They provide
wide dispersion, high-efficiency, high- maximum output, ease of
installation and wide-range reproduction of music or voice.
WB versions come complete with a pre-mounted ceiling grille.
Architects’ and Engineers’ Specifications
The loudspeaker shall have an 8-inch low-frequency cone radiator
and a coaxially mounted, wide-dispersion cone tweeter. The
loudspeaker shall meet the following criteria: AES power rating shall
be 16 watts of band-limited pink noise (85 Hz to 18 kHz, 6 dB crest
factor). Frequency response will be uniform from 85 Hz to 18 kHz
on both the transformer and non-transformer versions. Pressure
sensitivity, 96 dB SPL at 1 meter (94 dB at 4 feet) on axis with one
watt of band-limited pink noise from 500 Hz to 3 kHz (ref. 20 mPa).
Minimum impedance, 6.0 ohms.
The loudspeaker shall be 206.5 mm (8.13 in.) in diameter and
82.5 mm (3.25 in.) deep. Weight shall be 1.3 kg (2.8 lb) [309-8A],
1.4 kg (3.1 lb) [309-4T] and 1.45 kg (3.2 lb) [309-8T]. The 309-4T
shall have a 70-V transformer with taps at 0.5, 1, 2 and 4 watts.
The 309-8T shall have a 70-V transformer with taps at 1, 2, 4 and
8 watts. The maximum insertion loss shall be < 1.0 dB. The
loudspeakers shall be the EV (Electro-Voice®) 309SA; and 309-4T
and 3098T with transformer.
Specifications:
Pressure Sensitivity: ............................................................ 96 dB SPL
(1 W, 500 Hz - 3 kHz) re: 20 µPa
Volume Displacement VD: .................................................... 1.61 in.3
Reference Efficiency: ............................................................. 2.87%
Speaker Frame: ...........................................22-gauge stamped steel
Finish: ........................................................................................ Black
Dimensions:
Frequency Response: ................................ 85 Hz - 18 kHz (see Fig. 1)
Power-Handling Capacity: ...................................................... 16 watts
85 - 18 kHz, bandlimited pink noise, 6 dB crest factor
Impedance:
309-8A / 309-4T
Nominal:........................................................................... 8 ohms
Minimum: .......................................................... 6 ohms (11 kHz)
Maximum Long-Term Output: ........................................... 108 dB SPL
(16 W/1 m) re: 20 mPa)
Loudspeaker Diameter: ............................. 206.5 mm (8.13 in.)
Height: ........................................................... 82.6 mm (3.25 in.)
Net Weight:
309-8A: ...................................................................1.3 kg (2.8 lb)
309-4T: ...................................................................1.9 kg (4.1 lb)
309-8TWB: .............................................................2.3 kg (5.0 lb)
Shipping Weight:
Crossover Network: ................................................................. 3,000 Hz
with 6 dB-per-octave tweeter protection
Input Terminals: ................................................ .212-in. push terminals
309-8A - Theile-Small Parameters
309-8A: ...................................................................1.5 kg (3.3 lb)
309-4T: ...................................................................2.1 kg (4.6 lb)
309-8TWB: .............................................................2.5 kg (5.5 lb)
Transformer Input:
Free Air Resonance, fs: .............................................................. 110 Hz
Equivalent Volume Compliance,VAS: ......................................... 0.92 ft3
Total Q, QTS: ..................................................................................... 0.94
Electrical Q, QES: ............................................................................. 1.16
Mechanical Q, QMS: ........................................................................ 5.03
309-4T ............................................. 25/70.7 (100 volt operation)
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309-4T
25V
70V
Yellow
Green
Blue
100V
Green
Blue
4.0W
2.0W
Brown
Red
1.0W
Orange
Yellow
Black
White
Black
Violet
N/A
.05W
Violet
Black
White
Black
Common
8 Ohms
Common
Black
White
Black
309-8T
70V
Brown
Red
100V
8.0W
Red
Orange
Yellow
N/A
4.0W
2.0W
Orange
Yellow
Black
White
Grey
1.0W
Common
8 Ohms
Common
Black
White
Grey
Wiring Diagam
Dimensions
Distortion
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Beamwidth vs Frequency
Impedance Response
Directivity and Q
Amplitude Response
309-4T, 309-4TWB
309-8T, 309-8TWB
Power
0.5W
1.0W
2.0W
4.0W
8.0W
70V
100V
70V
10,000 ohms
5,000 ohms
2,500 ohms
1,250 ohms
N/A
Yellow
Orange
Red
20,000 ohms
Green
Yellow
Orange
Red
N/A
N/A
Yellow
Orange
Red
10,000 ohms
5,000 ohms
2,500 ohms
N/A
5,000 ohms
2,500 ohms
1,250 ohms
625 ohms
Brown
N/A
N/A
Brown
America:
USA: Telex Communications Inc. 12000 Portland Ave South, Burnsville, MN 55337, USA, Phone: 952-884-4051, Fax: 952-884-0043
Western Canada: PAG Canada. 23 Hawkesbury Crescent, Winnipeg, MB R3P-1Y6, Canada, Phone: 888-850-8811, Fax: 204-489-7614
Eastern Canada: PAG Canada. 728 Eglinton Ave. East, Toronto, ON M4G 2K7, Canada, Phone: 800-881-1685, 416-431-4975, Fax: 416-431-4588
Québec: Acoustik GE Inc. 5715 Kincourt, Montréal, PQ H4W 1Y7, Canada, Phone: 866-369-2864, 514-369-2864, Fax: 514-487-9525
Mexico: Telex Communications de Mexico. Parque Chapultepec 66-201, Naucalpan, Edo. Mex. 53390, Mexico, Phone: +52 555 358-5434, Fax: +52 555 358-
5588
Latin America: Telex Communications Inc. 12000 Portland Ave South, Burnsville, MN 55337, USA, Phone: 952-887-7491, Fax: 952-887-9212
Europe:
Germany: Telex EVI Audio GmbH. Hirschberger Ring 45, D 94315, Straubing, Germany, Phone: +49 9421-706 0, Fax: +49 9421-706 265
France: EVI Audio France S.A. Parc de Courcerin, Allée Lech Walesa, F 77185 Lognes, France, Phone: +33 1-6480-0090, Fax: +33 1-6006-5103
UK: Telex Communications Ltd. 4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: +44 208 646 7114, Fax: +44 208 640 7583
U.S.A. and Canada only.
For customer orders, contact the Customer Service
department at
Africa & Middle-East: Telex EVI Audio GmbH. Hirschberger Ring 45, D 94315, Straubing, Germany, Phone: +49 9421-706 0, Fax: +49 9421-706 265
800/392-3497 Fax: 800/955-6831
For warranty repair or service information, contact the Service
Repair department at 800/685-2606
Asia & Pacific Rim:
Japan: EVI Audio Japan Ltd. 5-3-8 Funabashi, Setagaya-Ku, Tokyo, Japan 156-0055, Phone: +81 3-5316-5020, Fax: +81 3-5316-5031
Australia: EVI Audio (Aust) Pty Ltd. Slough Business Estate, Unit 23, Silverwater, N.S.W. 2128, Australia, Phone: +61 2-9648-3455, Fax: +61 2-9648-5585
China: EVI Audio (HK) Ltd. Unit E & F, 21F, Luk Hop Industrial Bldg., 8 Luk Hop St., San PO Kong, Kowloon, Phone: +852 2351-3628, Fax: +852 2351-
3329
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.
Singapore: Telex Pte. Ltd. 3015A Ubi Road 1, 05-10 Kampong Ubi Industrial Estate, Singapore 408705, Phone: +65 746-8760, Fax: +65 746-1206
© Telex Communications, Inc. 02/2002
Part Number 38109-863 Rev B
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