Telex Speaker 309 series User Manual

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)  
 
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  
 
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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