Telephones - Theovine
Telephones - Theovine
Telephones - Theovine
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Telecom Inc.<br />
Industrial <strong>Telephones</strong> • Equipment • Systems<br />
www.guardiantelecom.com<br />
Industrial<br />
Speakers<br />
Ceiling Loudspeakers<br />
ISO 9001 Certified<br />
Guardian Telecom is proud to be a supplier of the full line of DNH loudspeakers. Since<br />
1946 DNH has been a leading manufacturer of one of the world’s largest high quality<br />
range of loudspeakers for industrial and commercial applications. For off the shelf<br />
stock items to tailored products, contact a Guardian sales representative to discuss<br />
your specific project needs and the equipment that will meet your demands.<br />
Aluminum<br />
GB-640(T)<br />
ø 0.1” (2.5mm)<br />
ø 8.5” (214mm)<br />
Terminal<br />
ø 9.5” (241mm)<br />
3.1” (80mm)<br />
Transformer:<br />
Combined:<br />
50/100 Volt line<br />
5 (White) : 6 (Green) 50 V<br />
5 (White) : 8 (Red) 100 V<br />
Secondary nominal tappings:<br />
1 : 4 6.0 W<br />
1 : 3 3.0 W<br />
2 : 4 2.0 W<br />
1 : 2 1.5 W<br />
3 : 4 0.9 W<br />
2 : 3 0.5 W<br />
8 ohm version available<br />
Rec. ceiling hole: ø 214mm<br />
Specifications<br />
Material / Color Aluminum / RAL 9010<br />
Mounting<br />
4 metal strips<br />
Termination<br />
Spring clamps<br />
Weight<br />
3.2 lbs (1.2 kg)<br />
IP-rating (UL Equivalent) 0<br />
Max. / min. ambient temperature 194°F / -4°F (90°C / -20°C)<br />
Rated / max. power<br />
6W / 20 W<br />
SPL 1W/1m<br />
90 dB<br />
SPL rated power<br />
97 dB<br />
Effective freq. range<br />
60 – 20000 Hz<br />
Dispersion (-6dB) 1kHz / 4kHz 140° / 50°<br />
Options<br />
Impedance, color, label<br />
Sound pressure levels at different frequencies<br />
at 1W/1m 1/3 octave pink noise<br />
dBSPL<br />
SPL vs Freq<br />
110<br />
100<br />
90<br />
80<br />
70<br />
60<br />
20 Hz 50 100 200 500 1K 2K 5K 10K 20K<br />
Many DNH products are available in different colors, impedances and power ratings.<br />
Installation, Operation and Maintenance Procedures<br />
• When mounting the loudspeaker ensure that it is re-assembled<br />
in the same manner in which it was received.<br />
• Install outer ring into the hole by bending down 4 metal<br />
strips. Use nail / screw to prevent the ring from turning.<br />
Connect cable to terminal. Screw the loudspeaker grill<br />
clockwise into fixed position.<br />
• For optimum performance, always use the correct voltage /<br />
power and operate within the frequency limits as stated.<br />
• Take care when loudspeaker is energized (100 V).<br />
• This loudspeaker is supplied with a 2 year warranty<br />
against defective workmanship.<br />
The Manufacturer reserves the right to alter specifications without notice.<br />
Guardian Telecom Inc. Calgary, Alberta, Canada Phone: 403 258-3100 Toll Free (North America) : 1-800 363-8010 Facsimile: 403 253-4967 info@guardiantelecom.com www.guardiantelecom.com<br />
GB640T_Ref. Rev. 08.04 2008 GT 050409<br />
U-13
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