Atlas Sound SIREN SD-370A User's Manual
Contents
1. COMPRESSION DRIVERS SD 70 FOR ELECTRONIC SIREN LOUDSPEAKERS SD 370A FEATURES e Choice of 58 or 100 Watt Power Handling for High Intelligibility and Sound Penetration e Heavy Duty Weatherproof Construction e Specifically Designed for Electronic Siren and Signaling applications e Accommodates Most Horns and Reflex Horns with Standard 1 18 Thread Pattern APPLICATIONS Depend on SD Series compression drivers for electronic siren and signaling needs on emergency and law enforcement vehicles as well as for use in stationary and mobile public address systems Models SD 70 and the patented SD 370A U S Patent 7 760 501 provide maximum power conversion with low amplifier output to fulfill high intelligibility and sound penetration requirements Model SD 70 rated at 58 Watts RMS is recommended for medium power systems such as commercial and industrial warning systems Model SD 370A rated at 100 Watts RMS is recommended for high power systems in public safety civil authority military or emergency medical applications Either unit can be used with most horns or reflex horns equipped with the industry standard 1 18 thread pattern GENERAL DESCRIPTION SD Series 58 and 100 Watt compression drivers are standard components of the Atlas Sound electronic siren loudspeaker assemblies Weatherproof units are ideal for use in police fire ambulance and utility vehicles Model SD 70 is recommended for medium powered systems2. SD 370A for high powered systems Drivers are equipped with a non fatiguing self aligning sound chamber assembly containing a 2 phenolic diaphragm with a nominal impedance of 11 Ohms Replacement head assembly Model K 70GB is available for field replacement of Model SD 70 Model K 370A for SD 370A Product series is suitable for use with matched amplifier and control equipment in systems requiring AMECA Automotive Manufacturer Equipment Compliance Agency Inc certification to General Services Administration specifications KKK A 1822C The SD 370A is constructed using an ALNICO magnet PECIFICATION POWER IMPEDANCE PLANE WAVE LOW FREQ LIMIT SOUND MODEL RATING FREQ RESPONSE FULL POWER LEVEL DIMENSIONS WEIGHT nominal 5dB 80 2 900Hz 5dB 111 x 90mm 2 3kg SD 370A 100 Watts 11 Ohms 100 2 500Hz 200Hz 117 avg 4 Dia x 346 H 7 7 lbs nominal 5dB 100 2 500Hz 5dB 118 x 102mm 3 5kg 25V into 11 Ohms 58 Watts 33V into 11 Ohms 100 Watts Measured on a plane wave tube at 1mW Specifications subject to change without notice 1601 JACK MCKAY BLVD ENNIS TEXAS 75119 U S A TELEPHONE 800 876 3333 FAX 800 765 3435 AtlasSound com 2006 Atlas Sound LP Printed in U S A ATS002453 RevA 8 06 SL7 1546 ARCHITECT amp ENGINEER SPECIFICATIONS Siren loudspeaker shall be Atlas Sound Model SD 70 SD 370A or power when measured on a plane wave tube at 1 mW Driver shall be ap
3. proved equal Assembly shall have a full range power capacity of capable of standard indoor outdoor use and be fully weather resistant Watts RMS Rated frequency response range shall be _ Units shall terminate in the industry standard 1 18 thread pattern Hz 5dB when measured on a plane wave tube at 1 Diaphragm material shall be high temperature molded phenolic mW Unit shall have a sound pressure output of dB at rated Y z lt a ae i i it e A ee ee pas ie inia es r W i R i a i pars er Sere Ty at p eee ee eh r Tepr tg L i ar a nin 1 Sig nae adhe ewe ewe needa E EEEE nn b Ln k ee J 1000 i rm i i I i i i a F i H crj SD 70 Impedance E oi ji K dg E i i I 1 EN EE S poemama ned SD 370A Impedance SD 370A Plane Wave Tube Response NOTE Plane wave tube measurements provide resistive loads to test drivers Actual frequency response of a driver horn combination will vary depending on the horn used with the driver Consult individual horn specification sheet for typical horn frequency response Specifications subject to change without notice 1601 JACK MCKAY BLVD ENNIS TEXAS 75119 U S A TELEPHONE 800 876 3333 FAX 800 765 3435 AtlasSound com 2006 Atlas Sound LP Printed in U S A ATS002453 RevA 8 06 SL7 1546
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