User manual ALTEC LANSING 1594C POWER AMPLIFIER

[. . . ] Altec Lansing's high performance model 4156-8A woofer is a 15 inch / 380 mm speaker with a robust corrosion-resistant die-cast frame and a weather-resistant cone for maximum durability in all environments. The unique on-board crossover network provides simplistic addon operation without the need for an additional power amplifier channel or the costs associated with additional amplification and an active crossover. The charcoal grey or white painted cabinet blends into most backgrounds, or it can be easily painted to match any décor. [. . . ] Altec Lansing includes neutral grille cloth with each speaker, allowing you to dye the cloth to integrate the speaker into the surroundings. The cabinet also features internal hanging points to facilitate permanent installation in either a horizontal or vertical orientation. FREQUENCY RESPONSE 1, 2 48 Hz - 800 Hz (±3 dB) USABLE LOW FREQUENCY LIMIT (-10 dB) 1, 2 38 Hz SENSITIVITY 3 100 dB SPL POWER HANDLING 4 250 W continuous; 1, 000 W peak MAXIMUM OUTPUT (1 m) 5 124 dB SPL continuous, 130 dB SPL peak TRANSDUCER COMPONENTS 1x 15 in. Woofer in a Vented Enclosure (4156-8A) IMPEDANCE 7 Nominal: 8. 0 Ohms Minimum: 6. 5 Ohms at 45 Hz CROSSOVER FREQUENCY Passive LF - HF: 200 Hz HARMONIC DISTORTION 8 1% rated power 10% rated power 2nd Harmonic 0. 33% 2nd Harmonic 1. 40% 3rd Harmonic 0. 36% 3rd Harmonic 0. 61% THD 0. 65% THD 1. 87% INPUT CONNECTIONS 1x 2 position barrier strip and 2x NL4 High Pass Output: 1x 2 position barrier strip and 1x NL4 CONTROLS Low Pass On/Off switch High Pass On/Off switch ENCLOSURE MATERIALS & FINISH 18 mm, 13 ply Poplar Plywood Finished with Charcoal Grey or White Catalyzed Polyurethane SUSPENSION SYSTEM 9 Working Load Limit (maximum weight applied to uppermost mounting point): 250 lbs. (113. 6 kg) (12) 3/8 in. -16 Threaded Mounting Suspension Points (3 each top & bottom and 2 each sides & back) DIMENSIONS 30. 50 in. Wilshire Blvd. , Suite 362 · Oklahoma City, Oklahoma 73116 · Phone: 1-405-848-3108 · Fax: 1-405-848-3217 · www. altecpro. com ARCHITECTS & ENGINEERS SPECIFICATION The loudspeaker system shall be a low frequency multipurpose type consisting of a 15 inch / 380 mm cast frame loudspeaker component with a weather resistant cone. The internal passive crossover network shall be a switchable dual-section, 12 dB/octave slope low pass and 12 dB/octave slope high pass with an electro-acoustic crossover frequency of 200 Hz. The loudspeaker system shall have an operating bandwidth of 48 Hz - 800 Hz with a sensitivity of 100 dB when measured at a distance of one meter. Nominal impedance shall be 8 ohms with a minimum impedance of 6. 5 ohms at 45 Hz. The applied RMS voltage is determined using the minimum impedance of the system. The amplifier used to drive the system has a minimum operating headroom of 6 dB referenced to the RMS voltage. 5 The maximum output level of the loudspeaker system is calculated based on the sensitivity and the power handling capabilities of the system. 7 The minimum impedance of the loudspeaker system is taken over its intended band of operation. 8 The distortion measurements of the loudspeaker system are performed at a distance of 1 m with RMS input voltages corresponding to 1% and 10% of rated system power handling calculated using minimum system impedance. The distortion percentages are log based averages from 40 Hz ­ 300 Hz. 9 Before attempting to suspend the loudspeaker system, consult a certified structural engineer. This loudspeaker system can fall from improper suspension, resulting in serious injury and property damage. [. . . ] 9 Before attempting to suspend the loudspeaker system, consult a certified structural engineer. This loudspeaker system can fall from improper suspension, resulting in serious injury and property damage. Use only the correct mating hardware, forged shoulder machinery eye bolt, Mil Spec MIL 51937-3. [. . . ]