Altec Lansing 1218A User's Manual
Contents
1. 1218A Musical Instrument Speaker System Designed to meet the high performance standards of professional musicians the ALTEC 1218A Musical Instrument Speaker System is rated to handle up to 50 watts of continuous power and produces an extremely wide angle of coverage to afford maximum listening enjoyment All components of the 1218A speaker system are carefully matched 421A type 422 8Z Low Frequency Musical Instrument Loudspeaker 15 woofer for high efficiency in reproducing bass and mid bass sounds 3 edge wound voice coil rigid cast aluminum frame powerful magnet 811B High Frequency Sectoral Horn massive cast aluminum 25 wide Operates from 800 Hz to beyond audibility 807 8Z High Frequency Driver has an extremely rugged voice coil and diaphragm assembly that handles much more power than conventional drivers Uniform response from 500 to 20 000 Hz N809 8A Dividing Network precision two section crossover network with HF attenua tion control 800 Hz crossover and 12 dB octave slope Two phone jack paralleled inputs A sturdy wooden bass reflex enclosure provides excellent bass and mid bass reproduction The 1218A has a resilient epoxy spatter finish It is portable and is fitted with a tubular swivel mount recessed die cast handles and removable latching front cover Standard phone jacks for cable connections and a 50 foot cable accessory make handling and setup easy Detailed specifications2. and descriptions of 1218A system components can be obtained from their respective ALTEC catalog sheets and brochures 1515 S Manchester Ave Anaheim Calif 92803 A DIVISION OF ALTEC CORPORATION __ _ ALTEC 1218A Type Power Rating Input Impedance Pressure Sensitivity Frequency Response Crossover Frequency input Connection Components Enclosure Dimensions Weight Accessory SPECIFICATIONS Portable two way musical instrument speaker system with wide angle coverage 50 watts with high frequency attenuator in the O position 100 watts power handling capacity may be obtained by setting the HF attenuator to the 6 position 8 ohms 102 dB SPL measured at 4 on axis with 1 watt input of pink noise from 500 Hz to 3000 Hz Equal to E I A rating of 55 dB with 1 mW input Ref 0 0002 dyne cm2 119 dB SPL measured at 4 on axis with 50 watts input full power rating of pink noise from 500 Hz to 3000 Hz Ref 0 0002 dyne cm2 35 Hz to 20 kHz see Figure 1 800 Hz full range dual LC network 12 dB octave slope Two standard phone jacks 1 ALTEC 422 82 Low Frequency Musical Instrument Loud speaker 421A type 1 ALTEC 811B High Frequency Sectoral Horn 1 ALTEC 807 8Z High Frequency Driver 1 ALTEC N809 8A Dividing Network see Figure 2 Bass reflex type inch plywood construction with resilient epoxy spatter finish Fitted with tubular swivel mount reces
3. die cast handles and removable latching front cover and shall weigh 110 pounds The speaker system shall be the ALTEC Model 1218A Musical Instrument Speaker System LITHO IN U S A CP 173 5K AL 1804 Specifications and components subject to change without notice Overall performance will be maintained or improved
4. sed die cast handles and removable latching front cover see Figure 3 30 H x 28 W x 19 D 76 84 cm H x 71 12 cm W x 50 17 cm D 110 pounds 49 81 kg 50 2 conductor cable with standard phone plug on each end Di KT HS Wane i O o gP NI ISNOdSFY FREQUENCY IN HERTZ Figure 1 1218A Frequency Response ox QO z sad Z 0 Z ALTEC oos Figure 2 N809 8A Dividing Network Figure 3 1218A with Cover Installed ALTEC 1218A ARCHITECT S AND ENGINEER S SPECIFICATIONS The speaker system shall be the two way musical instrument type with a sturdy plywood bass reflex enclosure an 800 Hz dividing network a 15 inch musical instrument type LF loudspeaker an HF driver and a cast aluminum 25 inch sectoral horn having exponential expansion A 50 foot 2 conductor cable with standard phone plug at each end shall be included with the system The speaker system shall be portable and shall meet the following performance criteria Power rating 50 watts Input impedance 8 ohms Frequency response 35 Hz to 20 kHz Pressure sensitivity 102 dB SPL at 4 feet from 1 watt 119 dB SPL at 4 feet from 50 watts equal to EIA rating of 55 dB SPL at 30 feet from 1 milliwatt Crossover frequency 800 Hz Crossover slope 12 dB octave Dimensions 30 H x 28 W x 19 D The speaker system shall have a resilient epoxy spatter finish a tubular steel swivel mount recessed
Download Pdf Manuals
Related Search