Altec Lansing 1230C User's Manual
Contents
1. 1230C MULTI PURPOSE LOUDSPEAKER SYSTEM A ee oO LANSING DESCRIPTION The Altec 1230C Multi Purpose System is a rug gedly portable roadworthy unit designed for use as a stage monitor in musical sound rein forcement applications and as a main speaker in P A reinforcement applications Because of its compact size unique 8 sided con figuration and performance features the 1230C solves professional sized problems Mounted inside the enclosure is Altec s 12 inch 617 8A duplex loudspeaker well recognized for uni form frequency response and high efficiency with low and high frequency elements mounted coaxially to produce an extremely compact yet dynamic system The high frequency horn com pression driver assembly provides exceptionally broad distribution of the high end while the bass driver element is known for impressively high efficiency and durability The 1230C s eight sturdy reinforced sides allow for easy and creative positioning to optimize sound dispersion patterns The unit serves ideally as a compact on the road traveller and as a highly efficient reliable speaker in public address systems This flexible Altec speaker system is finished in mar resistant textured black with matching black textured knit grille and vinyl edge protectors Designed for maximum strength and acoustical properties the enclosure is constructed of 34 particle board contains acoustical damping ma terial2. netic Assembly Weight Copper wire 4 8 Ib Ceramic 12 000 gauss Magnet Material Flux Density Dimensions Weight ARCHITECT AND ENGINEER SPECIFICATIONS The loudspeaker system shall include a 617 8A Duplex Coaxial Loudspeaker with dividing net work dual full section 1500 Hz crossover 12 dB octave slope The system shall meet the following structural and performance criteria The enclosure shall be constructed of heavily braced 34 plywood with edge protectors shall be acoustically damped with sound absorbent material and shall allow for position at 90 and 45 angles referenced to a floor plane mounting surface HF 12 Copper clad aluminum wire 8 5 oz Ceramic 11 400 gauss 1214 31 1 cm Diameter 734 19 7 cm Depth 25 5 lb 11 6 kg Finish shall be of mar resistant textured black Power capacity up to 60 watts of continuous pink noise band limited from 50 Hz to 15 000 Hz Frequency response 80 Hz to 15 000 Hz Pressure sensitivity 98 dB SPL at 4 when meas ured on axis with 1 watt input of pink noise band limited from 250 Hz to 5 000 Hz Imped ance 8 ohms Distribution pattern 90 conical Maximum dimensions 19 5 H x 22 Wx 14 D Weight 70 pounds The loudspeaker system shall be the ALTEC Model 1230C ALTEC 1515 SOUTH MANCHESTER AVENUE ANAHEIM CALIFORNIA 92803 ALTEC CORPORATION 1281 2 5M AL 1202 2
3. s and is solidly braced to complement the theoretical design of the entire system SPECIFICATIONS Type Components Power Rating Frequency Response Impedance Pressure Sensitivity Multi purpose coaxially mounted loudspeaker system 617 8A Duplex Loudspeaker with Dividing Network Long Term Broad Band Maximum Power Up to 60 watts of band limited pink noise 50 to 15 000 Hz 80 Hz to 15 000 Hz 8 ohms 98 dB SPL measured at Distribution Pattern Crossover Network Input Connections Enclosure Finish Dimensions 90 conical Dual full section 1500 Hz crossover 12 dB octave slope Two standard 1 4 phone jacks parallel wired Heavily braced rigid enclosure of 3 4 particle board Mar resistant textured black with edge protectors and carrying handle LITHO IN U S A 4 on axis with 1 watt input of pink noise band limited from 250 Hz to 5 000 Hz 116 dB SPL measured at 4 on axis with 60 watts input of pink noise band limited from 250 Hz to 5 000 Hz 51 dB SPL measured at 30 on axis with 1 mW input Equivalent EIA Rating 19 5 49 5 cm Hx 22 55 9 cm W x 14 35 5 cm D Shipping Weight 60 5 Ib 27 5 kg Actual Weight 52 Ib 23 6 kg Accessories included 50 2 conductor cable with standard 1 4 phone plug on each end 617 8A Duplex Coaxial Loudspeaker System LF Voice Coil Diameter 3 Voice Coil Material Mag
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