Altec Lansing Duplex 9864A User's Manual
Contents
1. ALT EC 9864A 16 Duplex Loudspeaker System KEY FEATURES High Output Capability Excellent Directivity Control 550 Watts 130 dB SPL Enclosure Allows Refinishing True Point Source PRIMARY SPECIFICATIONS System Type Vented bass horn type two way full range loudspeaker system Pressure sensitivity see note 1 H F 109 dB SPL 1 W 1 kHz to 10 kHz re 20 Pa L F 104085 1 W 125 Hz to 1 kHz re 20 Pa 90 Hz to 15 kHz see Figure 2 note 2 Frequency Response see note 3 75 w AES method 150 w continuous program 300 w peak power 200 w AES method 400 w continuous program 800 w peak power Power Handling H F 1 kHz to 10 kHz L F 50 Hz to 4 kHz Maximum Output see note 4 H F 128 dB SPL AES method 131 dB SPL continuous program 134 dB SPL peak power L F 127 dB SPL AES method 130 dB SPL continuous program 133 dB SPL peak power DESCRIPTION The Altec Lansing 9864A is a two way factory assembled vented bass Duplex horn system This compact system features high sensitivity high out put capability point source alignment with excellent directivity control down to 200 Hz The coverage at 500 Hz is 70 horizontal by 50 vertical and the sys tems nominal coverage is 60 horizontal by 40 vertical The bass reflex porting extends the low frequency response to 50 Hz or lower if multiple units are used This unique driver util2. 7 Harmonic Distortion at 0 1 Rated Power HORIZONTAL VERTICAL Figure 1 1 3 Octave Polar Response 9864A Center of Gravity A 14 3 inches 36 2 cm B 15 8 inches 40 0 cm ARCHITECT S AND ENGINEER S SPECIFICATIONS The loudspeaker system shall be of the vented bass horn type consisting of one 16 inch 40 6 cm high power Duplex loudspeaker with a coaxially em bedded 1 4 inch compression driver loaded with a 60 by 40 constant directivity horn The loudspeaker sys tem shall meet the following performance criteria Power handing 275 watts 200 LF 75 HF of pink noise with 6 dB crest factor band limited from 50 Hz to 15 kHz Frequency response smooth and uniformly usable from 50 Hz to 15 kHz Pressure sensitivity 109 dB SPL from 1 kHz to 10 kHz and 104 dB SPL from 125 Hz to 1 kHz one watt at one meter on axis The enclosure shall be constructed of 3 4 inch 7 ply birch plywood and shall be heavily braced and lined with sound absorbent glass wool The finish of the enclosure shall be an architectural wood grain vi nyl that is paintable or stainable with a black metal grille The dimensions of the enclosure shall be 31 5 inches 80 0 cm high by 25 3 inches 64 3cm wide by 25 5 inches 64 8 cm deep The loudspeaker system shall weigh 124 0 lbs 56 2 ka The loudspeaker system shall be the Altec Lansing 9864A ALI EC YANE a MARK IV company P O BOX 26105 e OKLAHOMA CITY OK
3. 73126 0105 U S A Phone 405 324 5311 or FAX 405 324 8981 1994 ALTEC LANSING CORPORATION PRINTED IN U S A 4 94 Revision 2 42 02 038858 42 07 038858
4. izes the low frequency magnet structure to support both low and high frequency voice coil assemblies This physical driver alignment creates a true point source device The 9864A Duplex driver combines the Altec Lansing 515 8GHP 16 inch 40 6 cm low frequency driver and 299 1 4 inch 3 6 cm high frequency compression driver with a 60 by 40 constant direc tivity horn for smooth directivity through the cross over region The system should be used with an electronic crossover and the recommended cross over frequency is 1 kHz The 9607A plug in equalization module can be used to provide equaliza tion in Altec Lansing electronic crossovers The enclosure will also accept the standard Altec Lansing passive crossover network The enclosure is con structed from 3 4 inch 1 9 cm thick thoroughly braced 7 ply birch plywood lined with sound absor bent glass wool Threaded insert mounting points are provided to conveniently attach the Altec Lansing 816VI SK suspension kit The system may be hung as a single unit or as part of a cluster The en closure is covered in a new and unique wood grained vinyl which can be painted or stained to complement any interior The enclosure is supplied with a removable black metal arille The 9864A can be used individually or in arrays to create compact high output and directivity con trolled systems for use in churches auditoriums hotels and civic centers in 80 0 cm Replacement Gri
5. lle Model RG9864 Enclosure Vented bass horn type built of inch 1 9 cm birch plywood with e in 64 3 cm 25 5 in 64 8 cm 25 3 9864A Specifications continued Crossover Frequency 1 kHz recommended appropriate bracing lined with glass wool Includes mounting points for Impedance accessory 816VI SK suspension kit H F 8 0 ohms minimum L F 7 0 ohms minimum Finish Architectural wood grain vinyl with ohms nominal black metal grille 8 0 Components 16 inch high efficiency duplex Dimensions 31 5 inch 80 0 cm high loudspeaker 25 3 inch 64 3 cm wide inch 64 8 cm deep 25 5 Input Terminals Large screw terminals Net Weight 124 0 Ibs 56 2 kg Replacement L F R9864A LF Shipping Weight 132 0 Ibs 59 9 kg Replacement H F 25884 Accessories Altec Lansing 816VI SK suspension kit Altec Lansing continually strives to improve prod ucts and performance Therefore specifications are subject to change without notice NOTES ON MEASUREMENT CONDITIONS Pink noise signal one Watt calculated using E Zmin 3 16 meter measurement distance referred to one meter On axis one Watt calculated using E Zmin 3 16 meter measurement distance referred to one meter low frequen cies corrected for anechoic chamber error This system rating patterned after the AES method for indi vidual driver where the test signal is pink noise
6. with a 6 dB crest factor over the bandwidth of the system with power calculated using the E Zmin for two hours 4 This measurement made under the same conditions as Pres sure Sensitivity but at rated power and takes into account any power compression effects due to non linearities in the system Distortion components invalid above 10 kHz The distortion at any given frequency may be found by graphically taking the difference between the fundamental and harmonic and adding the number of Decibels which the harmonic has been raised on the graph and apply the formula 06 distortion 2 100 X 10 difference in dB 20 CENS LLL SS ee d eee TE Nir Eee ee oe immi um Figure 3 Dispersion Angle HHH aA LLLI LE LIU LE LEM LL LL TE ANTS Figure 2 Frequency Response SAN NR Messe NS 4 A AA 4 b NS 8 XX 7 BO 112200 Te sua BEER Figure 4 Magnitude of Impedance MAL Mabe LVL MA b TES KR RAL SE oF t ai Se N S2 a AD L 1250 A S ke S SE Figure 5 Q and Directivity Index Figure 6 Harmonic Distortion at 0 01 Rated Power Figure
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