Altec Lansing Duplex 9864A - Manual

A
L A N S I N G
9864A
16" Duplex®
Loudspeaker System
PRIMARY SPECIFICATIONS
KEY FEATURES
★ High-Output Capability
★ Excellent Directivity Control
★ 550 Watts = 130 dB SPL
★ Enclosure Allows Refinishing
★ True Point Source
DESCRIPTION
System Type: Vented bass horn type, two-way
full-range loudspeaker system.
Pressure sensitivity: (see note 1)
H.F.: 109 dB SPL
(1W, 1 kHz to 10 kHz. re: 20 |xPa.
L.F.: 104 dB SPL
(1W, 125 Hz to 1 kHz, re: 20 |xPa).
Frequency Response: 50 Hz to 15 kHz
(see Figure 2, note 2).
Power Handling: (see note 3)
H.F.d kHz to 10 kHz): 75 w, AES method.
150 w, continuous program.
300 w, peak power.
LF.(50 Hz to 4 kHz): 200 w, AES method.
400 w, continuous program.
800 w, peak power.
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.
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 utilizes 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 grille.
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.