Altec Lansing AB8500 - Manual

A
L-ANSINC3
AB8500
AcoustaBASS™
Low-Frequency System
KEY SPECIFICATIONS
KEY FEATURES
★ High-Power Handling
★ High Efficiency
★ Extended Response
★ Compact Size
★ Enclosure Allows Refinishing
DESCRIPTION
System Type: Direct-radiating, vented, low-fre­
quency loudspeaker system.
Pressure Sensitivity:
(1 w, 100 Hz to 800 Hz,
re: 20 pPa, see note 1).
lOldBSPL.
Frequency Response:
(see Figure 1, Note 2)
46 Hz to 3,500 Hz.
Power Handling:
(50 Hz to 500 Hz,
see note 3)
800 watts, AES method.
800 watts, EIARS426A.
Maximum Long-Term
Output:
(800 watts input, 1 m,
re: 20 pPa, see note 4).
127.5 dB.
Impedance: 3.8 ohms minimum @ 40 Hz.
4.0 ohms nominal.
Components: Two 15 inch (38.1 cm)
low-frequency loudspeaker.
The Altec Lansing AB8500 is a member of
the AcoustaBASS''' family of low-frequency enclo­
sures. The
AB8500 is a direct-radiating vented de­
sign and provides high-efficiency, low distortion and
excellent low-frequency performance in a relatively
small enclosure. The
AB8500 employs dual long-
throw 15 inch (38.1 cm) loudspeakers in a 7.4 fL
(209.5 L) enclosure. The Enviro-board'' enclosure
is finished in beige with matching fabric grille. Con­
nections are made via barrier strip (^‘lO) recessed
into the back of the enclosure on a durable molded
connector panel.
The enclosure is constructed from Enviro-
Board''', a composite structural material which is
easily refinished (see Finishing Enviro-Board').
Enviro-board' ' is made of layered and selectively ori­
ented hardwood strands strongly bonded together
within a phenolic-resin matrix. The surface is a
proprietary vinyl laminate especially formulated for
Altec Eansing which can be painted or stained to
match any decorative environment.
The AcoustaBASS series of low-frequency en­
closures are ideally suited for any installation where
high-quality sound is required and in permanent in­
stallations for houses of worship, auditoriums and
arenas. The
AB8500 combines well with both the
Mantaray® and Vari-Intensc“’ series of horns.
The enclosures may be stacked for greater output
capability or for a narrower vertical beamwidth.
Every time the number is doubled, approximately
6 dB in output is gained (3 dB for double power
handling and 3 dB for the resultant higher Q).