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ALTEC
LANSING
·
INCREMENTAL
POWER SYSTEM
OPERATING
INSTRUCTIONS
Reference Documents for Incremental
Power System:
No
user-serviceabl
e
parts i11si
de. Hazardous
volta
ge
111ay
be
e11-
CAUTION:
countered
withi 11
the chassis.
/11
s
tal/ati
o
n and
Service
i11f or111ati o11
within
this
document
is
for use only
by
ALTEC sound con
tractors,
factory
a11
t/10riz
e
d
warrant
y stations
and q11alifi ed
service
perso11n
e
l.
II
est
e11
j
oint
ii
/'11tili
sate11r
de
11e
pas
repnrer
/11i
-111
e111
e /es pieces
IMPO
R
TANT:
internes de /'appareil,
des co11ra11t
s
ii
haute
tension po11
v
ant
pas-
ser
ii
/'interie11r
d11
chnssis.
Les
renseig11
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111 e11
t
s inc/us
da11
s ce
docw11
e
nt
sont
destines
1111 iq11
e
111 e11t
ii
/'usage des
instal/at
e
11r
s agrees des systemes
acoustiq11
e s ALTEC,-des
·
centres de
rhJnration
sous
gara11ti
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a11t
orises,
ai11
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i
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ALTEC
L.ANSING
IICW4h'WPOri~fflm.l2200
42-02-045:?91
42-02-045284
42-02-045285
42-02-045286
42-02-045287
42-02-045288
42-02-045362
42-02-045289
Modular Block Di?gram Kit
Model 2220/2221 Input Modules
Model 2250/2250SA Driver Modules
Model 2251/2251SA Driver Modules
Model 2252/2252SA Driver Modules
Model 2275 Power Amplifier
Module
Model 2276
Power.
Amplifier
Module
Main Frame
CAUTIO~"""'"'"cmo,,"""""°"""""''°"'""""-""'-"'"_'°_,,.,.,,,-
_
1!$Q111DIOO:- ..
™(ICIM•
-
INTRODUCTION
Tci THE INCREMENTAL
POWER SYSTEM
The AL TEC Incremental Power System con-
sists of a main frame with plug-in modules
.
The rackmount main frame accepts modular
input, crossover, driver
,
and up to eight
75-watt power amplifier cards.
The AL TEC Incremental Power System can
:
ALTEC
LANSING'
SOUND
P
R
O
D
UC
T
S
DIVISI
ON
• Control high, mid, and low frequency
loudspeakers
v.:ith
_
s~parate
power
amplifiers
.,
• Connect
far, middle,
and
near-throw
horns to separate power amplifiers while
providing s~parate level contro
.
l s.
• Power up to four separate balanced 70-
volt systems
from
a single main frame
.
•
Power extremely complex sound systems
by combining the 'abilities of two or more
.
Incre mental Power Systems.
.·
.
·
Power amplifier
·
modules may be combined
in increments of 75 watts to meet most con-
ceivable audio applications. Parallel modes
may drive high power,
low
impedance
loads.
Bridged modes may drive balanced 70-volt
lines
.
A
parallel-bridge mode may drive high
power balanced 70-volt lines or other
loads.
Sp
eci
fi ca
t
ion
s
and compon
ent
s s
ubject
to
chang
e
without
notice
.
Overall
~
performance
will be
maintained
or
imp roved.
1515 S. Manchester
Ave.,
Anaheim, Calif. 92803
42-02-045121-04
LITHO IN U.S.A. 1278-1M
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