Alpine 3555 User Manual

SWITCH SETTINGS
Input Mode Selector Switches © and @
The switch modes shown are for CH1/2. Same explanations apply to mode selection for
CH3/4.
a) Set to the “ST” position (center) when the two channels are used in stereo.
—
(MONO) ST [J+
b) Set to the “Tt (MONO)" position when the two channels are used for one channel of
a stereo or bridged system.
[1](MONO) ST [1]+[2]
c)
Set
to
the
“[1]
+
[2]”
position
when
the
two
channels
are
used
for
a
subwoofer
system
which
uses
the
right
channel
and
left
channel
signals
summed.
(MONO) ST []+
Active
Dividing
Network
Mode
Selector
Switches
@
and
©
a)
Set
to
the
“LP”
position
when
the
amplifier
is
used
for
the
low-pass
(subwoofer)
system.
The
frequencies
higher
than
80
Hz
will
be
cut
(at
a
rate
of
18
dB
per
octave).
TS
OFF HP ie
15

Alpine 3555 Specifications

Power Output

4-channel power output (max)	120W x 4
4-channel power output (into 4 ohms with 0.04% THD)	50W x 4
3-channel power output (into 4 ohms with 10% THD)	100W x 2 and 200W x 1
2-channel power output (into 4 ohms with 10% THD)	200W x 2

Audio Specifications

frequency response	10 Hz to 50 kHz (+0, —1 dB)
signal-to-noise ratio	105 dB (referenced to rated power)
input sensitivity (for rated power output)	100mV to 2V (500 mV at center detent)
input impedance	10k ohms Min.
speaker impedance	4 or 2 ohms (stereo), 4 ohms (bridged)
active dividing network frequency and slope	80Hz, 18 dB per octave
acoustic compensation effect	+5 dB at 40 Hz, —1 dB at 150 Hz

Power

power requirement	11 — 16V DC Negative Ground

Weight and Dimensions

dimensions (W x H x D)	263mm x 55mm x 300mm
dimensions (W x H x D in inches)	10-3/8" x 2-3/16" x 11-4/5"
weight	4 kg (8 Ibs. 13 oz)