Alpine 3552S User Manual

Features
e 4/3/2-Channel Operation:
The 3552 can be used in 3 ways as:
a. 4-channel fuli-range amplifier, producing 30W per
channel into 4 ohms, or 40W per channel into 2
ohms. The amplifier can be used in a 4-speaker full
range system or in a bi-amped, dual subwoofer and
dual satellite combination.
b, 3-channel amplifier, producing 30W (4 ohms) or 40W
{2 ohms) into channels 1 & 2, and 85W (4 ohms) into
the third channel. This combination is perfect for a
single subwoofer, dual satellite (right and left) system.
c. 2-channel full-range amplifier, producing 85W per
channel into 4 ohms, The amplifier can be used as
full range, jow-pass (sub-woofer amp), or high-pass
(satellite amp).
e Status Monitor:
This indicator illuminates in green when the 3552 is
on and operational. This light will turn orange if any
protection circuitry is activated. It can be used as a
troubleshcoting aide should an installation problem
develop.
@ Active Dividing Network:
A built-in, switchable electronic crossover network at
80 Hz, 18 dB per octave can be used to set up the
amplifier for low-pass (subwoofer) or high-pass
(tweeter/midrange satellite) applications. This network
can also be switched off to allow full-range signal
amplification.
e Duo-B Feedback Circuitry:
Duo-Beta is a patented and technologically advanced
form of negative feedback. Negative feedback is used
to minimize distortion and stabilize the amplifier. Too
much feedback, however, increases the transient
intermedulation distortion (T.|.M.), decreases the
amplifier slew factor, and reduces its musicality. The
Duo-Beta circuitry supplies low negative feedback
throughout the audio frequency and very high
negative feed-back at DC. This stabilizes the
amplifier, removes DC offset, and offers excellent
total harmonic distortion (T.H.D.) characteristics. It
also provides tow T.I.M., with excellent slew factor,
stability, and musicality.
@ No Current Limiting:
Current limiting circuitries used in conventional
amplifiers may cause premature clipping and inferior
transient response. Absence of current limiters in the
audio section ensures low T.I.M., excellent transient
response, and superb sonic quality.
@S.TA.R. Circuitry:
Alpine proprietary Signal Transit for Accurate
Response circuit topology improves sonic properties
by reducing interaction between different sections of
the circuitry.
| 3552
¢ Input Mode Sefector:
This switch allows the user to specify the input signal
entering the amplifier:
a, Stereo Mode:
Allows the right and left channel signals to reach their
designated amplifier channels. This mode provides a
stereo output or a center channel common
information output {when used in the bridged
configuration}.
b. L (MONO) Mode:
Disables the right channel input connector and routes
the signal through the left channel input to all
sections of the amplifier. This mode can be used
when a single (mono) signal is amplified (either in
stereo or bridged operation).
c, L+R Mode:
Sums the right and left channel input signals and
toutes the result to all sections of the arnplifier. It can
be used in stereo or bridged operation to provide a
summed (mono) output.
e DC-to-DC Switching Mode Power Supply:
Provides excellent power output throughout the audio
bandwidth (20 Hz to 20 kHz). lis soft clipping
characteristics ensure superb transient response and
musicality.
e Fully Complementary, Discrete Output Circuitry:
For excellent reliability, superb sonic performance
and high current capability for accurate transient
response.
e Continuously Adjustable, Independent Front and
Rear Input Gain Controls:
Allow different-level settings for the two different
audio sections.
e Heavy Duty Construction:
Glass-epoxy printed circuit boards for excellent
thermal stability and long-term reliability.
e Gold-Plated RCA Input Connectors:
For most accurate signa! transmission and lowest
possible loss. Gold-plated terminals are immune to
signal deterioration caused by corrosion in the
connectors that can develop over time.
e Gold-Plated Speaker Output and Power
Connectors:
For high definition, minimum loss power transfer and
oxidization resistance.
e High Performance, Low Noise, Audiophile Quality
Active and Passive Components.
e Capacitive/inductive Power Supply Input and
Output Filtering:
For low radio frequency interference (RFI) and
immunity to system noises (such as alternator whine).
@ Fully Protected Against Wiring Errors.
a

Alpine 3552S Specifications

General

Brand	Alpine
Model	3552S
Category	Amplifier
Language	English