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clarion
APA2103
· · - : . ·~-
EVERYONE WANTS #MORE BASS"
In the
car audjo
environment,
subsonic
bass
information
(often called
"thump") requires three
sizable components:
1. Speaker Piston Area
(the size
of the moving
surface)
2.
Cone Excursion (the amount
of surface travel)
3. Power
(the ability
to move the
surface)
In
a
home, bass is easily propagated
(i.e., reproduce
one complete
cycle
of
an audio signal),
whereas in a
small vehicle, "air
pressure"
must be
modulated to
simulate
propagation
of the bass wave. Speaker piston area
and cone excursion
become the
critical factors in producing low-
frequency response.
As a general rule of
thumb,
remember that the smaller
the
speaker,
the
greater the mechamcal cone travel required to produce
low
bass. The
larger the
speaker,
the shorter the mechanical cone travel required to
produce the
same
bass response.
A single
subwoofer
can only produce as much
"pressure"
as the piston area
and the amount of mechamcal cone excursion allow. Throwing more
power on a
single
subwoofer may not be the best answer to more bass
response. Adding
multiple
subwoofers to an audio system is often more
economical
than adding sheer brute amplifier power.
The best answer may be a combination of factors, including larger
speakers,
multiple drivers, and bigger
amplifiers.
This may require
modification of the car's electrical
system,
or
special
installation
skills
necessary to design and install multiple
subwoofer
speaker
systems.
Just
how much bass is enough?
Everyone wants
"more
BASS"
in the car audio environment. If this is
your goal, we suggest visiting your
local
authorized Clarion dealer for
professional
system designs
and installation options.
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6
•Everyone
Wants
"More
Bass
"
-~fft;'~:
·
OPERATION/INSTALLATION
MANUAL
SPECIFICATIONS
APA2103 2-Channel Power Amplifier
Maximum P wcr
Output:
230
watt (
11
5
watts
x
2)
Conti
nu
us
Average
Power Output:
50 watts
x 2
into
4 ohms;
Frequency Response(± 1 dB):
Signal-to-Noise Ratio (A-wtd):
Input
Sensitivity (at rated output):
Cun-ent
Use (at
rated output):
Speaker Load Capacity:
Dimensions
(W x
H
x
L):
20 Hz to
20
kHz,
0.04%
THD
75 watts
x 2
into
2 ohms
(typical);
20 Hz to 20 kHz,
0.4%
THD
125 watts
x
1 into 4
ohms;
20 Hz to 20 kHz,
0.4%
THD
10 Hz to 50 kHz
100
dB
or
better
Low-Level (RCA):
200
m V to
5
V
Speaker-Level: 400 m V to
I
0
V
14 amps
4ohms
9
l/
16
11
x
17/g"
x 9
l/
1
6
11
230
mm
x 47.5
mm
x
2.
Omm
APA2103 Speaker-Level Wire Codes
SPEAKER
INPUT
APA2103 Front
Specifications •
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