7
Installation
USING PASSIVE CROSSOVERS
A passive crossover is a circuit that
uses capacitors and/or coils and is
placed on speaker leads between the
amplifier and speaker. The crossover
delegates a specific range of
frequencies to the speaker for
optimum driver performance. A
crossover network can perform one of
three functions: High-Pass
(capacitors), Low-Pass (inductors or
coils) and Bandpass (combination of
capacitor and coil).
The most commonly used passive
crossover networks are 6dB/octave
systems. These are easy to construct
and require one component per filter.
Placing this filter in series with the
circuit will reduce power to the
speaker by 6dB/octave above or
below the crossover point depending
on whether it is a high-pass or low-
pass filter. More complex systems
such as 12dB/octave or 18dB/octave
can cause impedance problems if not
professionally designed.
Passive crossovers are directly
dependent upon the speaker's
impedance and component value for
accuracy. When passive crossover
components are used in multiple
speaker systems, the crossover's
effect on the overall impedance should
be taken into consideration along with
the speaker's impedance when
determining amplifier loads.
CAUTION: The Lightning Audio amplifiers are not recommended for impedance
loads below 2
stereo and 4
bridged (mono) loads.
80
4.1mH 1000µF
8.2mH
500µF
16mH
250µF
100
3.1mH
800µF
6.2mH
400µF
12mH
200µF
130
2.4mH
600µF
4.7mH
300µF
10mH
150µF
200
1.6mH
400µF
3.3mH
200µF
6.8mH
100µF
260
1.2mH
300µF
2.4mH
150µF
4.7mH
75µF
400
.8mH
200µF
1.6mH
100µF
3.3mH
50µF
600
.5mH
136µF
1.0mH
68µF
2.0mH
33µF
800
.41mH
100µF
.82mH
50µF
1.6mH
26µF
1000
.31mH
78µF
.62mH
39µF
1.2mH
20µF
1200
.25mH
66µF
.51mH
33µF
1.0mH
16µF
1800
.16mH
44µF
.33mH
22µF
.68mH
10µF
4000
.08mH
20µF
.16mH
10µF
.33mH
5µF
6000
51mH
14µF
.10mH
6.8µF
.20mH
3.3µF
9000
34mH
9.5µF
68mH
4.7µF
.15mH
2.2µF
12000
25mH
6.6µF
51mH
3.3µF 100mH
1.6µF
Freq.
Hertz
Speaker Impedance
2 OHMS
8 OHMS
4 OHMS
L
L
L
C
C
C
6dB/Octave Low-Pass
6dB/Octave High-Pass
L
C
L = Low-Pass (Inductor)
C = High-Pass (Capacitor)
For more information, see your Authorized Lightning
Audio Dealer.
Mounting
Clip
REMOTE LEVEL CONTROL (LA1.300.2 only)
(only usable in LP Low Pass mode)
Mounting and installation
1. Find a location, either under the dash or
near the center console, that gives easy
access to the remote.
2. Using the screws supplied, install the mounting
clip with the tabs towards the back.
3. Route the cable for the remote and connect to
both the remote and amplifier.
4. Slip the remote onto the mounting clip until it
snaps into place.
Содержание LA1.150.2
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