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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 (combina-
tion 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
Ω
stereo and 4
Ω
bridged (mono) loads.
6dB/Octave Low-Pass
6dB/Octave High-Pass
Freq.
Hertz
Speaker Impedance
80
4.1mH
1000mF
8.2mH
500mF
16mH
250mF
100
3.1mH
800mF
6.2mH
400mF
12mH
200mF
130
2.4mH
600mF
4.7mH
300mF
10mH
150mF
200
1.6mH
400mF
3.3mH
200mF
6.8mH
100mF
260
1.2mH
300mF
2.4mH
150mF
4.7mH
75mF
400
.8mH
200mF
1.6mH
100mF
3.3mH
50mF
600
.5mH
136mF
1.0mH
68mF
2.0mH
33mF
800
.41mH
100mF
.82mH
50mF
1.6mH
26mF
1000
.31mH
78mF
.62mH
39mF
1.2mH
20mF
1200
.25mH
66mF
.51mH
33mF
1.0mH
16mF
1800
.16mH
44mF
.33mH
22mF
.68mH
10mF
4000
.08mH
20mF
.16mH
10mF
.33mH
5mF
6000
51mH
14mF
.10mH
6.8mF
.20mH
3.3mF
9000
34mH
9.5mF
68mH
4.7mF
.15mH
2.2mF
12000
25mH
6.6mF
51mH
3.3mF
100mH
1.6mF
2 OHMS
8 OHMS
4 OHMS
L
C
L
C
L
C
L
C
L = Low-Pass (Inductor)
C = High-Pass (Capacitor)
For more information, see your Authorized Lightning Audio Dealer.
Содержание Storm S1.1000D
Страница 1: ...S1 600D S1 1000D...
Страница 23: ...22 notes...