System examples
■ 2-channel system
L
CENTER UNIT
R
100
150
100
70
150
70
50
200
50
200
(MIN)5
LPF
HPF
FREQUENCY(Hz)
FREQUENCY(Hz)
FILTER
AMP CONT
ISF
HPF
ON
ON
OFF
LPF
OFF
OFF
■ 2-channel + Subwoofer system
¡
L
CENTER UNIT
R
LINE OUT
L
R
™
100
150
1
100
2
70
150
70
0.3
4
50
200
50
200
(MIN)5
0.2(MAX)
LPF
HPF
INPUT
FREQUENCY(Hz)
FREQUENCY(Hz)
SENSITIVITY(V)
FILTER
AMP CONT
ISF
OPERATION
HPF
ON
ON
MONO(Lch)
OFF
¡
LPF
OFF
OFF
STEREO
■ Tri-mode
(High pass)
L
CENTER UNIT
R
100
150
100
70
70
50
200
50
200
LPF
HPF
FREQUENCY(Hz)
FREQUENCY(Hz)
FILTER
AMP CONT
HPF
ON
OFF
LPF
OFF
8
English
Left speaker
L
Right speaker
R
1
2
0.5
0.3
4
0.2(MAX)
INPUT
SENSITIVITY(V)
OPERATION
MONO(Lch)
STEREO
Left speaker (High pass)
L
Right speaker (High pass)
R
Subwoofer
L
(L + R)
(Bridged)
R
100
150
100
2
70
150
0.5
70
4
50
200
50
200
(MIN)5
LPF
HPF
FREQUENCY(Hz)
FREQUENCY(Hz)
SENSITIVITY(V)
FILTER
AMP CONT
ISF
OPERATION
HPF
ON
ON
OFF
™
LPF
OFF
OFF
Subwoofer
(L + R) (Bridged)
C
L
L
R
C
1
2
150
0.5
0.3
4
(MIN)5
0.2(MAX)
INPUT
SENSITIVITY(V)
ISF
OPERATION
ON
MONO(Lch)
OFF
STEREO
■ High-power 2-channel subwoofer system
CENTER UNIT
¡ ™
1
0.5
0.3
0.2(MAX)
INPUT
MONO(Lch)
STEREO
Principle of Tri-mode
Method of frequency band division using a coil and capacitor...in case of 6dB/oct. slope.
Crossover Frequency
0 dB
-3 dB
L
159 x R
L=
(mH)
fc
Example:
When it is required to set a crossover frequency of 120 Hz using speakers with an
impedance of 4 ohms.
Prepare commercially-available coil and capacitor with the closest ratings to the
results calculated from the formula above. The capacitor rating should be as close as
possible to 331.25 (μF) and the coil rating should be as close as possible to 5.3 (mH).
2CAUTION
• If you wish to bridge-connect a speaker, the speaker impedance must be no less
than 4 ohms. Connecting a speaker with an impedance lower than 4 ohms may
damage the unit.
• Be sure to connect capacitors to speakers to which high frequencies will be passed.
Failure to do so will result in a drop of the combined impedance with the subwoofer.
• Ensure that the withstand voltage and current ratings of the capacitors (C) and coils
(L) are sufficient.
¡
L
L
L
R
R
L
L
R
R
R
™
100
150
1
100
2
70
150
0.5
70
0.3
4
50
200
50
200
(MIN)5
0.2(MAX)
LPF
HPF
INPUT
FREQUENCY(Hz)
FREQUENCY(Hz)
SENSITIVITY(V)
FILTER
AMP CONT
ISF
OPERATION
HPF
ON
ON
MONO(Lch)
OFF
LPF
OFF
OFF
STEREO
Coil (L):
Passes low frequencies and blocks high
frequencies. (Low pass)
Capacitor (C):
Passes high frequencies and blocks low
C
frequencies. (High pass)
Frequency
159000
fc=Cut of Frequency (Hz)
C=
(μF)
fc × R
R=Speaker Impedance (Ω)
Left subwoofer (Bridged)
Right subwoofer (Bridged)