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System examples
Principle of Tri-mode
Method of frequency band division using a coil and capacitor•••in case of 6dB/oct. slope
L
C
0 dB
-3 dB
Coil (L):
Passes low frequencies and blocks high
frequencies. (Low pass)
Capacitor (C):
Passes high frequencies and blocks low
frequencies. (High pass)
Crossover Frequency
Frequency
159000
C= (µF)
fc x R
159 x R
L= (mH)
fc
fc=Cut of Frequency (Hz)
R=Speaker Impedance ()
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).
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.
2CAUTION
L
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
L
C
C
MONO(Lch)
STEREO
OPERATION
MONO(Lch)
STEREO
L+R
OPERATION
KAC-728/528
KAC-628
LPF
FILTER
OFF
LPF
FILTER
HPF
OFF
MONO(Lch)
STEREO
OPERATION
MONO(Lch)
STEREO
L+R
OPERATION
KAC-728/528
KAC-628
LPF
FILTER
OFF
LPF
FILTER
HPF
OFF
MONO(Lch)
STEREO
OPERATION
MONO(Lch)
STEREO
L+R
OPERATION
KAC-728/528
KAC-628
LPF
FILTER
OFF
LPF
FILTER
HPF
OFF
MONO(Lch)
STEREO
OPERATION
MONO(Lch)
STEREO
L+R
OPERATION
KAC-728/528
KAC-628
LPF
FILTER
OFF
LPF
FILTER
HPF
OFF
CENTER UNIT
CENTER UNIT
CENTER UNIT
CENTER UNIT
High
pass
Subwoofer
(L + R)
(Bridged)
Full-range 2-channel system
Full-range 2-channel + Subwoofer system
Tri-mode
High-power full-range 2-channel system
Switch setting
Switch setting
Switch setting
Switch setting
Right speaker
Left speaker
Right speaker (Bridged)
Left speaker (Bridged)
Right speaker
Left speaker
Subwoofer
(L + R)
(Bridged)
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  • Hi my kac-628 has no output replaced fuse still nothing how do i check with meters if any output happening Submitted on 27-2-2022 at 04:47

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