System Examples - Kenwood KAC-726 Instruction Manual

System examples

Full-range 2 -channel syst em
Sw itch setting
OPERATION
FILTER
STEREO MONO(Lch)
OFF LPF
High-pow er f ull-range 2 -channel syst em
Sw itch setting
OPERATION
FILTER
STEREO MONO(Lch)
OFF LPF
Full-range 2 -channel + Subw oof er syst em
Sw itch setting
OPERATION
FILTER
MONO(Lch)
OFF LPF STEREO
Tri-m ode
Sw itch setting
OPERATION
FILTER
MONO(Lch)
OFF LPF STEREO
Principle of Tri-m ode
M ethod of frequency band division using a coil and capacitor•••in case of 6dB/ oct. slope
Crossover Frequency
0 dB
-3 dB
L
Exam ple:
When it is required to set a crossover frequency of 120 Hz using speakers w ith 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).
2CA U TION
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.
8
CENTER UNIT
L
CENTER UNIT
R
CENTER UNIT
L
CENTER UNIT
R
Coil (L): Passes low frequencies and blocks high
Capacitor (C): Passes high frequencies and blocks low
159000
C
C=
fc x R
159 x R
Frequency
L=
fc
Left speaker
L L
Right speaker
R R
Left speaker (Bridged)
L L
R R
L L
Right speaker (Bridged)
R R
Left speaker
Right speaker
L L Subwoofer
(L + R)
R R
(Bridged)
C
High
L
pass
R
C
frequencies. (Low pass)
frequencies. (High pass)
(µF)
fc=Cut of Frequency (Hz)
R=Speaker Impedance (Ω)
(mH)
L
Subwoofer
(L + R)
(Bridged)