System Examples - Kenwood KAC-848 Instruction Manual

System examples
w High-pass (100 Hz) + Subwoofer (100 Hz) system
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aos stesennensenssnceneratnars | CENTER UNIT
wien fig O- & Switch setting
Switch setting
Switch setting
{High pass) " Subwoofer
(L + R) (Bridged)
@Principle of Tri-mode
Method of frequency band division using a coil and capacitor---in case of 6dB/oct. slope
Coil (L): Passes low peciibacios and blocks high
frequencies. (Low pass}
_ Capacitor (C): Passes high frequencies and blocks low
frequencies. (High pass)
Crossover Frequency
159000
= {uF
C fexR
fc=Cut of Frequency (Hz)
Frequency
i' 159 xR
H) R=Speaker Impedance (Q)
@Example:
When it is required to set a crossover frequency of 120 Hz using speakers with an
impedance of 4 ohms.
Prepare commercially-available coi! 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 _
(uF) 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) a are
sufficient.
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