Kenwood KAC-X520 Instruction Manual - Page 11

Tri-mode, Example, Coil L, Capacitor C

Get Kenwood KAC-X520 PDF manuals and user guides View all Kenwood KAC-X520 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 11 highlights

■ Tri-mode CENTER UNIT L L RR L C (High pass) C Subwoofer (L + R) (Bridged) INFRASONIC B.M.S. 1 2 OFF ON OFF REMOTE +12dB FILTER 3 OFF HPF LPF OPERATION 4 STEREO MONO(L ch) ●Principle of Tri-mode Method of frequency band division using a coil and capacitor...in case of 6dB/oct. slope 0 dB -3 dB Crossover Frequency L C Frequency Coil (L): Passes low frequencies and blocks high frequencies. (Low pass) Capacitor (C): Passes high frequencies and blocks low frequencies. (High pass) C= 159000 fc x R (µF) L= 159 x R fc (mH) fc=Cut of Frequency (Hz) R=Speaker Impedance (Ω) ●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. English 11

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
English
11
1
2
3
4
ON
OFF
INFRASONIC
FILTER
LPF
OFF
HPF
B.M.S.
+12dB
OFF
REMOTE
OPERATION
MONO(L ch)
STEREO
L
R
L
R
L
C
C
■
Tri-mode
CENTER UNIT
(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
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 (
Ω
)
●
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.
2
CAUTION