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Tri-mode
With the KAC-Q62, a subwoofer can be added easily to the speaker system
bv making use of the properties of coils and capacitors. This mode of
operation is called Tri-mode.
IM Principle of Tri-mode
e Method of frequency band division using a coil and
capacitor ... in case of 6 dB/oct. slope
D
L
Output
=
Crossover Frequency
ġ
N
it | EŻ
|
b
E
[a
equenc
|
Output | ne
Frequency
Frequency
e Coil {L} : Passes low frequencies and blocks high frequencies. (Low pass)
e Capacitor (C) : Passes high frequencies and blocks low frequencies. (High pass)
e Your coil and capacitor
Use the following formula to identify the coil and capacitor you need in your system.
Example :
When it is required to set a crossover frequency of 120 Hz using speakers with an
impedance of 4 ohms, Prepare commercially-available cojl 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).
E System example
To use the Tri-mode configuration, set the OPERATION switch to the STEREO
position,
R?
R
©
Full range
Subwoofer
speaker
(L+R)
Le
L {low cut)
D
KAC-Q62
àCAUTION
Compose the speaker system so that the overall speaker impedance seen from the
amplifier unit is no less than 2 ohms. If the impedance is less than 2 ohms, excessive
current may flow and the amplifier unit may be damaged.
English 5
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