System examples

■Full-range 2-channel system

 

 

 

 

KAC-728/528

 

 

 

 

FILTER

 

OPERATION

 

CENTER UNIT

OFF LPF STEREO MONO(Lch)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KAC-628

 

 

 

 

 

 

 

 

 

 

FILTER

 

OPERATION

 

 

 

 

OFF

 

 

 

L+R

Switch setting

HPF

 

LPF

STEREO

MONO(Lch)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LL

RR

Left speaker

Right speaker

■High-power full-range 2-channel system

 

 

 

 

KAC-728/528

 

 

L

 

 

 

Left speaker (Bridged)

 

 

 

 

 

 

 

L

L

 

 

FILTER

 

OPERATION

 

CENTER UNIT

 

 

 

 

 

OFF LPF STEREO MONO(Lch)

 

 

 

R

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KAC-628

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

L

L

Right speaker (Bridged)

 

 

 

 

 

 

 

 

 

 

 

FILTER

 

OPERATION

 

 

 

 

 

 

 

 

 

 

 

R

R

 

 

 

OFF

 

 

 

L+R

Switch setting

 

 

 

HPF

LPF STEREO

MONO(Lch)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

■Full-range 2-channel + Subwoofer system

KAC-728/528

CENTER UNIT

FILTER

OPERATION

OFF LPF STEREO MONO(Lch)

 

KAC-628

 

FILTER

OPERATION

 

OFF

L+R

Switch setting

HPF LPF STEREO MONO(Lch)

LL

RR

Left speaker Right speaker

Subwoofer

(L + R) (Bridged)

■Tri-mode

 

 

 

 

KAC-728/528

 

 

 

 

FILTER

 

OPERATION

 

CENTER UNIT

OFF LPF STEREO MONO(Lch)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KAC-628

 

 

 

 

 

 

 

 

 

 

FILTER

 

OPERATION

 

 

 

 

OFF

 

 

 

L+R

 

 

HPF

LPF STEREO

MONO(Lch)

Switch setting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

L

C

High

Subwoofer

L

(L + R)

R

R

pass

(Bridged)

 

C

 

●Principle of Tri-mode

Method of frequency band division using a coil and capacitor•••in case of 6dB/oct. slope

 

 

Crossover Frequency

Coil (L): Passes low frequencies and blocks high

 

 

0 dB

 

 

 

frequencies. (Low pass)

 

 

 

 

 

 

 

 

 

 

 

 

Capacitor (C): Passes high frequencies and blocks low

-3 dB

 

 

 

 

 

L

 

 

 

 

159000

 

frequencies. (High pass)

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

C=

 

 

 

(µF)

fc=Cut of Frequency (Hz)

 

 

 

 

 

 

 

fc x R

 

 

Frequency

L=

159 x R

 

(mH)

R=Speaker Impedance (Ω )

 

 

 

 

 

 

 

 

 

●Example:

fc

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.

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