Kenwood KAC-PS501F ■High-power 2-channelsystem, ■Tri-mode, ●Example:

System examples

■High-power 2-channel system

		HPF	LPF			FILTER			L
	STEREO MONO					FREQUENCY				L
		OFF			A						A
	OPERATION	FILTER
	FREQ (Hz)		2				CENTRE UNIT			R
	INPUT SENSITIVITY(V)
CONTROL	A	3	1
		4		50	200	50	200
	OFF 25Hz				LO PASS	HI PASS			R
	15Hz	5	0.5							L
	INFRASONIC		0.2
		(MIN)(MAX)					Switch setting			R B
AB A
INPUT SELECT STEREO MONO		HPF	LPF					B.M.S.	80	L LINE
		OFF			B		FREQ(Hz)
	OPERATION	FILTER					(REMOTE)
	INPUT SENSITIVITY(V)						OPEN/ B.M.S.			R	OUT
	FREQ (Hz)		2				CLOSE	50	100
		3
			1
CONTROL	B			50	200	50	200
		4						B.M.S.
	OFF 25Hz				LO PASS	HI PASS
	15Hz	5	0.5					(+6)
	INFRASONIC		0.2					B.M.S.
		(MIN)(MAX)

BRIDGED BRIDGED

Left speaker

Right speaker

■Tri-mode

				FILTER						C	L
	HPF	LPF						L		L
STEREO MONO				FREQUENCY					A
	OFF			A
OPERATION	FILTER				CENTRE UNIT			R
INPUT SENSITIVITY(V)										R
FREQ (Hz)	3	2
CONTROL A	4	1 50	200	50	200
OFF 25Hz		LO PASS		HI PASS				L
15Hz	5	0.5
INFRASONIC		0.2			Switch setting			R B		C	L
	(MIN)(MAX)
AB A										L
INPUT SELECT STEREO MONO	HPF	LPF				B.M.S.	80	L LINE
	OFF		B		FREQ(Hz)					R
OPERATION	FILTER				(REMOTE)			R OUT
INPUT SENSITIVITY(V)					OPEN/ B.M.S.
FREQ (Hz)		2			CLOSE	50	100
	3
		1
CONTROL B											Subwoofer
	5	50	200	50	200			(High pass)
15Hz		0.2
OFF 25Hz	4	LO PASS		HI PASS		B.M.S.
		0.5				(+6)
INFRASONIC	(MIN)(MAX)					B.M.S.					(L + R) (Bridged)

●Principle of Tri-mode

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

0dB -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	(µF)
	fc x R		fc=Cut of Frequency (Hz)
L=	159 x R	(mH)	R=Speaker Impedance (Ω )
	fc

●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 13