Mackie HRS120 MASTER OUT/SLAVE IN, REMOTE INDICATOR, SUBWOOFER BYPASS FOOT SWITCH, POWER, SLAVE IN, POLARITY, POLARITY, SLAVE IN, MASTER OUT, MASTER OUT, MASTER OUT, Note:

Frequencies below the crossover frequency are sent to the subwoofer, and frequencies above the crossover frequency are sent to the LEFT and RIGHT OUTputs, which are connected to the main/satellite speakers.

Set the crossover frequency to the lowestfrequency response rating of the main/satellite speakers.

MASTER OUT/SLAVE IN

Balanced XLR and unbalanced RCA female connectors are provided for the MASTER OUT/ SLAVE INputs. Use these for daisy-chaining two HRS120s by connecting the MASTER OUT jack from the first subwoofer to the SLAVE IN jack on the second subwoofer (see note below).

The SLAVE IN bypasses all filtering, but is affected by the POLARITY and INPUT SENSITIVITY settings.

The MASTER OUT is post-filtering (variable and elliptical crossover, subsonic filter, and LFE gain) and pre- POLARITY and INPUT SENSITIVITY.

Note: You cannot daisy-chain more than one additional subwoofer using these connections. If SLAVE IN is used as an input, the MASTER OUT has no signal present. To connect more subwoofers, connect the MASTER OUT from the first subwoofer to the LEFT (MONO) INput of the second subwoofer with the FILTER BYPASS switch pushed in. Then connect the MASTER OUT of the second subwoofer to the LEFT (MONO) INput of the third subwoofer, and so on.

SUBWOOFER BYPASS FOOT SWITCH

This is a 1/4" jack for connecting a normally- open footswitch. When the switch is closed, the subwoofer is muted and the LEFT and RIGHT OUTputs pass the full-range signal to the main/satellite speakers.

This is useful for making a quick comparison between the HRS120 enhanced and non-enhanced low-frequency playback.

REMOTE INDICATOR

This is a 1/4" jack for connecting a remote indicator to indicate when the subwoofer is by- passed. An internal relay closes, shorting the tip and sleeve of the REMOTE INDICATOR jack whenever the subwoofer is in bypass mode, either triggered manually with the FOOT SWITCH or by the auto-off function.

This can be used to turn on a remote, low- voltage lamp. Note that this jack does not provide power. It accepts a maximum of 24 VDC

10

across the tip/sleeve when the internal relay is open, and a maximum 1 amp of current when the relay is closed.

	CAUTION: There is an in-
	ternal 1A fuse to protect the
	REMOTE INDICATOR circuit.
	Exceeding 1A of current may
	blow the internal 1A fuse.
		LEFT
	IN	(MONO)
SUB		OUT
	SAT
80Hz
55Hz	110Hz
CROSSOVER
	L	L
	IN	OUT
	R	R
SUB	SAT
80Hz
55Hz	110Hz
CROSSOVER		OUT
	IN
		RIGHT
	SLAVE/MASTER
SLAVE		MASTER
	IN	OUT
	S	M
POLARITY &
INPUT SENSITIVITY ACTIVE		PROCESSED SIGNAL
	SUBWOOFER BYPASS
	FOOT SWITCH	REMOTE INDICATOR
OPEN - SUB ON, L/R BASS MANAGED		*MAX OPEN CIRCUIT 24V
CLOSED - SUB DEFEAT, L/R FULL RANGE		*MAX CLOSED CIRCUIT 1A

ON

POWER

120 VAC, 60 Hz, 575 WATTS