Marantz MM9360 INPUT XLR and ¼ PHONE jacks, Balanced Inputs, Unbalanced Inputs, RC-5IN/OUT jack

9. INPUT XLR and ¼" PHONE jacks

The amplifier uses 1/4" phone jacks and female XLR jacks for balanced input signals, recommended for longer input cables and to minimize hum and noise.

Balanced Inputs

It is recommended that balanced input connections be used whenever possible to take full advantage of the amplifier's common mode rejection properties, and to reduce ground- loop problems. The (+) signal is on pin 2 of the XLR, and the tip of the phone jack. The (-) signal is on pin 3 of the XLR, and the ring of the phone jack.

Unbalanced Inputs

If an unbalanced XLR input connection is used, pin 3 should be connected to input ground (pin 1). If the ¼" input jack is used unbalanced, the use of a mono (tip-sleeve) plug will automatically tie the (-) connection to input ground. Note: Never float the (+) or (-) input connection when us- ing an unbalanced source.

10. RC-5 IN/OUT jack

If your system uses a Marantz remote control com- patible component with preamplifier outputs, such as an A/V preamplifier or surround receiver, these jacks allow you to turn the power of the amplifier to ON or OFF/Standby through remote control from the preamplifier or receiver. Before using these jacks, check the owner's manual of the Marantz component to see if it is remote control compat- ible.

11. AC INLET

Connect AC cord (Supplied) and plug into a grounded AC power outlet.

12. DC TRIGGER jacks

Two 3.5mm jacks are used for remote switching between ON status and OFF/Standby status. An external 12 volt DC power supply wired in series with a switch is required for the DC trigger input. Wire the switched DC to the tip of a 3.5mm miniature phone plug for the DC trigger input, and wire the power supply ground to the sleeve. Be sure to use a latching (push-push) type switch rather than a mo- mentary switch. Assuming the amplifier's main AC power switch is on, an input voltage transition from 0 to 12 volts turns on the amplifier (if already in OFF/Standby mode), and after a one second delay provides 12 volts to the DC Trigger Out jack for remote control of other amplifiers. A DC trigger input voltage transition from 12 volts to 0 volts returns the amplifier into Off/Standby mode.

			(Gnd)
Tip (+)	(+)
Ring (-)				RCA Plug
Sleeve (Gnd)
		Stereo Phone Plug
		used for balanced

Tip (+)

Sleeve (Gnd)

Mono Phone Plug used for unbalanced

XLR pins are numbered on the connector insert.

2	= (+)	XLR Male
3	= (-)
1	= (gnd)

    

13. AC FUSE drawer

This is where the AC line fuse is located. In the event of fuse failure, replace only with MDA 12 250V.

14. INPUT RCA jacks

Connect the preamplifier output to this jack. Since these connections use unbalanced signals, they are more succeptable to picking up radiated noise such as magnetic field from a large power transformer, electric motors, flourescent lights, computer and video cables, etc. For best noise performance, keep these cables short and avoid passing them near any potential noise source.

15. SPEAKER SYSTEM terminals

Dual binding posts provide connections for the speaker out- puts. In addition to using the banana-type plug, the bind- ing posts have a slotted entry-way for wire-crimped spade terminals. In BRIDGE MONO mode, the channel 1, 3, or 5 red binding post is the (+) in-phase speaker output termi- nal and the channel 2, 4, or 6 red binding post becomes the (-) out-of-phase speaker terminal.

CAUTION! NEVER CONNECT THE TWO RED BINDING POSTS TOGETHER OR CONNECT EITHER RED BIND- ING POST TO A BLACK BINDING

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