Denon ADV-M51 manual 8Using the active subwoofer DSW-3L D-M51DVSonly, Protector circuit, English

The red side is the “+” side, the black side the “–” side.

To “+” side on amplifier (copper colored core wire)

NOTE: Make sure the core wires do not touch each other.

To “–” side on amplifier (silver colored core wire)

ENGLISH

Either twist the core wires firmly or terminate the wires.

qTurn the speaker	wInsert the cord’s	eTurn clockwise to
terminal	core wires.	tighten the
counterclockwis		terminal.
e to loosen it.

Connecting banana plugs

When using banana plugs, turn clockwise to tighten the terminal before inserting.

Protector circuit

•This unit is equipped with a high-speed protection circuit. The purpose of this circuit is to protect the speakers under circumstances such as when the output of the power amplifier is inadvertently short-circuited and a large current flows, when the temperature surrounding the unit becomes unusually high, or when the unit is used at high output over a long period which results in an extreme temperature rise.

When the protection circuit is activated, the speaker output is cut off and the power supply indicator LED flashes. Should this occur, please follow these steps: be sure to switch off the power of this unit, check whether there are any faults with the wiring of the speaker cables or input cables, and wait for the unit to cool down if it is very hot. Improve the ventilation condition around the unit and switch the power back on.

If the protection circuit is activated again even though there are no problems with the wiring or the ventilation around the unit, switch off the power and contact a DENON service center.

Note on speaker impedance

•The protector circuit may be activated if the set is played for long periods of time at high volumes when speakers with an impedance lower than the specified impedance (for example speakers with an impedance of lower than 4 Ω /ohms) are connected. If the protector circuit is activated, the speaker output is cut off. Turn off the set’s power, wait for the set to cool down, improve the ventilation around the set, then turn the power back on.

Cautions on connecting

•With this unit’s speaker outputs, signals with the reverse phase of the “+” side output terminal’s signals are also output from the “–” side output terminal.

Do not connect to a device for switching between multiple speakers (a speaker selector or audio channel selector) or connect in ways other than described in this manual. Doing so will result in damage.

(8)Using the active subwoofer (DSW-3L) (D-M51DVS only)

1.Set the power switch to the “ON” position.

• When the unit’s AC power cord is plugged into a switched AC outlet on the amplifier, if the power switch is left at the “ON” position, the unit’s power turns on and off automatically when the amplifier’s power is turned on and off.

• If the AC power cord is not plugged into a switched AC outlet on the amplifier, set the unit’s power switch to the “ON” position after turning on the amplifier’s power. When turning the power off, set the unit’s power switch to the “OFF” position before turning off the amplifier’s power.

2.Adjust the volume using the volume adjustment control.

For details, see “PART NAMES AND FUNCTIONS”.

(9) Removing the speaker net (SC-A3L) (D-M51DVS only)

*The net on the front of the speaker systems (SC-A3L) can be removed.

•To remove, grasp both sides of the net and pull forward.

•To mount, line up the holes in the four corners of the speaker net with the projecting pieces in the four corners of the cabinet and press in.

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