Denon AVR-550SD Operations Instructions download pdf (Page 38)

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Auto standby selector switch (AUTO STANDBY)

ON : The auto standby function is activated

OFF : The auto standby function is deactivated

Status indicator

• The two-colored LED indicates the active

subwoofer’s operating status, as follows:

Power “ON”...............................Lights green

Auto power off (standby mode) .....Lights red

Power “OFF” .....................................LED off

Protective circuit activated..........Flashing red

Power switch (POWER)

• The power turns on when this switch is set to

the “ON” position.

• Several seconds are required for the set to

begin operating. This is because the set

includes a built-in muting circuit to prevent

noise when the power switch is turned on and

off.

• When set to the “OFF” position, the power

turns off.

Auto Standby Function

• The amplifier is automatically set to the standby

mode if no signal is input for 5 to 11 minutes,

thereby saving electricity.

The power turns on immediately when a signal

is input.

CAUTION:

• Do not plug the AC power cord into an AC power outlet until all connections have been completed.

• Check the left and right channels and be sure to interconnect them properly, L (left) to L, R (right) to R.

• Plug the AC power cord in securely. An insecure connection could cause noise.

• Note that clamping pin-plug cords and power cords together or running pin-plug cords near the power

transformer could result in humming or noise.

• Check the polarities of the speakers and amplifier and be sure to interconnect properly. Connect the red

terminal on the speaker to the “+” speaker terminal on the amplifier, the black terminal on the speaker to

the “–” speaker terminal on the amplifier.

CONNECTIONS

(1) Connecting the line input connector (LINE IN)

* Connect this to the pre-out connector for the active subwoofer on the AV amplifier (“SUBWOOFER PREOUT”,

“MONO OUT”, etc.) using the included connection cord (3-meter RCA pin cord).

CAUTION:

• If this connector is connected to the pre-out connector for the surround center channel of a stereo amplifier

or AV surround amplifier, only the center channel’s bass sound will be produced, so the overall bass sound

will be insufficient.

Active subwoofer (DSW-3L)

Included connection cord

(3-meter RCA pin cord)

Crossover adjustment control (CROSSOVER)

• This control only functions when the LF

DIRECT switch (

) is set to the “OFF”

position.

• This control sets the upper limit of the

frequencies reproduced by the active

subwoofer.

• Setting criteria

50Hz : For left/right speakers with

diameters of 20 cm or greater

100Hz : For left/right speakers with

diameters between 10 and 25 cm

200Hz : For left/right speakers with

diameters of 12 cm or less

• When using a Dolby Digital- or dts-compatible

AV amplifier, we recommend turning the LF

DIRECT switch (

) to the “ON” position and

not using this function.

“Dolby” is a trademark of the Dolby

Laboratories Licensing Corporation.

“dts” is a trademark of Digital Theater

Systems.

Volume adjustment control (LEVEL)

• This control only functions when the LF

DIRECT switch (

) is set to the “OFF”

position.

• Use this control to adjust the volume of the

active subwoofer.

• When turned clockwise ( ) from the center

position, the volume of the active subwoofer

increases, and when turned counterclockwise

( ), the volume decreases. Set to the

desired position.

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Denon AVR-550SD Operations Instructions Page 38

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