Polarity And Phasing; Speaker Connection; Headphone Output 4; Remote Sensor 5 - Rotel RA-12 Owner's Manual

may want to consider special high-quality speaker cables. Your authorized
Rotel dealer can help in the selection of cables for your system.

Polarity and Phasing

The polarity - the positive/negative orientation of the connections - for every
speaker and amplifier connection must be consistent so all the speakers will
be in phase. If the polarity of one connection is reversed, bass output will
be very weak and stereo imaging degraded. All wire is marked so you can
identify the two conductors. There may be ribs or a stripe on the insulation
of one conductor. The wire may have clear insulation with different color
conductors (copper and silver). There may be polarity indications printed
on the insulation. Identify the positive and negative conductors and be
consistent with every speaker and amplifier connection.

Speaker Connection

Turn off all the components in the system before connecting the speakers.
The amplifier has color-coded binding post type speaker connectors on the
back panel. These connectors accept bare wire, connector lugs, or dual
banana type connectors. (except in European Community countries where
their use is not permitted.)
Route the wire from the amplifier to the speakers. Give yourself enough slack
so you can move the components to allow access to the speaker connectors.
If you are using dual banana plugs, connect them to the wires and then
plug into the backs of the binding posts. The thumbscrews of the binding
posts should be screwed in all the way (clockwise).
If you are using terminal lugs, connect them to the wires. If you are attaching
bare wires directly to the binding posts, separate the wire conductors and
strip the insulation from the end of each conductor. Be careful not to cut
into the wire strands. Unscrew (turn counterclockwise) the binding post
thumbscrews. Place the connector lug or wire around the binding post
shaft. Turn the thumbscrews clockwise to clamp the connector lug or wire
firmly in place.
NOTE: Be sure there are no loose wire strands that could touch adjacent
wires or connectors.

Headphone Output 4

The headphone output allows you to connect headphones for private listening.
This output accepts a standard 3.5mm (1/8") mini stereo headphone
connector. Plugging in a set of headphones does not cut off the signal to
the outputs. Use the Speaker Selector to turn off the speakers. The settings
of the Function Selector determines which source is heard.
NOTE: Because the sensitivity of speakers and headphones can
vary widely, always reduce the volume level before connecting or
disconnecting headphones.

Remote Sensor 5

This remote sensor window receives IR commands from the remote control.
Please do not block this sensor.

Display 7

The front panel display shows the source selected, volume level and tone
settings.

Front USB Input 0

The front USB input can be connected to an iPod, iPhone, USB flash memory
or the Bluetooth dongle (supplied) for wireless streaming. With iPod or
iPhones, simply plug the device into the front USB and select USB function
from the source selector. The iPod and iPhone remain active allowing search
and play functions.

Bluetooth Dongle

Insert the supplied Bluetooth Dongle into the front USB of the RA-12/RA-11
for wireless streaming via Bluetooth, from your device (i.e. mobile phones).
From your mobile device, look for "Rotel Bluetooth" and connect to it.
Connection is normally automatic, but if prompted for a password, please
press "0000" then enter on your device.
NOTE: Not all Bluetooth dongles will operate with RA-12/RA-11.
Please use the one supplied.

Audio Controls

Volume Control 9 B
Turn the controls clockwise to increase the volume, or counter clockwise to
decrease the volume. From the remote control press the volume + or - key
to turn the volume up or down. Press the MUTE
the volume.
Balance Control 8 C
The Balance Control adjusts the left-to-right balance of the sound output. The
factory default is the center position or "0". To change the balance from the
front panel, press the MENU
8
SETTING mode. Then press the LEFT or RIGHT keys on the front panel to
change the value to LEFT or RIGHT. The value can change from L15 to R15.
NOTE: These settings are saved permanently including after powering
off the RA-12/RA-11.
To make temporary changes not saved after power off, from the remote,
press the BAL key to access the BALANCE SETTING menu, then press
C
the left/right arrow key to adjust. When finished, press the EXIT
to exit the menu.
Tone Control Bypass 8 F
Bass and Treble Control (Tone Control) circuits are bypassed at factory
default to ensure the purest possible sound. The front display will show
TONE BYPASS. To turn on the tone control from the front panel, press the
MENU 8 key to toggle to the Bypass control then press the left/right arrow
keys to turn bypass on or off.
NOTE: This setting is saved permanently including after powering off
the RA-12/RA-11.
To temporarily changes the Tone Control Bypass, press the BYPASS
on the remote control to toggle the Bypass mode enabled and disabled.
key to completely mute
B
key to toggle the front display to BALANCE
11
key
G
key
F