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12
RA‑1572MKII Stereo Integrated Amplier
performance, you 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 amplier 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 amplier connection.
Speaker Connections
i
Turn off all the components in the system before connecting the speakers.
The RA-1572MKII 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 RA-1572MKII 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. Place
the connector lug or wire around the binding post shaft. Turn the binding
post clockwise to clamp the connector lug or wire rmly in place.
NOTE: Be sure there are no loose wire strands that could touch adjacent
wires or connectors.
Remote Sensor
2
This remote sensor window receives IR commands from the remote control.
Please do not block this sensor.
Display
3
The front panel display shows the source selected, volume level and tone
settings. The display provides access to the setup and conguration menu
options of the amplier.
Front USB Input
6
The front USB input can be connected to an iPhone, iPad or iPod device
providing music playback to the amplier. To enable audio playback using
one of these devices simply plug the device into the front USB and select
USB as the desired source. The iPhone, iPad and iPod device will remain
active allowing search and play functions.
APTX Bluetooth Connection
y
The Bluetooth Antenna y on the RA-1572MKII’s back panel is for wireless
streaming via Bluetooth from your device (i.e. mobile phones, tablets or
computers). From your device, look for “Rotel Bluetooth” and connect to it.
Connection is normally automatic, but if prompted for a password, please
press “0000” on your device. The RA-1572MKII’s supports both traditional
Bluetooth, AAC and APTX Bluetooth audio streaming.
Rear USB Power Port
]
The rear USB port provides 5V/0.5 amps for charging or powering
USB devices including streaming music players. This port does not allow
playback of audio.
The port can be congured to remain powered even when the RA-1572MKII
is in standby mode through the front panel setup menu (See USB POWER
on page 14).
This conguration option allows the attached streaming source to remain
powered for use with the Signal Sense function for automatic power on/
off control of the amplier.
NOTE: When congured to provide continuous power to the rear
panel USB port the RA‑1572MKII will consume additional power even
when in standby mode.
Audio Controls
VOLUME Control
4
G
Turn the knob clockwise to increase the volume, or counter clockwise to
decrease the volume. From the remote control press the volume + or - button
to turn the volume up or down. Press the MUTE H button to completely
mute the volume.
BALANCE Control
9
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
9
button to toggle the front display to
BALANCE SETTING mode. Then press the - or + button on the front panel to
change the value to LEFT or RIGHT. The value can change from L15 to R15.
NOTE: This setting is saved permanently including after powering off
the RA‑1572MKII.
To make temporary changes not saved after power off, from the remote,
press the BAL C button to access the BALANCE SETTING menu, then press
the up/down/left/right E arrow buttons to adjust. When nished, press
the BAL C button again to exit the menu.
Tone Control Bypass 9C
Bass and Treble Control (Tone Control) circuits are bypassed at factory
default to ensure the purest possible sound. To turn on the tone control from
the front panel, press the MENU
9
button to toggle to the Tone Bypass
control then press the - or + button on the front panel to turn bypass on or off.
When tone bypass is set to on, the front display will show TONE BYPASS.
NOTE: This setting is saved permanently including after powering off
the RA‑1572MKII.
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