Computer I/O Connector W; Rotel Link T; Ext Rem In Jack U; Protection Circuit - Rotel ra-1570 Owner's Manual

NOTE: MAC computers do not require a driver to support PC‑USB
1.0 or 2.0 audio.
NOTE: Upon successful installation of the driver, you may need to select
the ROTEL audio driver from the audio/speaker setup of your computer.

Computer I/O Connector w

The RA‑1570 can be controlled via RS232 for integration with automation
systems. The COMPUTER I/O input accepts a standard straight DB-9 Male-
to-Female cable.
For additional information on the connections, software, and operating codes
for computer control of the RA‑1570, contact your authorized Rotel dealer.

ROTEL LINK t

This 3.5 mm stereo mini-jack (labeled ROTEL LINK IN) can optionally attach
to Rotel network enabled products with ROTEL LINK OUT connections. This
allows the attached Rotel products to communicate with each other and
be controlled via the Rotel Remote App (available for download on the
iTunes store).
®

EXT REM IN Jack u

This 3.5mm mini-jack receives command codes from industry-standard infrared
receivers via hard-wired connections. This feature could prove useful when
the unit is installed in a cabinet and the front-panel sensor is blocked. Consult
your authorized Rotel dealer for information on these external repeaters and
the proper wiring of a jack to fit the mini-jack receptacle.

Protection Circuit

The amplifier has both thermal and over-current protection circuitry that
protects the amplifier against damage in the event of extreme or faulty
operating conditions. The protection circuits are independent of the audio
signal and have no impact on sonic performance. Instead, the protection
circuits monitor the temperature of the output devices and shut down the
amplifier if temperatures exceed safe limits.
Most likely, you will never see this protection circuitry in action. However,
should a faulty condition arise, the amplifier will stop playing and will
display "AMP PROTECTION" on the front panel
If this happens, turn the amplifier off. Let it cool down for several minutes,
and attempt to identify and correct the problem that caused the protection
circuitry to engage. When you turn the amplifier back on, the protection
circuit will automatically reset.
In most cases, the protection circuitry activates because of a fault condition
such as shorted speaker wires, or inadequate ventilation leading to an
overheating condition. In very rare cases, highly reactive or extremely low
impedance speaker loads could cause the protection circuit to engage.
If the protection circuitry triggers repeatedly and you are unable to isolate
and correct the faulty condition, contact your authorized Rotel dealer for
assistance in troubleshooting.

Settings Menu

You can access the settings menu from the front panel by pressing the MENU
button or the MENU button on the remote. You can change the value
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of the selected option by pressing the +/- button on the front panel or left/
RIGHT arrow keys on the remote. Step through the sub-menus by pressing
E
the MENU key on the front panel or MENU
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• Tone Control: TONE BYPASS ON/OFF, BASS level and TREBLE levels can
be changed to desired settings. Press the ENTER button on the front panel
or ENT key on the remote to toggle between the tone setup options. (For
more information on Tone Control refer to the Tone Control Bypass, Bass
and Treble control sections.)
NOTE: These setting are stored permanently even after the RA‑1570
is powered off.
• BALANCE: Change left/right balance (For more information on Balance
sections).
NOTE: This setting is stored permanently even after the RA‑1570 is
powered off.
• DIMMER: Dims the display.
NOTE: This setting is stored permanently even after the RA‑1570 is
powered off.
• ROTEL LINK RCD: Selects how the CD player is connected to the amplifier,
either CD (analog), COAX1 or COAX2. CD is the factory default.
• POWER ON MAX VOLUME: This sets the maximum volume level when
the unit is turned ON. "45" is the factory default.
NOTE: Power On Max Volume settings do not apply to sources
configured with Fixed Gain.
• AUTO POWER OFF: The RA‑1570 can be configured to automatically
power off if unused for a specified period. If no changes are made to the
unit within the specified "Auto Power Off" timer the unit will automatically
go to STANDBY mode. The Auto Power Off timer will be restarted if changes
are made to the volume, source or playback. The default for Auto Power
Off is set to DISABLE.
Valid settings include: DISABLE, 1 HOUR, 2 HOURS, 5 HOURS, 12 HOURS.
• FIXED GAIN: Configures a Fixed Volume level for a specified input. To
enable this feature press the +/- buttons to select the desired fixed volume
level for Aux 1, Coax 1, Coax 2, Optical 1, Optical 2, PC‑USB or Bluetooth.
When enabled and the input with a Fixed Volume is selected, the Volume
level will immediately be set to the specified level.
Valid settings include: VARIABLE, FIXED 01‑95, FIXED MAX.
• AUX1 VOL: VARIABLE (disabled) is factory default.
• COAX1 VOL: VARIABLE (disabled) is factory default.
• COAX2 VOL: VARIABLE (disabled) is factory default.
• OPT1 VOL: VARIABLE (disabled) is factory default.
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button on the remote.
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