Tone Control Bypass; Bass And Treble Tone Controls; Pc-Usb Input; Computer I/O Connector - Rotel RA?1570 Owner's Manual

to R15. From the remote, press the BAL
SETTING menu, then press the LEFT or RIGHT
finished, press the EXIT key to exit the menu.
F
Tone Control Bypass K
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, press the BYPASS
the remote control. From the front panel press the MENU
to the Bypass control then press the + or – keys to turn bypass on or off.
Bass and Treble Controls 9C
Set the Bass or Treble controls from the front panel by pressing the
MENU key to toggle to either the Bass or Treble Setting menu. Then
9
press the - or + key to adjust the value. The Bass and Treble values range
from -10 to +10. From the remote control, press the Bass or Treble key
then press the LEFT or RIGHT
A properly setup high-performance audio system produces the most
natural sound with little or no adjustment of the tone controls. Use these
controls sparingly. Be particularly careful when turning the controls up
as this increases the power output in the bass or treble range, increasing
the load on the amplifier and speakers.
NOTE: Setting the Bass and Treble controls do not automatically turn
on the tone control. To turn on tone control, refer to previous section

Tone Control Bypass.

NOTE: Tone Bypass, Bass, Treble and Balance settings are temporary
and not saved after power off. To make permeant changes please
see Settings Menu.
Function Control 8 J
The Function control selects the input signal source. From the front panel or
remote press the corresponding input key to select the source to listen to.
PC‑USB Input q
Connect this input using the supplied USB cable to the USB socket of
your computer.
NOTE:
You will need to install the USB driver located on the CD supplied
with the RA-1570 onto your computer to allow it to send audio to the
RA-1570 via USB.
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.
key to access the BALANCE
C
E key to adjust. When
key to toggle
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keys on the remote to adjust the value.
E
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).
®
key on
K
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
C , 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
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the value of the selected option by pressing the +/- key on the front
panel or LEFT/RIGHT
by pressing the MENU
on the remote.
• Tone Control: TONE BYPASS ON/OFF, BASS level and TREBLE levels
can be changed to desired settings. Press the ENTER key on the front
panel or ENT on the remote to toggle between the tone setup options.
D button on the remote. You can change
E key on the remote. Step through the sub-menus
key on the front panel or MENU
9
11
button
D