Rotel RC-1572 User manual

Owner’s Manual
RC‑1572
Stereo Control Amplifier

2RC‑1572 Stereo Control Amplifier
Notice
The RS232 connection should be handled by authorized persons only.
WARNING: There are no user serviceable parts inside. Refer all servicing
to qualified service personnel.
WARNING: To reduce the risk of fire or electric shock, do not expose
the unit to moisture or water. Do not expose the unit to dripping or
splashing. Do not place objects filled with liquids, such as vases, on
the unit. Do not allow foreign objects to get into the enclosure. If the
unit is exposed to moisture, or a foreign object gets into the enclosure,
immediately disconnect the power cord from the wall. Take the unit to a
qualified service person for inspection and necessary repairs.
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat. Do
not defeat the safety purpose of the polarized or grounding-type plug.
A polarized plug has two blades with one wider than the other.
A grounding type plug has two blades and a third grounding prong.
The wide blade or the third prong are provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched particularly
at plugs, convenience receptacles, and the point where they exit from
the apparatus.
Only use attachments/accessories specified by the manufacturer.
Use only with the cart, stand, tripod, bracket, or table
specified by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/
apparatus combination to avoid injury from tip-over.
Unplug this apparatus during lightning storms or when unused for
long periods of time.
Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as power supply
cord or plug is damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to rain or moisture,
does not operate normally, or has been dropped.
The apparatus should be used in non tropical climate.
Rotel products are designed to comply with international
directives on the Restriction of Hazardous Substances
(RoHS) in electrical and electronic equipment and the
disposal of Waste Electrical and Electronic Equipment
(WEEE). The crossed wheelie bin symbol indicates
compliance and that the products must be appropriately
recycled or processed in accordance with these directives.
This symbol means that this unit is double insulated.
An earth connection is not required.
Important Safety Instructions
You must allow a minimum 10 cm or 4 inches of unobstructed
clearance around the unit.
WARNING: The rear panel power cord connector is the mains power
disconnect device. The device must be located in an open area that
allows access to the cord connector.
The unit must be connected to a power supply only of the type and
voltage specified on the rear panel. (USA: 120 V/60Hz, EC: 230V/50Hz)
Connect the component to the power outlet only with the supplied power
supply cable or an exact equivalent. Do not modify the supplied cable.
Do not use extension cords.
The mains plug is the disconnect of the unit. In order to completely
disconnect the unit from the supply mains, remove the main plug from
the unit and the AC power outlet. This is the only way to completely
remove mains power from the unit.
The batteries in the remote control should not be exposed to excessive
temperature such as sunshine, fire or other heat sources. Batteries
should be recycled or disposed as per state and local guidelines.
12
3
Pin Assignments
Balanced Audio (3 pole XLR):
Pin 1: Ground / Screen
Pin 2: In phase / +ve / Hot
Pin 3: Out of phase / -ve / Cold

8RC‑1572 Stereo Control Amplifier
Important! : The 12V trigger cables will override the Rotel Link commands. Do not connect the 12V trigger cable if Rotel Link is connected.
Important : Les connexions trigger 12v sont prioritaires sur les commandes Rotel Link. Ne branchez pas de câble trigger 12 V si une connexion
Rotel Link a été réalisée.
Wichtig! Die 12V‑Trigger‑Kabel umgehen die Rotel Link‑Befehle. Schließen Sie kein 12V‑Trigger‑Kabel an, wenn die Rotel Link‑Verbindung
hergestellt wurde.
¡Importante!: Los cables para señal de disparo de 12V bloquearán las órdenes de control vía Rotel Link. Por lo tanto, cuando el Rotel Link esté
conectado no conecte ningún cable para señal de disparo de 12V.
Importante! I segnali Trigger 12 V hanno la precedenza sui comandi Rotel Link, pertanto non effettuare i collegamenti Trigger 12 V se si utilizza
il bus Rotel Link.
Belangrijk: De 12V trigger aansluitingen hebben voorrang op de Rotel Link opdrachten. Sluit dus niet de 12V triggerkabel en Rotel Link tegelijkertijd
aan.
Viktigt! Kablarna för 12 V styrsignaler åsidosätter Rotel Link‑kommandon. Anslut inte kablar för 12 V styrsignal om det nns en Rotel Link‑anslutning.
Внимание! : 12-В триггерный сигнал имеет приоритетнад командами шины Rotel Link. Не подсоединяйте кабель 12-В триггерного
сигнала, если уже сделано соединение по Rotel Link.
RP-565D
CLASS 1
LASER PRODUCT
APPAREIL LASER
DE CLASSE 1
ROTEL RCD-1572
GND
ROTEL RC-1572
Figure 6 : Rotel Link and 12V Trigger Connections
Branchements Rotel Link et trigger 12 V
Rotel Link‑ und 12V‑Trigger‑Anschlüsse
Conexiones Rotel Link y para Señal de Disparo de 12V
De Rotel Link en 12V trigger aansluitingen
Collegamenti Rotel Link e segnali Trigger 12 V
Rotel Link-anslutning och 12 V-anslutning för styrsignal
Подсоединение Rotel Link и 12-В триггерного сигнала

11
English
About Rotel
Our story began over 50 years ago. Over the decades, we have received
hundreds of awards for our products and satisfied hundreds of thousands
of people who take their entertainment seriously - like you!
Rotel was founded by a family whose passionate interest in music led them
to manufacture high-fidelity components of uncompromising quality. Through
the years, that passion has remained undiminished and the family goal of
providing exceptional value for audiophiles and music lovers, regardless
of their budget, is shared by all Rotel employees.
Rotel’s engineers work as a close team, listening to, and fine tuning, each
new product until it reaches their exacting musical standards. They are
free to choose components from around the world in order to make that
product the best they can. You are likely to find capacitors from the United
Kingdom and Germany, semiconductors from Japan or the United States,
while toroidal power transformers are manufactured in Rotel’s own factory.
We all have concerns about our environment. And, as more and more
electronics are produced it is especially important for a manufacturer to do all
it can to engineer products that have a minimum impact on the environment.
At Rotel, we are proud to do our part. We have reduced the lead content
in our products by using special lead-free ROHS solder and components.
Our engineers continually strive to improve power supply efciency without
compromise to quality. When in standby mode Rotel products use minimal
power to meet global Standby Power Consumption requirements.
The Rotel factory is also doing their part to help the environment through
constant improvements to product assembly methods for a cleaner and
greener manufacturing processes.
All of us at Rotel thank you for buying this product. We are sure it will bring
you many years of enjoyment.
Getting Started
Thank you for purchasing the Rotel RC-1572 Stereo Control Amplifier. When
used in a high-quality music audio system, your Rotel product will provide
years of musical enjoyment.
The RC-1572 is a full featured, high performance component. All aspects
of the design have been optimized to retain the full dynamic range and
subtle nuances of your music. The RC-1572 has a highly regulated power
supply incorporating a Rotel custom-designed toroidal power transformer
and custom-made slit foil capacitors. This low impedance power supply has
ample power reserves, which enables the RC-1572 to easily reproduce the
most demanding audio signals. This type of design is more expensive to
manufacture, but it is better for the music.
The printed circuit boards (PCB) are designed with Symmetrical Circuit Traces.
This ensures that the precise timing of the music is maintained and faithfully
recreated. The RC-1572 circuitry uses metal film resistors and polystyrene
or polypropylene capacitors in important signal paths. All aspects of this
design have been examined to ensure the most faithful music reproduction.
The main functions of the RC-1572 are easy to install and use. If you have
experience with other stereo systems, you shouldn’t find anything perplexing.
Simply plug in the associated components and enjoy.
Contents
Important Safety Instructions .......................................... 2
Figure 1: Controls and Connections 3
Figure 2: RR-AX93 Remote Control 4
Figure 3: Analog Inputs and Output Connections 5
Figure 4: Balanced (XLR) Input and Output Connections 6
Figure 5: Digital Inputs Connection 7
Figure 6: Rotel Link and 12V Trigger Connections 8
Figure 7: Front USB Input 9
Important notes 10
About Rotel...................................................... 11
Getting Started ................................................... 11
A Few Precautions 12
Placement 12
Cables 12
The RR-AX93 Remote Control ........................................ 12
Second Amplifier Remote Code 12
Remote Control Batteries 12
AC Power and Control .............................................. 12
AC Power Input ] 12
Power Switch and Power Indicator 1A 12
12V Trigger Connection = 13
Input Signal Connections ............................................ 13
Phono Input e and Ground Connection 9 13
Line Level Inputs e 13
Balanced (XLR) Inputs u 13
Digital Inputs i13
Output Connections ................................................ 13
MONO SUB Out output r 13
Preamp Output t 13
Balanced (XLR) Output y 13
Headphone Output 6 ....................................................... 13
Remote Sensor 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Display 3...................................................... 14
Front USB Input 5................................................ 14
APTX Bluetooth Connection [........................................14
Rear USB Power port q............................................ 14
Audio Controls .................................................... 14
Volume Control 4G 14
Balance Control 8C 14
Tone Control Bypass 8C 14
Bass and Treble Tone Controls 8C 14
Function Control 7K 14
Dimmer Control ................................................... 15
Display Dimmer 8B 15
POWER LED Dimmer 8 15
Rotel Link 0.................................................... 15
EXT REM IN Jack -............................................... 15
RS232 w....................................................... 15
PC-USB Input o.................................................. 15
Network Connection p............................................. 15
Settings Menu .................................................... 16
Troubleshooting ................................................... 17
Power Indicator Is Not Illuminated 17
Fuse replacement 17
No Sound 17
Cannot Connect via Bluetooth 17
Playable Audio Format 17
Specifications..................................................... 18

12 RC‑1572 Stereo Control Amplifier
A Few Precautions
WARNING: To avoid potential damage to your system, turn off ALL
the components in the system when connecting or disconnecting the
loudspeakers or any associated components. Do not turn the system
components back on until you are sure all the connections are correct
and secure.
Please read this manual carefully. In addition to basic installation and
operating instructions, it provides valuable information on various RC-1572
system configurations as well as general information that will help you get
optimum performance from your system. Please contact your authorized
Rotel dealer for answers to any questions you might have. In addition, all
of us at Rotel welcome your questions and comments.
Save the RC-1572 shipping carton and all enclosed packing material for
future use. Shipping or moving the RC-1572 in anything other than the
original packing material may result in severe damage to your amplifier.
If included in the box please fill out and send in the owner’s registration
card. Also be sure to keep the original sales receipt. It is your best record
of the date of purchase, which you will need in the event warranty service
is ever required.
Placement
Like all audio components that handle low-level signals, the RC-1572 can
be affected by its environment. Avoid placing the RC-1572 on top of other
components. Also avoid routing audio signal cables near power cords. This
will minimize the chance it will pick up hum or interference.
We recommend installing the RC-1572 in furniture designed to house audio
components. Such furniture is designed to reduce or suppress vibration which
can adversely affect sound quality. Ask your authorized Rotel dealer for advice
about component furniture and proper installation of audio components.
The RC-1572 is supplied with an RR-AX93 remote control and must be
placed where the infrared signal from the remote can reach the front panel
Remote Sensor.
Cables
Be sure to keep the power cords, digital signal cables and regular audio
signal cables in your installation away from each other. This will minimize
the chance of the regular audio signal cables picking up noise or interference
from the power cords or digital cables. Using only high quality, shielded
cables will also help to prevent noise or interference from degrading the
sound quality of your system. If you have any questions see your authorized
Rotel dealer for advice about the best cable to use with your system.
The RR-AX93 Remote Control
Some functions can be done with either the front panel controls, or the
supplied RR-AX93 remote control. When these operations are described,
the square call out numbers refer to the main unit, while the encircled letters
refer to the remote control.
Second Amplifier Remote Code
The factory setting is remote code 1. If you find that the remote is conflicting
with other Rotel amplifiers, you can change to remote code 2 with the
following steps.
1. From the remote control press Tuner Kand 2 Oat the same time for 5
seconds, to set the remote control to send Audio Code 2.
2. Point the remote at the unit and press 2 Obutton for 14 seconds. The
unit will show “AUDIO CODE SET 1 -> 2”.
3. Repeat the above procedure and press “1” button instead of “2” to
change the unit back to Code 1.
NOTE: The remote control can be used to operate the basic functions
of Rotel tuners and CD players. Remote control buttons labeled
FIJNOQ can be used to operate CD or Tuner functions in your
system. For the remote control to operate properly, make sure both
the remote control and the CD or Tuner are both in same remote
code, either Code 1 or 2. For more information please contact your
authorized Rotel dealer.
Remote Control Batteries
Two UM-4/AAA size batteries (supplied) must be installed before the remote
control can be used. To install the batteries, remove the cover on the back of
the RR-AX93. Install the batteries as shown in the illustration in the battery
well. Test the control for proper operation, then replace the cover. When
the batteries become weak the remote control won’t operate the RC-1572
consistently. Installing fresh batteries should eliminate the problem.
AC Power and Control
AC Power Input ]
Your RC-1572 is configured at the factory for the proper AC line voltage in
the country where you purchased it (either 120 volts AC or 230 volts AC
with a line frequency of either 50 Hz or 60 Hz). The AC line configuration
is noted on a decal on the back panel.
NOTE: Should you move your unit to another country, it may be possible
to reconfigure it for use on a different line voltage. Do not attempt to
perform this conversion yourself. Opening the enclosure of the unit
exposes you to dangerous voltages. Consult a qualified service person
or the Rotel factory service department for information.
NOTE: Some products are intended for sale in more than one country
and as such are supplied with more than one AC cord. Please only use
the one appropriate for your country/region.
RC-1572 should be plugged directly into a polarized wall outlet using the
supplied cable or other compatible cable as recommended by your authorized
Rotel dealer. Do not use an extension cord. A heavy duty multi-tap power
outlet strip may be used if it (and the wall outlet) is rated to handle the current
demanded by the RC-1572 and all the other components connected to it.
If you are going to be away from home for an extended period of time
such as a month long vacation, it is a sensible precaution to unplug the
RC-1572 (as well as other audio and video components) while you are away.
POWER Switch and Power Indicator 1A
Press the front panel Power Switch button 1to turn the unit on. The Power
Indicator light is illuminated when the unit is on. Press the Power Switch
button again to turn the unit off.

13
English
When the power switch is in the ON position, the remote control ON and
OFF buttons Amay be used to activate the RC-1572. In Standby mode the
power LED remains illuminated, but the display is turned OFF.
12V TRIGGER Connection =
See Figure 6
Some audio components can be turned on automatically when they receive a
12V turn on “signal”. The two 12V Trigger Outputs on the RC-1572 provide
the required signal. Connect compatible components to the RC-1572 with
a conventional 3.5mm mini mono plug cable. When the RC-1572 is in
standby mode or turned off, the trigger signal is disabled, so the components
controlled by it will be turned off.
NOTE: If you are using other units in the series with Rotel link, please
use the Rotel Link connection to turn the units on or off. Do not connect
both the Rotel Link and 12V trigger cables. The 12V trigger’s power
on or off features will override the Rotel Link features.
Input Signal Connections
NOTE: To prevent loud noises that neither you nor your speakers will
appreciate, make sure the system is turned off when you make any
signal connections.
Phono Input e and Ground Connection (GND) 9
See Figure 3
Plug the cable from the turntable into the appropriate left and right phono
inputs. If the turntable has a “ground” wire, connect it to the screw terminal
to the left of the Phono inputs. This will help prevent hum and noise.
Line Level Inputs e
See Figure 3
The CD, Tuner, and Aux inputs of the amplifier are analog “line level” inputs.
These inputs are for connecting components such as CD players or other
audio playback devices with an analog audio output.
The left and right channels are clearly labeled and should be connected to
the corresponding channels of the source component. The Left connectors
are white, the Right connectors are red. Use high quality RCA cables for
connecting input source components to the RC-1572. Ask your authorized
Rotel dealer for advice about cables.
Balanced (XLR) Inputs u
See Figure 4
A pair of balanced XLR inputs accept audio signals from CD player, Blu-ray
player or other source components with XLR outputs.
NOTE: You should choose only one method of analog connection from
a source component to RC-1572. Do not connect both the RCA and
XLR outputs of a source component to the RC-1572 at the same time.
Digital Inputs i
See Figure 5
There are two sets of digital inputs labeled COAXIAL 1 and 2, OPTICAL
1 and 2. Connect the COAXIAL or OPTICAL PCM outputs of your source
component into these sockets. The digital signals will be decoded and
played by the RC-1572. The unit is capable of decoding PCM signals up
to 24 bit, 192kHz.
Output Connections
MONO SUB Output r
There are 2 connectors for mono subwoofer output to connect to a subwoofer.
These mono outputs are summed with both the left and right audio signal. They
are parallel outputs allowing 2 subwoofers to be connected to the RC-1572.
Preamp Output t
See Figure 3
A pair of RCA connectors supplies an analog output signal from the RC-1572
to a power amplifier with RCA unbalanced input connectors.
Balanced (XLR) Output y
See Figure 4
A pair of XLR balanced connectors supplies an analog output signal from
the RC-1572 to a power amplifier with XLR balanced input connectors.
NOTE: Do not connect both the RCA and XLR to the same amplifier
at the same time.
NOTE: Changes to the settings of the Volume, Balance or Tone controls
affect the signal from the XLR and Preamp outputs.
Headphone Output 6
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
preamp outputs. In most instances you should turn off the power amplifier
when listening to headphones.
NOTE: Because the sensitivity of speakers and headphones can
vary widely, always reduce the volume level before connecting or
disconnecting headphones.
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 configuration menu
options of the amplifier.

14 RC‑1572 Stereo Control Amplifier
Front USB Input 5
See Figure 7
The front USB input can be connected to an iPhone, iPad or iPod device
providing music playback. 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.
APTX Bluetooth Connection [
The Bluetooth Antenna [ on the RC-1572’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
enter “0000” on your device. The RC-1572’s supports both traditional
Bluetooth and APTX Bluetooth audio streaming.
Rear USB Power Port q
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 configured to remain powered even when the RC-1572
is in standby mode through the front panel setup menu (See USB POWER
option on page 16).
This configuration option allows the attached streaming source to remain
powered for use with the Signal Sense function for automatic power on/
off control of the amplifier.
NOTE: When configured to provide continuous power to the rear panel
USB port the RC-1572 will consume additional power even when in
standby mode.
Audio Controls
Volume Control 4G
Turn the controls 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 Hbutton to completely
mute the volume.
Balance Control 8C
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 8button to toggle the front display to
BALANCE setting mode. Then press the - or + buttons 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 RC-1572.
To make temporary changes not saved after power off, from the remote
control press the BAL C button to access the BALANCE setting menu, then
press the up/down/left/right Earrow buttons to adjust.
Tone Control Bypass 8C
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 8button to toggle to the Bypass control
then press the - or + buttons 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 RC-1572.
To temporarily changes the Tone Control Bypass, press the BYPASS Cbutton
on the remote control to toggle the Bypass mode enabled and disabled.
Bass and Treble Controls 8C
To set the Bass or Treble controls from the front panel , press the MENU 8
button to toggle to the Tone control menu and press the ENTER 8button
to toggle to either the BASS or TREB Setting menu. Then press the - or +
button on the front panel to adjust the value. The Bass and Treble values
range from -10 to +10.
NOTE: These settings are saved permanently including after powering
off the RC-1572.
To temporarily change the Bass and Treble settings from the remote control,
press the BASS or TREB Cbutton, then press the up/down/left/right E
arrow buttons on the remote control to adjust the value.
NOTE: Bass and Treble changes are only available when Tone Bypass
is disabled (see Tone Control Bypass section).
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.
Source Input Selector 7K
Press the corresponding input button on the front panel 7or remote control
Kto select the desired listening source.
Push the front panel source buttons to toggle between Optical 1 - 2 and
Coaxial 1- 2 or use the dedicated source button on the remote control.
Dimmer Control
Display Dimmer 8B
To change the brightness of the front display, press the MENU 8button
to toggle to the DIMMER Setting. Then press the - or + buttons on the front
panel to change the display brightness.
NOTE: This setting is saved permanently including after powering off
the RC-1572.
To temporarily change the display brightness, press the DIM Bbutton on
the remote control.

15
English
POWER LED Dimmer 8
To change the brightness of the Power LED on the front panel, press the
MENU 8 button to toggle to the POWER LED Settings. Then press the - or
+ buttons on the front panel to change the LED brightness.
Valid settings include: BRIGHT, MID, DIM.
NOTE: This setting is saved permanently including after powering off
the RC-1572.
Rotel Link 0
See Figure 6
The ROTEL LINK OUT connection can be made with the stereo 3.5 mm cable
(supplied) to a Rotel product with ROTEL LINK IN connection including a
CD player.
These allow the attached Rotel products to communicate with each other and
be controlled via the Rotel App (available for download on the iTunes®store).
NOTE: Only the Rotel Link cables supplied with this product should be
used. These 3.5 mm cables have WHITE connector ends and should
not be confused with the 12 Volt Trigger cables that have BLACK
connector ends.
EXT REM IN Jack -
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.
RS232 w
The RC-1572 can be controlled via RS232 for integration with automation
systems. The RS232 input accepts a standard straight DB-9 Male-to-Female
cable.
For additional information on the connections, software, and operating codes
for RS232 control of the RC-1572, contact your authorized Rotel dealer.
PC-USB Input o
See Figure 5
Connect this input using the supplied USB cable to the PC-USB socket of
your computer.
The RC-1572 supports both USB Audio Class 1.0 and USB Audio Class
2.0 modes. Windows computers do not require installation of a driver for
USB Audio Class 1.0 and support playback of audio up to 96kHz sampling
rates. The Factory Default setting is USB Audio Class 1.0.
To take advantage of USB Audio Class 2.0 audio playback supporting
up to 384kHz sampling rates you will need to install the Windows driver
supplied on CD included with the RC-1572. You will also need to switch
the RC-1572 to USB Audio Class 2.0 playback mode with the following:
• Press MENU on the front panel until “PC-USB AUDIO CLASS” appears
on the display.
• Select “2.0” using the “-” button then press “ENTER”.
• Power cycle the RC-1572 and reboot your PC after changing the USB
Audio mode to ensure both units are properly configured.
Many audio playback applications do not support 384kHz sampling rate.
Please confirm your audio player supports 384kHz audio and you have
384kHz audio files to properly playback this sample rate. Also, you may
need to configure the audio driver in your PC to output 384kHz or your
computer may “down sample” to a lower audio sample rate. For more
information please refer to your audio player or operating system information.
NOTE: USB Audio Class 2.0 required installation of the Windows PC
driver on the CD ROM included with the RC-1572.
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.
NOTE: The RC-1572 supports both DSD and DOP audio playback
in 1X and 2X formats. Consult your audio player to confirm proper
operation for playback of these audio formats.
Network Connection p
The RC-1572 can be attached to a network using the rear panel NETWORK
socket p. The NETWORK configurations allow both STATIC and DHCP
IP addressing. See the Network section of this manual under Setting Menu
for IP address configuration information.
The NETWORK connection allows software updates to be downloaded from
the Internet. The NETWORK connection also allows IP control for integration
with automation systems.
For additional information on the IP control please contact your authorized
Rotel dealer.
Settings Menu
You can access the settings menu from the front panel by pressing the
MENU 8 button or the SETUP Dbutton on the remote control. You can
change the value of the selected option by pressing the +/- buttons on the
front panel or up/down/left/right Earrow buttons on the remote control.
Step through the sub-menus by pressing the MENU 8button on the front
panel or SETUP Dbutton on the remote control.
• 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 the ENT button on the remote control to toggle between the tone setup
options. (For more information on Tone Control refer to the Tone Control
Bypass, Bass and Treble control sections.)

16 RC‑1572 Stereo Control Amplifier
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.
• AUX VOL: VARIABLE (disabled) is factory default.
• USB VOL: VARIABLE (disabled) is factory default.
• PC-USB VOL: VARIABLE (disabled) is factory default.
• OPT1 VOL: VARIABLE (disabled) is factory default.
• OPT2 VOL: VARIABLE (disabled) is factory default.
• COAX1 VOL: VARIABLE (disabled) is factory default.
• COAX2 VOL: VARIABLE (disabled) is factory default.
• BTOOTH VOL: VARIABLE (disabled) is factory default.
NOTE: The Volume knob on the front panel and Volume +/- buttons
on the IR remote are disabled when the volume is Fixed. To disable this
feature set the Fixed Volume level to “Variable”.
• PC-USB AUDIO CLASS: Changes supported PC-USB Audio Class of the
attached device.
NOTE: Some computers attached to the PC-USB do not support USB
Audio Class 2.0 and do not support 32/384 audio playback. If needed
the PC-USB can be configured for USB Audio Class 1.0. Please consult
your computer operating system for details.
• NETWORK: Shows the network connection status and to view/configure
the network settings. If the network is properly configured and attached,
“Connected” will be displayed. To view or modify the network settings,
press the ENTER button.
The RC-1572 supports both DHCP and STATIC IP addressing. Select the
desired IP address method and press ENTER.
If DHCP is selected you can refresh IP address by pressing ENTER or press
MENU to view IP address information. Press the MENU button to toggle
through IP address settings. If the IP address is renewed the network will
be tested and connection status reported.
If STATIC IP address mode is selected you must configure all settings for the
network including IP Address, Subnet Mask, Gateway and DNS Server.
Use the up/down/left/right arrow buttons or the +/- buttons to adjust
the values and press ENTER to move to the next value. When the proper
IP information is configured press MENU to go to the next setting. After
entering the STATIC IP address information the network will be tested and
connection status reported.
NOTE: For more information regarding network connection please
contact your authorized Rotel dealer.
NOTE: A network connection is not required for the RC-1572 to
operate.
NOTE: These settings are stored permanently even after the RC-1572
is powered off.
• BALANCE: Changes left/right balance (For more information on Balance
sections).
NOTE: This setting is stored permanently even after the RC-1572 is
powered off.
• DIMMER: Dims the display.
NOTE: This setting is stored permanently even after the RC-1572 is
powered off.
• POWER LED: Dims the Power LED on the front panel.
NOTE: This setting is stored permanently even after the RC-1572 is
powered off.
• 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.
• POWER OPTION: Enables the RC-1572 to be controlled via the network
port when attached to an automation system. The power consumption is
higher in Quick Power mode. If network control is not required select the
Normal Power mode. “Normal” is the factory default.
Valid settings include: Normal, Quick.
NOTE: When the POWER OPTION is configured to Quick, the RC-
1572 will consume additional power in standby mode.
• USB POWER: This option allows the rear panel USB connector to provide
power, even when the RC-1572 is in standby mode.
To enable the continuous power mode select the ALWAYS option. To provide
power only when the RC-1572 is powered on, select the NORMAL option.
The default for USB POWER is set to NORMAL.
NOTE: The front panel power button must be in the ON position to
supply power to the rear panel USB connector.
NOTE: When the USB POWER is configured to ALWAYS the RC-1572
will consume additional power in standby mode to supply USB power.
• AUTO POWER OFF: The RC-1572 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, USB, PC-USB, Optical 1, Optical 2, Coax 1, Coax 2 or

17
English
• MAIN: This shows the current software version loaded into the RC-1572.
The software can be updated if the RC-1572 is properly connected to
the Internet.
• Press ENTER to check if a new software version is available.
• If a new software version is available press the + button on the front
panel or the up/right button on the remote control to select YES then
press ENTER button to begin the software update process.
• The new software will be downloaded from the Internet. The RC-1572
will power cycle when the software update is complete.
NOTE: Do NOT power off the RC-1572 during the software update
process.
NOTE: It is recommended to Reset Factory Defaults after the software
update is complete.
• PC-USB: This shows current loaded software version for PC-USB processor.
• SIGNAL SENSE: Checks if a digital audio signal is present on the congured
Signal Sense input. When this input is selected as the active listening
source, the RC-1572 monitors the digital data stream to determine if
there is audio. If there is no audio detected for 10 minutes, the RC-1572
will enter Signal Sense Standby Mode. When in Signal Sense Standby
Mode and the RC-1572 detects audio on Signal Sense input, the unit
will automatically power on. To disable this function, select the DISABLE
option which is the factory default setting.
NOTE: To use the Signal Sense function, the RC-1572 must be actively
listening to the configured Signal Sense source. If a source other than
the configured Signal Sense source is selected, the automatic power
off and power on functions will not be active. Example: if the Signal
Sense source is configured as COAX 1 and the unit is listening to OPT
2, the signal sense functions will not be activated.
NOTE: When the RC-1572 enters standby mode via the remote
control, the Signal Sense function will not operate until the unit detects
the audio has stopped for the minimum 10 minute time-out period. This
prevents the unit from immediately powering back on if there is still
active audio playing.
NOTE: When the SIGNAL SENSE function is activated, the RC-1572
will consume additional power in signal sense standby mode.
• FACTORY DEFAULT: This sets the unit back to the original state as when
it left the factory. Press the + button on the front panel or the Right button
on the remote control to select <YES> then press the ENTER button on the
front panel or the ENT button on the remote control.
NOTE: All previously configured options will be erased and reset to
the factory default settings.
Troubleshooting
Most difficulties in audio systems are the result of incorrect connections,
or improper control settings. If you encounter problems, isolate the area
of the difficulty, check the control settings, determine the cause of the fault
and make the necessary changes. If you are unable to get sound from the
RC-1572, refer to the suggestions for the following conditions:
Power Indicator Is Not Illuminated
The Power Indicator ring around the power button and the basic items in the
Display window should be illuminated whenever the RC-1572 is plugged
into the wall power outlet and the POWER switch is pushed in. If it does
not illuminated, test the power outlet with another electrical device, such as
a lamp. Be sure the power outlet being used is not controlled by a switch
that has been turned off.
Fuse Replacement
If another electrical device works when plugged into the power outlet, but
the Power Indicator still will not illuminated when the RC-1572 is plugged
into the wall outlet, it indicates that the internal power fuse may have blown.
If you believe this has happened, contact your authorized Rotel dealer to
get the fuse replaced.
No Sound
Check the signal source to see if it is functioning properly. Make sure the
cables from the signal source to the RC-1572 inputs are connected properly.
Check all the wiring between the RC-1572 and the power amplifier, and
the speakers.
Cannot Connect via Bluetooth
If you cannot pair your Bluetooth enabled device to the RC-1572, delete the
memory of the previous connection on the RC-1572 and on your device.
On your device this is often listed as “Forget this Device”. Then try to make
the connection again.
Playable Audio Format
USB Apple (iPhone, iPod, iPad)
Format Notes
Any supported file
loaded to Apple
device.
Any supported file loaded to Apple device. Phone may
resample depending on stored format. May exclude
Apps designed to play formats not originally supported
by the sending device.
APTX Bluetooth
Format Notes
Any format supported
by the sending device. May exclude Apps designed to play formats not originally supported by the sending device.
PC-USB
Format Notes
Format determined
by the Media Player/
Server software that
you use.
Any supported format by the PC software:
PCM Audio:
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz,
192 kHz, 384 kHz
16 Bit, 24 Bit, 32 Bit
DSD64 and DSD128
Coax/Optical
Format Notes
SPDIF LPCM 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
16 Bit, 24 Bit

18 RC‑1572 Stereo Control Amplifier
Specifications
Total Harmonic Distortion (20 Hz - 20 kHz) < 0.004%
Intermodulation Distortion (60 Hz : 7 kHz, 4:1) < 0.004%
Input Sensitivity / Impedance
Phono Input (MM) 3 mV / 47k ohms
Line Level Inputs (RCA) 200 mV / 100k ohms
Line Level Inputs (XLR) 300 mV / 100k ohms
Input Overload
Phono Input 62 mV
Line Level Inputs 4 V
Output Level
Line Level (RCA) 1 V
Balance (XLR) 2 V
Frequency Response
Phono Input 20 Hz - 20k Hz, 0 ± 0.3 dB
Line Level Inputs 10 Hz - 100k Hz, 0 ± 0.3 dB
Tone Controls
Bass ± 10 dB at 100Hz
Treble ± 10 dB at 10kHz
Signal to Noise Ratio (IHF “A” weighted)
Phono Input 80 dB
Line Level Inputs 110 dB
Channel Separation >64 dB
Digital Section
Frequency Response 20 Hz - 20k Hz (0 ± 0.5dB Max)
Signal to Noise Ratio (IHF ”A” weighted) 100 dB
Input Sensitivity / Impedance 0 dBfs / 75 ohms
Coaxial/Optical Digital Signals SPDIF LPCM
(up to 192k Hz 24 bit)
PC-USB USB Audio Class 1.0
(up to 96k Hz 24 bit)
USB Audio Class 2.0
(up to 384k Hz 32bit)*
*Driver installation required
DSD and DoP support
General
Power Requirements:
USA: 120 volts, 60 Hz
EC: 230 volts, 50 Hz
Power Consumption 35 watts
Standby Power Consumption < 0.5 watts
BTU (at 13.5 watts) 65 BTU/h
Dimensions (W x H x D) 431 x 99 x 338 mm
(17 x 3 7/8x 13 1/4ins)
Front Panel Height 2U (88.1 mm, 3 1/2ins)
Weight (net) 7.4 kg, 16.3 lbs.
All specifications are accurate at the time of printing.
Rotel reserves the right to make improvements without notice.
Rotel and the Rotel Hi-Fi logo are registered trademarks of The Rotel Co., Ltd, Tokyo,
Japan.
“Made for iPod,” and “Made for iPhone,” means that an electronic accessory
has been designed to connect specifically to iPod or iPhone, respectively, and
has been certified by the developer to meet Apple performance standards.
Apple is not responsible for the operation of this device or its compliance with
safety and regulatory standards. Please note that the use of this accessory
with iPod, or iPhone may affect wireless performance.
iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks of
Apple Inc., registered in the U.S. and other countries.