RA1570 - Receiver ROTEL - Free user manual and instructions

USER MANUAL RA1570 ROTEL

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 all the instructions before connecting or operating the component. Keep this manual so you can refer to these safety instructions. Heed all warnings and safety information in these instructions and on the product itself. Follow all operating instructions. Clean the enclosure only with a dry cloth or a vacuum cleaner. Do not use this unit near water. You must allow a minimum 10 cm or 4 inches of unobstructed clearance around the unit. Do not place the unit on a bed, sofa, rug, or similar surface that could block the ventilation openings. If the unit is placed in a bookcase or cabinet, there must be ventilation of the cabinet to allow proper cooling. Keep the component away from radiators, heat registers, stoves, or any other appliance that produces heat. 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

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. A polarized plug has two blades, with one wider than the other. A grounding plug has two blades plus a third grounding prong. These are provided for your safety. Do not defeat grounding and/or polarization safety provisions. If the supplied plug does not fit your outlet, please consult an electrician for replacement of the obsolete outlet. Do not use extension cords. The main plug of the power cordset is a disconnect device of the apparatus. In order to completely disconnect the apparatus from the supply mains, the main plug of the power cordset should be unplugged from the mains (AC) outlet. The standby LED indicator will not be lit up to show the power cord is unplugged. The disconnect device shall remain readily operable. Do not route the power cord where it will be crushed, pinched, bent, exposed to heat, or damaged in any way. Pay particular attention to the power cord at the plug and where the cord exits the back of the unit. The power cord should be unplugged from the wall outlet during a lightning storm or if the unit is to be left unused for a long period of time. Use only accessories specified by the manufacturer. Use only with a cart, stand, rack, bracket or shelf system recommended by Rotel. Use caution when moving the unit in a stand or rack to avoid injury from a tip-over. Use Class 2 wiring for speaker connections to ensure proper installation and minimize the risk of electrical shock. Immediately stop using the component and have it inspected and/or serviced by a qualified service agency if:

• The power supply cord or plug has been damaged.

• Objects have fallen or liquid has been spilled into the unit.

• The unit has been exposed to rain.

• The unit shows signs of improper operation.

• The unit has been dropped or damaged in any way. The batteries in the remote control should not be exposed to excessive temperature such as sunshine, fire or other heat sources. Place the unit on a on a fixed, level surface strong enough to support its weight. Do not place it on a moveable cart that could tip over.

Power Switch and Power Indicator

12V Trigger Connection

Input Signal Connections

and Ground Connection 10 Line Level Inputs

Speaker Selection 11 Speaker Wire Selection 11 Polarity and Phasing 11 Speaker Connection

K 12 BASS and TREBLE Tone Controls

Computer I/O Connector

• Protection Circuit p. 13
• Settings Menu p. 13
• Troubleshooting p. 14
• Power Indicator Is Not Illuminated 14 Fuse replacement 14 No Sound 14 Cannot Connect via Bluetooth 14 Playable Audio Format 14 Specifications Getting Started Thank you for purchasing the Rotel RA‑1570 Stereo Integrated Amplifier. When used in a high-quality music audio system, your Rotel product will provide years of musical enjoyment. The RA‑1570 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 RA‑1570 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 RA‑1570 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 insures that the precise timing of the music is maintained and faithfully recreated. The RA‑1570 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 RA‑1570 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. A Few Precautions p. 159

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. Pay particular attention to the speaker wires. There must be no loose strands that could contact the other speaker wires, or the chassis of the amplifier. Please read this manual carefully. In addition to basic installation and operating instructions, it provides valuable information on various RA‑1570 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 shipping carton and all enclosed packing material for future use. Shipping or moving the RA‑1570 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 RA‑1570 can be affected by its environment. Avoid placing the RA‑1570 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. The RA‑1570 generates heat as part of its normal operation. The heat sinks and ventilation openings in the amplifier are designed to dissipate this heat. The ventilation slots in the top cover must be open. There should be 10 cm (4 inches) of clearance around the chassis, and reasonable airflow through the installation location, to prevent the amplifier from overheating. Remember the weight of the amplifier when you select an installation location. Make sure that the shelf or cabinet can support it. We recommend installing the RA‑1570 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 RA‑1570 is supplied with an RR‑AX92 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-AX92 Remote Control Some functions can be done with either the front panel controls, or the supplied RR‑AX92 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 J and 2 G at the same time to set

the remote control to send Audio Code 2.2. Point the remote at the unit and press 2 G key for 8 seconds. The unit will show “Audio Custom Code 1 ‑> 2”.3. Repeat the above procedure and press “1” key 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 keys labeled GHMN can be used to operate CD or Tuner functions in your system. For the remote to operate properly, make sure both the remote and the CD or Tuner are both in same remote code, either Code 1 or 2. 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‑AX92. 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 RA‑1570 consistently. Installing fresh batteries should eliminate the problem.10 RA‑1570 Stereo Integrated Amplifier AC Power and Control AC Power Input

Because of its relatively high power rating, the RA‑1570 can draw considerable current. Therefore, it should be plugged directly into a 2-pin polarized wall outlet. 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 RA‑1570 and all the other components connected to it. Your RA‑1570 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 RA‑1570 to another country, it is possible to reconfigure your amplifier for use on a different line voltage. Do not attempt to perform this conversion yourself. Opening the enclosure of the RA‑1570 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. 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 your amplifier (as well as other audio and video components) while you are away. POWER Switch and Power Indicator

Press the front panel Power Switch button, to turn the unit on. The Power Indicator light is illuminated when the unit is on. Press Power Switch button again to turn the unit off. When the power switch is in the ON position, the remote control ON and OFF buttons may be used to activate the RA‑1570. In Standby mode the power LED remains lit, but the display is turned off. NOTE: Place the self adhesive ring over the light surrounding the Power switch if the blue light is too bright. 12V TRIGGER Connection

Some audio components can be turned on automatically when they receive a 12V turn on “signal”. The two 12V Trigger Outputs of the RA‑1570 provide the required signal. Connect compatible components to the RA‑1570 with a conventional 3.5mm mini plug cable. When the RA‑1570 is in turn off mode, the trigger signal is interrupted, so the components controlled by it are 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

See Figure 3,4,5 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

and Ground Connection (GND) 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. It will help prevent hum and noise. Line Level Inputs

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 RA‑1570. Ask your authorized Rotel dealer for advice about cables. Balanced (XLR) Inputs

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 RA‑1570. Do not connect both the RCA and XLR outputs of a source component to the RA‑1570 at the same time. Digital Signal Inputs

See Figure 5. There are two sets of digital inputs labeled COAX 1 and 2, OPT 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 RA‑1570. The unit is capable of decoding PCM signals up to 24 bit, 192kHz. Preamp Outputs

The RA‑1570 has a set of preamp outputs labeled PRE OUT 1. The signal from the source selected with the Function Selector is always available from these outputs. Typically the PRE OUT 1 output is used to provide a signal to another integrated amplifier or power amplifier, which is used to drive remote speakers. NOTE: Changes to the settings of the Volume, Balance or Tone controls affect the signal from the Preamp Outputs.11 Preamp / Power Amp Jumpers

These connectors, labeled ”PRE OUT 2” and “MAIN IN”, are normally connected by a set of solid metal jumper connectors. They provide a convenient insertion point for virtually any type of signal processor. To use these connectors, pull out the jumper connectors. Using high quality cables, connect the “PRE OUT 2” connectors to the inputs of the signal processor. Connect the outputs of the signal processor to the “MAIN IN” connectors. Speaker Outputs

See Figure 3The RA‑1570 has two sets of speaker outputs, labeled SPEAKER A and SPEAKER B. The speaker outputs are controlled by the switch on the front panel and the buttons O on the remote control. Speaker Selection If only one set of speakers will be used at any given time, the speakers may have an impedance as low as 4 ohms. If there are times when both the A and B speakers will be used, all the speakers should have an impedance of 8 ohms or more. Speaker impedance ratings are less than precise. In practice, very few loudspeakers will present any problems for the RA‑1570. See your authorized Rotel dealer if you have any questions. Speaker Wire Selection Use insulated two‑conductor stranded wire to connect the RA‑1570 to the speakers. The size and quality of the wire can have an audible effect on the performance of the system. Standard speaker wire will work, but can result in lower output or diminished bass response, particularly over longer distances. In general, heavier wire will improve the sound. For best 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 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 Connections

Turn off all the components in the system before connecting the speakers. The RA‑1570 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‑1570 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 firmly in place. NOTE: Be sure there are no loose wire strands that could touch adjacent wires or connectors. Headphone Output

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 speakers. 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

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

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

See Figure 6The front USB input can be connected to an iPod, iPhone, USB flash memory or the Bluetooth dongle (supplied) for wireless streaming. With iPod or iPhone, 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 Connection Insert the supplied Bluetooth Dongle into the front USB of the RA‑1570 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‑1570. Please use the one supplied.12 RA‑1570 Stereo Integrated Amplifier Audio Controls VOLUME Control

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 B key to completely mute the volume. BALANCE Control

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 button 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 RA‑1570. 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 left or right E arrow keys to adjust. When finished, press the EXIT F button to exit the menu. Tone Control Bypass 9K 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 button to toggle to the Bypass control then press the - or + buttons on the front panel to turn bypass on or off. NOTE: This setting is saved permanently including after powering off the RA‑1570. To temporarily changes the Tone Control Bypass, press the BYPASS K button on the remote control to toggle the Bypass mode enabled and disabled. Bass and Treble Controls 9C Set the Bass or Treble controls from the front panel by pressing the MENU 9 button to toggle to either the Bass or Treble Setting menu. Then press the - or + button 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 RA‑1570. To temporarily change the Bass and Treble settings from the remote control, press the Bass or Treble button C, then press the left or right E arrow keys on the remote to adjust the value.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 are only saved permanently from within the Menu. Adjustments made using the CK buttons are temporary only and not saved after power off. Function Control

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. Dimmer Control Display Dimmer

To change the brightness of the front display, press the MENU button to toggle to the Display Settings. Then press the - or + buttons on the front panel to change the brightness. NOTE: This setting is saved permanently including after powering off the RA‑1570. To temporarily change the display brightness, press the DIM L button on the remote. NOTE: Display Dimmer setting is only saved permanently from within the Menu. Adjustment made using the L button is temporary only and not saved after power off. PC-USB Input q Connect this input using the supplied USB cable to the USB socket of your computer.The RA‑1570 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 192kHz sampling rates you will need to install the Windows driver supplied on CD included with the RA‑1570. You will also need to switch the RA‑1570 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 “‑” key then press “ENTER”.• Power cycle the RA‑1570 and reboot your PC after changing the USB Audio mode to ensure both units are properly configured.Many audio playback applications do not support 192kHz sampling rate. Please confirm your audio player supports 192kHz audio and you have 192kHz audio files to properly playback this sample rate. Also, you may need to configure the audio driver in your PC to output 192kHz 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 RA‑1570.13 Settings Menu You can access the settings menu from the front panel by pressing the MENU

button or the MENU D button on the remote. You can change the value of the selected option by pressing the +/- button on the front panel or left/ RIGHT E arrow keys on the remote. Step through the sub-menus by pressing the MENU

key on the front panel or MENU D button on the remote.

• 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. NOTE: MAC computers do not require a driver to support PC‑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. ROTEL LINK

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

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.14 RA‑1570 Stereo Integrated Amplifier

• OPT2 VOL: VARIABLE (disabled) is factory default.• PC‑USB VOL: VARIABLE (disabled) is factory default.• BLUETOOTH 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: Change 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 24/192 audio playback. If needed the PC‑USB can be configured for USB Audio Class 1.0. Please consult your computer operating system for details.
• SOFTWARE VERSION : This shows the current software version loaded into the amplifier.• 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 RIGHT arrow key on the remote control to select <YES> then press the “ENTER” button on the front panel or “ENT” key 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 RA‑1570, 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 RA‑1570 is plugged into the wall power outlet and the POWER switch is pushed in. If it does not light, 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 light when the RA‑1570 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 RA‑1570 inputs are connected properly. Check the wiring between the RA‑1570 and the speakers. Cannot Connect via Bluetooth If you cannot pair your Bluetooth enabled device to the RA‑1570, delete the memory of the previous connection on the RA‑1570 and on your device. On your device this is often listed as “Forget this Device”. On the RA‑1570 IR remote PRESS and HOLD the STOP M button for 5 seconds until the front display shown “Reset BT DB List?” then release the button. Select <Yes> and press “ENT”. Then try to make the connection again. Playable Audio Format USB Apple (iPhone, iPod, iPad) Format Notes USB Bluetooth Format Notes USB Flash Drive Format Notes MP3 WMA WAV OGG VorbisPC-USB Format Notes Coax/Optical Format Notes SPDIF LPCM 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz 16 Bit, 24 BitAny supported file loadedto Apple device. Phone may resample depending on stored format. May exclude Apps designed to play formats not originally supported by the sending device.Any format supportedby the sending device. May exclude Apps designed to play formats not originally supported by the sending device. 48kHz, 16 Bit (Maximum)Format determined bythe Media Player/Server software thatyou use.Any supported format by the PC software: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz 16 Bit, 24 Bit15 Specifications Continuous Power Output 120 watts/channel (20 ‑ 20k Hz, < 0.03%, 8 ohms) Total Harmonic Distortion (20 Hz‑20k Hz) < 0.03% at rated power, 1/2 power, or 1 watt Intermodulation Distortion (60 Hz : 7k Hz, 4:1) < 0.03% at rated power, 1/2 power or 1 watt Frequency Response: Phono Input 20 Hz ‑ 20k Hz, ± 0.5 dB Line Level Inputs 10 Hz ‑ 100k Hz, + 1, – 3 dB Damping Factor (20 Hz ‑ 20k Hz, 8 ohms) 180 Input Sensitivity / Impedance Phono Input (MM) 2.25 mV / 68k ohms Line Level Inputs (RCA) 285 mV / 100k ohms Line Level Inputs (Balanced) 570 mV / 100k ohms Input Overload Phono Input 30 mV Line Level Inputs 4 V Preamplifier Output / Impedance 1.5 V / 470 ohms Signal to Noise Ratio (IHF “A” weighted) Phono Input 80 dB Line Level Inputs 100 dB Digital Section Frequency Response 10 Hz ‑ 95k Hz (± 3.0dB, Max) Signal to Noise Ratio (IHF ”A” weighted) 100 dB Input Sensitivity/Impedance 0 dBfs / 75 ohms Preout Level/Impedance 1.2 V/ 470 ohms (at ‑20 dB) USB/iPod Digital Signals WAV, MP3, WMA (up to 48k Hz 16 bit) Coaxial/Optical Digital Signals SPDIF LPCM (up to 192k Hz 24 bit) PC-USB USB Audio Class 1 (up to 24/96) USB Audio Class 2 (up to 24/192)* *Driver installation required Power Requirements: USA: 120 volts, 60 Hz EC: 230 volts, 50 Hz Power Consumption 400 watts Standby Power Consumption < 0.5 watts BTU (4 ohms, 1/8th power) 728 BTU/h Dimensions (W x H x D) 431 x 144 x 358 mm (17 x 5

x 14 ins) Front Panel Height 3U (132.6mm, 5

Conector Computer I/O

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