Teac AI-501DA - Amplifier Manual

Included items

Check to be sure the box contains all the included items shown below.
Please contact the store where you purchased this unit if any of these items are missing or have been damaged during transportation.
Power cord × 1
Remote control unit (RC-1305) × 1
Batteries for remote control unit (AAA) × 2
Owner's manual (this document) × 1

• Keep this manual in a safe place for future reference.

Warranty card × 1

Before use

Placement precautions

• Do not put anything on top of the unit.
• Avoid placing the unit in direct sunlight or close to any source of heat, such as a radiator, heater, open fireplace or amplifier. Also avoid locations that are subject to vibrations or exposed to excessive dust, cold or moisture.
• Place the unit in a stable location near the audio system that you will use with it.
• As the unit could become warm during operation, always leave sufficient space around it for ventilation. When installing this unit, leave a little space (at least 3 cm or 1.2") between it and walls and other devices in order to allow good heat dissipation. When placing it in a rack, for example, leave at least 5 cm (2") open above it and 10 cm (4") open behind it. Failure to provide these gaps could cause heat to build up inside and result in fire.
• You may stack this unit with a PD-501HR or other 501 series units. However, if heat should cause the protection circuit to be activated and sound output stops suddenly, place this unit on top and with sufficient distance between it and walls and other devices in order to improve heat dissipation.
• Do not move the unit during use.
• The voltage supplied to the unit should match the voltage printed on the rear panel. If you are in any doubt regarding this matter, consult an electrician.
• Do not open the body of the unit as this might result in damage to the circuitry or cause electric shock. If a foreign object should get into the unit, contact your dealer or TEAC customer service.
• When removing the power plug from the wall outlet, always pull directly on the plug; never yank on the cord.
• Depending on the electromagnetic waves of television broadcasts, interference might appear on television screens when this unit's power is on. This does not mean that this unit or the TV is malfunctioning. If this occurs, turn this unit's power off.

Maintenance

If the surface of the unit becomes dirty, wipe it with a soft dry cloth. If the unit becomes very dirty, dampen a soft cloth slightly with a diluted neutral cleanser and thoroughly wring out any excess fluid before using the cloth to wipe the unit.

For your safety, disconnect the power cord from the socket before cleaning.

• Never spray liquid directly on the unit.
• Do not use thinner or alcohol as they could damage the surface of the unit.
• Avoid allowing rubber or plastic materials to touch this product for long periods of time, because they could damage the cabinet.

Connecting speakers

Precautions when connecting speakers

• Connect the power plugs after all connections have been made.
• Carefully read the operation manuals of the devices that you are connecting and follow their instructions.

• This unit works with speakers that have nominal impedances between 4 Ω and 8 Ω. Use of speakers with impedances of less than 4 Ω, in particular, could cause the protection circuit to activate and sound output to stop. In some cases, damage could even occur to this unit and the speakers.
• This unit's red terminal is positive ( ) and its black terminal is negative ( ).
• If the exposed end of a core wire in a speaker cable contacts another cable or terminal, a short could occur. o Never allow a speaker cable to short.
• To avoid noise, do not bundle the speaker cables with the power cord or other cables.

Connecting speaker cables

1. Remove about 1 cm (0.4") of the sheath at the end of the speaker cable and twist the cable core well.
2. Turn the terminal cap left (counterclockwise) to loosen it.
3. Insert the wire into the hole in the terminal screw and turn the terminal cap right (clockwise) to connect it securely.
   • Do not allow the cable sheath to touch the terminal.
4. Make sure it is connected securely by gently pulling on the cable.

Connecting speakers using banana plugs

You can also connect speakers using commercially available banana plugs. Connect the speaker cable to the banana plug first, and then insert the plug into the terminal.

• Loosen the terminal cap before using the banana plug.
• Carefully read the instructions of the banana plugs that you intend to use with this unit.

For European customers
In accordance with European safety regulations, it is not possible to connect banana plugs to the speaker terminals on European models. The holes into which banana plugs are inserted have been covered with black caps. Connect the speakers using spades or bare wires. If the black caps become separated from the terminals, return them to their original position.

Connecting equipment

1. Analog audio input connectors (LINE 1), (LINE 2)
   Use these to input stereo analog audio.
   Connect cassette decks, CD players and other analog audio output devices to these RCA jacks.
   Use a commercially available RCA audio cable to connect these devices.
   Connect this unit's R jack with the R jack of the audio output device. Likewise, connect its L jack to the other in device's L jack.
   
2. Digital audio input connectors (COAXIAL), (OPTICAL 1), (OPTICAL 2)
   Use these to input digital audio. Connect the digital audio outputs of other devices to these connectors.
   COAXIAL: RCA Coaxial digital cable
   OPTICAL: Optical digital cable (TOS)
3. USB input port (USB)
   Use this to input digital audio from a computer. Connect it to the computer's USB port, using a commercially available USB (TYPE B) cable.

Install the dedicated driver on the computer before connecting. If you connect this unit to a computer that does not have the driver installed, the operation of the computer could be impaired, including, for example, causing it to operate more slowly (see "Installing the driver on the computer").

4. AUTO POWER SAVE switch
   Use to turn the automatic power saving function ON and OFF.
   When ON, the unit will automatically enter standby mode if there is no audio input for 30 minutes or more.
   • When in standby mode, turn this unit's INPUT SELECTOR or press a button on the remote control to turn the power ON.
5. Power inlet (~IN)
   Insert the included power cord here. After completing all other connections, insert the power plug into a power outlet.
   Unplug the cord from the outlet when not using the unit for a long time.

Use only the included power cord. Use of a different cord could cause fire or electric shock.

Do not turn the power on until after making all connections.

• Carefully read the manuals of the devices that you are connecting and follow their instructions when making connections.
• Do not bundle connecting cables with power cords. Doing so could cause noise.
• Connect all plugs completely.

Using the remote control

Precautions for use

Misuse of batteries could cause them to rupture or leak leading to fire, injury or the staining of items nearby. Please carefully read and observe the precautions concerning batteries.

• Point the remote control unit at the main unit's remote sensor from within 5 meters (16 feet) of it. Make sure that there are no obstructions between the remote control and the main unit.
• If direct sunlight or strong artificial illumination shines on the remote sensor, the remote control might not function. If that is the case, move this unit to another location.
• If the remote control unit is operated near other devices that generate infrared rays, or if other remote control devices using infrared rays are used near the unit, it might operate incorrectly. The other devices might also operate incorrectly.

Battery installation

Remove the cover from the back of the remote control and insert two AAA batteries with their ends oriented in the case as shown. Replace the cover.

Battery replacement

If the operation range of the remote control decreases, the batteries have become exhausted. In this case, replace the batteries with new ones.
For detailed information about the collection of batteries, please contact your local municipality, your waste disposal service or the point of sale where you purchased the items.

Names and functions of parts

Main unit

1. POWER switch
   Use to turn the power ON and OFF.
2. PHONES jack
   Connect headphones with a standard 6.3 mm (1/4") stereo plug here.
3. INPUT SELECTOR knob
   Use to select the input source. The indicator for the selected input source lights.
4. Remote control signal receiver
   Signals from the remote control are received here. When using the remote control, point it toward this area.
5. Level meters
   These show the output levels.
6. VOLUME knob
   Use to adjust the volume. Turn it clockwise (right) to increase it and counterclockwise (left) to decrease it.

The maximum volume is 0, and the minimum volume is −∞ (minus infinity). Before turning the power ON, set the VOLUME knob to −∞. Failure to do so could result in sudden loud noises that could damage speakers and harm your hearing.

Remote control

1. Input selection buttons
   Use these to select the input source.
2. METER Illumination adjustment button
   Press this to cycle through the level meter illumination settings, which are bright, medium, dim and off in that order.
3. MUTE button
   Press this to temporarily silence sound output. Press it again to restore sound output at the previous level.
4. VOLUME (+, −) buttons
   Use to adjust the volume.

• The RC-1305 remote control supplied with the AD-501DA can control both AI-501DA and PD-501HR units. This manual explains how to use it with the AI-501DA.
• When both the main unit and the remote control have buttons with the same functions, this manual explains how to use either of them. The corresponding buttons can be used in the same manner.

Basic operation

1. Minimize the volume.
   Use the VOLUME knob or the remote control VOLUME buttons to minimize the volume.
   −∞ dB: Minimum volume
   0 dB: Maximum volume
   
2. Set the POWER switch to ON.
   
3. Turn the INPUT SELECTOR knob to select the input source.
   The indicator for the selected source lights.
   
   • If digital audio signals input through OPT1, OPT2 or COAX inputs are in a format other than PCM (e.g. Dolby Digital, DTS, AAC), the input indicator will blink. Since this unit only supports the input of PCM format signals, confirm that the digital output of the connected equipment is in PCM format. Some devices convert signals into PCM format before output. See the operation manuals for the connected devices.
   • Before connecting a computer and selecting USB, install the dedicated driver on the computer (see "Installing the driver on the computer"). Playback from a computer that does not have this driver installed is not possible.
4. Operate the playback device.
   Refer to the operation manual of that device.
5. Adjust the volume.
   Start playback on the source and use the VOLUME knob or remote control VOLUME buttons to adjust the volume to its optimal level.
   −∞ dB: Minimum volume
   0 dB: Maximum volume
   

Playing back music on a computer

Installing the driver on the computer

In order for this unit to play back audio files stored on a computer, you must first install a driver on the computer. Please download this driver from the following web address.

Driver software download page
http://www.teac.co.jp/audio/software_teac_e.html

USB connection is supported on computers running Windows XP (32-bit), Windows Vista (32/64-bit), Windows 7 (32/64-bit), Mac OS X 10.6 (Snow Leopard) (Mac OS X 10.6.4 or later), Mac OS X 10.7 (Lion) and Mac OS X 10.8 (Mountain Lion). (As of October, 2012)
Compatibility with other operating systems is not guaranteed.

Install the driver before connecting the unit with the computer by USB.
If you connect this unit with a computer before installing the driver, it will not work properly. Moreover, if the computer is running Windows XP, its operation could become noticeably slower, requiring it to be restarted.

• For instructions about driver installation procedures, please see our download page.
• Depending on the combination of hardware and software, proper operation might not be possible even with the above operating systems.

This unit connects using high-speed asynchronous mode. Transmittable sampling frequencies are 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz and 192 kHz.

When properly connected, you will be able to select "TEAC USB HS ASYNC AUDIO" as an audio output from the computer OS.

• In asynchronous mode, the audio data sent from the computer is processed using this unit's clock, allowing data transmission jitter to the reduced.

Playing back audio files on a computer

1. Connect the computer to the unit using a USB cable.
   
   • Use a cable with a connector that fits the USB port on this unit.
2. Turn the computer's power ON.
   Confirm that the operating system has started up properly.
3. Turn the unit's POWER switch ON.
   
4. Turn the INPUT SELECTOR to select USB.
   
5. Start playback of a music file on the computer.
   Maximize the volume on the computer and use this unit's VOLUME knob to adjust the output level for better sound quality.
   Minimize the volume on this unit before starting playback and gradually raise the level.

• You cannot control this unit from the computer, and you cannot control the computer from this unit.
• Do not do any of the following when playing back an audio file while connected by USB. Doing so could cause the computer to function incorrectly. Always quit the music playback software that you are using before you do any of the following.
  • Disconnect the USB cable
  • Turn this unit's power OFF
  • Change this unit's input source
• If you connect this unit with the computer or change its input to USB after starting the music playback software, audio files might not play back correctly. If this occurs, restart the audio playback software or restart the computer.

Troubleshooting

If you experience a problem with this unit, please check the following items before requesting service. If it still does not operate correctly, contact the retailer where you purchased the unit or TEAC customer support (see the back cover for contact information).

General

The power will not turn on

• Check that the power cord is completely plugged into the power outlet. If the outlet is switched, confirm that the switch is in the ON position.
• Connect a different electrical device to the outlet to confirm that it is supplying power.

No sound is output

• Adjust the VOLUME knob. Turn it clockwise (right) to increase the volume.
• Use the INPUT SELECTOR knob to select the input that is connected to the source that you want to hear (See "Basic operation").
• Reconfirm connections with other equipment.

Remote control does not work

• If the batteries are exhausted, replace both of them with new ones.
• The remote control will not work if there is an obstruction between it and the main unit. Point the remote control toward the main unit and use it within 5 m of the front panel.

There is a humming noise

• If a connecting cable is near a power cord, fluorescent light or similar cause of interference, increase the distance between them as much as possible.

There is no sound from one side of the headphones

• Confirm that the headphones plug is inserted completely.

Sound output suddenly stopped

• Heat might have caused the protection circuit to activate. Set the POWER switch to OFF once, and wait several minutes before restarting the unit.

The level meter lights are blinking and no sound is output

• The + and − speaker cables might have shorted. Turn the power OFF and check the speaker connections.

Automatic power saving caused the unit to enter standby

• Shift the POWER switch to OFF once and then turn the power back ON.

Connections with a computer

The computer does not recognize this unit

• USB connection is only possible with computers running the following operating systems.
  Microsoft Windows
  Windows XP (32-bit), Windows Vista (32/64-bit), Windows 7 (32/64-bit)
  Apple Macintosh
  Mac OS X 10.6 (Snow Leopard)
  (Mac OS X 10.6.4 or later)
  Mac OS X 10.7 (Lion)
  Mac OS X 10.8 (Mountain Lion)
  (As of October, 2012)
  Operation with other operating systems is not guaranteed.
• You must install the dedicated driver on the computer (See "Installing the driver on the computer").

There is noise

• If other applications are run while a music file is being played back, the sound could break up and noise might be heard. Avoid running other applications during playback.
• If you connect this unit with the computer via a USB hub, noise might occur. If this happens, connect this unit directly to the computer.

Music files cannot be played back

• Launch the music playback software and start playback after connecting this unit and the computer and setting the input to USB.
  If you connect this unit and the computer, or switch the input to USB after launching the music playback software, the audio data might not play back properly.
• You must install the dedicated driver on the computer (See "Installing the driver on the computer").

Since a microcomputer is used in this unit, it might not operate correctly sometimes due to noise and other interference from outside the unit. If this should occur, remove the AC cord from the power socket and wait a while before repowering the unit again.

Specifications

IMPORTANT SAFETY PRECAUTIONS

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

• DO NOT REMOVE THE EXTERNAL CASES OR CABINETS TO EXPOSE THE ELECTRONICS. NO USER SERVICEABLE PARTS ARE INSIDE.
• IF YOU ARE EXPERIENCING PROBLEMS WITH THIS PRODUCT, CONTACT TEAC FOR A SERVICE REFERRAL. DO NOT USE THE PRODUCT UNTIL IT HAS BEEN REPAIRED.
• USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

IN NORTH AMERICA USE ONLY ON 120 V SUPPLY.

Precautions concerning batteries
Misuse of batteries could cause them to rupture or leak leading to fire, injury or the staining of nearby things. Please read and observe the following precautions carefully.

• Be sure to insert the batteries with correct positive ( ) and negative ( ) orientations.
• Use batteries of the same type. Never use different types of batteries together.
• If the remote control is not used for a long time (more than a month), remove the batteries to prevent them from leaking.
• If the batteries leak, wipe away the leakage inside the battery compartment and replace the batteries with new ones.
• Do not use batteries of types other than those specified. Do not mix new batteries with old ones or use different types of batteries together.
• Do not heat or disassemble batteries. Never throw batteries into fire or water.
• Do not carry or store batteries with other metallic objects. The batteries could short circuit, leak or explode.
• Never recharge a battery unless it is confirmed to be a rechargeable type.

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or groundingtype 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.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. 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.
    
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. 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 draws nominal non-operating power from the AC outlet with its POWER or STANDBY/ON switch not in the ON position.
• The mains plug is used as the disconnect device, the disconnect device shall remain readily operable.
• Caution should be taken when using earphones or headphones with the product because excessive sound pressure (volume) from earphones or headphones can cause hearing loss.

• Do not expose this apparatus to drips or splashes.
• Do not place any objects filled with liquids, such as vases, on the apparatus.
• Do not install this apparatus in a confined space such as a book case or similar unit.
• The apparatus should be located close enough to the AC outlet so that you can easily reach the power cord plug at any time.
• If the product uses batteries (including a battery pack or installed batteries), they should not be exposed to sunshine, fire or excessive heat.
• 
  CAUTION for products that use replaceable lithium batteries: there is danger of explosion if a battery is replaced with an incorrect type of battery. Replace only with the same or equivalent type.

Products with Class construction are equipped with a power supply cord that has a grounding plug. The cord of such a product must be plugged into an AC outlet that has a protective grounding connection.

Documents / Resources

References

• TEAC - プレミアムオーディオ

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download Teac AI-501DA - Amplifier Manual