TOA Electronics TA 1400 User Manual

TA 1400

USER MANUAL

1 CONTENTS

1 CONTENTS ........................................................................................................................1

2 APPROVALS ......................................................................................................................2

3 WARNINGS ........................................................................................................................2

3.1 Explanation of graphical symbols ................................................................................2

3.2 WARNING....................................................................................................................2

3.3 CAUTION.....................................................................................................................2

3.4 Important Safety Instructions .......................................................................................2

3.5 User responsibility........................................................................................................3

3.5.1 Speaker damage .................................................................................................. 3

3.5.2 Speaker output hazard .........................................................................................3

3.5.3 Radio interference ................................................................................................ 3

4 INTRODUCTION.................................................................................................................4

4.1 Unpacking .................................................................................................................... 4

4.2 Front Panel .................................................................................................................. 4

4.3 Rear Panel ................................................................................................................... 5

5 REAR PANEL FEATURES .................................................................................................6

5.1 Gain switch .................................................................................................................. 6

5.1.1 The DIP-switch ..................................................................................................... 6

5.1.2 Sensitivity..............................................................................................................6

5.1.3 Options ................................................................................................................. 6

5.2 Link switch ...................................................................................................................7

5.3 Operation modes ......................................................................................................... 7

5.3.1 Stereo mode .........................................................................................................7

5.3.2 Note for bench test ...............................................................................................7

5.3.3 Tandem mode....................................................................................................... 7

5.3.4 Bridge mono mode ...............................................................................................7

5.3.5 Bridge mono mode features .................................................................................8

6 INSTALLATION...................................................................................................................8

6.1 Mounting ......................................................................................................................8

6.2 Cooling.........................................................................................................................8

6.3 Operating voltage.........................................................................................................9

6.4 Denmark: ..................................................................................................................... 9

6.5 Switzerland: ................................................................................................................. 9

6.6 Grounding ....................................................................................................................9

6.7 Power consumption ..................................................................................................... 9

6.7.1 Calculation .......................................................................................................... 10

7 CONNECTIONS................................................................................................................ 10

7.1 Input connections.......................................................................................................10

7.1.1 Balanced inputs ..................................................................................................10

7.1.2 Unbalanced inputs .............................................................................................. 11

7.2 Connecting speakers .................................................................................................12

8 OPERATION ..................................................................................................................... 12

8.1 Operation precautions................................................................................................12

8.2 Powering up – Soft start............................................................................................. 13

8.3 Input attenuators ........................................................................................................ 13

8.4 Indicators ................................................................................................................... 13

9 PROTECTION FEATURES ..............................................................................................13

9.1.1 Clip Limiter..........................................................................................................13

9.1.2 Thermal protection..............................................................................................14

9.1.3 VHF protection....................................................................................................14

9.1.4 Short circuit protection ........................................................................................ 14

9.1.5 AC mains voltage protection...............................................................................14

9.1.6 D.C. protection....................................................................................................14

10 MAINTENANCE ............................................................................................................14

10.1 Troubleshooting .........................................................................................................14

11 WARRANTY .................................................................................................................. 15

Tannoy Limited TA 1400 User Manual 11-06-02

2 APPROVALS

This equipment conforms to the requirements of the EMC directive 89/336/EEC, amended by 92/31/EEC and 93/68/EEC and the requirements of the Low Voltage Directive 73/23/EEC, amended by 93/68/EEC.

Standard Applied EMC Emission EN55103-1, E3

EMC Immunity EN55103-2, E3, with S/N below 1% at normal operation level.

Electrical Safety EN60065, Class

3 WARNINGS

3.1 Explanation of graphical symbols

The lightning symbol within a triangle

is intended to alert the user to the presence of un-insulated “dangerous voltage” within the amplifier’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans.

The exclamation point within a triangle

is intended to alert the user to presence of important operating and service instructions in the literature accompanying the product.

3.2 WARNING

To reduce risk of fire or electric shock, do not expose this apparatus to rain or moisture.

3.3 CAUTION

To reduce the risk of fire or electric shock, do not remove screws. No user-serviceable parts inside. Refer servicing to qualified service personnel.

3.4 Important Safety Instructions

Before using your amplifier, be sure to carefully read the applicable items of these operating instructions and the safety suggestions

1. Keep this manual for future reference.

2. Heed all warnings.

3. Follow all instructions.

4. Do not use this unit near water. Do not spill water or other liquids into or on the unit. Do not operate the amplifier while wet or standing in liquid.

5. Clean only with dry cloth.

6. Do not block the air intake or exhaust ports. Install the unit in accordance with the

instructions.

7. Do not operate the amplifier near heat producing devices such as radiators, heat registers, stoves or other apparatus that produce heat.

8. Always operate the unit with the chassis ground wire connected to the electrical safety earth. Do not defeat the safety purpose of a grounding-type plug. A grounding type plug has two pins and a third grounding prong. The third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

9. Connect only to AC power outlets rated 230-240V (or 100-120V), 50-60Hz

Tannoy Limited TA 1400 User Manual 11-06-02

10. Do not use this amplifier if the power cord is broken or frayed. Protect the power cord from being walked upon or pinched particularly at the plugs and the point where it exits from the apparatus.

11. Only use accessories specified by the manufacturer.

12. The unit is intended to use in a 19” rack. Follow the mounting instructions. When a rack on

wheels is used, use caution when moving the loaded rack to avoid injury from tipping over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Do not connect an amplifier output in parallel or series with any other amplifier’s output. Do not connect the amplifier output to any other voltage source, such as battery, mains source, or power supply, regardless of whether the amplifier is turned on or off.

15. Do not run the output of any amplifier back into another channel's input.

16. 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 into the unit

• An object has fallen into the unit

• The unit has been exposed to rain or moisture

• The unit does not operate normally

• The unit was dropped or the enclosure is damaged

17. Do not remove top or bottom covers. Removal of the cover will expose hazardous voltages. There are no serviceable parts inside and removal may void the warranty.

18. An experienced user shall always supervise this professional audio equipment, especially if inexperienced adults or minors are using the equipment.

3.5 User responsibility

3.5.1 Speaker damage

Your amplifier is very powerful and can be potentially dangerous to both loudspeakers and

humans alike. Many loudspeakers can be easily damaged or destroyed by overpowering,

especially with the high power available from a bridged amplifier. Always check the

speaker’s continuous and peak power capabilities. Even if using the amplifier’s front panel attenuator reduces the gain, it is still possible to reach full output power, if the input signal level is high enough.

3.5.2 Speaker output hazard

Power amplifiers are capable of producing hazardous output voltages. To avoid electrical

shock, do not touch any exposed speaker wiring, while the amplifier is operating. See page

6 about outputs for proper connection of speakers.

3.5.3 Radio interference

A sample of this product has been tested and complies with the limits for the European Electro Magnetic Compatibility (EMC) directive. This equipment has also been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference from electrical equipment. This product uses radio frequency energy and if not used or installed in accordance with these operating instructions, may cause interference to other equipment, such as radio receivers. However, there is no guarantee that interference will not occur in a particular installation.

Tannoy Limited TA 1400 User Manual 11-06-02

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment on and off, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

• Check if the affected unit complies with the EMC limits for immunity, (CE-labelled). If

not, address the problem with the manufacturer or supplier. All electrical products sold in the EC must be approved for immunity against electromagnetic fields, high voltage flashes, and radio interference.

• Consult the dealer or an experienced radio/TV technician for help.

4 INTRODUCTION

Thank you for purchasing a TANNOY power amplifier. This manual contains important information on operating your amplifier correctly and safely. Please take some time and read this manual to familiarize you with the advanced features of this amplifier.

4.1 Unpacking

Carefully open the shipping carton and check for any noticeable damage. Every Tannoy amplifier is tested and inspected before leaving the factory and should arrive in perfect condition. If found to be damaged, notify the shipping company immediately. Only the consignee may institute a claim with the carrier for damage incurred during shipping. Be sure to save the carton and packing materials for the carrier's inspection. It is also advisable to save the carton and packing material, even if the amplifier is undamaged. Should you ever need to ship the amplifier, always use the original packing.

4.2 Front Panel

Figure 1 front panel

1. Input level attenuators These controls are used to alter the signal level entering the amplifier. They are calibrated in dB to assist the setup of active loudspeaker systems or cut down unwanted noise from the input signal. (See page 13

2. Protect indicator

This indicator illuminates if the amplifier tries to operate above its maximum operating temperature

C). The indicator first comes on as a warning to either turn down the input level or check the

(90° cooling arrangements. Beyond the maximum temperature the amplifier will mute the input signal. Once the cooling fans have brought the output heat sinks back to normal operating temperature the input signal is un-muted. This indicator also illuminates when signals above 12 kHz are continuously present at full power at the output terminals or if short circuit protection is activated. If this occurs the input signal is muted, and the process cycles until the VHF signal is no longer present or the short is removed. (See page

Tannoy Limited TA 1400 User Manual 11-06-02

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