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Related Manuals for BRUEL & KJAER 2716
Summary of Contents for BRUEL & KJAER 2716
- Page 1 Technical Documentation Power Amplifiers Types 2716 and 2716-C User Manual English BE 1692 – 12...
- Page 2 Power Amplifiers Types 2716 and 2716-C User Manual January 2007 BE 1692−12...
- Page 3 Safety Considerations This apparatus has been designed and tested in accordance with IEC 60065 and EN 60065 Audio, video and similar electronic apparatus – Safety requirements. This manual con- tains information and warnings which must be followed to ensure safe operation and to retain the apparatus in safe condition.
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Page 4: Table Of Contents
Contents CHAPTER 1 Safety Instructions and User Responsibility ........... 1 Important Safety Instructions ................1 User Responsibility ....................2 What to Expect..................... 2 CHAPTER 2 Rear Panel Features ................... 5 Link Switch......................5 Operation Modes ....................5 CHAPTER 3 Installation......................9 Mounting ...................... - Page 5 CHAPTER 7 Maintenance...................... 21 Troubleshooting ....................21 CHAPTER 8 Service and Repair ................... 23 CHAPTER 9 Specifications ....................25...
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Page 6: Safety Instructions And User Responsibility
Chapter 1 Safety Instructions and User Responsibility Important Safety Instructions Before using your amplifier, carefully read the items of these operating instructions applicable to you, and the safety suggestions: 1) Keep this manual for future reference. 2) Heed all warnings. 3) Follow all instructions. -
Page 7: User Responsibility
Power Amplifiers Types 2716 and 2716-C – User Manual 13) Unplug the apparatus during lightning storms or when not in use for long time periods. 14) Do not connect an amplifier output in parallel or series with any other amplifier’s output. - Page 8 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. 1.3.2 Front Panel Fig.1.1 Front panel of Type 2716 Gain Gain -10 -7 -10 -7...
- Page 9 Power Amplifiers Types 2716 and 2716-C – User Manual either turn down the input level or check the cooling arrangements. Above the maxi- mum temperature, the amplifier mutes the input signal. Once the air-cooling lowers the output heat and normal operating temperature is regained, the input signal is un-muted.
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Page 10: Chapter 2 Rear Panel Features
Operation Modes 2.2.1 Stereo Mode Fig.2.1 LINK / BRIDGE A+B Types 2716 and 2716-C rear link STEREO 030035 In this mode, both channels operate independently of each other. This is used for all 2- channel modes, such as stereo and bi-amping. Set the two switches to the ‘off’ position for stereo mode. - Page 11 Power Amplifiers Types 2716 and 2716-C – User Manual Note for Bench Test NOTE: Channel B is always polarity reversed on the input, but polarity compensated by feeding the minus pin on the Channel B output with the output voltage. Channel A output is connected in normal polarity mode.
- Page 12 4 ohms part. The power into 4 ohms from Type 2716 or 2716-C is 160 W. So, the total bridged power into the 8 ohm load is: 2 ×160 = 320 W.
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Page 14: Chapter 3 Installation
Chapter 3 Installation Mounting The amplifier is one rack unit high (1U) and will mount in a standard EIA 19″ rack. Amplifiers may be stacked directly on top of each other; there is no need for spacing between units. If it is the intention to fill a rack with amplifiers, we recommend racking be started from the bottom of the rack. -
Page 15: Grounding
Power Amplifiers Types 2716 and 2716-C – User Manual Grounding The amplifier’s signal ground and chassis ground (protective earth) are not directly connected to each other in order to prevent ground-loop interference. However, internal components ensure that the potential difference between chassis and signal ground does not exceed approximately 0.6 V. -
Page 16: Chapter 4 Connections
Chapter 4 Connections Input connections 4.1.1 Balanced Inputs XLR Input connectors are active balanced and wired according to the IEC 268, i.e., pin 2 hot, and wired in the following way: • Pin 1 – ground/shield • Pin 2 – hot (+) •... - Page 17 Power Amplifiers Types 2716 and 2716-C – User Manual Fig.4.2 XLR balanced Fig.4.3 ¼ ″ TRS plug 030041 ® Within the Neutrik Combojack, there is a ¼″ (6.3 mm) phone jack which is wired in parallel with the XLR: •...
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Page 18: Connecting Speakers
CHAPTER 4 Connections 4.1.2 Unbalanced Inputs To connect an unbalanced source, tie pin 3 (ring on TRS jack) down to the shield of the connector. If you leave one pin disconnected, you will lose 6 dB. A better method for using unbalanced sources is shown in Fig.4.5. This is similar to the connection for balanced lines, but pin 3 is connected to the shield at the source. - Page 19 Power Amplifiers Types 2716 and 2716-C – User Manual ® Fig.4.6 Channel A and B into two separate Speakon units OUTPUT CH. B OUTPUT CH. A STEREO BRIDGE 1+ CH. B+ 1+ CH. A+ Pin 1+ Spk+ 1- CH. B- 1- CH.
- Page 20 CHAPTER 4 Connections Fig.4.8 Bridged mono OUTPUT CH. A STEREO BRIDGE 1+ CH. A+ Pin 1+ Spk+ 1- CH. A- 2- Spk- 2+ CH. B+ 2- CH. B- Ser. N:o 030037 • Never connect either output terminal to ground or to some other output or input terminal (see warnings in the “1”).
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Page 22: Chapter 5 Operation
Chapter 5 Operation Operation Precautions • To prevent electric shock hazard, ensure that the power switch is set to ‘Off’ before con- necting any input or output, or operating the switches on the rear panel, and that the con- ductive parts of the speaker wires are not exposed. See Chapter 3 for installation information •... -
Page 23: Indicators
Power Amplifiers Types 2716 and 2716-C – User Manual Indicators Fig.5.1 Gain Gain Front indicators -10 -7 -10 -7 Prot Clip CH.A CH.B 030043 The two bottom, green ‘On’ LEDs indicate that the output circuits are receiving the correct rail voltage. The ‘–25 dB’ LEDs illuminate if the output signal is greater than –25 dB (with 0 dB as reference to full output power). -
Page 24: Protection Features
Chapter 6 Protection Features Each Brüel & Kjær amplifier has many advanced protection features, protecting both the amplifier and the speakers connected to it should a fault condition arise. Under normal use, these features are inaudible. All protection circuits are independent. Clip Limiter The clip limiter is included to prevent dangerous, clipped signals reaching the speaker and damaging it. -
Page 25: Thermal Protection
Power Amplifiers Types 2716 and 2716-C – User Manual Thermal Protection If the amplifier is driven very hard into a low-impedance load, the temperature will rise. If these causal conditions continue, the Protection indicator(s) will illuminate, indicating that the amplifier is about to go into thermal shutdown. -
Page 26: Chapter 7 Maintenance
Chapter 7 Maintenance Under normal use, the amplifier should provide years of trouble-free service. In some extreme cases, however, it may be necessary for authorised service personnel to clean the inside of the amplifier. These conditions usually occur after prolonged use, e.g., in environments using ‘cracked-oil’... - Page 27 Power Amplifiers Types 2716 and 2716-C – User Manual...
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Page 28: Chapter 8 Service And Repair
Chapter 8 Service and Repair Power Amplifier Type 2716/2716-C should provide you with many years of trouble-free, reliable operation. If a fault occurs, however, proceed as follows: immediately disconnect the system at its power source (or sources) and secure it against unintended operation. - Page 29 Power Amplifiers Types 2716 and 2716-C – User Manual...
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Page 30: Chapter 9 Specifications
Output Connectors (× 2): Neutrik 4-pole Speakon INPUTS connectors Gain: 30 dB ± 1 dB Gain Selectable (2716-C): 0 – 30 dB in 6 dB steps SWITCHES ± 0.3 dB Clip Limiter: On – Off (switchable) Attenuator (2716): 0 to –80 dB stepless Link Switch: Stereo –... - Page 31 Power Amplifiers Types 2716 and 2716-C – User Manual Power Voltage Selector 230 V ~ 115 V ~ Supply Voltage Range 130 V – 265 V AC 65 V – 135 V AC Minimum Start Voltage 70 V 35 V AC...
- Page 32 HEADQUARTERS: DK-2850 Nærum · Denmark · Telephone: +45 4580 0500 · Fax: +45 4580 1405 · www.bksv.com · info@bksv.com Australia (+61) 2 9889-8888 · Austria (+43) 1 865 74 00 · Brazil (+55)11 5188-8161 · Canada (+1) 514 695-8225 China (+86) 10 680 29906 · Czech Republic (+420) 2 6702 1100 · Finland (+358) 9-521 300 · France (+33) 1 69 90 71 00 Germany (+49) 421 17 87 0 ·...
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