DJ SERIES

PROFESSIONAL AMPLIFIER USERS MANUAL manual de usuario

Overview

DJ series are our high-class amplifiers which meet the requirements from the highend field. An Unique diagram and the SMT technology makes this amplifiers have a superior sound quality and an incredible reliability. The High stability makes the QP-AUDIO Amplifiers the perfect solution for a large variety of uses whatever in installation and/or DJ use. QP-AUDIO is the best choice for your high-end field system. DJ series amplifiers have full-protection function including: •Stereo - 8/4 ohms •High quality transformer, assuring full-frequency output . •Built-in protecting circuit, prolonging the working life. •Special cooling system, improving cooling efficiency being suitable for long-time full-power and full-loaded use.

Important Safety Installation WARNING - Using electrics products, basic precautions should always be followed including the following: 1)Read all the Important Safety Instructions before using the product. 2)To reduce the risk of injury, a close supervision is necessary when the product is used near children. 3)Do not use this product near water. 4)This product is capable of producing sound levels that could cause permanent hearing loss. Do not operate for a long period of time at high volume or at a level that is uncomfortable. If you experience any hearing loss or ringing in the ears, you should consult an audiologist. 5)This product should be located so that its location or position does not interfere with its proper ventilation. 6)This product should be located away from heat sources such as radiators, heat registers or other products that produce heat.

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7)This product should be connected to a power supply only of the type described on the operating instructions or as marked on the product. Always ensure that a good quality mains lead is used applicably. 8)If the mains fuse need be replaced, DISCONNECT THE PRODUCT FROM THE MAINS SUPPLY. The fuse is above the mains IEC socket, and must be replaced with a fuse of the type and rating stated on the rear panel. If a replacement fuse fails immediately, contact your local service agent. Do not replace with a higher value. 9)The power supply cord should be unplugged from the outlet if the amplifier is going to be not working for a long period of time. 10)Please be Ensure that the mains isolation switch is readily accessible when the product is in use. 11) Please take care that liquids are not spilled into the enclosure. 12)The product should be serviced by qualified service personal in any of the following cases : A. The power-supply cord or the plug has been damaged. B. Objects have fallen or liquid has been spilled into the product. C. The product has been exposed to rain or moisture. D. The product does not appear to operate normally or exhibits a marked change in performance. E. The product has been dropped or the enclosure was damaged. 13) DO NOT attempt to service the product beyond what is described into the user maintenance instructions. All other servicing should be referred to qualified service personal. 14) Warning - DO NOT place objects over the product’s power cord or place it in a position where anyone could trip over, walk on or roll over it. DO NOT allow the product to rest on or to be installed over power cords of any type. Improper installations of this type create the possibility of fire hazard and personal injury.

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FRONT PANEL

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1. Power ON/OFF Switch Please turn on the amplifier with this button, after 3-4 seconds, you will hear a “double click”. The soft start is complete, then after 1-2 seconds, the “double click” will be heard once again. After the amplifier is connected to the speaker, this equipment will be on standby. 2. CH B Input level adjustable knob: You can use this knob to adjust the volume according your need. 3.6 CH B/CH A protect LED (yellow) It will light up in 3 kinds of status. 1) At 4-6 seconds after power-on, the amplifier will boot to standby status and it still haven’t connect the speakers to avoid high current shock to the speaker. 2) Overheating - Over 85℃. 3) The amplifier work abnormally. 4. CH A input level adjust knob The adjustment is same to CH B, only use this knob when the amplifier is in bridge model. 5.8. CH B/ CH A Clip LED. It will light up at 2 kinds of status. 1) When output level is at max, the LED light will stay on; in this situation, you must reduce the input level. 2) The speaker does not play sound when inputting one signal, and the LED is ON continuously, it should be produced by short circuit, you must power off your equipment , check it carefully and restart it. 7. Power LED (blue): When you push the power button and connect to the power supply, the LED light up. 9. 10. CH A/ CH B signal LED (green) 11.12. Bridge LED (blue)

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2 REAR PANEL

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DJ-150.2 DJ-350.2 DJ-450.2 1. Power cord Main Conector and fuse When a problem occurs on this appliance, the fuse is cut off to prevent problems, to replace; please use standard fuse as specified. 2. CH A and CH B Speakon® output socket 3. CH A and CH B binding output connector 4. MONO binding output connector 5. Ground lift switch Switch ground lift; you can break the ground loop between the amplifier and the chassis ground of various components. The resistor is 100K ohms. 6.7. CH A and CH B jack input connector Using by 1/4 standard unbalanced connector, you can use unbalance and balance Tip=Signal + ring = signal – sleeve =ground 8. Limiter switch ON/OFF 9. Mode switch MONO/STEREO 10. MONO Speakon® output socket

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REAR PANEL DJ-650.2 CIRC UIT BR EA KE R 12 A

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1.LIMITER Switch 2.XLR Balanced Input Connectors 3. Signal Ground Lift Switch. If a very high level signal is driven to the amplifier, the output signal will “CLIP” and the peaks of the waveform will be flattened. The Clip Limiter circuit automatically reduces the gain to prevent the overdrive. You can switch ON and OFF the Clip Limiter circuit via the (11) switch on the rear panel of your DJ Series Amplfier. If you use full range speakers, the Clip Limiter circuit will reduce the high frequency distortion and it will also protect the high frequency drivers. However, some Users prefer to switch the Limiter OFF to get more punch from Kick Drums and other sounds in the low frequencies area. Each Channel features balanced XLR and 1/4” jack sockets wired in parallel. The Balanced signals are less sensitive to hum noise generated by the AC. The ground lift switch (factory-set to the ground [bottom] position) electrically connects signal ground to the chassis/AC ground. The top position lifts the amplifier s signal ground. In a properly designed system (for safety purposes and to minimize noise), amplifiers should be connected to ground through the AC line cord. Also, whenever possible, the signal source equipment should share the same ground AC than the amplifier. In some cases this may not be possible, and a ground loop results. If this happens, the first step is to switch the ground lift switch to the top ( lift ) position. In this position, the signal ground is lifted and is completely isolated from the chassis/AC ground. Do not change the switch to the lift position if the amplifier and the signal source equipment are on the same AC ground. If the ground loop problem persist after Switching the ground lift switch, then the shield on balanced input lines should be grounded at one end only (usually the signal source). 4. Output Mode Selector Switch The stereo power amplifier presents three operating modes: - Stereo Mode: In this mode, channel A and channel B operate independently (as a normal stereo amplifier). The channel A input signal will be output from the channel A output connector, and channel B input signal will be output from the channel B output connector. - Parallel Mono Mode: In this mode, channel A input signal will be output from the output connectors of both channels. - Bridged Mode: In this mode, channel A input signal will be output from the bridge-mono output Connector. 5.SENSITIVITY Selector Switch. Allows selection of 0.775V, 1.0V or 1.40V sensitivity. 6.Cooling Fan. This fan secures enough cooling for your DJ series amplifier. The airflow is front-to rear. The fan speed is electronically regulated depending of the power devices temperature. 7.Power Connection. The power amplifier must be connected only with the attached three-wire safety power cord with protective conductor (nonfused earthed conductor). This amplifier is made for use with the mains voltage labelled on the back of the amplifier only. Check the label on the back panel of the amplifier for the appropriate voltage. Make sure the voltage of your mains outlet is correct. The power voltage is factory set as labelled on the back panel and cannot be change afterwards. Damage caused by connecting the amplifier to Improper AC voltage voids the warranty. 8.SPEAKON® And BINDING POST Outputs SPEAKON® connectors are specifically designed to connect high power speakers. The correct polarity is secured automatically, it prevent shock hazard and it lock-in securely. Please make sure to respect the speaker polarity when using binding post. Caution: Turn off the unit before connecting an audio signal to the binding post to avoid any electric shock!. 9.Circuit Breaker. The circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.

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SPECIFICATIONS DJ-300. 2

DJ-150. 2

DJ-650. 2 400wrms+400wrms

200wrms+200wrms

300wrms+300wrms

150wrms+150wrms

300wrms+300wrms

450wrms+450wrm s 650wrms+650wrm s

300w

600w

900w

1300w

0.77 v

INPU T SENSITIVITY >95dB

1KHz at 8

DJ-450.2

100wrms+100wrms

>100dB

>100dB

>90d B

>70d B

>70dB

>70dB

>105dB

>350

>350

>350

>500

45v /μs

60v /μs

45v /μs

45v /μs

Shor t Circuit , Curren t Limited DC Faul t AC Lin e Fuse , Thermal Cut off, Powe r Up/dow n Transients , Slo w Start

Variable Speed Fan

POWE R CONSUMPTIO N HAL F POWER/8 Ω

100dB

>100dB

>90d B

>70d B

>70dB

>70dB

>105dB

>350

>350

>350

>500

45v /μs

60v /μs

45v /μs

45v /μs

Shor t Circuit , Curren t Limited DC Faul t AC Lin e Fuse , Thermal Cut off, Powe r Up/dow n Transients , Slo w Start

Variable Speed Fan

POWE R CONSUMPTIO N HAL F POWER/8 Ω