Related Manuals for Quest Engineering Q-Tech QTA-4120P
Summary of Contents for Quest Engineering Q-Tech QTA-4120P
- Page 1 Q-Tech Q-Tech Commercial Series QTA-4060P/4120P 4 Channel Power Amplifiers User Manual QTA 4060P PUBLIC ADDRESS AMPLIFIER PROT PEAK SIGNAL POWER...
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Page 2: Table Of Contents
Contents Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 General Description . -
Page 3: Safety Precautions
QTA-4060P/4120P User Manual Safety Precautions • Be sure to read the instructions in this section carefully before use. • Make sure you observe the instructions in this manual as the conventions of safety symbols and messages are very important. • We also recommend you keep this instruction manual handy for future reference. - Page 4 QTA-4060P/4120P User Manual WARNING When Installing the Unit When the Unit is in Use • Do not expose the unit to rain or an • Should the following irregularity be found environment where it may be splashed by during use, immediately switch off the water or other liquids, as doing so may power, disconnect the power supply plug result in fire or electric shock.
- Page 5 QTA-4060P/4120P User Manual CAUTION When the Unit is in Use When Installing the Unit • Do not place heavy objects on the unit • Never plug in nor remove the power as this may cause it to fall or break which supply plug with wet hands, as doing so may result in personal injury and/or may cause electric shock.
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Page 6: General Description
QTA-4060P/4120P User Manual General Description With four separate power amplifiers in a single chassis and power ratings from 60 to120 watts RMS, these sleek, attractive units provide a compact solution for PA system amplification and distribution. Each channel has its own input and 4 ohm, 70V and 100V speaker outputs, so a wide variety of audio sources and speaker zones can be easily configured. -
Page 7: Front Panel Layout
QTA-4060P/4120P User Manual Front Panel Layout QTA 4060P PUBLIC ADDRESS AMPLIFIER PROT PEAK SIGNAL POWER Power Switch (CH3) Volume On top of the opening Power Press the end, Channel volume control power shut down Signal (CH1/CH2/CH3/CH4) (CH1) Volume Signal indicator LED Channel volume control When lit input signal is detected (CH2) Volume... -
Page 8: Rear Panel Layout
QTA-4060P/4120P User Manual Rear Panel Layout CLASS 2 WIRING MAY BE USED OUTPUT 4 OUTPUT 3 OUTPUT 2 OUTPUT 1 INPUT 4 INPUT 3 INPUT 2 INPUT 1 • • • •• • • • •• • • •• •• • • C /4/ 70V/100V C /4/ 70V/100V C /4/ 70V/100V... -
Page 9: Connections
QTA-4060P/4120P User Manual Connections Speaker Connections Notes: • Both the 4 70V/100V terminals cannot be used at the same time Ω • Impedances indicated in the figures represent the total speaker system (load) impedances WARNING Be sure to attach the supplied terminal cover after connection completion. Because high voltage is applied to the speaker terminals, never touch these terminals to avoid electric shocks. -
Page 10: Applications
QTA-4060P/4120P User Manual Applications QTA-4060P/QTA 4120P Rear Panel Connections User Manual Q-Tech Commercial Series QTA-4060P/4120P... -
Page 11: Block Diagram
QTA-4060P/4120P User Manual Block Diagram Q-Tech Commercial Series User Manual QTA-4060P/4120P... -
Page 12: Specifications
QTA-4060P/4120P User Manual Specifications Model QTA4060P QTA4120P Rated Power Output 4X60W 4X120W Speaker Outputs 4Ω,70V/100V Outputs Noise <3mV Impedance 200:1 Input Sensitivity 775mV/0dB Frequency Response 50Hz~16KHz distortion<1.5Db S/N Ratio >15V/microsecond T.H.D <1% Cool Method Copulsive Wind Cool Form Indicators Signal, Protection, Peaking Protection Power on, Overload and Protection Power Requirements... -
Page 13: Dimensional Diagram
QTA-4060P/4120P User Manual Dimensional Diagram UNIT: mm Keep all the unit’s sides over 10cm away from objects that may obstruct air flow to prevent the unit’s internal temperature rising. UNIT: mm Q-Tech Commercial Series User Manual QTA-4060P/4120P... -
Page 14: Technical Notes
QTA-4060P/4120P User Manual Technical Notes voltage outputs (70V 100V) and a terminal at one end for the negative return wire (COM). Constant Voltage Distributed A low impedance terminal will be for Speaker Systems Demystified 8-ohm speaker installations and is under In a typical paging and background music no circumstances to be connected to a speaker installation, quantity loudspeakers are... -
Page 15: Amplifier Power
QTA-4060P/4120P User Manual A system that does not distort will give 15% discrepancy can mean that a 100 much clearer voice reproduction than a watt system will only be able to power 7 louder system that is distorting or loosing or 8 x10 watt speakers safely. - Page 16 QTA-4060P/4120P User Manual High impedance of speakers and output calculation table for 100Volt systems Output Impedance Output Impedance Output Impedance 0.1W 100K Ω Ω Ω 0.5W Ω Ω Ω Ω Ω Ω 100W Ω Ω Ω 3.33K 150W 66.7 Ω Ω...
- Page 17 QTA-4060P/4120P User Manual Q-Tech Commercial Series User Manual QTA-4060P/4120P...
- Page 18 QTA-4060P/4120P User Manual User Manual Q-Tech Commercial Series QTA-4060P/4120P...
- Page 19 QTA-4060P/4120P User Manual Q-Tech Commercial Series User Manual QTA-4060P/4120P...
- Page 20 Quest Engineering Pty Ltd 86 Derby St. Pascoe Vale VIC 3055 Ph 613 9354 9133 | Fax 613 9354 9233...