Related Manuals for Quest Engineering Q-Tech QTA1120P
Summary of Contents for Quest Engineering Q-Tech QTA1120P
- Page 1 Q-Tech Commercial Series QTA1120P/1240P Power Amplifiers User Manual OUTPUT LEVEL QTA 1240P PUBLIC ADDRESS AMPLIFIER Pwr -10 POWER...
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Page 2: General Installation
General Installation WARNING DO NOT run unbalanced high impedance microphone cables near mains, data, telephone or 70/100V line cables. THIS APPLIANCE MUST BE EARTHED DO NOT run 70/100V line cable near data, telephone or other low voltage cables. DO NOT exceed 90% of the amplifiers output power when using 70/100V line (speech only). -
Page 3: Table Of Contents
QTA-1120P/1240P User Manual Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Description . -
Page 4: Introduction
• 7 step LED Ramp for signal presence For your safety and continuing reliability of your Quest amplifier, please read all the safety • XLR and phone jack input instructions and familiarize yourself with the • Rear mounted Input gain control... -
Page 5: Front Panel Layout
QTA-1120P/1240P User Manual Front Panel Layout OUTPUT LEVEL QTA 1120P PUBLIC ADDRESS AMPLIFIER Pwr -10 POWER Power On Indicator LED Level Indicator LED Power Switch Rear Panel Layout VOLTAGE SELECT BALANCED OUTPUT BALANCED INPUT @ 10K ohms @ 10K ohms AC 115/240V 50/60Hz CAUTION RISK OF ELECTRIC SHOCK... -
Page 6: Power Source
QTA-1120P/1240P User Manual Power Source Speaker Output Connection The speaker output screw terminal is on the rear panel. It can connect low impedance 8 AC Power Source ohm, or high-level 70V or 100V speaker. Use The supply transformer has been designed for only one of these output connections for AC 240V /115V (±10%) 50 /60 Hz. -
Page 7: Installation Practice
QTA-1120P/1240P User Manual Please ensure the switch is on the Mono The only way to test this is with an position when you are not connecting to impedance meter on a single speaker. A another amplifier. 15% discrepancy can mean that a 100 watt system will only be able to power 7 When it is connected to another amplifier, put or 8 x10 watt speakers safely. -
Page 8: Trouble Shooting
QTA-1120P/1240P User Manual Trouble Shooting Specifications If the amplifier fails to work as required, Type Booster Amplifier please check the following: Model QTA-1120P QTA-1240P No Power, No Lights Output Power (RMS): 120W 240W • Make sure amplifier power switch is on. •... -
Page 9: Technical Notes
QTA-1120P/1240P User Manual Technical Notes A low impedance terminal will be for 8-ohm speaker installations and is under no circumstances to be connected to a Constant Voltage Distributed transformer type speaker system. Speaker Systems Demystified In a typical paging and background music How to calculate the correct speaker installation, quantity loudspeakers are number of speakers and what... - Page 10 QTA-1120P/1240P User Manual For the benefit of those who want to calculate When the speaker line reaches its top voltage the power of the system with a formula. See of 70 Volts, the formula is: below: Power = 5000 / Impedance (because 70 squared equals 5000).
- Page 12 Quest Engineering Pty Ltd 86 Derby St. Pascoe Vale VIC 3055 Ph 613 9354 9133 | Fax 613 9354 9233...
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