Quest Engineering QTA 2120P User Manual

Quest Engineering QTA 2120P User Manual

Q-tech commercial series 2-channel power amplifiers

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Q-Tech
Q-Tech Commercial Series
QTA
2120P/2240P
2-Channel Power Amplifiers
User Manual

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Summary of Contents for Quest Engineering QTA 2120P

  • Page 1 Q-Tech Q-Tech Commercial Series 2120P/2240P 2-Channel Power Amplifiers User Manual...
  • 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

    Technical Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Q-Tech Commercial Series User Manual QTA 2120P/2240P...
  • Page 4: Introduction

    2120P/2240P User Manual Introduction Description Congratulations on your purchase of a new The QTA 2120P and QTA 2240P are 2 channel Q-Tech Commercial series amplifier. Quest power amplifiers designed for 2 zone Engineering Q-Tech Series amplifiers are applications. engineered and built to a standard that will...
  • Page 5: Front Panel Layout

    Channel 2 XLR Input Channel 2 Speaker Terminal Channel 1 Link Output Channel 1 Speaker Terminal Channel 1 Phone Jack Input 24v DC Power Input Channel 1 XLR Input Channel 2 Link Output Q-Tech Commercial Series User Manual QTA 2120P/2240P...
  • Page 6: Power Source

    COM connections and all the wattage connections following a parallel connection. User Manual Q-Tech Commercial Series QTA 2120P/2240P...
  • Page 7: Operation

    If necessary, turn the gain control • Check also speaker types, ratings and for on the rear panel to what you desire. We any short circuits on the speaker line. suggest turning the gain level to maximum always. Q-Tech Commercial Series User Manual QTA 2120P/2240P...
  • Page 8: Specifications

    Speaker Systems Demystified Type Booster Amplifier In a typical paging and background music speaker installation, quantity loudspeakers Model QTA 2120P QTA 2240P are placed across a single amplifier in a parallel wiring configuration (see Fig 1.). Output Power 120W x 2...
  • Page 9: Amplifier Power

    The quick way is to just add up all the wattages and then give yourself 10-20% headroom by reducing the number of speakers per amplifier or lowering the wattages slightly. Q-Tech Commercial Series User Manual QTA 2120P/2240P...
  • Page 10 200W 50Ω (100V plan) P = E x E / Z = 100x100 / Z = 10,000 / Z P: Power(W), Z : Impedance (Ω), E : 100V(Designed voltage of a general-use amplifier) User Manual Q-Tech Commercial Series QTA 2120P/2240P...
  • Page 12 Quest Engineering Pty Ltd 86 Derby St. Pascoe Vale VIC 3055 Ph 613 9354 9133 | Fax 613 9354 9233...

This manual is also suitable for:

Qta 2240p

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