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QTA 

1360P/1480P

User Manual

User Manual

Q-Tech Commercial Series

QTA 1360P/1480P

3

Rear Panel Layout

Front Panel Layout

1

Speaker Output Terminal

4

DC Power Supply Terminal

2

2/XLR Input

6

AC Power Input Socket

3

Phone Jack Input

7

Ground Lift

4

XLR Link Output

6

7

2

4

3

5

1

1

Power Switch

4

Protection indicator LED - lit when overheating, 

short circuiting and overloading

2

Channel volume control

5

Peak indicator LED - lit when max wattage output 

and output signal distortion

3

Power indicator LED

6

Signal indicator LED - lit when input signal is 

detected

1

2

4

5 6

3

Содержание QTA 1360P

Страница 1: ...Q Tech Q Tech Commercial Series QTA 1360P 1480P Power Amplifiers User Manual ...

Страница 2: ...run in conduit together with power cables ENSURE that all loudspeakers are in phase ENSURE that there are no short circuits on the loudspeaker line before connecting to the amplifier It is also advisable to check the final impedance to the amplifier with a dedicated impedance meter to determine power draw is within the amplifiers limits IMPORTANT The wires in the mains lead are coloured In accorda...

Страница 3: ...Tech Commercial Series QTA 1360P 1480P 1 Contents Introduction 2 Description 2 Front Panel Layout 3 Rear Panel Layout 3 Power Source 4 Main Connections 4 Installation Practice 5 Operation 5 Trouble Shooting 6 Specifications 6 Technical Notes 7 ...

Страница 4: ...that if your audio installation is completed with the same attention to detail your amplifier will deliver its best results Please read the section Constant Voltage Distributed Speaker Systems Demystified Unpacking Please inspect the amplifier carefully immediately after unpacking If you find any damage notify your supplier dealer immediately Only the shipper may file a damage claim with the carri...

Страница 5: ...nput 6 AC Power Input Socket 3 Phone Jack Input 7 Ground Lift 4 XLR Link Output 6 7 2 4 3 5 1 1 Power Switch 4 Protection indicator LED lit when overheating short circuiting and overloading 2 Channel volume control 5 Peak indicator LED lit when max wattage output and output signal distortion 3 Power indicator LED 6 Signal indicator LED lit when input signal is detected 1 2 4 5 6 3 ...

Страница 6: ...o pin 1 For best performance when using long lines between microphones mixer and or amplifier use balanced lines These have the effect of canceling out any noise or hum that may be induced into the cables Speaker Output Connection The speaker output screw terminal is on the rear panel It can connect low impedance 8 ohm or high level 70V or 100V speaker Use only one of these output connections for ...

Страница 7: ...nnection on the ceiling speaker transformer and the other strip wire to the required voltage taping Step 3 Take a second piece of figure 8 cable and connect the plain wire to the parallel COM connection and the other stripe wire to the parallel output from the transformer terminal block and connect it in the same way to the next ceiling speaker Step 4 Continue this process until all the ceiling sp...

Страница 8: ...ally Blows Fuses Make sure that the speaker line is not shorted Check speaker types ratings and if on correct output Amplifier Keeps on Cutting In Out Make sure that there is adequate ventilation around the amplifier Check the vent slots on the front are not covered or blocked and the fan on the rear is functioning correctly Check also speaker types ratings and for any short circuits on the speake...

Страница 9: ... speaker system How to calculate the correct number of speakers and what wattage connection for a given amplifier power If you connect too many speakers to an amplifier you will have distortion overheating of the amplifier and generally poor performance The problem is not really too many speakers it is more a problem of too much wattage draw exceeding the output capability of an amplifier A simila...

Страница 10: ...ula See below Determining power by calculating total impedance The alternative to counting the speaker taping watts is to calculate the total impedance of the line which will also indicate the wattage necessary to drive the system correctly The computational formula is voltage squared divided by impedance Power Voltage2 Impedance When the speaker line reaches its top voltage of 70 Volts the formul...

Страница 11: ......

Страница 12: ...www questaudio net Quest Engineering Pty Ltd 86 Derby St Pascoe Vale VIC 3055 Ph 613 9354 9133 Fax 613 9354 9233 ...

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