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Q-Tech

Q-Tech Commercial Series

QTA

6060M/6120M/6250M

Mixer Amplifiers

User Manual

Содержание Q-Tech QTA 4040M

Страница 1: ...Q Tech Q Tech Commercial Series QTA 6060M 6120M 6250M Mixer Amplifiers User Manual ...

Страница 2: ...nts Safety Precautions 1 General Description 4 Features 4 Front Panel Layout 5 Rear Panel Layout 6 Connections 10 Applications 11 Block Diagram 14 Specifications 15 Dimensional Diagram 16 Technical Notes 17 ...

Страница 3: ...Safety Symbol and Message Conventions Safety symbols described below are used in this manual to prevent bodily injury and property damage which could result from mishandling Before operating your product read this manual first and understand the safety symbols and messages so you are thoroughly aware of any risks Indicates a potentially hazardous situation which if mishandled could result in death...

Страница 4: ...rop metallic objects or flammable materials in the ventilation slots of the unit s cover as this may result in fire or electric shock When Installing the Unit Do not expose the unit to rain or an environment where it may be splashed by water or other liquids as doing so may result in fire or electric shock Use the unit only with the voltage specified on the unit Using a voltage higher than that wh...

Страница 5: ...t is in Use Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury and or property damage In addition the object itself may fall off and cause injury and or damage Make sure that the volume control is set to minimum position before power is switched on Loud noise produced at high volume when power is switched on can impair hearing Do not op...

Страница 6: ...bridge in out feature to allow combining of multiple amplifiers in applications without the need for external relays VCA remote level control circuitry is included which may be assigned to the background music input or globally for the entire amplifier Features Rated output 60w 120w and 250w 24V DC interface Tape output Dual line output VCA level control 1 stereo Aux line input Pre out power in pa...

Страница 7: ...te of 5dB 4 Treble Control The TREBLE CONTROL is a shelving type control which will boost or cut treble frequencies at 10kHz at the rate of 5dB 5 Master Gain Control The MASTER GAIN CONTROL will raise or lower all the input channels together 6 Chime Chime control 7 SIGNAL LED This LED will assist you in setting gain structure into the amp With a source connected to the amp and playing turn up the ...

Страница 8: ...o recording devices The signal available here is PRE tone control and low cut filter and comes from the internal mix bus 15 Line Out A B The LINE OUT connector is useful for providing unbalanced line level signals to another amplifier or other external devices Prior to using this feature one must understand where the internal signal pick up point is so you can decide if it is correct for your appl...

Страница 9: ...where a lower amplitude signal will trigger a mute send Careful calibration of this control may be required to fully utilize the mute circuits capabilities Adjustment of this control should occur after the input trim 19 for channel 1 is set 21 Inputs 1 5 Trim These variable controls allow fine tuning of the gain of INPUTS 1 5 There is 20dB of variable gain available The trim only applies when the ...

Страница 10: ...s its signal from INPUT 6 volume control 25 VCA Remote location of the level control can be accomplished via the VCA control port You can control the overall level Master or just Input 6 This selection is made via Dipswitch B position 8 Connect the two leads from the optional remote volume control to these terminals This remote level control is POST Master and Input 5 Level Controls Set the system...

Страница 11: ...tain installations have the need to combine one or more Mixer amps together These Mixer amps may operate different rooms of an install but have the need to share a page or music throughout the installation These terminals provide a way to send and receive balanced line level signals from the internal mix bus of the Mixer amp The BRIDGE IN OUT feature is PRE Tone Controls and Low Cut Filter The Bri...

Страница 12: ...Vca Potentiom eter Quest part number VCC 10K consists of a single gang wall plate with a pre mounted 10K poten tiometer and knob This pot may be mounted on a plate to match the wall plates as nominated by the Architect Use two conductor unshielded wire connecting the pot terminals to the terminals marked VCA on the back of the amp Security Covers Option In order to prevent unauthorized operation o...

Страница 13: ...Mic position Note The INPUT 1 Trim and Sens will need to be adjusted after all the settings and connections have been set Dipswitch Settings Dipswitch 1 Off Set To The Required Gain Dipswitch 2 Off Not Affected Dipswitch 3 Off Not Affected Dipswitch 4 Off Not Affected Dipswitch 5 Off Line Dipswitch 6 On Mic Dipswitch 7 Depends On Mic Type Dipswitch 8 Master Connect a BGM CD player to INPUT 2 Set D...

Страница 14: ...at makes combines or breaks separates the Bridge connections between the amplifiers When the switch is closed any audio signal into either amp will be present at both amplifiers speaker outputs A volume control and DPST switch see drawing for clarity controls the background music level and turns the music on or off in each room For emergency evacuation purposes a signal from the hotel s fire alarm...

Страница 15: ...CD player s audio outputs are connected to Input 6 and a recording device cassette recorder or computer s audio input is connected to the Tape Out jacks For system tuning a 1 3rd octave graphic EQ is connected to the Pre Out Pwr In jacks For the cry room an 8 Ohm speaker is connected to the Zone 2 1W 8 output Dipswitch Settings Dipswitch A 1 6 All Off Dipswitch B 1 8 Switch 1 300mV Switch 2 Not Us...

Страница 16: ...QTA 6000 Series User Manual User Manual Q Tech Commercial Series QTA 6060M 6120M 6250M 14 Block Diagram ...

Страница 17: ...mer Mic 316mV 3 16mV 50dBV 70dBV Input 1 5 Line 316mV 10dBV 10Kohm Mic 316mV 3 16mV 50dBV 70dBV Input 6 Line 300mV 100mV 10dBV 20dBV Selectable Outputs Main Transformer coupled balanced 8Ω 25V and 70V Zone 2 8Ω Unbalanced 1W Zone 2 600Ω Balanced 1 5V Signal to Noise Ratio Mic 55dB Line 55dB Telephone 75dB Tone Controls Bass 10dB 100Hz Tone Controls Treble 10dB 10kH Indicators Power signal peak Pow...

Страница 18: ... User Manual Q Tech Commercial Series QTA 6060M 6120M 6250M 16 Dimensional Diagram UNIT mm 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 ...

Страница 19: ... 100V and a terminal at one end for the negative return wire COM A low impedance terminal will be for 8 ohm speaker installations and is under no circumstances to be connected to a transformer type speaker system Installation practice Step 1 Take a piece of figure 8 cable connect the stripe coloured wire to the 100V terminal and the uncoloured wire to the COM on the amplifier terminal strip Step 2...

Страница 20: ...20 The reason is that most ceiling speakers draw more than their claimed wattage The alternative would be to connect the speakers to the 4 watt transformer terminal giving you a theoretical total draw of 80 watts and thus plenty of headroom One watt difference is not very noticeable as far as output sound pressure level in concerned A system that does not distort will give much clearer voice repro...

Страница 21: ...100KΩ 10W 1KΩ 40W 250Ω 0 5W 20KΩ 15W 667Ω 50W 200Ω 1W 10KΩ 20W 500Ω 75W 133Ω 2W 5KΩ 25W 400Ω 100W 100Ω 3W 3 33KΩ 30W 333Ω 150W 66 7Ω 5W 2KΩ 35W 286Ω 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 High impedance of speakers and output calculation table for 100Volt systems ...

Страница 22: ...QTA 6000 Series User Manual User Manual Q Tech Commercial Series QTA 6060M 6120M 6250M 20 ...

Страница 23: ......

Страница 24: ...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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