Atlas AA240 Owner'S Manual Download

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AtlasSound.com

Specifications are subject to change without notice.

Owner’s Manual

AA240 Mixer Amplifier

1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.

Telephone: 800.876.3333 • Fax: 800.765.3435

AA240 Atlas Sound Mixer Amplifier

Summary of Contents for AA240

Page 1: ...d com Specifications are subject to change without notice Owner s Manual AA240 Mixer Amplifier 1601 Jack McKay Blvd Ennis Texas 75119 U S A Telephone 800 876 3333 Fax 800 765 3435 AA240 Atlas Sound Mixer Amplifier ...

Page 2: ...nstructions 3 Introduction Features and Applications 6 Front Panel Description 7 Rear Panel Description 8 11 Quick Start Examples 12 14 Wiring the AA240 15 Load Consideration and Overload LED 15 Measuring Speaker Loads 16 Measuring 25V 70 7V Distributed Speaker Systems 16 Security Covers Option 17 Wiring the AAVCC 10K VCA Potentiometer 17 AA240 Block Diagram 18 Optional Input Transformer Installat...

Page 3: ...oving the cart device combination to avoid injury from tip over 13 Unplug this device during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the device has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the device the device has been ex...

Page 4: ...may result When unplugging the cord from the wall grasp the plug NOT the cord Never install this device in humid or dusty locations nor in direct sunlight near sources of heat or in areas where sooty smoke or steam are present Fire and electric shock may result Keep all sides of the device at least 31 2 away from objects that may obstruct air flow to prevent the unit s internal temperature rise Am...

Page 5: ...ical storm electric shock may result Never exceed the wattage on the product when connecting equipment Fire and or property damage may result Operate the device only with the voltage specified on the unit Fire and or electric shock may result if a higher voltage is used Do not modify kink or cut the power cord Do not place the power cord in close proximity to heaters and do not place heavy objects...

Page 6: ...nstaller in today s commercial business audio environment Features Zone 1 Output 240 Watts Zone 2 Output 1 Watt 8Ω or 1 5V 600Ω Inputs 1 5 Mic Line Switchable Input 6 Line Level Only Input 1 has VOX Send Inputs 2 6 have Switch Selectable Mute Receive 2 Tape and 2 Line Outputs Remote VCA Selectable INPUT 6 or MASTER Switch Selectable Bridge In Out Bus Allows Amplifier Combining Pre Amp Out Power Am...

Page 7: ...e speakers 5 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 chan nel gain control until this LED just starts to flash green Once all the sources connected are playing the SIGNAL LED may be on solid This condition is normal 6 Master Gain Control The MASTER GAIN CONTROL will raise or lower all the input channels t...

Page 8: ... and Mic modes In some Line source input application the Phantom Power may cause popping This can be corrected by adding a 10uf 100uf 50V electrolytic capacitor in series with the input Contact Atlas for an application note Dipswitch 8 When set to the Master position the VCA control port acts as an overall system remote volume control adjusting all the input channels present on the master section ...

Page 9: ...gether G to M the assigned channels will be muted Note Input 1 cannot be VOX or remote muted at anytime Dipswitches 2 5 settings determine which inputs are to receive the Mute trigger To trigger the mute it is common to use an external contact closure or switch on a microphone 17 Zone 2 Output 600Ω The 600Ω 1 5V Zone 2 Out output is typically connected to a PBX MUSIC ON HOLD port also known as MOH...

Page 10: ...ng a 10uf 100uf 50V electrolytic capacitor in series with the input Contact Atlas for an application note 23 Input 6 INPUT 6 consists of a pair of stereo summing line level inputs Connect unbalanced audio outputs here such as CD players or audio from DVD players 24 Line Out A B The LINE OUT connector is useful for providing unbalanced line level signal to another amplifier or other external device...

Page 11: ...otal load impedance of no less than 2 6Ω 70 7V Connect to transformer coupled 70 7V loudspeakers with a total load impedance of no less than 21Ω 100V Connect to transformer coupled 100V loudspeakers with a total load impedance of no less than 41 6Ω 29 Power Cord Connect the power cord to 120VAC only Serious damage may result if accidentally connected to other line voltages 30 Unswitched Outlet The...

Page 12: ...2 output to the MOH input on your telephone Adjust the Zone 2 Output level as needed Connect a wall mount volume control Atlas Part Number AAVC 10K to the terminals marked VCA Set Dipswitch B 8 VCA to Master 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 Dipsw...

Page 13: ... 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 pur poses a signal from the hotel s fire alarm system is connected to channel 1 of both amplifiers with the mute sensitivity adjusted as needed All other channels are set for mute receive and will mute when the siren tone is present on channel 1 Dipswitch...

Page 14: ... Type Dipswitch 8 Master Dipswitch 1 On Dipswitch 2 On Dipswitch 3 On Dipswitch 4 On Dipswitch 5 On Dipswitch 6 On 10 0 10 0 0 10 On Off Input 6 Input 5 Input 4 Input 3 Input 2 10 0 10 0 10 0 Bass Treble 0 10 Input 1 Master Power Power Limit Peak Signal VCA In Out Bridge Sel Zone 2 Out Ω 1W 8 Ω 600 Remote Mute Input 2 Trim Input 3 Trim Input 5 Input 6 Off On Off On Off On Off On Input 2 On Off Lin...

Page 15: ...ED on damage may occur Refer to page 16 of manual for protect conditions In most situations when the LED is illuminated it means the speaker system load to the amp is lower than what the amp is rated for This usually is detected when you first are setting up the system Below are a few load conditions to check for if the Protect light is on 1 Connected to the wrong speaker terminal Always check the...

Page 16: ...volume controls There are several Audio Impedance meters on the market if you need to buy one we suggest going to MCM Electronics or search the internet for Audio Impedance Meter Measuring 25V 70 7V Distributed Speaker Systems Large distributed systems typically utilize 25 2V or 70 7V transformers 50V and 100V in Europe to greatly ease the connection of multiple speakers and facilitate long cable ...

Page 17: ...the pot terminals to the terminals marked VCA on the back of the amp 10 0 10 0 0 10 On Off Input 6 Input 5 Input 4 Input 3 Input 2 10 0 10 0 10 0 Bass Treble 0 10 Input 1 Master Power Power Limit Peak Signal VCA In Out Bridge Sel Zone 2 Out Ω 1W 8 Ω 600 Remote Mute Input 2 Trim Input 3 Trim Input 5 Input 6 Off On Off On Off On Off On Input 2 On Off Line Mic Line Mic Line Mic Sens Input 1 Input 2 I...

Page 18: ...MIC MUTE PRE TRIM CHANNEL 3 IN 3 LEVEL LINE PHANTOM MIC MUTE PRE TRIM CHANNEL 4 IN 4 LEVEL LINE PHANTOM MIC MUTE PRE TRIM CHANNEL 5 IN 5 LEVEL LINE PHANTOM MIC MUTE PRE TRIM IN 6 LEVEL 100mV 300mV MUTE PRE AMP IN PRE PRE BRIDGE IN OUT SELECT ACTIVATE MASTER LEVEL LINE OUT A B 70 7V ZONE 2 LEVEL VCA VCA BASS TREBLE FILTER Input 6 Off On Off On Off On Off On Input 2 On Off Line Mic Line Mic Line Mic...

Page 19: ...1601 Jack McKay Blvd Ennis Texas 75119 U S A Telephone 800 876 3333 Fax 800 765 3435 Optional Input Transformer Installation Contact Atlas Sound at 1 800 876 3333 for price and availability INPUT 1 TRANSFORMER JUMPERS INPUT 1 OPTIONAL TRANSFORMER SOCKET XFMER IN XFMER BYPASS XFMER IN XFMER BYPASS p n AAIT 600 ...

Page 20: ...Distortion 1 at rated power 1kHz Sensitivity Input 1 Line Tel 316mV 10dBV 10kΩ 600Ω with optional transformer Mic 316mV 3 16mV 50dBV 70dBV Inputs 2 5 Line 316mV 10dBV 10kΩ Mic 316mV 3 16mV 50dBV 70dBV Input 6 Line 300mV 100mV 10dBV 20dBV Selectable Outputs Main Transformer coupled balanced 4Ω 25V 70V and 100V Zone 2 8Ω Unbalanced 1W Zone 2 600Ω Balanced 1 5V Signal To Noise Ratio Mic 55dB Line 55d...

Page 21: ... 21 AtlasSound com Specifications are subject to change without notice Owner s Manual AA240 Mixer Amplifier 1601 Jack McKay Blvd Ennis Texas 75119 U S A Telephone 800 876 3333 Fax 800 765 3435 Notes ...

Page 22: ...AtlasSound com 22 Specifications are subject to change without notice Owner s Manual AA240 Mixer Amplifier 1601 Jack McKay Blvd Ennis Texas 75119 U S A Telephone 800 876 3333 Fax 800 765 3435 Notes ...

Page 23: ... 23 AtlasSound com Specifications are subject to change without notice Owner s Manual AA240 Mixer Amplifier 1601 Jack McKay Blvd Ennis Texas 75119 U S A Telephone 800 876 3333 Fax 800 765 3435 Notes ...

Page 24: ...rms of this warranty All warranty returns must comply with our returns policy set forth below When products returned to Atlas Sound do not qualify for repair or replacement under our warranty repairs may be performed at prevailing costs for material and labor unless there is included with the returned product s a written request for an estimate of repair costs before any nonwarranty work is perfor...

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