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10 

 

 

5.

 

APPLICATION

 

AND

 

TROUBLE

 

SHOOTING

 

TIPS

 

 

The XT Series makes up components of a high-quality professional sound reinforcement system designed for use in both indoor, 

and dry outdoor applications. Some basic precautions will insure long-term reliability. 

 

EQUALIZATION

 

AND

 

GAIN 

 

 

The XT-15A SUB and 18A SUB have all the required equalization and gain functions included in the digital signal processing circuits. 

Both the equalization and gain functions have been optimized for flat frequency response and maximized system dynamics.  

 

If distorted sound is heard the gain and EQ settings on the outboard mixer and any other external equipment should be carefully 

checked to ensure that the input section of the XT enclosure is not overloaded. 

 

If additional equalization is required, care should be taken to avoid excessive EQ in any frequency band, but particularly at low 

frequencies. Excessive equalization can produce “band selective” clipping and distortion. All EQ boost levels should be monitored 

if system distortion is present. 

 

PROBLEM: Distorted sound 

 

When input levels to the XT  amplifiers exceed 0.775 V RMS for line level inputs  it is possible to produce system clipping or 

overdrive. It is still possible to “overdrive” the input section of the enclosure. If distorted sound is present the following steps 

should be taken: 

 

1.

 

Verify that the mixer’s output is not clipping or overloaded. If the output metering section of the mixing console is 

continuously in the “red” then the output level should be reduced. (occasional “red” indications are usually fine and are 

dependent on the mixing console’s output capability). 

 

2.

 

Verify that excessive equalization is not present anywhere in the signal chain. 

 

3.

 

Verify that AC mains levels are within the required range. 

 

 

Voltage measurements on the AC Mains should be performed by a licensed electrician or individual trained in making 

high-voltage measurements. 

 

 

PROBLEM: No sound from active units 

 

      1. Verify that the amplifier pilot light is on. 

 

      2. Verify that there is AC Mains voltage on the AC Mains input to the amplifier. 

 

 

 

NOTE:

  NOT DO ATTEMPT TO REPLACE THE FUSE.  THERE ARE NO USER  SERVICABLE PARTS INSIDE THE XT  SERIES 

AMPLIFIERS. 

 
 

 

 

Summary of Contents for XT Series

Page 1: ...P AUDIO XT SERIES MANUAL...

Page 2: ...system s installer AND end user 3 This manual must be read and understood and ALL warnings must be followed 4 Follow all instructions to insure optimal product performance 5 The XT Active products are...

Page 3: ...design and operation of this advanced active speaker system The XT Series of products is designed for both installation and portable truly professional sound reinforcement systems The XT series of mi...

Page 4: ...1 1 x 16 5 x 23 2inches 538 x 650 x 650mm 21 2 x 25 6 x 25 6inches 538 x 650 x 650mm 21 2 x 25 6 x 25 6inches Acoustic Specifications Sensitivity 92dB 93dB 95dB 95dB 97dB N A 98dB N A Frequency Respon...

Page 5: ...h Switch Mode Power Supply N A Class D with Switch Mode Power Supply Protection N A N A N A N A N A Turn On Delay Short Circuit Protection DC Voltage Protection Peak Voltage Limiter Over Temperature P...

Page 6: ...cceptable voltage range is 85VAC 265VAC The amplifier s switch mode power supply SMPS will automatically adjust to the mains voltage present The powered XT enclosures use a standard IEC type connector...

Page 7: ...h male and female XLR type connectors and speakon connectors Any standard XLR type cable end connectors may be used The image below illustrates the inputs found on the amplifier plate Line Input and L...

Page 8: ...log screen will appear checking options for connecting to the device in question To ensure communication occurs on the right COM cable this must be selected from the drop down list For linking between...

Page 9: ...nal preset file must be used to recover the data Recall Loads a preset from the amplifier memory remotely This allows presets to be changed on units in inaccessible locations However once the COM cabl...

Page 10: ...ble that protection will be desired to ensure other users do not get unwanted access If the LOCK button is pressed a password prompt will be shown To block use to all features of the software only sig...

Page 11: ...be monitored if system distortion is present PROBLEM Distorted sound When input levels to the XT amplifiers exceed 0 775 V RMS for line level inputs it is possible to produce system clipping or overdr...

Page 12: ...power amplifier THE INTERNAL FUSE IS NOT USER REPLACABLE UNDER NO CIRCUMSTANCES SHOULD THE AMPLIFIER PANEL BE REMOVED FROM THE CABINET Care should be exercised when disconnecting the amplifier module...

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