Frequently Asked Questions


TABLE OF CONTENTS


What speakers are in the TX4 lineup?

The TX4 series features 8", 10", 12", and 15" woofer models. They are aptly named TX408, TX410, TX412, and TX415.


How many watts do the TX4 speakers output?

The 8" and 10" models are 350 watts, and the 12" and 15" models are 700 watts. 


What inputs do the TX4 Series speakers have?

Each TX4 speaker has 1 Combo XLR/TRS jack, which supports both balanced and unbalanced audio. They also receive a Bluetooth signal when you pair a supported Bluetooth Device.


How do I pair my TX4 speaker with a Bluetooth device?

To connect the speaker with a Bluetooth device follow these steps: 

  • Hold down the pairing button for 3 seconds to initiate pairing.
  • The blue LED on the speaker will flash, indicating that it is in pairing mode.
  • Navigate to your device's Bluetooth device list and select ”Alto TX408,” “Alto TX410,” “Alto TX412,” or “Alto TX415” to connect.
  • Once paired, there will be a voice prompt stating the connection was successful, and the blue LED will be lit solid. 

Note: Pressing the pair button while in pairing mode will cancel the connection.


The TX4 speakers have a stereo-link mode allowing two TX4 speakers to be paired wirelessly. To set up the stereo-link mode, follow the steps below:  

 

  • Connect one speaker to Bluetooth following the steps above. This will be the primary speaker.
  • Hold the pairing button for 3 seconds to initiate stereo-link. Do this for both speakers.
  • Both speakers will beep to indicate they are in scanning mode, and the orange LED will blink. When they find each other, they will link automatically.
  • Once the two speakers are successfully linked, there will be a confirmation chime, and the Orange LED will be lit solid.
  • Press and hold the pair button on either speaker to disconnect. 

Once the speakers are in the stereo-link, the Bluetooth Volume knob on either speaker will control volume for both speakers

Notes: 

  • If you link the speakers first, only one speaker will connect to Bluetooth.
  • If pair mode is activated on both speakers (pair button held for 3 seconds), you may encounter trouble linking until pair mode is cancelled or times out. 
  • The stereo-link is only for Bluetooth signal.

Mix Out will also include Bluetooth signal. If using with more than one additional speaker, this may be a better setup than the single.


Why are there Mic/Line switches, and what do they do?

Referred to in the manual as 'Input Selectors, ' these switches allow you to set the input to the Line position when using a line-level audio source connected to the Channel 1 Input, or to the Mic position when using a microphone connected to the Channel 1 Input

This allows you to turn up the volume without fear of overdriving your TX4. If you are unsure of whether your input is Mic or Line, start with Line first and make sure your source volume is at a sufficient level. If this is still not loud enough, turn your volume all the way down, switch to mic, and turn up until an appropriate volume is reached.

Note: The TX4 series are optimized to provide maximum output for your source when the volume knobs are turned all the way up (5 o’clock).


What do I do if there is a delay between my linked speakers?

If you experience a delay between two linked speakers, please first try pausing and restarting your audio. If that does not work, try powering off both speakers and re-linking them. 


What is the Ground button for on the back of the speaker?

Egange this switch to reduce hum or noise introduced by a ground loop. 


What does the Contour Button do? 

Engage (depress) this button to emphasize low and high frequencies by +3 dB. Disengage (raise) the 

switch for a flatter response for live performance or for maximum output.