Alto Professional - Uber PA Frequently Asked Questions

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UBERPAUber PA is a self-powered portable wireless PA system with Bluetooth technology. It’s the perfect solution for delivering hours of clear, punchy, high-fidelity sound from a wide variety of wireless or hard-wired signal sources, whether you have access to AC power or not. This article will address frequently asked questions for the Uber PA.


Frequently Asked Questions


What are the dimensions and weight of the Uber PA?

The Uber PA's dimensions are: (H x W x D): 13.8" x 16.2" x 9.4" / 351mm x 412mm x 238mm.

The Uber PA weighs 16.8 lbs / 7.64 kg.


How loudly can this speaker produce audio? How much power does it have?

The Uber PA is rated for 50W peak output.


What is the frequency response of the Uber PA?

The Uber PA can reproduce frequencies from 90 Hz - 20 kHz.


What kind of battery does the Uber PA use?

The Uber PA uses a 12V, 5Ah, sealed lead acid battery.


How does the Uber PA charge? How long should I charge the battery? How long does the charge last?

The Uber PA charges by plugging it into a wall outlet with a standard 3-prong IEC cable. The charge indicator LED on the front panel will illuminate when the Uber PA is connected to AC power and charging. The LED will turn off when the battery is charged - keeping the speaker plugged into a power outlet will not harm it. The battery level indicator LEDs will show the current amount of charge remaining on the Uber PA's battery. The battery takes about 6-8 hours to fully charge and the charge will last up to 50 hours of continuous use at moderate volume.


Can I bring the Uber PA to a different country?

Yes, the Uber PA has an automatic switching power supply with a voltage range of 100-240 VAC, 50/60 Hz.


How many audio sources can I use at one time?

Three audio sources can be played simultaneously via the two mic/line level inputs and either the wireless Bluetooth or 3.5mm auxiliary inputs.


How should I set the volume controls on the speaker?

This depends on a number of factors, including what you have connected to the speaker and the various levels you have already set on your other equipment. _______________


How do I pair my Uber PA to my Bluetooth device?

  1. Turn on your Bluetooth device.
  2. Turn on the Uber PA using the power switch. If you have previously connected to another Bluetooth device, the Uber PA will reconnect to that device.
  3. Navigate to your Bluetooth device's Bluetooth setup screen, find Uber PA in the list of available devices and select it to connect. 
    Note: If your device requires a passcode or PIN, enter 0000.
  4. The Bluetooth LED on the Uber PA will light up solid when it is paired to a device. If your Bluetooth device is not able to connect to the Uber PA, press the Bluetooth button on the speaker for 15 to 20 seconds to disconnect previous Bluetooth connections and reset the Bluetooth module.
  5. Start audio playback from your Bluetooth device.
  6. To disconnect a connected Bluetooth device and connect to another Bluetooth device, press the Bluetooth button and repeat Step 3.
    Note: If you experience trouble connecting or playing music, update your device's OS.


My Bluetooth device sees the Uber PA but is unable to connect to it. How do I get my device to reconnect?

In your device's Bluetooth settings, select the Uber PA and choose "Forget Device". After the Uber PA has been removed from the list of previously connected devices, you should be able to reconnect your device to the Uber PA.


Does this speaker support Easy Pairing via NFC (Near Field Communication)?

Yes! Easy Pair is a form of NFC tap pairing, otherwise known as 'bump pairing'.  NFC stands for Near-field Communication and is the power behind the technology used in the Alto Professional Uber PA.  More information on what Near-field Communication is can be found here and here.  

Basically, NFC allows a device, usually a mobile phone, to collect data from another device or NFC tag at when it is moved into a close range. In many ways, it’s like a contact-less payment card that is integrated into a phone. In other ways, it’s similar to Bluetooth, except that instead of programming two devices to work together, they can simply touch to establish a connection.


Is my device Easy Pair capable?

Many popular Android smartphones have this feature. To date, there is no iOS device that has this feature.  You may need to refer to your device information, manual, or support to determine if your device is NFC-capable, however here are a couple of links that may help to determine if your device has this functionality:


    How do I use Easy Pair to connect my NFC capable device?

    NFC (near-field communication) allows data exchange from devices, such as pairing, by gently bumping them together. Check in your device’s manual to see if this feature is supported.

    To use NFC to pair with the Uber PA:

    1. In order to use NFC, your device must be turned on and unlocked.
    2. Enter your device’s Settings menu and check that NFC is turned On (one time step).
    3. Power on the Uber PA.
    4. Gently place your device against the ‘N’ logo located on Uber PA's top panel, and hold it there for a couple of seconds.
    5. Follow the pairing instructions that appear on your phone. If a passcode is required, enter “0000”.


    I'm having difficulty pairing using Easy Pair. What should I do?

    1. First, be sure you have an NFC or Easy Pair compatible device: Is my device Easy Pair capable?
    2. Next, carefully follow the Easy Pair pairing steps detailed above.
    3. The NFC chip in your phone or device is quite small.  Be sure you know where the chip is located in your device, and make sure you're touching this exact spot to the against the ‘N’ logo located on the Uber PA.  If you don't know exactly where the NFC chip is located inside your phone or device, visit the phone/device manufacturer's website to find out.
    4. While most users won't need to remove their case, if you've come this far and you're still having difficulty, try removing your phone case (if you have one).
    5. If you're still having difficulty, please contact Alto Professional technical support for further assistance.



    Does this speaker supply phantom power (+48 V) to a microphone via XLR?

    The Uber PA's XLR combo inputs will not supply phantom power to a microphone. Connect a microphone that does not use phantom power, an instrument with an active preamp, or a device that sends line level signal to the XLR inputs. If you do intend on using a microphone that requires phantom power, you will need to use a third party phantom power supply in line with the microphone.


    How can I use the USB port on the front of the speaker?

    The USB port on the front of the Uber PA can be used to charge your phone, tablet, or other device that charges via standard USB power (+5 V, 1 A). The USB port on the front of the speaker is for charging your devices only. It will not play audio from a USB flash drive or other external storage device that connects via USB.


    How can I use the Line Out port on the front of the speaker?

    Use a standard 1/4" (6.35mm) TRS cable to connect this output to the line level input of another loudspeaker. The Uber PA could be connected to a more powerful speaker or even another Uber PA's line input. The Line Out is post-Master Volume Control.


    Further Technical Support

    Whether you are a customer or dealer, if you already own an Alto Professional product, or if you have pre-sales or parts questions, the Alto Professional technical support team is available to help!  Each product has a dedicated support page on the website where you can find manuals, specifications, software updates, and troubleshooting guides: 

    Visit the link below to connect with any of the following support options: online community support, phone support, email support.



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