Uber FX - Speaker ALTO - Free user manual and instructions
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USER MANUAL Uber FX ALTO
User Guide (English)
Introduction
Thank you for purchasing the Uber FX. At Alto Professional, performance and reliability mean as much to us as they do to you. That's why we design our equipment with only one thing in mind—to make your performance the best it can be.
Note: Before you first use the product, please fully charge the battery. Your unit was purposely shipped with a reduced battery charge to ensure safe transit.
Use the included power cable to connect the unit to a power outlet and let it charge for up to 12 hours. This helps ensure the longest life for your battery.
Box Contents
Uber FX
Power Cable
User Guide
Safety & Warranty Manual
Support
For the latest information about this product (system requirements, compatibility information, etc.) and product registration, visit altoproaudio.com.
For additional product support, visit altoproaudio.com/support.
Rechargeable Batteries
Rechargeable lead-acid batteries are the same type used in automobiles. As with your car battery, how you use this battery has a significant impact on its lifespan. With proper use and treatment, a lead-acid battery can last for years. Here are some recommendations for getting the longest life from the internal battery.
General Fully charge the battery before using the speaker.
Usage Charge the battery completely after each use.
Storage For best product longevity, do not store at exceedingly hot (greater than 90^ / 32^) or exceedingly cold (less than 32^ / 0^) temperatures.
It is acceptable to leave your speaker plugged in. This will not overcharge the battery.
If you leave the battery level low and do not charge it for 6 months, it may permanently lose capacity.
Repair If the battery fails to charge, contact Alto Professional at altoproaudio.com.
Disposal Bring the unit to a recycling center or dispose of in accordance with local ordinances.
Important Safety Precautions
Please note: Alto Professional and inMusic are not responsible for the use of its products or the misuse of this information for any purpose. Alto Professional and inMusic are not responsible for the misuse of its products caused by avoiding compliance with inspection and maintenance procedures. Please also refer to the included safety and warranty manual for more information.

Caution: To reduce the risk of electric shock, do not connect Uber FX to a power outlet while the grille is removed.
Sound Level
Permanent hearing loss may be caused by exposure to extremely high noise levels. The U.S. Occupational Safety and Health Administration (OSHA) has specified permissible exposures to certain noise levels. According to OSHA, exposure to high sound pressure levels (SPL) in excess of these limits may result in hearing loss. When using equipment capable of generating high SPL, use hearing protection while such equipment is under operation.
| Hours per day | SPL (dB) | Example |
| 8 | 90 | Small |
| 6 | 92 | Train |
| 4 | 95 | Subway |
| 3 | 97 | High-level |
| 2 | 100 Classical music concert | |
| 1.5 | 102 | Riveting |
| 1 | 105 | Machine |
| 0.5 | 110 | Airport |
| 0.25 or less | 115 Rock concert |
Setup
- Make sure all items listed in the Box Contents are included in the box.
- Read the Safety & Warranty Manual before using the product.
- Make sure that you have completely charged the battery prior to first use for maximum battery life.
- Turn down the Master Volume on Uber FX.
- Power on Uber FX.
- Connect your devices.
-
Switch everything on in the following order:
-
audio input sources (i.e. microphones, instruments, CD/MP3 Players)
Uber FX -
Raise the volume to a comfortable level.
- Return the Master Volume to zero and turn off Uber FX when you are finished.
Example

Items not listed under Introduction > Box Contents are sold separately.
Features
Front Panel

- Combo Inputs with Volume Control: Use a standard 1/4'' (6.35 mm) TRS or XLR cable (not included) to connect your sound source to each input. Use the Volume knob to adjust the level of each one.
- Line/Mic Switch: Use this switch to set the Input to accept either a Line-level or Mic-level sound source.
Note: When using an instrument with passive pickups, set the switch to the Mic setting. When using an instrument with active pickups, set the switch to the Line setting.
- Bluetooth: The Bluetooth LED will be lit when a device is paired to Uber FX. This LED will not be lit when Uber FX is first powered on (unless it was previously paired with a device). Press the Bluetooth button to disconnect a paired Bluetooth device.
- Auxiliary Input with Volume Control: This stereo 1/8" (3.5 mm) input can be used to connect a CD player, MP3 player, or other audio source. The Volume control adjusts auxiliary input and Bluetooth volume.
- Hi EQ (Treble): Adjusts the high (treble) frequencies of the channel.
- Lo EQ (Bass): Adjusts the low (bass) frequencies of the channel.
- Effect Level: Adjusts how much of the internal effect will be applied to the channel.
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Effects Selector: Selects the effect that Uber FX's internal effects processor (powered by Effects by Alesis) will apply to the various channels. Each channel can send different levels of audio to the processor by adjusting their Effect Level knob. See Operation >Effects for an explanation of the available effects.
-
Master Volume Control: This adjusts the loudspeaker's main mix volume, which includes Instrument/Microphone Inputs, Auxiliary Input, and the audio of a paired Bluetooth device.
- Line Out: This 1/4'' (6.35 mm) TRS output can be connected to a stereo auxiliary input or to a mixer using a TRS-to-dual-TS splitter cable (not included). The Line Out is post-Master Volume Control.
- USB Charging Port: Connect your device's charge cable here to charge it. USB charging only functions when the unit's power is turned on.
Note: To charge smartphones and tablets faster, put the device's screen to sleep.
- Power Switch: Use this switch to power the loudspeaker on or off. Make sure all Volume knobs are set to "zero" before powering it on. When the loudspeaker is powered on, the Power LED above it will be lit.
- Charge Indicator: This LED will illuminate when Uber FX is connected to AC power to indicate it is charging. Once charging is complete, the LED will go off.
- Battery Level Indicator: While the unit is powered on, these four lights indicate the power left in the battery. Battery life varies based on volume and usage.
- NFC (Near-Field Communication): Touch and briefly hold your supported and enabled device to the NFC logo to pair the device. See Pairing a Bluetooth Device Using NFC for more information.
Rear Panel
- Power Cable Input: Insert the included power cable here to charge the unit. Please note that when the power cable is connected, the battery will still charge while the unit is in use.
- Fuse: If the unit's fuse needs replacing, lift this tab to access the fuse. Replace it with a fuse with an appropriate rating (printed under the unit's power cable input). Using a fuse with an incorrect rating can damage the unit and/or fuse.

Operation
Pairing a Bluetooth Device
- Turn on your Bluetooth device.
- Turn on Uber FX using the power switch. If you have previously connected to another Bluetooth device, Uber FX will reconnect.
- Navigate to your Bluetooth device's setup screen, find Uber FX and connect.
Note: If your device requires a passcode or PIN, enter 0000.
- The Bluetooth LED will light up solid when it is "paired."
If your Bluetooth device is not able to connect to Uber FX, press the Bluetooth button on Uber FX to break previous Bluetooth connections and reset the Bluetooth module.
- Start playback from your Bluetooth device.
- To disconnect a connected Bluetooth device and connect to another Bluetooth device, press the Bluetooth button. Repeat Step 3.
Note: If you experience trouble connecting or playing music, update your device's OS.
Pairing a Bluetooth Device Using NFC
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 Uber FX:
- In order to use NFC, your device must be turned on and unlocked.
- Enter your device's Settings menu and check that NFC is turned On (one-time step).
- Power on Uber FX.
- Touch and briefly hold your device to the NFC logo located on Uber FX's top panel.
- Follow the pairing instructions that appear on your phone. If a passcode is required, enter "0000".
- To unpair, gently bump your device against the NFC logo.
Using the Aux Input
Connect your smartphone, MP3 player, or similar device to the Aux Input. Adjust the output volume on your source device and then adjust the overall volume using the Aux Input Volume Control on Uber FX.
Effects
To hear the effects on a channel: Turn up the Effects Level for the channel. Use the Effects Selector knob to choose one of the effects below:
Reverb Effects
HALL 1: A large, bright concert hall reverberation effect suitable for vocals and instruments.
HALL 2: A large, warm concert hall reverberation effect suitable for drums, piano and other instruments.
- ROOM 1: A medium-sized, moderately bright reflective room reverberation effect suitable for vocals, lead guitars and other instruments.
- ROOM 2: A small, very reflective bright room reverberation effect suitable for drums and percussion as well as electric guitars and other instruments.
- ROOM 3: A large, warm room reverberation effect suitable for acoustic instruments.
- PLATE 1: A lush, smooth vocal plate reverb with a long decay time and warm tonality.
- PLATE 2: An emulation of vintage plate reverb with bright, slightly tinny tonality and a medium-length decay.
- PLATE 3: A short, bright plate reverb effective for creating subtle spaces.
Modulation Effects
- CHORUS: A complex, 6-voice chorus ensemble effect with short delays often referred to as a "Chorus / Doubler". Discrete stereo signal path. Slow and watery.
- FLANGE: Classic stereo flange: a slow, slightly metallic sweep with a discrete stereo signal path.
- ROTARY: Fast rotary speaker simulator creates the classic, lush Doppler effect of an organ's spinning horn. Effective on guitars, vocals, keyboards and other instruments.
Delay Effects
- DELAY 1: A simple slap-back echo with no feedback particularly effective on vocals and rhythm guitars.
- DELAY 2: Medium-length poly-rhythmic delay with crossover feedback. 3 to 4 ratio between L and R delay times (291 to 388ms) for 3/4 vs. 4/4 feel. Useful for solo instruments where a long, trailing echo effect is desired.
Multi Effects
- CHORUS - ROOM 1: Room reverb into a slow flanging modulation creates a spacey effect.
- CHORUS - ROOM 2: Fast modulation provides a dramatic chorus effect in a small room for a very lush chorus + reverb sound with a discrete stereo signal path.
BYPASS: Bypasses the effects processor – no effects will be heard.
Troubleshooting
If the unit is not charging: Make sure the power cable is properly connected to the power input and the power outlet.
If the sound is distorted: Try lowering the volume control of your sound source, musical instrument, or microphone. Also, try to reduce the overall volume of Uber FX using the Master Volume knob.
If there is too much bass: Try adjusting the tone or EQ control on your sound source to lower the bass level. This will allow you to play the music louder before clipping (distortion) occurs.
If there is a high-pitched whistling noise when using microphones: This is probably feedback. Point the microphone away from the speaker.
If you can't hear the microphone over the music volume: Turn down the music volume from your source.
If you can't hear your instrument: Check the setting of the Line/Mic switch. If you are using an instrument with passive pickups, set the switch to the Mic setting.
If you can't play music from a flash drive: The USB port is only for charging USB devices.
If you cannot connect your audio device to Uber FX via Bluetooth:
- Have your audio device (e.g., smartphone or tablet) and Uber FX as close together as possible while trying to connect. Make sure both the audio device and Uber FX are unobstructed by walls, furniture, etc.
- Reset the Bluetooth connection on Uber FX to disconnect Uber FX from any other audio device and restart the search process. If this does not work right away, power off Uber FX and then power it back on. See Pairing a Bluetooth Device Using NFC for more information.
- Reset the Bluetooth connection on your audio device by turning Bluetooth off and back on. You can find this under the Bluetooth menu in the Settings for your phone or other audio device.
If this does not work, and you have connected to Uber FX before, find Uber FX in the list of available or previously connected devices in your audio device's Bluetooth menu, tap the "gear" or "i" icon located next to it and then select Unpair or Forget. Turn Uber FX off and back on and try pairing again once it reappears in your available devices list.
Note: If Uber FX has been paired to another audio device recently that is still within range, you may need to repeat this process with that audio device to fully disconnect.
Technical Specifications
| Output Power | 100 W (peak) |
| Drivers | Low-Frequency: 8.0" / 203 mm woofer High-Frequency: 3.0" / 76 mm tweeter |
| Frequency Response | 60 Hz - 17 kHz (±3 dB) |
| Connectors | (2) Line/Mic channels with XLR-1/4" (6.35 mm) TRS combination input (1) 1/8" (3.5 mm) TRS/stereo Aux input (1) 1/4" (6.35 mm) Line-Out (1) IEC AC power connection with Mains Fuse |
| Charge Port (1) USB +5 V, 1 A | |
| Controls | (2) Volume controls for Line/Mic channels (2) Line/Mic selectors (2) Treble EQ controls (+/- 12 dB @ 10 kHz) for Line/Mic channels (2) Bass EQ controls (+/- 12 dB @ 100 Hz) for Line/Mic channels (1) Effect Selector (2) Effect Level controls for Line/Mic channels (1) Volume control for Bluetooth and Aux channels (1) Master Volume (1) Bluetooth pairing button (1) Power on/off switch |
| Indicators Power On, battery level, Bluetooth pairing status | |
| Bluetooth Specifications | Version: 4.2 Maximum Transmission Power: Class 2, 4 dBm Frequency: 2.4-2.480 GHz Profile: A2DP, AVRCP Range: Up to 100 feet / 30.5 meters Connection: Manual pairing or NFC |
| Battery | Type: 12 V, 7.0 Ah SLA Life: Up to 45 hours Charging: 12 hours |
| Power Connection: IEC | Voltage: 100-240 VAC, 50/60 Hz Fuse: T2AL AC250V |
| Dimensions (length x width x depth) | 18.1" x 18.3" x 11.0" / 459 x 464 x 278 mm |
| Weight | 24.7 lbs. / 11.2 kg |
Specifications are subject to change without notice.
Bluetooth and wireless reception and range are affected by walls, obstructions, and movement. For optimal performance, place the product in the center of the room so it is unobstructed by walls, furniture, etc. Battery life may vary based on temperature, age, and volume usage of product.
Trademarks & Licenses
Alto Professional is a trademark of inMusic Brands, Inc., registered in the U.S. and other countries.
The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by Alto Professional is under license.
Alesis is a trademark of inMusic Brands, Inc., registered in the U.S. and other countries.
All other product names, company names, trademarks, or trade names are those of their respective owners.
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