To Next PageTo Next PageWhat to do if my Alto BLACK 15 SUB has no sound?
If your Alto Subwoofer isn't producing any sound, begin by verifying that the power plug is correctly connected. Next, ensure the function switches are in the correct positions and that the volume knob is turned up. Also, check the mixer volume and confirm all signal lines are working correctly. If necessary, try using different signal lines to rule out a faulty cable.
How to fix an Alto BLACK 15 SUB that won't turn on?
If your Alto Subwoofer isn't turning on, first ensure the power cable is securely connected to both the speaker and the power outlet. Then, verify that the power switch is set to the “ON” position. Also, check the wiring to confirm it is proper and complete and make sure that all function switches are in the correct positions.
Why is my Alto BLACK 15 SUB producing distorted audio?
If you're experiencing audio distortion with your Alto Subwoofer, start by checking that the DSP Mode switch is in the correct position. Also, ensure that the connected sound sources are outputting sound properly; try testing with different sound sources. Finally, verify that the volume knob is adjusted to an appropriate level.
What to do if my Alto Subwoofer Bluetooth keeps disconnecting?
If your Alto Subwoofer's Bluetooth keeps disconnecting, first ensure that the Bluetooth switch is turned on and that the Bluetooth LED is in search mode. Then, check that the Bluetooth switch on your Apple device is also turned on and in search mode. If the subwoofer is found, verify that the device pairing is successful.
How to increase the low sound on my Alto BLACK 15 SUB Subwoofer?
If you're experiencing low sound on your Alto Subwoofer, start by checking if the connected signal lines are working correctly and try different signal lines if possible. Also, verify that the connected sound sources are working properly, and test with different sources. Ensure the volume knob is adjusted to the correct position and that the DSP mode is set appropriately.
What to do if the Alto Subwoofer app is not responding?
If the Alto Subwoofer app is not responding, first verify that the Bluetooth software is successfully installed on your Apple device and that the Apple device is successfully paired with the machine. If pairing is successful, try turning off, restarting, and reconnecting the machine. If the issue persists, turn off, restart, and reconnect the software. As a last resort, power off and restart your Apple device, then reconnect and pair it again.
Why can't I update my Alto Subwoofer?
If you're having trouble updating your Alto Subwoofer, check that the Bluetooth function is turned on and that Bluetooth pairing is successful. Also, verify that the update software is the correct version.
Details power source, consumption, output power, and frequency response.
Outlines impedance, power handling, sensitivity, frequency, and dimensions.
Illustrates the functional blocks of the amplifier circuit.
Shows signal processing, control unit, and interface circuitry.
Guides on power, audio signal, and wireless connection faults.
Covers application control and software update failures.
Detailed circuit diagram for the power amplifier stage.
Shows the audio mute functionality circuit diagram.
Circuit details for the Digital Signal Processor unit.
Circuitry for the Microcontroller and wireless module.
Circuit diagram for the input filtering stage.
Circuit details for the general-purpose interface section.
Depicts the AC input EMI filtering and protection circuit.
Detailed circuit for the main power output stage.
Circuit for the Power Factor Correction control.
Circuit for generating bias voltages.
Circuit diagram for the main control unit.
Circuitry for auxiliary power rails.
Circuit for monitoring power supply status.
Detailed circuit for the second power output stage.
Illustrates the physical breakdown of the entire unit.
Shows the breakdown of the power amplifier section.
Details the components of the woofer unit.
Lists all mechanical components, quantities, and remarks.
Lists components specific to the power amplifier section.
Lists components for the woofer assembly.
Shows the physical layout of the Preamp DSP board.
Physical layout of the input/output interface board.
Physical layout of the mute control board.
Physical layout of the amplifier circuit board.
Physical layout of the 5573A power supply board.
Physical layout of the 5573B power supply board.
Physical layout of the EMI filter board.
Physical layout of the DC filter board.
Physical layout of the logo indicator board.
General
