Alto Professional Live 1604 | 16-Channel / 4-Bus Mixer with 10 XLR inputs

The Alto Professional Live 1604 is a pro 16-channel, 4-bus mixer equipped with the tools you need to create the perfect mix. With flexible routing options and a multitude of onboard DSP tools, Live 1604 fits the demands of nearly any live performance environment.

It features 10 balanced XLR inputs with switchable phantom power, 3-band EQs with sweepable mids for additional tonal shaping, four aux sends per-channel for external effects and monitoring, and a 9-band graphic EQ for main or monitor outputs. A headphone jack with an independent level control enables additional monitoring and mixing. 60mm faders with LED meters provide precise control and visual feedback for accurate, hands-on mixing.

With its diverse connectivity options, Live 1604 can handle any sized event from small coffee house gigs to mid-sized ensembles to full-stage rock bands.

 

Frequently Asked Questions

 

Can I use an Alto Live mixer to record into my computer?

Yes! Every Alto Live mixer has a USB connection that carries 2 channels of audio from the MAIN output channel of the mixer to your computer. The USB connection also allows you to send audio from your computer back to the last channel of the mixer. 

 

What is the ratio of the built-in compressor?

The built-in compressor is a 3:1 fixed ratio.

 

How is the built-in compressor controlled?

The COMP knob controls both the threshold and makeup gain for the compressor. 

 

If I want to use an Alto Live series mixer in another country do I need a new power supply?

All Alto Live mixers have an auto-switching power supply built in. As long as you have the proper IEC power cable for the current you intend to use, the mixer will function.

 

How come my tablet or smartphone isn't charging when I plug it into USB port on top of my Alto Live mixer?

The USB power outlet on the top of all Alto Live mixers is a 5V 1A power supply and may charge your personal devices slower than a proper outlet. To optimize the charging speed of your device, try lowering your screen brightness and closing unused applications. 

 

Why can't I hear any audio from the headphone output?

Alto Live mixers allow you to send the main mix to either the CTRL OUT or PHONES output, but not to both at the same time. If you do not hear any signal coming out of your headphones, make sure that MAIN OUT is selected by depressing the button above the headphone volume knob.

 

What is the DFX BYPASS jack for?

This input allows you to use a standard 1/4"" latching-style footswitch to toggle the mixer's internal effects processor. 

 

What does the green SIG light indicate?

When the green SIG light blinks on a channel, it means that a level of 2dBU has been reached. For optimum performance, try to only have this illuminate at your signals highest peaks. 

 

At what level does the red clipping light illuminate?

The red clipping light will illuminate when your signal has reached +20dBU. 

 

Further Technical Support

Whether you are a customer or dealer, if you already own a 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: www.altoproaudio.com

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

• altoproaudio.com/support 

 

Technical Specs

Mono Input Channels

• Microphone inputs: Electronically balanced, discrete input configuration
• Frequency response: 20 Hz to 20 kHz, +0.5 dB
• THD+N: <0.005% at 0 dBu, 1 kHz
• Gain range: 0 dB to 50 dB (Mic)
• SNR: 90 dB

Line Inputs

• Electronically balanced
• Frequency response: 20 Hz to 20 kHz, +0.5 dB
• THD+N: <0.03% at 0 dBu, 1 kHz
• Sensitivity range: -15 dBu to 30 dBu

Impedances

• Microphone inputs: 51.1 K„¦
• Channel insert return: 200 K„¦
• All other inputs: >100 K„¦
• 2-Track outputs: 10 K„¦
• All other outputs: 20 K„¦

Equalization

• Mono Channels
  
  
  • High-shelving: ±15 dB @ 12 kHz
  • Mid-bell (mono): ±15 dB sweep able from 100 Hz --- 8 KHz
  • Low-shelving: ±15 dB @ 80 Hz
• Stereo Channels
  
  
  • High-shelving: ±15 dB @ 12 kHz
  • High-Mid-bell (mono): ±15 dB @ 3 KHz
  • Low-Mid-bell (mono): ±15 dB @ 500 Hz
  • Low-shelving: ±15 dB @ 80 Hz
• Main EQ:
  • 9 EQ bands (63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz, 16 kHz), ±15 dB

DSP Section (DFX)

• A/D & D/A converters: 24-bit
• DSP Resolution: 24-bit
• Effects: 10 DSP effects families with 10 variations available per family
• Presets: 100 total
• Controls: Rotary encoder to select preset, DSP mute switch, peak LED indicator

Main Mix

• Noise (bus noise):
  • Fader 0 dB, channels muted: -84 dBr (ref: +4 dBu)
  • Fader 0 dB, all input channels assigned & set to unity gain: -73 dBr (ref: +4 dBu)
• Phantom Power: Mic Pin2/Pin3 and Pin1 48±2V

Power Supply

• Main voltage: 100-120 VAC ~60 Hz
• Power consumption: 35 W
• Fuse: 1.25 A
• Main connection: Standard IEC receptacle

Dimensions (width x depth x height):

• 4€ x 16.4€ x 3.1€

Weight

• 1 lbs