Indledning
The Alto Professional Live 1604 is a professional 16-channel, 4-bus mixer designed to provide comprehensive audio control for live performance environments. This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your Live 1604 mixer, ensuring optimal performance and longevity.
Vigtige sikkerhedsoplysninger
- Strømkilde: Connect the unit only to an AC power outlet of the type specified in this manual or marked on the unit.
- Jording: Do not defeat the safety purpose of the polarized or grounding-type plug. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
- Vand og fugt: Do not use this apparatus near water. Do not expose the apparatus to dripping or splashing and ensure that no objects filled with liquids, such as vases, are placed on the apparatus.
- Varme: Må ikke installeres i nærheden af varmekilder såsom radiatorer, varmeapparater, komfurer eller andre apparater (inklusive ampløftere), der producerer varme.
- Rensning: Rengør kun med en tør klud.
- Service: Overlad al service til kvalificeret servicepersonale. Service er påkrævet, når apparatet er blevet beskadiget på nogen måde, såsom strømforsyningsledning eller stik er beskadiget, væske er blevet spildt, eller genstande er faldet ind i apparatet, apparatet har været udsat for regn eller fugt, ikke fungerer normalt , eller er blevet droppet.
Opsætning
1. Udpakning og placering
Carefully unpack your Alto Professional Live 1604 mixer. Ensure all components are present and undamaged. Place the mixer on a stable, flat surface, allowing adequate ventilation around the unit.
2. Strømtilslutning
Connect the supplied power cable to the AC input on the rear panel of the mixer and then to a suitable power outlet. Ensure the power switch is in the OFF position before connecting.

Billede: Rear panel of the Alto Professional Live 1604 mixer, highlighting the power input, main outputs, and various auxiliary connections.
3. Indgangsforbindelser
The Live 1604 features 10 balanced XLR inputs for microphones and 16 line-level inputs (8 mono, 4 stereo pairs) for instruments and other audio devices. Each microphone input includes switchable phantom power for condenser microphones.
- Mikrofoner: Connect microphones to the XLR inputs (Channels 1-10). Activate phantom power using the global switch if required for condenser microphones.
- Linjeniveau-enheder: Connect instruments, keyboards, or other audio sources to the 1/4-inch TRS/TS line inputs. Stereo sources can be connected to channels 9/10, 11/12, 13/14, and 15/16.
- USB -lyd: Connect a USB cable from the mixer's USB port to your computer for stereo audio input/output.

Billede: Top view of the Alto Professional Live 1604 mixer, displaying the full layout of input channels, faders, and master controls.
4. Udgangsforbindelser
- Hovedudgange: Connect your main PA system or recording interface to the Main Mix Outputs (XLR or 1/4-inch TRS).
- Aux-sender: Use the four Aux Sends to connect to external effects processors or monitor systems.
- Subgroups: Utilize the four Subgroup Outputs for routing multiple channels to a single output, useful for managing groups of instruments or vocals.
- Hovedtelefoner: Connect headphones to the 1/4-inch headphone jack for independent monitoring.
Betjeningsvejledning
1. Channel Strip Controls (Channels 1-16)

Billede: Detaljeret view of individual channel strips on the Alto Professional Live 1604 mixer, illustrating the gain, equalization, and auxiliary send controls.
- Gevinst: Justerer indgangsfølsomheden for hver kanal. Indstil denne for at opnå et stærkt signal uden clipping (indikeret af PEAK LED'en).
- Compression (Channels 1-6): Controls the dynamic range of the input signal, reducing loud peaks and boosting quieter parts.
- Lavt snit: Engages a high-pass filter at 75 Hz to remove unwanted low-frequency rumble.
- EQ (udligning):
- Høj: Adjusts frequencies above 12 kHz.
- Mid: Adjusts frequencies around 100 Hz to 8 kHz (sweepable on mono channels).
- Lav: Adjusts frequencies below 80 Hz.
- Aux-sender: Controls the amount of signal sent from the channel to the four auxiliary outputs. Aux 1 & 2 can be switched between pre-fader (for monitors) and post-fader (for effects).
- Pan/Balance: Placerer kanalens signal inden for stereofeltet (venstre mod højre).
- Stum: Silences the channel's output to the main mix and subgroups.
- Solo: Isolates the channel's signal for monitoring through headphones or control room outputs without affecting the main mix.
- Sub 1-4: Routes the channel's signal to the selected subgroup(s).
- Main L-R: Routes the channel's signal directly to the main stereo mix.
- Kanal fader: Controls the overall volume level of the channel in the mix.
2. Main Section Controls

Billede: Detaljeret view of the master section of the Alto Professional Live 1604 mixer, including the graphic equalizer, Alesis DSP effects, and main output faders.
- Grafisk EQ: A 9-band graphic equalizer for fine-tuning the overall frequency response of the main or monitor outputs.
- Alesis DSP Effects: Access 100 high-quality Alesis digital effects, including delays, reverbs, chorus, and flangers. Use the Program knob to select an effect and the DFX to Aux/Main controls to send the effect to the desired output.
- Subgroup Faders: Control the master volume of each of the four subgroups.
- Main Mix Fader: Styrer den samlede udgangsvolumen for stereo main mix.
- Hovedtelefon niveau: Justerer lydstyrken for hovedtelefonudgangen.
3. Officiel produktvideo
Video: En embedsmand overview of the Alto Professional LIVE Series Mixers, demonstrating key features and applications. This video is provided by InMusic, the manufacturer of Alto Professional products.
Opretholdelse
- Rensning: Regularly wipe the mixer's surface with a soft, dry cloth. Avoid using abrasive cleaners or solvents. For stubborn dirt, a slightly damp cloth can be used, followed by a dry cloth. Ensure no liquids enter the controls or openings.
- Støvbeskyttelse: When not in use, cover the mixer with a dust cover to prevent dust and debris from accumulating in faders and knobs, which can affect performance and longevity.
- Opbevaring: Store the mixer in a cool, dry environment away from direct sunlight and extreme temperatures. If transporting, use a protective case.
Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Ingen lydudgang |
|
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| Brummen eller støj i lyden |
|
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| Forvrænget lyd |
|
|
| Effekter virker ikke |
|
|
Specifikationer
| Feature | Detalje |
|---|---|
| Mærke | Alt professionel |
| Model | Live 1604 |
| Antal kanaler | 16 |
| Varens vægt | 13.1 pund |
| Forbindelsesteknologi | Aux, XLR, USB |
| Strømkilde | Elektrisk med ledning |
| Frekvensrespons | 20 Hz - 20 kHz (typisk) |
| Lydindgang | XLR, 1/4-inch TRS/TS |
| Voltage | 240 Volts (check local power requirements) |
| Fabrikant | inMusic Brands Inc. |
| GTIN / UPC | 644535662298, 816311011044 |
Garantioplysninger
The Alto Professional Live 1604 mixer comes with a 1-year parts & labor warranty. Please retain your proof of purchase for warranty claims. For detailed terms and conditions, refer to the warranty card included with your product or visit the official Alto Professional webwebsted.
Kundesupport
For technical assistance, product registration, or further information, please visit the official Alto Professional website kl www.altoproaudio.com. You can find FAQs, software downloads, and contact information for support services.