1. Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your Mackie 1604-VLZ3 16-Channel Compact Mixer. Please read this manual thoroughly before operating the device to ensure proper functionality and to maximize its performance.
2. Key Features
The Mackie 1604-VLZ3 mixer is designed for professional audio applications, offering a robust set of features for live sound, project studios, and recording environments. Key features include:
- Ultra-low noise VLZ3 design with high headroom.
- 16 studio-grade XDR2 Extended Dynamic Range microphone preamps with a 60dB gain range and 130dB dynamic range.
- Support for +22dBu line input handling.
- Extended low frequency response and distortion under 0.0007% (20Hz - 20kHz).
- Phantom power for condenser microphones.
- 16 high-headroom line inputs and 16 channel inserts.
- Advanced DC pulse transformer RF rejection.
- 60mm long-wearing logarithmic-taper faders.
- 4 Aux sends, with level, pan, -20dB/Solo, and Overload/Mute LEDs on each channel.
- 4 stereo Aux returns, 8 Direct outs, and 4 Group/Bus outputs.
- 3-band Active EQ with sweepable midrange (100Hz to 8kHz, +/-15dB).
- 18dB/octave 75Hz Lo-Cut filter.
- Control Room/Phones multi-input source matrix.
- Balanced 1/4" inputs and outputs (excluding inserts).
- Rack-mountable design with three physical configurations via rotating I/O pod.
- Sealed rotary controls for resistance against dust and grime.
- Multi-Voltage power supply for global use.
- Rugged steel chassis construction.
3. Setup
Proper setup is crucial for optimal performance of your Mackie 1604-VLZ3 mixer. Follow these steps for initial configuration.
3.1 Unpacking and Inspection
Carefully remove the mixer from its packaging. Inspect the unit for any signs of damage that may have occurred during shipping. Retain the packaging for future transport or storage.
3.2 Power Connection
Connect the provided power cable to the mixer's AC inlet and then to a suitable power outlet. The 1604-VLZ3 features a multi-voltage power supply, allowing for worldwide use without voltage selection.
3.3 Physical Configuration (Rotopod Option)
The 1604-VLZ3 includes a Rotopod feature, allowing the rear I/O patchbay to be rotated for different setups:
- Desktop Use: The patchbay can face upwards or outwards (standard configuration).
- Rackmount Installations: The Rotopod facilitates accessing the patchbay from either the front or rear of a rack. Refer to the Rotopod installation guide for detailed instructions on changing the orientation.
Figure 3.1: Front-top view of the Mackie 1604-VLZ3 mixer, showing the main control surface.
Figure 3.2: Rear panel of the Mackie 1604-VLZ3, displaying various input and output connections including XLR, TRS, and RCA ports.
3.4 Audio Connections
Connect your microphones, instruments, and other audio sources to the appropriate input channels. Use balanced XLR cables for microphones and balanced/unbalanced 1/4" TRS cables for line-level inputs. Connect your main outputs to amplifiers, powered speakers, or recording devices.
- Microphone Inputs (XLR): Channels 1-16 feature XLR inputs for microphones.
- Line Inputs (1/4" TRS): Channels 1-16 also have 1/4" TRS line inputs.
- Main Outputs (XLR/TRS): Connect to your main sound system.
- Aux Sends/Returns: For external effects processors or monitor mixes.
- Direct Outs: Channels 1-8 feature direct outputs for multi-track recording.
4. Operating Instructions
This section details the operation of the Mackie 1604-VLZ3 mixer's various controls and features.
4.1 Channel Strip Controls
Figure 4.1: Close-up of the Mackie 1604-VLZ3 control surface, highlighting individual channel controls and the master section.
- Gain Control: Adjusts the input sensitivity for microphones and line-level signals. Use the OL (overload) LED to set the gain appropriately, ensuring it flashes only on the loudest peaks.
- Lo-Cut Filter: Activates an 18dB/octave 75Hz high-pass filter to remove unwanted low-frequency rumble.
- Equalization (EQ): Each channel features a 3-band active EQ.
- High (12kHz): Adjusts high frequencies.
- Mid (Sweepable 100Hz-8kHz): Allows precise frequency selection and adjustment in the midrange.
- Low (80Hz): Adjusts low frequencies.
- Aux Sends: Controls the level of the channel signal sent to the four auxiliary outputs, typically used for monitor mixes or external effects.
- Pan Control: Positions the channel signal within the stereo field (left to right).
- Mute/Solo: The Mute button silences the channel. The Solo button isolates the channel for monitoring through headphones or control room outputs.
- Fader: Controls the output level of the individual channel.
4.2 XDR2 Mic Preamps
The 1604-VLZ3 incorporates XDR2 (Extended Dynamic Range) second-generation microphone preamps. These preamps are designed for low noise and high headroom, accommodating a wide range of input levels from quiet whispers to loud signals without significant coloration. They provide 60dB of available gain per channel and can handle line-level signals up to +22dBu.
4.3 Split-Monitoring Configuration
For multi-track recording, the 1604-VLZ3 supports a split-monitoring workflow:
- Connect your sound sources (e.g., microphones, drums) to the first eight channels (1-8).
- Patch the DIRECT OUT jacks of channels 1-8 to the corresponding inputs of your multi-track recorder (e.g., Direct Out 1 to multi-track input 1).
- The signals from channels 1-8 will be sent to the multi-track recorder for recording or direct pass-through.
- Connect the outputs of your multi-track recorder to the LINE inputs of channels 9-16 on the 1604-VLZ3 (e.g., multi-track out 1 to Line Input 9).
- Channels 9-16 will then be used to monitor the recorded tracks and route them to the mixer's output section for mixdown, control room monitoring, or headphones.
4.4 Master Section
The master section provides overall control for the mixer's outputs and monitoring.
- Main Mix Faders: Control the overall level of the stereo main output.
- Aux Master Section: Controls the overall level of the auxiliary sends and returns.
- Control Room/Phones Matrix: Selects the source for monitoring through headphones and control room outputs.
- Headphone Amplifier: Provides a high-volume output for monitoring.
5. Maintenance
Regular maintenance ensures the longevity and reliable operation of your Mackie 1604-VLZ3 mixer.
- Cleaning: Use a soft, dry cloth to clean the exterior of the mixer. Avoid abrasive cleaners or solvents. For stubborn grime, a slightly damp cloth can be used, ensuring no liquid enters the controls or openings.
- Dust Protection: Keep the mixer covered when not in use to prevent dust accumulation, especially on faders and rotary controls. The sealed rotary controls offer some resistance to dust and grime.
- Environmental Conditions: Operate the mixer in a dry, temperature-controlled environment. Avoid extreme temperatures, humidity, and direct sunlight.
- Cable Management: Ensure all cables are neatly organized and not under strain to prevent damage to connectors and internal wiring.
- Physical Handling: The mixer features a rugged steel chassis. However, avoid dropping or subjecting the unit to severe impacts.
6. Troubleshooting
This section addresses common issues you might encounter with your Mackie 1604-VLZ3 mixer. If you experience problems not covered here, please contact Mackie technical support.
6.1 No Sound Output
- Check Power: Ensure the mixer is powered on and the power cable is securely connected.
- Master Faders: Verify that the main mix faders are raised.
- Channel Faders/Mute: Ensure individual channel faders are up and the Mute buttons are disengaged.
- Input Source: Confirm that an audio source is connected and active.
- Output Connections: Check that the main outputs are correctly connected to your amplifier or powered speakers and that those devices are powered on and functioning.
- Control Room/Phones: If monitoring through headphones, ensure the correct source is selected in the Control Room/Phones matrix.
6.2 Distorted Audio
- Gain Settings: Reduce the input gain (trim) on the offending channel. The OL (overload) LED should only flash occasionally on the loudest peaks.
- Output Levels: Ensure that the main mix faders and any subgroup faders are not set too high, causing clipping at the output stage.
- External Devices: Check the input levels of any connected external effects processors or recording devices.
6.3 Hum or Noise
- Ground Loops: Ensure all audio equipment is connected to the same electrical ground. Use balanced cables where possible.
- Cable Quality: Inspect audio cables for damage or poor shielding.
- RF Interference: Keep audio cables away from power cables and other sources of electromagnetic interference. The mixer features advanced DC pulse transformer RF rejection.
- Phantom Power: Ensure phantom power is only engaged for condenser microphones that require it.
7. Specifications
Below are the technical specifications for the Mackie 1604-VLZ3 16-Channel Compact Mixer.
| Feature | Specification |
|---|---|
| Brand | Mackie |
| Model Name | 1604-VLZ3 |
| Controls Type | Push Button, Rotary Faders |
| Microphone Preamps | 16 x XDR2 (Extended Dynamic Range) |
| Gain Range | 60dB (Mic Preamps) |
| Dynamic Range | 130dB (Mic Preamps) |
| THD (Mic Pre) | Under 0.0007% (20Hz - 20kHz) |
| Total Mixer THD | Less than 0.0025% |
| Line Input Handling | Up to +22dBu |
| Equalization | 3-band Active EQ with sweepable midrange (100Hz-8kHz) |
| Lo-Cut Filter | 18dB/octave 75Hz |
| Aux Sends | 4 |
| Aux Returns | 4 Stereo |
| Direct Outs | 8 |
| Group/Bus Outputs | 4 |
| Material Type | Metal (Rugged Steel Chassis) |
| Product Dimensions | 22 x 8 x 21 inches |
| Item Weight | 29 pounds |
| UPC | 663961015393, 663961009903, 663961001426 |
8. Warranty Information
Mackie products are designed for durability and reliability. For detailed warranty terms and conditions, please refer to the warranty card included with your product or visit the official Mackie website. Keep your proof of purchase for warranty claims.
9. Support and Contact
If you require further assistance, technical support, or have questions regarding your Mackie 1604-VLZ3 mixer, please contact Mackie customer service or visit the official Mackie support website:
- Mackie Official Website: www.mackie.com
- Refer to the website for contact information, FAQs, and additional resources.
