1. Introduction
The Soundcraft Signature 12 is a high-performance 12-input small format analog mixer designed for professional audio applications. It integrates Soundcraft's renowned Ghost mic preamps, Sapphire British EQ, and a Lexicon effects engine, along with Dbx Limiters on input channels. This mixer offers exceptional audio quality and robust construction, making it suitable for live sound, studio recording, and various other audio mixing tasks.
2. Important Safety Information
- Read these instructions thoroughly before operating the unit.
- Keep these instructions for future reference.
- Heed all warnings on the product and in the operating instructions.
- Follow all instructions.
- Do not use this apparatus near water.
- Clean only with a dry cloth.
- Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. 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.
- Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
- Only use attachments/accessories specified by the manufacturer.
- Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
- Unplug this apparatus during lightning storms or when unused for long periods of time.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
3. Package Contents
Please check that all items listed below are included in your package:
- Soundcraft Signature 12 Analog Mixer
- Power Supply Unit
- USB Cable
- Quick Start Guide
- Warranty Information Card
4. Product Overview
The Soundcraft Signature 12 mixer combines high-quality analog circuitry with powerful digital effects and processing. Key features include:
- Iconic Soundcraft Ghost Mic Preamps: Ultra-low noise performance for pristine audio capture.
- Renowned Soundcraft Sapphire British EQ: Sweepable mid-bands per channel for precise tonal shaping.
- Lexicon Effects Engine: Award-winning reverbs, delays, choruses, and modulations for professional sound enhancement.
- Dbx Limiters: High-ratio compressors on input channels to prevent clipping and maintain dynamic control.
- GB Series Audio Routing: Flexible pre/post switching on each AUX, and subgroups with powerful routing and switching options.
- Integrated USB Audio Interface: For multi-track recording and playback.
Figure 4.1: Front view of the Soundcraft Signature 12 Analog Mixer, showing faders, knobs, and input/output sections.
Figure 4.2: Top panel of the Soundcraft Signature 12, highlighting the channel strips, EQ section, and effects controls.
Figure 4.3: Rear panel of the Soundcraft Signature 12, displaying various input and output connectors, including XLR, TRS, and USB ports.
5. Setup Guide
5.1 Power Connection
Connect the provided power supply unit to the mixer's power input and then to a suitable AC power outlet. Ensure the power switch on the mixer is in the OFF position before connecting power.
5.2 Input Connections
The Signature 12 features multiple input types:
- Microphone Inputs (XLR): Connect microphones to the XLR inputs. Phantom power (+48V) can be activated for condenser microphones.
- Line Inputs (TRS): Connect line-level sources such as keyboards, drum machines, or other audio devices using 1/4-inch TRS cables.
- Instrument Inputs (Hi-Z): Channels 1 and 2 feature switchable Hi-Z inputs for direct connection of guitars or basses without an external DI box.
5.3 Output Connections
Connect your main speakers, monitors, or recording devices to the appropriate outputs:
- Main Outputs (XLR): For connecting to your main PA system or studio monitors.
- AUX Sends (TRS): For connecting to stage monitors, external effects processors, or headphone amplifiers.
- Subgroup Outputs (TRS): For routing groups of channels to external devices or for more flexible mixing.
- Headphone Output (TRS): For monitoring your mix.
5.4 USB Connectivity
Connect the mixer to your computer using the provided USB cable for multi-track recording and playback. Ensure you install the necessary drivers (if required) from the Soundcraft website.
Video 5.1: An overview of the Soundcraft Signature and UI series mixers, demonstrating key features and connectivity. This video provides a general introduction to the product line's capabilities.
6. Operating Instructions
6.1 Channel Strip Controls
Each input channel on the Signature 12 features a comprehensive set of controls:
- Gain Control: Adjusts the input sensitivity for microphones and line-level sources. Set this to achieve a healthy signal level without clipping.
- Phantom Power (+48V): Activates phantom power for condenser microphones.
- High-Pass Filter (HPF): Removes unwanted low-frequency rumble.
- Equalizer (EQ): Three-band EQ with sweepable mid-range for precise tone shaping.
- AUX Sends: Controls the amount of signal sent to auxiliary outputs for monitors or effects.
- Pan Control: Positions the channel's signal in the stereo field (left to right).
- Mute Button: Silences the channel.
- PFL (Pre-Fader Listen) Button: Sends the channel's signal to the headphones for solo monitoring before the fader.
- Channel Fader: Controls the volume level of the channel in the main mix.
Figure 6.1: A close-up of a single channel strip on the Soundcraft Signature 12, showing the gain, EQ, AUX, pan, mute, PFL, and fader controls.
6.2 Lexicon Effects Engine
The integrated Lexicon effects engine provides a variety of high-quality effects. Use the dedicated controls in the master section to select and adjust effect parameters. Each channel has an FX send control to route signal to the effects processor.
6.3 Dbx Limiters
Dbx Limiters are available on select input channels to prevent signal peaks from exceeding a set threshold, protecting your system from clipping and ensuring a consistent dynamic range. Activate and adjust these as needed for instruments or vocals with wide dynamic swings.
6.4 Master Section
The master section includes controls for the main mix, AUX masters, subgroup masters, and headphone level. Monitor your overall mix using the main stereo meters.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the surface of the mixer. Avoid abrasive cleaners or solvents.
- Ventilation: Ensure proper ventilation around the mixer to prevent overheating. Do not block air vents.
- Storage: When not in use, store the mixer in a cool, dry place, away from direct sunlight and extreme temperatures.
- Cable Management: Keep cables organized and free from kinks or excessive tension to prevent damage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output | Power off, cables disconnected, faders down, mute engaged. | Check power, ensure all cables are securely connected, raise faders, disengage mute buttons. |
| Distorted audio | Input gain too high, output level too high, faulty cable. | Reduce input gain, lower output levels, check and replace cables if necessary. |
| No phantom power | Phantom power not activated, faulty microphone. | Ensure +48V button is engaged for the specific channel. Test with another condenser microphone. |
| USB recording issues | Incorrect driver installation, DAW settings, USB cable issue. | Reinstall drivers, verify audio interface settings in your DAW, try a different USB cable. |
9. Specifications
| Feature | Detail |
|---|---|
| Number of Channels | 12 |
| Item Weight | 15.3 Pounds (6.94 kg) |
| Product Dimensions | 19.29 x 17.91 x 8.27 inches (49 x 45.5 x 21 cm) |
| Hardware Interface | USB |
| Power Source | Corded Electric |
| Voltage | 100V |
| Brand | Soundcraft |
| Model Number | Signature 12 |
10. Warranty Information
Soundcraft products are designed for reliability and performance. This product is covered by a limited warranty against defects in materials and workmanship. The specific terms and duration of the warranty may vary by region. Please refer to the warranty card included with your product or visit the official Soundcraft website for detailed warranty information and registration procedures. Keep your proof of purchase for warranty claims.
11. Customer Support
For technical assistance, troubleshooting, or service inquiries, please contact Soundcraft customer support. You can find contact information, FAQs, and additional resources on the official Soundcraft website:
Website: www.soundcraft.com
Before contacting support, please have your product model number (Signature 12) and serial number ready.