Behringer Model 15 Analog Semi-Modular Synthesizer User Manual

1. Introduction

The Behringer Model 15 Analog Semi-Modular Synthesizer is a faithful reproduction of the iconic 'Model 15' modular synthesizer, designed to provide superior sound quality and versatility. This instrument features Dual Voltage Controlled Oscillators (VCOs), a Voltage Controlled Filter (VCF), a sequencer, and an arpeggiator, all within a compact Eurorack format. Its semi-modular design allows for immediate performance without extensive patching, while also offering deep sound design possibilities through its 48 patch points and 37 direct access controls. This manual provides essential information for the safe and effective use of your Model 15 synthesizer.

2. Important Safety Instructions

• Read these instructions thoroughly before operating the device.
• Keep these instructions for future reference.
• Heed all warnings and 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.
• 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.
• 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. Product Overview

The Behringer Model 15 is an analog semi-modular synthesizer designed for extensive sound creation. It features a comprehensive control panel and versatile connectivity options.

3.1 Front Panel Controls

This image displays the top-down view of the Behringer Model 15's control panel. It highlights the various knobs, switches, and patch points that allow for detailed sound shaping. Key sections visible include the Arp/Seq, Low Frequency OSC, OSC 1 & 2, Mixer, Utilities, Filter, Envelope, Control, Inputs, and Outputs sections. The layout is designed for intuitive access to all parameters.

• Dual VCOs: Two Voltage Controlled Oscillators with 4 waveforms, sync, PWM, and sub-oscillator for rich, complex sounds.
• 24 dB Ladder Filter: Provides classic, warm, and punchy analog sound with resonance control.
• Sequencer: Advanced step sequencer with 3x256-step memory and key transpose.
• Arpeggiator: For creating dynamic melodic patterns.
• Patch Points: 48 patch points for extensive modular connectivity and sound routing.
• Direct Access Controls: 37 dedicated controls for real-time manipulation of parameters.

3.2 Rear Panel Connections

This image shows the rear panel of the Behringer Model 15 synthesizer, detailing its various input and output connections. Visible ports include Audio Out, Phones (headphone output), MIDI In/Out/Thru, and the DC Input for power. There are also DIP switches for MIDI channel selection. This panel is crucial for integrating the synthesizer into an existing studio setup.

• Audio Out: Main audio output for connecting to mixers or audio interfaces.
• Phones: 3.5mm (1/8") jack for headphone monitoring.
• MIDI In/Out/Thru: Standard MIDI connections for integration with other MIDI devices.
• DC Input: For connecting the external power supply.

4. Setup

4.1 Unpacking

Carefully remove the Model 15 from its packaging. Retain all packaging materials for future transport or storage. Inspect the unit for any signs of damage. If damage is found, contact your dealer immediately.

4.2 Power Connection

1. Ensure the Model 15 is switched off.
2. Connect the provided DC power adapter to the 'DC Input' on the rear panel.
3. Plug the power adapter into a suitable power outlet.

4.3 Audio Connections

Connect the 'Audio Out' jack on the rear panel to your mixer, audio interface, or amplifier using a 3.5mm (1/8") TS cable. For monitoring, connect headphones to the 'Phones' jack.

4.4 MIDI Connections

Use standard MIDI cables to connect the Model 15 to other MIDI devices. The 'MIDI In' port receives MIDI data, 'MIDI Out' sends MIDI data, and 'MIDI Thru' passes incoming MIDI data directly to another device. Set the desired MIDI channel using the DIP switches on the rear panel.

4.5 Eurorack Integration

The Model 15 is designed in the Eurorack format, allowing it to be integrated into existing modular setups. Ensure proper power supply and mounting within your Eurorack case if you choose to remove it from its standalone enclosure. Refer to your Eurorack case manual for specific installation instructions.

5. Operating Instructions

The Model 15 offers a wide range of sound creation possibilities. Familiarize yourself with the front panel controls as depicted in Section 3.1.

5.1 Basic Sound Generation

1. Power On: Turn on the unit using the power switch.
2. Oscillators (VCOs): Adjust the 'Frequency' and 'Waveform' controls for OSC 1 and OSC 2 to generate initial tones. Experiment with 'Sync' and 'PWM' for harmonic variations.
3. Mixer: Use the 'Mixer' section to blend the outputs of the two VCOs and the 3/W Noise source.
4. Filter (VCF): Shape the timbre using the 'Cutoff' and 'Resonance' controls of the 24 dB ladder filter. The 'Envelope' section can modulate the filter cutoff.
5. Envelope: Adjust 'Attack', 'Decay', 'Sustain', and 'Release' parameters to control the amplitude and filter modulation over time.

5.2 Using the Sequencer and Arpeggiator

The 'ARP/SEQ' section provides tools for creating rhythmic and melodic patterns.

• Arpeggiator: Select 'ARP' mode. Hold down notes on a connected MIDI keyboard, and the arpeggiator will play them in sequence based on the 'Rate' and 'Direction' settings.
• Sequencer: Select 'SEQ' mode. Program steps using the 'Play', 'Hold', 'Tap', 'Tie', and 'Accent' buttons. The sequencer offers 3x256-step memory and key transpose functionality for complex compositions.

5.3 Patching and Modular Control

While semi-modular, the Model 15 allows for extensive patching using its 48 patch points. This enables you to override internal signal routings and create unique modulation paths. Refer to the included patch sheet (if applicable) or experiment with connecting different inputs and outputs using 3.5mm patch cables to explore its full modular potential.

6. Maintenance

6.1 Cleaning

Clean the unit with a soft, dry cloth. Do not use any liquid cleaners or solvents, as these may damage the finish or internal components.

6.2 Storage

When not in use for extended periods, store the Model 15 in a cool, dry place, away from direct sunlight and extreme temperatures. It is recommended to use the original packaging for protection.

7. Troubleshooting

• No Sound:
  • Check power connection and ensure the unit is turned on.
  • Verify audio cables are correctly connected to 'Audio Out' and your listening device.
  • Ensure 'Volume' knob is turned up.
  • Check VCO levels in the 'Mixer' section and 'Cutoff' frequency of the 'Filter'.
  • If using patching, ensure all connections are correct and not creating a feedback loop or dead end.
• MIDI Not Responding:
  • Verify MIDI cables are correctly connected to 'MIDI In'/'Out'.
  • Check the MIDI channel settings on both the Model 15 (DIP switches) and your external MIDI device.
• Unexpected Behavior:
  • Power cycle the unit (turn off, wait 10 seconds, turn on).
  • If extensive patching is used, try removing all patch cables to revert to the default semi-modular routing and test basic functionality.

8. Specifications

9. Warranty and Support

Behringer products are designed and manufactured to the highest quality standards. For detailed warranty information and technical support, please refer to the official Behringer website or contact your local distributor. Keep your purchase receipt as proof of purchase for any warranty claims.