HEDD Type 20 MK2 Active Studio Monitor User Manual

1. Introduction

The HEDD Type 20 MK2 is a 3-way, 900W active studio monitor designed for professional audio applications. This monitor incorporates advanced DSP technology, including full phase linearization (HEDD Lineariser) for enhanced stereo imaging and CoP (Closed or Ported) technology, allowing flexible operation modes. It is suitable for music production, mixing, mastering, broadcast, and video editing environments.

2. 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.
• 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.
• 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 your package contains the following items:

• HEDD Type 20 MK2 Active Studio Monitor (Left)
• Power Cable
• Quick Start Guide / User Manual (this document)

4. Setup

4.1 Placement

Position the HEDD Type 20 MK2 monitor on a stable surface, such as a speaker stand or desk, ensuring it is at ear level in your listening position. This specific unit is designated as the 'Left' monitor for stereo configurations. Ensure adequate space around the monitor for ventilation.

Figure 1: Front view of the HEDD Type 20 MK2 Active Studio Monitor. This image shows the monitor's three drivers: the HEDD Air Motion Transformer (HEDD AMT) tweeter, the midrange driver, and the woofer, along with the front-facing bass port.

Figure 2: Angled view of the HEDD Type 20 MK2 Active Studio Monitor. This perspective highlights the depth and overall design of the monitor, showcasing its robust build.

4.2 Power Connection

1. Ensure the monitor's power switch is in the OFF position.
2. Connect the supplied power cable to the IEC power inlet on the rear panel of the monitor.
3. Plug the other end of the power cable into a suitable AC power outlet.

4.3 Audio Input Connection

The Type 20 MK2 offers both balanced XLR and unbalanced RCA input options.

1. Balanced Input (XLR): For optimal signal integrity and noise rejection, connect your audio source (e.g., audio interface, mixer) to the XLR input using a balanced XLR cable.
2. Unbalanced Input (RCA): Alternatively, connect your audio source to the RCA input using an unbalanced RCA cable.
3. Ensure the 'SOURCE' switch on the rear panel is set to match your chosen input type (Balanced or Unbalanced).

5. Operating Instructions

5.1 Powering On/Off

1. Before powering on, ensure your audio source volume is turned down to prevent sudden loud sounds.
2. Flip the power switch on the rear panel to the ON position. The 'PWR' LED on the front panel will illuminate.
3. To power off, flip the power switch to the OFF position.

5.2 Volume and Gain Adjustment

The primary volume control should be managed by your audio source (e.g., audio interface, mixer). The 'GAIN' knob on the rear panel adjusts the input sensitivity of the monitor. Set this to an appropriate level to match your source output, typically starting at 0dB and adjusting as needed to achieve desired loudness without distortion.

6. Controls and Connections

Figure 3: Rear panel of the HEDD Type 20 MK2 Active Studio Monitor, displaying all controls and input/output connections.

The rear panel of the Type 20 MK2 provides access to all essential controls and connections:

• LOW SHELF: A rotary knob to adjust the low-frequency response. Use this to tailor the bass output to your room acoustics or personal preference.
• HIGH SHELF: A rotary knob to adjust the high-frequency response. Use this to tailor the treble output to your room acoustics or personal preference.
• GAIN: A rotary knob to adjust the input sensitivity of the monitor. This allows you to match the monitor's input level to the output level of your audio source.
• SOURCE: A toggle switch to select between the Balanced (XLR) and Unbalanced (RCA) audio inputs.
• BALANCED INPUT (XLR): Professional-grade 3-pin XLR connector for balanced audio signals.
• UNBALANCED INPUT (RCA): Standard RCA connector for unbalanced audio signals.
• HEDD BRIDGE: A dedicated port for future expansion or digital connectivity options.
• Power Inlet: Standard IEC C14 connector for the AC power cable.
• Power Switch: Rocker switch to turn the monitor ON or OFF.
• FRONT PANEL LEDs (PWR, SYNC): Indicators on the front of the monitor. 'PWR' indicates power status. 'SYNC' indicates synchronization status, particularly relevant for HEDD Bridge functionality.

7. CoP Technology (Closed or Ported)

The HEDD Type 20 MK2 features CoP technology, allowing you to operate the monitor in either a 'Closed' or 'Ported' mode. This changes the acoustic behavior of the speaker, offering flexibility for different monitoring needs and room environments. Refer to the detailed instructions provided by HEDD for how to switch between these modes and their respective sonic characteristics.

8. HEDD Lineariser

The HEDD Lineariser is an integrated DSP feature that provides full phase linearization. This technology corrects phase discrepancies across the frequency spectrum, resulting in improved transient response, clearer stereo imaging, and a more accurate representation of the audio signal. This feature is active by default and contributes to the monitor's precise sound reproduction.

9. Maintenance

9.1 Cleaning

To clean the monitor, use a soft, dry, lint-free cloth. Do not use liquid cleaners, aerosols, or solvents, as these may damage the finish or internal components.

9.2 Storage

If storing the monitor for an extended period, ensure it is kept in a dry, temperature-controlled environment, away from direct sunlight and extreme temperatures.

10. Troubleshooting

• No Sound:
  • Check if the monitor is powered on and the 'PWR' LED is illuminated.
  • Verify that the power cable is securely connected to both the monitor and the power outlet.
  • Ensure the audio source is active and its volume is turned up.
  • Check audio cables for proper connection and integrity.
  • Confirm the 'SOURCE' switch on the rear panel matches the input type you are using.
• Distorted Sound:
  • Reduce the volume level of your audio source.
  • Adjust the 'GAIN' knob on the monitor to a lower setting.
  • Check audio cables for damage or improper connection.
  • Ensure the audio source is not sending an overdriven signal.
• Hum or Noise:
  • Ensure all audio connections are secure.
  • If using unbalanced cables, try switching to balanced XLR cables for better noise rejection.
  • Check for ground loops by ensuring all audio equipment is connected to the same power strip or outlet.
  • Move the monitor away from other electronic devices that may cause interference.

11. Specifications

12. Warranty Information

The HEDD Type 20 MK2 monitor comes with a limited warranty. For detailed information regarding warranty terms, conditions, and registration, please refer to the warranty card included with your product or visit the official HEDD website.

13. Support

For further assistance, technical support, or to download the latest firmware and software for your HEDD Type 20 MK2 monitor, please visit the official HEDD website or contact their customer support team.

Website: www.hedd.audio