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Need help?Do you have a question about the Electro-Harmonix Dual Expression and is the answer not in the manual?
Connect 1/4" TRS cables to expression inputs. TS cables will not work.
Reverses the expression pedal sweep direction from minimum-to-maximum or vice-versa.
Reverses TRS jack polarity for compatibility. Use OUT for EHX pedals.
Adjusts the minimum setting of the expression pedal sweep. Set to 10 for full range.
The Electro-Harmonix Dual Expression pedal is a versatile tool designed to provide simultaneous control over two expression-ready devices. This pedal offers musicians a high degree of flexibility in shaping their sound by allowing independent customization of the expression sweep for each output. Its core function is to translate physical foot movement into control signals for other electronic instruments or effects units that accept expression pedal input.
The Dual Expression pedal is engineered to manage two separate expression outputs from a single physical pedal. This means that a musician can control two distinct parameters on two different devices (or two parameters on the same device, if it has multiple expression inputs) with one foot movement. Each output channel is equipped with its own set of controls, enabling independent configuration of how the expression sweep behaves for that specific output. This dual functionality is a significant advantage, as it streamlines a musician's setup and allows for complex, synchronized parameter changes with a single action. The pedal effectively acts as a bridge between the musician's physical input and the electronic parameters of their gear, offering a dynamic and intuitive way to manipulate sound in real-time.
The Dual Expression pedal boasts several features that enhance its usability and compatibility with a wide range of devices.
EXP 1/EXP 2 Jacks: These are the primary connection points for the pedal. Users plug 1/4″ TRS (Tip-Ring-Sleeve) cables into these jacks, and the other ends connect to the expression inputs of the devices they wish to control. The pedal comes with two 1/4" TRS cables, ensuring immediate usability. It's crucial to note that standard TS (Tip-Sleeve) instrument cables are generally not compatible; TRS cables are required for proper functionality, as they carry the necessary signals for expression control.
REV Button: This button allows users to reverse the direction of the expression pedal's sweep. In its default "OUT" position, the pedal operates in a standard manner: moving the pedal from heel to toe causes the expression to sweep from its minimum to maximum setting. Pushing the REV button to its "IN" position reverses this behavior, so moving the pedal from heel to toe will sweep the expression from maximum to minimum. This feature is invaluable for matching the pedal's physical movement to the desired parameter change on the controlled device, or for creative effects where an inverted sweep is preferred.
TRS +/- Button: This feature addresses compatibility issues with various expression-ready devices by allowing the user to reverse the polarity of the TRS jack. In the "OUT" position, the internal potentiometer's wiper is connected to the Tip of the TRS cable, and the potentiometer's maximum setting is connected to the Ring. The Sleeve of the TRS cable is always connected to the potentiometer's minimum position. Pressing the TRS +/- button to the "IN" position reverses this configuration: the wiper connects to the Ring, and the maximum setting connects to the Tip. For Electro-Harmonix pedals, the "OUT" position is typically recommended. However, if a user experiences an uneven or incomplete sweep over the full range of the foot pedal with a non-EHX device, toggling this setting can often resolve the issue, ensuring a smooth and responsive control experience. This flexibility is key to the pedal's broad compatibility across different manufacturers' equipment.
RANGE Knob: The RANGE knob provides fine-tuned control over the minimum setting of the expression pedal's sweep. As the user turns this knob towards 0, the minimum point of the sweep moves closer to the fixed maximum setting. Conversely, setting the knob to 10 allows for the full range of the expression sweep, from the absolute minimum to the absolute maximum. This feature is incredibly useful for tailoring the expression's sensitivity and range to specific musical contexts or desired effects. For example, a musician might want to restrict the sweep to a smaller, more precise range for subtle parameter adjustments, or utilize the full range for dramatic changes. The ability to independently adjust the range for each output further enhances the pedal's versatility, allowing for highly customized control over two distinct parameters simultaneously.
The Electro-Harmonix Dual Expression pedal is designed for durability and reliable performance, with maintenance primarily focused on ensuring proper connections and addressing any operational issues through troubleshooting.
Warranty Information: Electro-Harmonix provides a one-year warranty from the date of purchase, covering defects in materials or workmanship. This warranty applies to original purchasers who bought their product from an authorized retailer. Should a unit require service within this period, customers are advised to contact EHX Customer Service for a Return Authorization Number (RA#) before sending the product in. This process ensures that any necessary repairs or replacements are handled efficiently. The warranty information also specifies contact details for customer service in the United States & Canada and Europe, facilitating support for users in different regions.
Troubleshooting for Sweep Issues: The manual explicitly guides users on how to troubleshoot issues related to the expression sweep. If a user finds that the Dual Expression does not achieve a smooth sweep over the full range of the foot pedal, they are advised to try changing the TRS +/- setting. This direct instruction empowers users to resolve common operational problems without needing to send the unit for service, contributing to the pedal's overall ease of maintenance and user-friendliness.
In summary, the Electro-Harmonix Dual Expression pedal is a robust and highly adaptable control device that significantly enhances a musician's ability to manipulate their sound in real-time. Its dual output capability, combined with independent controls for sweep direction, TRS polarity, and range, makes it an indispensable tool for integrating expression control into complex setups. The clear instructions for connectivity and troubleshooting, along with comprehensive warranty support, ensure a reliable and long-lasting user experience.
General| Polarity Switch | Yes |
|---|---|
| TRS/TS Switch | Yes |
| Range Knob | Yes |
| Outputs | 2 x 1/4" TRS |
| Input | 1/4" TRS |
| Output | 2 x 1/4" TRS |
| Input Impedance | 10k Ohms |
| Control Voltage Range | 0 to 5V |
| Current Draw | None (passive) |
| Power Requirements | None (passive) |
| Compatibility | Compatible with most devices using expression inputs |
