Direct Servo Technology

You may have heard about other servo subwoofers which are generally well regarded for their accuracy. It is a well established technology, most often based around an accelerometer which measures cone movement. Our Direct Servo technology has significant advantages over other servo technologies. We use a sensing servo coil which acts like a microphone which compares the original signal to what the subwoofer is actually reproducing. The signal is then corrected instantly to compensate for any differences. Once you understand the concept, you may wonder like we do why anyone would make a subwoofer any other way.

Some of the benefits of Direct Servo include:

• The effects of thermal compression are eliminated due to servo feedback controls the output
• Higher efficiency allowing output which would normally require a more powerful amplifier
• Deep bass extension can be achieved using a low mass driver with superior transient response
• Mechanical and thermal memory effects are reduced, further improving transient response
• Much greater damping control over the cone
• Dramatic reduction of the re-radiation of bass from inside the box

Read more about Direct Servo in our technology section.

View animation demonstrating how Direct Servo works

E22 uses our dual Hypex-module HX800XLR3 servo amplifier and two DS1204 driver. DS1204 features anodized aluminum cone, a 2" voice coil with linear excursion range of +/- 15mm.

The quickguide of the HX800XLR3 amplifier can be found here . The installation guide can be found here. The response curves with various extension frequency/damping combinations of both amplifiers can be found in our EQ page.

The sub comes with standard screw-in rubber feet.

Introductory price includes freight shipping to 48 US continental states only. Shipping to other region or country should inquire us for actual cost.

Documentation:
Quickguide
Integration guide