HK Audio ELEMENTS E 115 Sub D 15" Active System Subwoofer

HK Audio ELEMENTS E 115 Sub D

The HK Audio ELEMENTS E 115 Sub D combines a 1500W bass amplifier with a separate 900W amp for powering up to three E 835 column speakers—2400W total in a single system subwoofer. This dual-amplifier design eliminates external amps when building small-to-medium PA systems, simplifying setup and reducing gear count. The 15-inch woofer extends down to 44Hz (-10dB) while achieving 128dB peak SPL, providing legitimate low-frequency extension with enough output to fill mid-sized venues. Network-controllable DSP via Ethercon includes four presets optimized for one, two, or three E 835 columns, plus a dedicated cardioid output with plug-and-play functionality for quick directional bass setups.

For mobile systems and fixed installations where simplicity matters, the E 115 Sub D's integrated amplification means you're running signal to the sub and powering your tops directly from it—no external racks, no separate amp channels. The DSP CONTROL software (Windows/Mac) provides full access to 10-band parametric EQ, high/low-pass filters, delay, limiting, and polarity control, with less than 2.6ms system latency for live performance. Full compatibility with HK Audio's LINEAR 7 series means you can network this sub alongside other HK systems, and the dedicated cardioid output simplifies rear-rejection arrays without complex signal routing. At 65 pounds with compact 19" cube dimensions, the E 115 Sub D fits station wagons and small vehicles—one person can transport and set up a full cardioid array with two subs and three columns. Explore our powered subwoofers for more system solutions.

Dual Amplifiers Power Complete Systems From One Sub

The E 115 Sub D houses two separate Class-D amplifiers: 1500W dedicated to the 15-inch woofer, and 900W available for driving up to three E 835 column speakers via E-Connect and Speakon outputs. This system-subwoofer approach eliminates the external amplification typically required for powered tops, reducing rack space, cable count, and power draw. The bass amp pushes the 15-inch driver to 128dB peak SPL with frequency response extending to 44Hz at -10dB—deep enough for electronic music, kick drums, and bass guitar fundamentals. The 900W column amp divides power across connected E 835 units, with DSP presets automatically optimizing crossover points, EQ, and limiting for one, two, or three tops. This means you're building complete PA systems with a single power cable to the sub and a single audio feed from your mixer. 

Plug-And-Play Cardioid Output Simplifies Directional Arrays

The dedicated cardioid output automatically generates the phase-delayed signal needed for rear-firing subwoofers in cardioid configurations—no external processors or complex cable routing required. Connect a second E 115 Sub D (or LINEAR SUB 1500 A) to the cardioid output, position it rear-facing behind the main sub, and you've created a directional bass pattern that focuses energy forward while canceling output behind the system. This dramatically reduces stage wash in live performance environments and minimizes low-frequency buildup in reflective rooms. The plug-and-play functionality means you're not calculating delay times or worrying about polarity—the sub handles the signal processing internally. Combined with the four presets optimized for different E 835 configurations, you can deploy complex cardioid arrays with multiple tops using nothing more than the front-panel controls or remote DSP software over the network.

Networked DSP Control With LINEAR Series Integration

Ethercon RJ45 connectivity (in/thru) enables remote control via HK Audio's DSP CONTROL software for Windows and Mac. The onboard DSP runs at 96kHz sample rate with less than 2.6ms latency, providing fully parametric 10-band EQ with variable filter characteristics, high/low-pass filters, polarity control, level adjustment, delay (for time-alignment), limiting, and mute functions. This level of control is essential when integrating subs into existing systems or correcting for room acoustics. Full compatibility with the LINEAR 7 series means you can network E 115 subs alongside LINEAR 7 speakers and control the entire system from a single software interface—useful in fixed installations where multiple zones or speaker types need coordinated management. The compact 19" x 19" x 23.4" MDF cabinet with water-based black finish weighs just 65 pounds, and dual MultiGrip handles support balanced single-person lifting. The modest footprint and weight mean even large cardioid setups with multiple subs and columns fit in standard vehicles without requiring cargo vans or trailers.

Highlights

• Dual Class-D amplifiers: 1500W for bass driver, 900W for powering up to three E 835 columns
• 15-inch woofer achieves 128dB peak SPL with 44Hz (-10dB) low-frequency extension
• Plug-and-play cardioid output automatically generates phase-delayed signal for directional arrays
• Network-controllable DSP (96kHz, <2.6ms latency) with 10-band parametric EQ and comprehensive processing
• Four presets optimized for 1x, 2x, or 3x E 835 columns plus remote control mode
• Full compatibility with HK Audio LINEAR 7 series for networked multi-zone systems
• Compact 65-pound design with 19" x 19" footprint for single-person transport and setup

ELEMENTS E 115 Sub D 15" Specifications

What's in the Box