The Impression ESL 11A is part of the Masterpiece Series. It features a dual 8-inch woofer system, with ARC-honed performance, for a perfectly blended low-frequency response. The groundbreaking integration of this woofer array and MartinLogan’s signature 11-inch wide XStat CLS transducer, coupled with a powerful dual amplifier section, delivers an expressive and dynamic audio experience. It's an experience of pure audio pleasure.

Look at the familiar elements of the classic MartinLogan electrostatic loudspeaker: Advanced MicroPerf stator technology, which allows for almost twice the exposed electrostatic diaphragm surface as a traditional electrostatic panel of the same size. A reinforced electrostatic panel with rigid ClearSpar™ spacers, keeping an exact level of tension on the vacuum-bonded diaphragm without obscuring the beautiful see-through design. Add to these the slender, pointed-arrow design of the new AirFrame™ Bladeconstruction and the result is a powerfully evocative composition creating a harmonious connection between the panel and its woofer cabinet.

Some radical refinements include:  The Impression ESL 11A woofer section, powered by new dual 275-watt Class-D amplifiers, and controlled by a 24-Bit Vojtko™ DSP Engine and ARC™ (Anthem Room Correction).  Using two 8-inch laser-engineered low-distortion aluminum cone woofers in independently enclosed compact chambers, exclusive PoweredForce Forward™ bass alignment technology controls the interaction between the rear-firing woofer and the wall behind that woofer. With a smart phase-shifting design, they minimize the effect that wall has on bass information that might bounce back into the listening room.

This uniform frequency response results in realistic bass effects you can feel. It’s one more way MartinLogan innovation improves your listening experience in any room.

Achieving the Laboratory Standard in Your Own Room 

In the lab, MartinLogan engineers strive for transparency. Outside the lab, there’s one wildcard their engineers can never account for: Your listening room. The unique size and shape of your listening space (and the size and shape of its contents) can make bass waves do unpredictable things, greatly affecting a speaker’s overall performance.

For the first time in electrostatic speakers MartinLogan is introducing the integration of exclusive Anthem Room Correction (ARC) technology. By engaging ARC to control the low-frequency curve in relation to the output of the ESL panel  you will experience performance on par with MartinLogan’s audio test lab.  ARC measures low-frequency sound output in your room and compares it to optimal response curves that account for spatial anomalies. The advanced algorithms of ARC then effectively remove the anomalies, leaving only the ideal standard: realistically blended, natural-sounding bass performance in your listening space.

By minimizing room interactions with PoweredForce Forward bass technology and the advanced room correction capabilities of ARC, along with its unique synthesis of the ESL and bass sections, the Impression ESL 11A produces perfectly-etched imaging and focus; optimum natural reproduction of sound at lifelike listening levels; and agile, full-range operation in open air.

It is this level of ultimate performance that separates the merely excellent from a true masterpiece!  Made in North America.

Finish Options: Available in Gloss Black, Gloss White, Dark Cherry, or Walnut.

Premium Finish Options: Available in Rosso Fuoco - Gloss, Cordoba Red, Deep Sea Blue, Basalt Black, Meteor Grey, Desert Silver, or Arctic Silver - all in Gloss Metallic.

Specifications:

• Frequency Response:  29–23,000 Hz ±3dB
• Recommended Amplifier Power:  20—550 watts per channel
• Horizontal Dispersion:  30°
• Vertical Dispersion:  44" (112cm) line source
• Sensitivity:  91 dB/2.83 volts/meter
• Impedance:  4 Ohms, 0.6 at 20kHz Compatible with 4, 6, or 8 Ohm rated amplifiers.
• Crossover Frequency:  300Hz
• High Frequency Transducer:  XStat™ CLS™ electrostatic transducer » Panel Dimensions: 44" x 11" (112 x 28cm) » Radiating Area: 484 in² (3,136 cm² )
• Low Frequency Transducer:  Two 8” (20.3 cm) cast basket, high excursion, rigid aluminium cone and extended throw drive assembly, non-resonance asymmetrical chamber format.
• Amplifier:  Woofer: 2 x 275 watts/channel (4 ohms), 2 x 550 watts peak
• Room Correction (Bass Section):  Anthem Room Correction (ARC™) ready (Sold Separately)
• Components:  Custom-wound audio transformer, air core coils, polypropylene capacitors. 24-bit DSP based preamplifier (used with woofer amplifier).
• Audio Controls:  Bass: ±10 dB under 75 Hz Mid-Bass: –2 dB, 0 db, +2 db ARC™ Room EQ: On, Off
• Signal Inputs:  WBT-0703Cu nextgen™ 5-way binding posts feature a filigree signal conductor made from gold plated, nickel free, non- ferromagnetic, pure copper for high conductivity and fully insulated. Free from eddy current effects.
• Inputs:  AC Power, RJ45 (for ARC), mini USB (for ARC)
• Power Draw:  Idle: < 1W/channel Max: 500W/channel
• Weight:  90 lbs. (40.9 kg)
• Dimensions:  60.75" x 11.9" x 27.4" (154.3cm x 30.2cm x 69.6cm)