MartinLogan Expression ESL 13A Electrostatic Floorstanding Speaker

Expression ESL 13A is the artful presentation of audio focused solely on intensifying your emotional experience. Featuring a 13-inch (CLS™) XStat™ electrostatic transducer, dual 10-inch PoweredForce Forward™ woofers powered by dual 300-watt Class-D amplifiers, and controlled by a 24-Bit Vojtko™ DSP Engine and ARC™ (Anthem Room Correction).

• Frequency Response 24–23,000 Hz ±3dB
• Horizontal Dispersion 30°
• Vertical Dispersion 44" (112cm) line source
• High Frequency Transducer XStat™ CLS™ electrostatic transducer
• Panel Dimensions 44" x 13" (112 x 33cm)
• Radiating Area 572 in² (3,696 cm² )
• Low Frequency Transducer Two 10” (25.4 cm) cast basket, high excursion, rigid aluminium cone and extended throw drive assembly, non-resonance asymmetrical chamber format.
• Room Correction (Bass Section) Anthem Room Correction (ARC™) ready (Sold Separately)
• Amplifier Woofer: 2 x 300 watts/channel (4 ohms), 2 x 600 watts peak
• Sensitivity 91 dB/2.83 volts/metre
• Impedance 4 Ohms, 0.7 at 20kHz Compatible with 4, 6, or 8 Ohm rated amplifiers.
• Recommended Amplifier Power 20—600 watts per channel
• Crossover Frequency 300Hz
• 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
• Light: On, Dim, Off
• ARC™ Room EQ: On, Off
• Lighting LED intensity control: on, dim, 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 103 lbs. (46.8 kg)
• Dimensions 61.5" x 13.4" x 27.5 "(156.1cm x 33.9cm x 69.9cm)