{"product_id":"martinlogan-classic-esl-9-electrostatic-speakers","title":"MartinLogan Classic ESL 9 Electrostatic Speakers | The Grid","description":"\u003ch1\u003e\u003cspan\u003eMartinLogan Classic ESL 9 Electrostatic Loudspeakers\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMartinLogan Classic ESL 9\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e brings Masterpiece Series electrostatic technology into a completely passive loudspeaker design. A \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e44 × 9.2-inch XStat CLS electrostatic panel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with 405 square inches of radiating area handles the midrange and high frequencies, while dual \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e8-inch aluminum-cone woofers\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e extend bass response to a specified \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e34 Hz\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUnlike the powered Impression ESL 11A, the Classic ESL 9 has \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eno internal woofer amplification, DSP, or Anthem Room Correction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Both its electrostatic panel and dynamic bass section are driven by the connected amplifier, making amplifier selection especially important.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e44 × 9.2-Inch XStat CLS Electrostatic Panel\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eAt the heart of the Classic ESL 9 is MartinLogan's \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eXStat Curvilinear Line Source (CLS) electrostatic transducer\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The panel measures 44 inches high by 9.2 inches wide and provides \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e405 square inches of active radiating area\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMartinLogan's extremely lightweight electrostatic diaphragm reproduces the spectrum above the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e380 Hz crossover point\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, avoiding a conventional midrange driver and tweeter. CLS curvature provides \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e30° horizontal dispersion\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e while retaining the controlled vertical radiation of a 44-inch line source.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eMicroPerf, ClearSpar \u0026amp; AirFrame Blade\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMicroPerf stator technology\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e exposes substantially more diaphragm surface than traditional electrostatic panel construction, increasing usable radiating area without requiring a wider panel. \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eClearSpar\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e spacers reinforce the panel and maintain diaphragm tension without substantially obstructing its transparent radiating surface. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe complete panel is supported by MartinLogan's \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAirFrame Blade\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, manufactured from aerospace-grade extruded aluminum. Its rigid structure mechanically and acoustically isolates the electrostatic panel from the woofer enclosure while minimizing obstruction of the panel's dipole radiation. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eControlled Dipole Radiation\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe XStat panel operates as a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003etrue dipole radiator\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, producing sound from both its front and rear surfaces while directing relatively little energy toward the side walls.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis controlled dispersion reduces early lateral reflections that can blur stereo localization while allowing later-arriving rear radiation to contribute to image depth and ambience. MartinLogan recommends positioning the electrostatic panel at least \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2.5 feet from the wall behind it\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e for optimum performance. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eDual 8-Inch Aluminum Woofers\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eBass is produced by two \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e8-inch cast-basket, high-excursion aluminum-cone woofers\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e arranged in an opposing configuration, with one firing forward and the other rearward.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe opposing arrangement reduces cabinet vibration, particularly through the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e34–100 Hz region\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, while the rear woofer is tuned to reduce undesirable interaction with the wall behind the speaker. A flared, rear-firing low-turbulence slot port extends deep-bass output while also contributing structural bracing to the enclosure. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe complete passive system delivers a specified frequency response of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e34 Hz–23 kHz ±3 dB\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eAdvanced Vojtko Crossover\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eMartinLogan's \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eVojtko-voiced crossover\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e integrates the electrostatic panel with the dual dynamic woofers at \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e380 Hz\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe passive network uses a custom-wound audio transformer, air-core inductors, low-DCR steel-laminate coils, and polyester capacitors. Because the Classic ESL 9 is completely passive, this crossover performs the critical task of integrating the electrostatic and dynamic sections without the active DSP used in the powered Masterpiece models. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eBi-Wire \u0026amp; Bi-Amp Capability\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eTwo sets of MartinLogan \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ecustom 5-way tool-less binding posts\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e provide separate connections for the electrostatic panel and woofer section.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWith the supplied jumpers installed, the Classic ESL 9 can be operated from a conventional single speaker-cable connection. Removing the jumpers allows \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ebi-wiring or vertical\/horizontal bi-amplification\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, providing additional flexibility for advanced two-channel systems. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA low-voltage DC supply energizes the electrostatic panel, eliminating the need for a conventional heavy IEC power cable. Maximum electrical consumption for the electrostatic system is only \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2 watts per channel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with less than 1 watt consumed in standby. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eAmplifier Matching\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eAmplifier quality matters with the Classic ESL 9. Sensitivity is \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e90 dB\/2.83V\/1m\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with a nominal impedance of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e4 ohms that falls to 0.8 ohm at 20 kHz\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. MartinLogan's current product specifications recommend \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e20–400 watts per channel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and compatibility with amplifiers rated for 4-, 6-, or 8-ohm loudspeakers. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9?utm_source=chatgpt.com\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe low high-frequency impedance means wattage alone does not determine compatibility. Current delivery, output-stage stability, and the amplifier's behavior into an electrostatic load should all be considered when building a Classic ESL 9 system.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Details\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eMartinLogan Classic ESL 9\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSeries\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMasterpiece Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePassive Hybrid Electrostatic Floorstanding Loudspeaker\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFrequency Response\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e34 Hz–23 kHz ±3 dB\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eElectrostatic Transducer\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eXStat CLS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePanel Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e44 × 9.2 in \/ 112 × 23 cm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRadiating Area\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e405 in² \/ 2,576 cm²\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePanel Technology\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eXStat \/ CLS \/ MicroPerf \/ ClearSpar\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePanel Structure\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAirFrame Blade\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHorizontal Dispersion\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e30°\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eVertical Dispersion\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e44 in \/ 112 cm line source\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBass Drivers\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e2 × 8 in \/ 20.3 cm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWoofer Construction\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHigh-excursion rigid aluminum cone\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWoofer Basket\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCast\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWoofer Configuration\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOpposing forward\/rear-firing array\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eEnclosure\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRear-ported\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCrossover Frequency\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e380 Hz\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSensitivity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e90 dB \/ 2.83 V \/ 1 m\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eNominal Impedance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e4 Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eImpedance at 20 kHz\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e0.8 Ω\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRecommended Amplification\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e20–400 W\/channel\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCrossover Components\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCustom transformer, air-core coils, low-DCR steel-laminate coils, polyester capacitors\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eConnections\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCustom 5-way bi-wire tool-less binding posts\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBi-Wire \/ Bi-Amp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eYes\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaximum Power Draw\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e2 W per channel\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eStandby Power\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e\u0026lt;1 W per channel\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e59.8 in \/ 152 cm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWidth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e10.4 in \/ 26.4 cm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDepth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e25.4 in \/ 64.6 cm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e78 lb \/ 35.4 kg each\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eThese specifications follow MartinLogan's current product page. The older owner's manual specifies \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e50–400 watts\/channel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, while the current manufacturer page specifies \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e20–400 watts\/channel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e; I would use the current 20–400-watt specification for the Shopify listing. \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.martinlogan.com\/en\/product\/classic-esl-9?utm_source=chatgpt.com\"\u003eMartinLogan, Ltd.\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eMartinLogan Classic ESL 9 at The Grid HiFi\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThe Grid HiFi in Houston specializes in MartinLogan electrostatic loudspeakers and complete high-end two-channel systems.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Classic ESL 9's passive architecture, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0.8-ohm high-frequency impedance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, dipole radiation, and separate panel\/woofer connections make amplifier matching and speaker placement particularly important. The Grid can match the ESL 9 with appropriate amplification, establish panel distance and toe-in, configure single-wire or bi-amped systems, and optimize the complete system around the listening room.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWe can also design the supporting system—from analog and digital sources to amplification, cabling, power, equipment support, networking, and final setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eComplimentary White Glove Delivery • Travel Reimbursement\u003c\/span\u003e\u003cspan\u003e*\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eQualifying purchasers may receive airfare reimbursement for a private audition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eConsidering the MartinLogan Classic ESL 9? Experience a properly matched electrostatic system before you decide. Call The Grid HiFi at (713) 218-8120 to arrange your private audition.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003e*\u003c\/span\u003e\u003cspan\u003eRestrictions apply. Contact us for details.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"MartinLogan","offers":[{"title":"Gloss Black","offer_id":55160482824529,"sku":null,"price":7499.98,"currency_code":"USD","in_stock":true},{"title":"Walnut","offer_id":55160482857297,"sku":null,"price":7499.98,"currency_code":"USD","in_stock":true},{"title":"Dark Cherry","offer_id":55160482890065,"sku":null,"price":7499.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1047\/7178\/0945\/files\/29510328536_99c8be54d3_b.jpg?v=1790989112","url":"https:\/\/gridhifi.com\/products\/martinlogan-classic-esl-9-electrostatic-speakers","provider":"The Grid","version":"1.0","type":"link"}