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Prior to experimentation with absorptive and diffusive material get the placement right. Placement helps to remove or minimize boomy bass. And at the same time allow maximum or optimal performance of the panel. Inside ML Classic ELS 9 instruction manual a formula for inside room speaker optimal...

My understanding biamping works best when both amplifiers are identical or at least have similar gain. If one amp does not provide enough amperes to optimal drive loudspeakers, then another identical map is required. Therefore, used together they adequately drive or if they match the loudspeaker...

You are welcome. Thanks for kind words. You can post questions and who ever can help may provide relevant information.

I first thought perhaps the fault is in ELS 9 panels. However chances are the power supply circuits are defective. Thanks to Martin Logan honouring the warranty I got both replaced. Following is the reason why I say the above. I used to bi-amp ELS9 with 2 similar anthem power amps each max. 370...

Crossover is designed keeping characteristics of electrostatic or electromagnetic drivers in mind. If the German electrostatic driver is not an exact copy of the original. Meaning among other differences, at a minimum, perhaps different from original panel lower frequency cut off point. Then you...

Got panels repaired in Pakistan.

If the former owner took good care of the panels when placed in storage. Perhaps when in operation not expose them to sunlight, smoke, limited dusty environment, cover them when not in use, kept in a cool environment and regularly vacuum. If panels are not exposed to corrosive environment such...

If the speakers truly come to life at higher volume then they should not sound bass heavy. Sound bass heavy one reason is the panel output is weak. Despite being bass heavy and listening carefully at the volume just when the panel comes to life. If you think panel sonics are greater compared to...

In April 2023 discovered a formula in ML Classic ELS 9 instruction manual for inside room speaker optimal or precise placement. If not precise optimal placement then close to optimal or within one feet radius of ideal or perfect placement in the room. Measure the distance of the wall in front...

Play them between low and moderate volume. If there is no improvement at all in sonics after one month or after three months have gone by then highly probable copper tape that runs the perimeter of the panel has become detached at some areas. This results in perhaps complete loss of high...

If the panels look very clean they are very clean and transparent. Not requiring a wash. Given the rest of the music system has no faults. If hum, distortion, or static accompanies music then the problem may lie in the loudspeaker electronics. First, vacuum them well then after week or 2...

Hum may signify that fault is in power supply rather than crossover. i am most probably incorrect in my identification of problem area, namely crossover circuit. Sorry for confusion.

https://www.usaudiomart.com/details/650071640-martin-logan-cls-electrostatic-speakers/?utm_source=featured_ad&utm_medium=web&utm_content=category&utm_campaign=category-featured-ad-click&utm_term=650071640 Tmort Original CLS for sale. Accurate useful info...

To cut a long story short: I would recommend establishing a sale price that is a accurate reflection of the true condition of ELS 9 known to yourself and conforms with your product representations. If you receive no offers to buy and some time has passed reduce your sale price. If you do not...

Playing quietly differs from playing at low volume. My original CLS at all volumes used to play quietly when i acquired them. Its a virtue or positive attribute of high end loudspeakers.

Latest incarnation of Lavardin IT i.e Lavardin ITx has market value 6,900 GBP. This figure is greater than the 3X sale price in USA of Anthem MCA225 generation 2. Anthem is a company related to Martin Logan. MCA225 may not offer similar quality of sonics but satisfaction is subjective. I may be...

Introduction: I employ anthem amps either MCA 225 or STR integrated or both. Both these amps both channels simultaneously drive, max power output approx. 180 watts@ 8 ohms. Rated for 2- and 4-ohm loudspeaker resistance. I drive ELS 9 at amp volume between -35db and -26 dB max. At -26 dB sonic...

If I recall correctly, I read a long time ago that CLSIIa panel and electronics are exactly same as CLSII. Only difference is in electronics. Namely, addition of a very small inexpensive cable connection in the electronic circuit designed to improve the load presented to the amplifier. If your...

Introduction: I dismantle not Spire but ELS 9. ELS 9 is passive design and has two opposing woofers. Inside the ELS 9 cabinet is a crossover circuit, high voltage power supply circuit and audio transformer. Body ( ignore perhaps inaccurate): Inside Spire i imagine amplifier signal travels...

May be the case, panel/s due to wear and tear, that is spoilage due to over time greater than moderate level music playback, distort during playback. May take place during certain parts of few recordings. And especially during moderate and high level playback. I noticed this phenomenon in CLS...