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https://www.martinloganowners.com/threads/frequency-response-measurement-of-original-ethos-and-after-3-way-active-crossover-modification.19996/#post-212947

img01 Measurement on original Ethos. img02 Ethos with base control on -8 can get most flat frequency response in our room. img03 Comparison of Ethos with and without bass. img04 Add 3way XO circuit and bypass all passive XO in Ethos. img05 3way XO, without Mid and Low, 350Hz and above only...

img01: Disassembling of Martin Logan Ethos ESL panel. img02: Disassembling ICE 200W D class Amp and control unit. img03: replace volume control with XO Mid channel (300Hz~80Hz) input. img04: First, bypass the active xo on the control panel and reconnect it directly to the D amplifier input. and...

It's been almost 6 month since I posted this project. This week I finally started building my new XO system with Martin Logan Ethos. img01: Drilling 6 outputs ( 2x of High, Mid, Low ) and 1 network sockets. img02: two 3way XO board and a Arylic DAC /network streamer on the right, power supply...

To bypass all Ethos excellent internal crossover seems not a wise idea. But I was inspired by Mr. Linkwitz's 4-way XO concept. So I have always wanted to try to use a pure Linkwitz-Riley XO in conjunction with an electrostatic panel.

Your advice is excellent and that's exactly what I'm going to do. I downloaded REW and have been studying it. The parts to make the XO are on the way.

Jonathan, thank you for your invaluable advice that is full of knowledge, and for fully considering the pros and cons of my two approaches. You are right, I need to figure out the crossover point. On the Ethos menu, the crossover point is set to 475Hz, so I may try +-100Hz crossover around it...

Yes, ESL is perfect to go Active Crossover IMO.

Hello Everyone, I am new here, I am trying to build a new active crossover system with my Martin Logan Ethos...... img1 is a simple 3-way hybrid crossover system. (Phase I) I plan to stick with this setup for at least 3 months before moving on to the Phase II setup. This way I will be able to...