Subwoofer Advice

@navyachts OK, I reviewed your pictures. Does the Anthem program have EQ capability? Can you increase certain frequencies manually? I assume you measure the speakers with a microphone? You should put sound absorption directly behind the speakers. It will improve your imaging and dampen sibilance. 

I also use ESLs and have been since 1978 along with subwoofers. If we can advance the low end 10 dB at 20 Hz keep it flat to 60 Hz then curve it down to zero dB at 100 Hz you should be fine without added subwoofers as long as the drivers and amps can handle the volumes you like to listen at. If not then we have to fill in with subwoofers from 80 Hz down. There are not many commercial subwoofers that are clean enough for your system. Martin logan has its balanced force subs, but you will need two subs. Do not even think about one. In your situation I think the best subs would be the KEF KC 92. They are also balanced force and you can get them in white which would fit your decor. They are quite small. I would put one right next to each ML, either side will do. I am hoping you will not need them. 

Bricasti Design just loaned me an M1 DAC to play with. Nice unit! I live about 30 minutes from the factory in Shirley, Mass.  

I am a happy Rythmic 15 in sealed sub user. Contact them and they will give you guidance on the best sub(s) for your application. They are very reasonably priced given their performance and flexibility.

@mijostyn +1 on the M1 DAC!

I am not sure if I can increase certain frequencies manually, nor am I sure about the program having EQ capabilities. Even if these features were available to me, I’m not sure if I could figure out how to do it. This kinda sounds a little to techie for me.

If we can advance the low end 10 dB at 20 Hz keep it flat to 60 Hz then curve it down to zero dB at 100 Hz you should be fine without added subwoofers as long as the drivers and amps can handle the volumes you like to listen at.

 

I have 11As and use 2 REL S/812s more to improve the soundstage than for deeper bass. Sounds great. Also I have gotten better sound by moving them 30" from the wall behind them. Room treatment has helped enormously, especially the Stillpoints Aperture 2 panels. Hope you get there. Joe

@navyachts I do not know that program. You have to jump in and read the manual. If you give me the exact product name I might be able to download the manual and give you a hand. You might want to look into those KEF subwoofers in the meanwhile.