I just bought Bower & Wilkins 683s and got them setup in my apartment. The high to mid range sounds fantastic. Very wide and realistic. As you get to the lower end of the midrange something is missing.
I have my old speakers still setup on a different channel so that I could a/b test. They are old Technics (picture below). I replaced all the speakers, so it's really just a Technics cabinet filled with new speakers.
They are hooked up to a Yamaha htr-5240 amp with 70 watts per channel. The music is coming from my computer and an m-audio Firewire 410 is acting as the DAC.
Here is the test I ran:
I played Fleet Foxes - Helplessness Blues, which is my go to reference traffic.
When I play both speaker paris separately, the B&Ws are clearly better. The Technics sound narrow and a bit muddy by comparison. When I play all four paris at once it sounds incredible. The Technics have something in the mid-bass range that the B&Ws lack. When you play all four at once and then cut the Technics, it leaves behind a giant hole in the audio.
I've tested this on a lot of different styles of music like rock and electronic. It's not a big issue there. It's really glaring on acoustic and classical music. Specifically the lower harmonics of string instruments like guitars and cellos
Is this just how the B&W 683s are? Is there something I can do to fix the issue?