Radical thought- Use 2 pair of speakers

DV, maybe that's why there are so many bad recordings..

I have done this multiple times over the years having been inspired by my friend's older brother's system(this is back in the 70's) that had matching Royal speakers stacked vertically. I remember he had a Scott tube amp and a AR turntable in separate room and this system rocked. I have had mostly negative results combining unmatched pairs.
When building multi-channel systems, it's recommended to have timbre matched speakers all around. The same speaker in each channel is considered ideal to create a "wall of sound". I now apply this approach and I'm currently using two pairs of Realistic Mimimus 7's stacked vertically and wired in series in my kitchen's two channel set up. With the extra pair, I have better bass. I have large speaker sound with a small speaker footprint.

The old, OLD, "Sweet 16" speaker project from Popular Electronics used 16 cheap 5" speakers on each side (but just one box per side), the theory being that crummy speakers driven very little together might produce good sound. My personal opinion is that Bose stole this idea and made a mint. I agree with the posts that say try different speakers, not two pair of the same. Let them 'average out' the sound. Plus the greater power capacity you get with more speakers. Don't spend big bucks, experiment first. I think what will suffer, from what I've heard using multiple speakers, is imaging. Good luck!

Tarsando...Professor Bose had a 24-driver (mono) system in the MIT music library in 1961. I don't know when the "sweet 16" project was published.

The Megaline speakers which Albertporter praises are described as a "line array". (Line arrays can sound great). However, the Megalines actually consist of three enclosures which are stacked.

Hmmm. sounds like this could be fun to try. I will have to wait until my larger towers are repaired...waiting for tweeters. I will let you know what happens but the plan is to place them in the same plane.