Well I just bought myself a pair of these insignia's and I must admit if I wasnt a diy'er i would return these rather quickly.
But since I bought these to measure them and compare my results to Zaphs and other's to double check that everything is set up right on my end I'll keep them. For $35 I cant complain, they are worth it for confirming that my equipment and SW are operating properly, and when I get around to it they will get fixed up.
For comparison I did some listening to these and my Bose single cubes(older models) and you might not believe me but the bose were better in most respects. First off the older bose were higher quality than the new crap they peddle so try not to think of the new stuff here. Also, I bypassed the crossover and "Bass" module and run the cubes full range crossed to cheap 12's(technics) via internal receiver x-over. Now these bose lack the 100-300hz range pretty bad however
they have really low energy storage and omitting the afformentioned freq. range the cube walls dont resonate at all, so the end result is a very clean sound and not as bright as you might think.
The Insignias, ugghhh. I dont know yet if they lack high end extension or if all of the midbass peaks and box resonance are just overpowering the highs. The mid bass is so resonant that the bass and the mid/upper sound very recessed and I did not enjoy listening to them at all.
That being said, I ran the bose off one amp and the insignias off another and when running them both together with appropriate levels they complimented each other nicely, although still too much resonance.
An interesting song to listen to on these, which happens to be great for detecting resonance in male vocals is "purple rain" by Prince, ironically its also good for analyzing female vocals, i mean it is prince were talking about here. What makes this song good is the silence after he sings in parts which make any delayed sounds (from the box) really stand out, these speakers are so bad it sounds like an echo chamber, no exaggeration.
also listening to hotel california by the eagles you can hear some "tapping" sounds right after the drum beats, another enclosure aspect!!!