A friend of mine gave me a pair of his Insignias that were no longer in use.
I hooked them up in my rig and didn't think they sounded bad for their retail cost. Imaging was pretty impressive. Female vocals sounded pretty good, but just about any other kind of music highlighted their flaws, especially the woofer's breakup.
Since my brother has been asking for a pair of decent speakers, and it will be a little while before I can start building anything else, I decided to hot rod these and give them to him for Christmas.
About 8am I got to work, breaking down the speakers and started to apply putty the insides. While the putty was drying, I stripped the crossovers and got to work on the new boards with GR's Insignia upgrade kit. Including a few breaks, some internet browsing, it took a few hours to complete them.
I only have a few hours on them, but will say they're much more pleasant to listen to. The woofer's breakup is no longer noticeable and the speaker is much more coherent. If I had a small room or a nearfield setup, I'd be tempted to pick up a pair for myself and upgrade them.