Against the suggestions of a number of folks (who all gave thoughtful, well intentioned advice), I took a chance on a pair of the E-V Fours as they were close by and they were cheap. I figured that they'd make a interesting project--I could learn a thing or two about older, efficient speakers and Electro-voice in general. Upon first listening to them, they more or less sounded exactly how some people described--unremarkable, distant, terrible high end, just not one of EV's greatest products.
I took another chance and decided that I'd invest a little bit more money and replace the capacitors and resistors in the crossover. I've recapped a number of speakers in the past with very noticeable (always for the better) results, but never have I heard such a night and day difference pre and post recap--the speakers now sound remarkably better. The original caps must have been way out of spec.
Although much, much better, their weak point does seem to be the cone tweeter (which I believe is what they called a TC-35...I can't tell by the numbers printed on the tweeters, but they look identical to pictures I've seen of the TC-35). I have been wanting to find out some more about the crossovers with the idea that maybe I would eventually replace the cone tweeter with something else...maybe a horn. As you stated previously, there are no data sheets for the E-V Four (although there are for the "Four A") anywhere on the web. I actually went ahead and purchased that data sheet from the seller on that auction site, and will post higher resolution scans of it when it arrives.
If anyone has any recommendations for a tweeter upgrade, please do share!
Appreciate the info shared thus far.
.
