Hi folks,
As I mentioned recently in another thread, I just picked up a set of CF-3s. They sound crazy good, and I'm really enjoying them. I haven't seen anybody mention it, but in 1995, D.B. Keele Jr. did a review of them for Audio magazine. You can pick up your very own copy for less than $10 on ebay. Keele is an engineer, not a writer, so it isn't the prettiest audio review that ever was. That said, he took really comprehensive measurements, and they are super informative.
Here is what I took away: First, these were clearly built for incredible dynamic range across the entire audible spectrum. Second, as we all know, Klipsch lied about the sensitivity. The CF-3s were 94.5 db 1w/1m, which seems about right per my volume knobs. Third, the cabinets are pretty rigid. So, hours spent on complicated bracing may not be the best way to go. Fourth, the crossover design is exemplary. Super smooth and great phase response by any standard. No wonder these are so easy to listen to. Fifth, the big horn gets a little rough, even up in areas where people hear pretty well (between 5-10k). That said, because the crossover is so perfectly tuned, I'd be hesitant to swap horns. All-in-all, it was pretty informative, and I think confirms what many folks hear. I'll scan and post if I get the chance.
I'm not sure extensive mods are the best idea for me. That is saying something, because these are y first factory speakers in more than a decade. However given their age, I will recap the crossovers as soon as I can. I'm sure that will make a big difference, as caps get a bit crusty at 20 years. I'm amused that folks here are willing to do very time-consuming mods inside of cabinets, but afraid to do a little soldering. Not that I don't support the idea of giving a little business to guys like Crites.
I'm glad to be a member of this community. The Epics have to be among the most underrated speakers of all time, and I'm glad you folks are keeping the flame burning. I'll try and post some pics when I get around to recapping them.
Best,
Paul