Thank you! I'm trying to collect the UREI pieces I'm most intrigued by. I'd like to get my hands on at least one 6500 amplifier, have you ever tried one? There's a member on here, thierry, who highly recommends them.. Do you still have your father's C series? There are quite a few folks who prefer the A, which is of course why I'm curious. rusty jefferson pointed out a website which lists all the variants of the 604. There's rave & praise for the 813, A and B, but the C barely gets a mention, "..it sounds nothing like the previous versions."
I think that's what I found too, that the 813C's were forward. At the same time I was reading through the manuals rusty provided and then began to take frequency response measurements with AudioTool on my phone. Rudimentary, but I found the crossover knobs don't exactly correlate to the graphs depicted in the manual. "HF Trim", for example, spiked 8khz and ONLY 8khz, despite what the literature stated. This thread I just stumbled upon is a good read too: https://www.diyaudio.com/community/t...i-813c.357977/ A couple members who own or have experience with them echoed my own experience with them, that they need EQ and sounded a bit forward without it, especially free standing. But I broke down, bought an equalizer, put it in, made more measurements/adjustments and it's been fabulous listening ever since.
I'd love to have them soffit mounted, but I don't think I have the room and that I'd lose one of the windows in that living room. Would make the house hard to sell too. But if it's going to be our residence for several decades, does that really matter? My soon to be wife is also into the hobby! It's amazing. She's the one who insisted we drive to get the 813C's and then who later found the 811C's right in our backyard. She's even into ratty old cars & trucks like I am.
Some of you old timers are quite friendly to the newbies.
I thank my dad for that as well! Funny to see how much further I've taken it compared to my dad. I think one of the coolest things is the jam sessions he plans before coming over. I must've done something right. The only two speaker systems he's ever commented (notably) on are these UREI's and then the XPL200's they replaced and which he now has. Which is funny to me because of all the stuff I thought he'd "pop" on, it was the old marantz gear I once had, which was tribute to what I remember seeing when I was growing up.