Hey all, just a listening update (as requested by FS)
Last night I finally got to watch a half hour of Rio with my kids, half of Wolverine, and listen to a couple songs. I got home late and it was a long long day. So I couldn't even finish the movie.
The first thing that struck me that I had forgotten is how loud I can turn them up without fatigue. You all know I have built many capable speakers, but these can really keep going up and up. I normally listen at -20 with my wife, -15 by myself, and -10 to show off. Keep in mind I've changed things so many times my MV isn't calibrated to reference. I'd say -10 is getting close to reference. About a month ago I was showing off at -6 and my ears were ringing after about 1/2hour. That was with different speakers. These I had up to -10 last night and they seemed loud but quite at the same time. A weird thing. Most of us have experienced this going from a ghettoblaster to a pair of Polk bookshelves. Then again from those to proper floor standing speakers. Then maybe again upgrading to a big DIY speaker. I feel like I'm experiencing it again.
The second thing I noticed is bad recordings are extra bad. Again, we've all experienced this. But it's on another level. And this isn't always a good thing. I can hear when the recording microphone starts to distort. I'm not sure how I feel about this
The third thing is the midrange clarity. Very clear, very detailed. I have been trying to achieve that with my most recent build using 2 Celestion 12" woofers. It's getting close, but hearing these reminded me how much more work I need to do on those. These things let you hear every little click and pop no matter how far buried in the recording. I really enjoy this. It adds a lot of realism.
To summarize my listening, they were clean, clear, revealing to a fault, exceptionally dynamic with seemingly limitless headroom, smooth, and a lot of fun. I'm looking forward to listening some more. Hopefully tonight. I still have to add some screws to the woofers. Take some measurements. And find a way to box these up for transport to the Vancouver GTG. Then I gotta get them to Tyee who has a van and will take them over.
I took an impedance sweep (I'll post it on the OP soon) as my original never got saved. It tells me my tuning is about 55hz iirc. That was last night, I was very tired. I just saved it and went to sleep. That's with Erich's ports with the dividers where the have to go and with the total outside depth being 12.5". I used one large pillow ripped into 4 pieces as filling. So each chamber got 1/4 pillow. I think this is quite reasonable for an 80hz XO, and if the room dictated it someone could cross at 70 or even 60 if it worked luckily. The tuning would be in the audible stop band, but I don't think it would affect things much, if at all. I was happy to see this because I haven't used Erich's ports. He just gave me the dimension. And that was a long time ago. It's supposed to work, but you always wonder if you didn't make a mistake
The rest of the impedance matched what I was getting before with a brief minimum of about 5.5ohms around 200hz (again, iirc) and the rest hovering above 6ohms. Easily driven by any receiver. Even a cheapie should drive these speakers no problem considering their effeciency. Of course, that wouldn't be optimum, but better than buying a $1k receiver and $100 best buy speakers. That just doesn't make sense.