Mmm, okay, back on track to stereo setups then. I've got a few stereo rigs, so I'll make two posts.
The more unusual one is this:
In our music, fitness, and game room it's an actively quad-amped four-way in a JBL L250 cabinet. The woofer is replaced with the most current version of the venerable JBL 14" driver, the 8" and 4" drivers are JBL inverted Ti domes, and the tweeter is a 1.5" Ti dome. The loudspeaker managment is done by two BSS 366T Omnidrive compact plus
units, and the individual drivers are powered by Hafler pro amps: an SR2600 (2x600 into 8 Ohms) for the woofers and three SR300 (2x300 into 8 Ohms), one for each pair of 8", 4" and 1.5" drivers. The amps are behind the left speaker. You can also see the color coded XLR interconnects to help me avoid connecting the wrong things together.
Sources are CD, SACD, DVD-A, and Apple Lossless through a Citation pre.
The pictures aren't great, but you get the idea.
With 3000 carefully controlled Watts the pair can get really loud without distorting, and for the sake of one's ears the outer limits should not be explored. It took a couple of months to get everything pretty close to right with hours spent measuring, listening, measuring again. The designer of the original L250 gave them a listen and made a recommendation for improving the midrange to tweeter transition, and WOW! it really brought everything right together. Anything I want to throw at these speakers sounds wonderful, and no sub is used.
The black JBL XPL200A pair in the middle is actively bi-amped, but just doesn't really compare. It handles sound for the Wii when we exercise or game.