A lot of good information here, I especially like what Seth had to say. I do have an Infinity center channel speaker which looks pretty much identical to their current C252, here's my specs:
Specifications:
* Frequency Response: 58 Hz - 20 kHz +-3dB
* Sensitivity: 89 dB @ 2.87 volts, 1 meter
* Power Rating: Use w/amps rated between 20 - 150 watts RMS for Center Channel
* Enclosure Type: Acoustic Suspension
* Cabinet Finish: Black Pica
* Crossover Frequency: 4.5 kHz
* Nominal Impedance: 8 ohms
* Drivers: Dual 5-1/2" Polyproplene woofers, 1/2" Polycarbonate tweeter.
* Magnetically shielded for video applications.
* Dimensions: 18-1/4" wide, 7" high, 5-1/2" deep.
I brought it over to a friend's house to check it out on his Denon AVR, we substituted it for his Klipsch Quintet CC and it sounded just fine on his setup, much sharper and clear than on mine. In my setup, I have a home-built stand (I am a decent woodworker with a nice woodshop) that is about 60" wide, 20" deep, and about 21" high, rolling on eight round casters. AV equipment (AppleTV, DirecTV, BD-Player, AVR) located on either side behind frameless glass doors, CC pocket in the center under a shallow drawer. I've toyed with the idea of a DIY project, but its probably easier to just buy, because I'd probably build speaker boxes out of walnut or rosewood plywood rather than MDF and it'd take more time and money to do it "my way" LOL.
I thought perhaps keeping the Infinity and dumping the rest would be productive if I could find some nice Infinity towers to compliment the CC. But if I found some well-kept Klipsch towers I have no special attachment to the Infinity... I could most likely find a Klipsch CC as well. And no... I won't buy used what I can't hear, so the first question I ask after whether the speakers advertised are still available is whether they can be demonstrated. The only possible exception to that would be if its a specific model that I have already heard and its a decent deal... I might make an exception. I'm inclined to go with towers mainly because most of their sound is starting at the centerline of the 65" TV and they would be easier to "aim" at our preferred seating setup than bookshelves.
In the past I have dabbled in this stuff, built the Dynaco Tube kit back in the late '60's, had the Thorens TD turntable, Wharfdale monster speakers to listen to my vinyl jazz collection. Moved to a Marantz Quadraradial with the scope and beautiful Pioneer HPM 100's and a Technics single-play turntable, still have that TT hooked up to an old Nikko and some junk speakers to try the vinyls in the basement when my wife isn't bugging me LOL. Sadly, I will probably sell much of that collection on eBay, but I'm a realist and hardly have a spare minute to just sit and listen to music anymore.
Probably the smartest move right now is to remove, photograph, and advertise the Bose setup, I can probably jury-rig something in the interim or revert to the TV speakers LOL. When I have enough posts, I guess I can post a schematic of my room. I'm sorry to say that I don't have a hard/fast budget, but if I can scrape together $500 between pocket money and selling the bose/infinity stuff... that might be it give or take $100. I know that sounds meager but I have other interests that drain me even more.
BTW, I am curious to hear what constitutes red flags to watch out for.