Klipsch Quartet: Suggestions for Setup & Pairing

Didn't answer the pairing question. With my similar Forte IIs, have had good results with a few different amps including a Marsh A400 and a Cambridge Azure integrated. Notably, I got very nice results with my HLLY Tamp-20 12wpc t-amp. You don't need much to drive them, and the Tamp-20 even delivers deep bass.
The t-amp is one of the main reasons I was looking for Quartets or Forte IIs. Big fun, (nearly) full range for chicken scratch!

again, thanks for the input. i will experiment with different amps (i don't have a t-amp, but will try an arcam integrated and/or adcom separates). subject thereto, i have reached some tentative conclusions:
a. placement is critical for the klipsches;
b. type of recording is also critical; jazz and heavy instrumental stuff sounds very natural, while more refined and vocal music doesn't fare as well;
c. soundstage is surprisingly narrow; highs are somewhat constrained and boxy;
d. perhaps as a function of the horns (with which i don't have much experience), driver integration isn't as seamless as conventional speakers; woofer still sounds somewhat disconnected from mids and tweeter.
not sold yet, though I'm still intrigued by 'em and will soldier on. happy xmas to all.

I have heard tubes make Klipsch speakers "open up". The same has been said about t-amps. I have not had my Fortes very long, and now they are put away until after Christmas. Almost all of my listening has been with my Tamp-20. The sound stage is not narrow in my 16' wide room.
I'm curious, is there much of a difference when using the Pioneer and the Mac? Room interface is so important with any speaker. The Fortes do better than some "fullrange" speakers I have used in my room. Have you used other speakers with extended low end in your room? Also, vocals have been pretty good in my case. Don't give up, they can sound darn good.

blkadr:
1.actually, the soundstage was wider with the mac tubes than with the pio solid state, though the pio (about 60 old fashioned watts) had better grip on that wild bass;
2. the predecessor to the quartets in the same room (a large, low ceilinged basement with lots of reflecting surfaces) were late 70s pioneer hpm-100s; i'm also running some spica t50s in the same room. neither the hpms or the spicas posed the same challenge of boomy low end (tho in fairness the spicas don't purport to have much low end in the first place); and
3. compared to the quartets, the hpm100s are less refined at the high end, but throw a much larger soundstage and are better integrated throughout the spectrum; the low end on the hpm100s is tighter, though not as deep.
much to ponder. thanks again.

Corners are the best placement for these-moving them away at least 2 ft from the wall will prevent the passive from exciting the rear wall.
Crites tweeter and mid diaphrams IMHO are a must-as the vocals you mentioned will come alive, and will be very accurate as well as extenting the soundstage beyond the speakers.
The original mid diaphram creates some 'bounceback' in the vocal range-reason for replacement.
The TI tweeter diaphrams are very smooth compared to stock, yet supremly detailed.
Rebuilding the crossover @ Crites alos helps with the final tuining.
I would replace mid/tweeter diaphrams first and decide from there on the crossover.
These aren't AMT Heils in the vocall range-but are very close tone-wise- with the mods.