• The SIG-LCR 5s get closer to blurring the line between traditional floor-standing loudspeakers and in-wall speakers than anything else I've encountered, save maybe the Meridian 300 series and PSB's reference in-walls.
• The purity and naturalness of the SIG-LCR 5s is remarkable. From the top down, I found them to be nearly indistinguishable from my reference Signature S8s, with the exception of overall bass extension. The pure beryllium tweeter is among the best high-frequency transducers money can buy and the fact that it's in a sub-$5,000 in-wall is amazing. The SIG-LCR 5's midrange and lower midrange is rich, pure and natural, with zero artificial warmth or bloat to it, making it suitable for a wider range of musical and cinematic tastes. When it comes to film dialogue or female vocals, you'll be hard-pressed to beat the SIG-LCR 5s.
• Because of the LCR design, the seamless nature of having three SA-LCR 5s across the front of your listening room or theater is astonishing. I was unable to discern where one speaker ended and the next began. The surround sound performance is staggering and more dimensional than that of almost any in-wall on the market today.
• Dynamically, the SIG-LCR 5s are class leaders, going louder with less power and doing it with more finesse than any in-walls I've heard to date. I was able to make the SIG-LCR 5s dance and sing beautifully with a $1,000 receiver, though if you mate them to, say, a pair of Anthem separates or the like, you'll have a weapons-grade music and movie system for the price of some floor-standing two-channel speakers.
• The Backbox, while cumbersome during installation, basically changes the SIG-LCR 5s from sounding like in-walls to sounding like true floor-standing speakers, isolating them from the wall, providing them with a ridged skeleton and adding to their overall musicality.
• While the SIG-LCR 5s plunge very low, a system of this caliber deserves a subwoofer or two. You can go for Paradigm's own in-wall subs and have a truly hidden, cost-no-object home theater. Only it won't cost you as much as you think.
• I don't like it that Paradigm doesn't just include the Backbox in the SIG-LCR 5's asking price. I know it probably looks good to have a speaker priced below $3,000, but it's not the true cost of the speaker when you have to purchase a $400 add-on box just to install it. Just call it $3,500 out the door and be done, Paradigm, you're still cheaper than the competition and far better-sounding.
• Due to their complex installation and need for professional help, be it a contractor or installer, you have to figure construction costs into the total system price when configuring your budget.
Though not the least expensive in-walls on the market today at roughly $3,500 each (including the required Backbox), the SIG-LCR 5s are among the best-sounding in-walls money can buy. If you're looking for a true audiophile-sounding loudspeaker in an in-wall package and have the budget for some decent electronics to go with it, then you'll be hard-pressed to do better than the Paradigm SIG-LCR 5s, for they're simply that good.
• Read a review of the PSB CW800e in-wall speaker system
• Read dozens more in-wall speaker reviews from Niles, Paradigm, B&W, Noble Fidelity, Wisdom Audio and many others.