StevieQ

With all due respect, you haven't got a genuine RF-7II in your case. Your experience with your modified version may not show the higher sound stage that a true RF-7 II shows.

Haven't seen that problem with my RP 280 + RC450c setup. It sounds accurate height wise.

One thing I do want to mention is that the RF-7 II creates a very wide and HIGH soundstage. I recall Youthman you made this observation in one of your videos. I have also observed this same phenomenon. A wide soundstage is welcomed, but the extra height in the perceived soundstage, while not a problem when applied to music listening, will distort the accuracy of the soundstage in a home theater application. Let's say in the movie the actors are talking while in a sitting position. Ideally the viewer listening to the dialogue while sitting down should perceive the sound as coming from ear level, but the RF-7 II will make it sound like the dialogue is coming from two to three feet higher than ear level. This is another reason why I think (there goes that word again! ) using the RC-64 II will minimize this problem.

Agreed, that's why some experts advise placing the center channel vertically rather than horizontally to minimize the effects of lobing.

I do own an RC-64II that I bought it along with my RF-7 II speakers, but I decided to use my RF-7 II in 2-channel music only rather than for my home theater, so the RC-64II is still boxed up. For my home theater, I am happy with the RP-280F L/R + RP-450C center channel so far. I think if you ask the Klipsch designers they will probably agree with my conjecture that the RC-64 is optimized for speech while the main RF-7 II/III is probably not. However, I generally agree with your statements in most cases, EXCEPT that the discussion at hand is in reference to the RF-7 II setup. My personal experience with the RF-7II is that it sounds lacking in the mid-range, including the human voice range. That's why I think the RC-64 II will be a better option in a home theater application since it's presumably optimized for speech. By the way, I also have a pair of 1970-era La Scala. I may move the La Scala into my theater room because I like the rich sound, especially in the mid range. It's not entirely correct to project your positive experience with a three-speaker La Scala setup onto the RF line to conclude the same positive result would be produced with the RF-7 II. The La Scala and the RF-7 II have different frequency response characteristics relative to all-important vocal mid-range frequencies. The La Scala sounds very rich and mellow in the midrange but the RF-7 II does not (at least not without some serious equalization).

I think you'd have better results with the 2 RF7II + RC64II configuration rather than 3 RF7III or 3 RF7II. The RC64II (or RC64III) is a 2.5 way speaker and will give fuller, more mellow sounds, and will more faithfully replicate human voices than the 2-way RF7 can. The center channel is where most speech sounds are played and the RC64 is probably optimized for human speech. Why go against the intended design of the RF line by substituting a main speaker in the center channel in home theater applications when there is a center channel designed specifically for that purpose?

Youthman: I was actually referring to customer reviews rather than professional reviews. I couldn't find any review of the RF-7 III by actual customers on any of the authorized dealers and traditional outlets such as Amazon, Crutchfield, eBay, etc. The only customer review, only one so far, is on the Klipsch site.

The RF-7 III must be be selling VERY slowly. It's been almost a month or two since the III went on sale and there has been only one review of it so far. There are two plausible explanations for the slow sale. One is that most current potential buyers of the III already pulled the trigger on the II because of the heavy discounts on the II in the past six months. I am one of these people. It will take some time for another wave of potential buyers to build up again. The second plausible explanation is that the RF-7 III is much less visually appealing than the RF-7 II. The RF-7 III looks like a beefed up version of the RP-280F but selling at 3x to 4x the price. The styling of the RF-7 III doesn't give an aura of fine furniture the RF-7 II does. The cherry stain on the RF-7 II is FAR PRETTIER than on the RF-7III. In my opinion the RF-7 III looks really cheap compared to the RF-7 II. If Klipsch would incorporate the improvements found on the RF-7 III into the body and styling of the RF-7 II they'd have a real winner.

I will tackle the woofer chamber clean out project next week to see what it can do and also to examine the identify of the 15" woofers to see if they are original. For what it's worth, when I knocked on the lower exterior side walls with my knuckles, the tone of the echo matches the muddy hollow resonant sounds I referred to earlier. This is why I believe it's a resonance issue, not that other issues may not also be present, such as debris buildup. Also when I played bassy music, it's the lower exterior side walls and the lower back wall that have the most vibrations. This again points to resonance problem. I will also try the internal bracing method DizRotuz showed in the pictures. I am very new to Klipsch speakers. I recently bought a pair of RP280F for my home theater, and a pair of RF-7 II for my living room. I really like my RF-7 II after correcting some deficiencies with a 31-band equalizer.

I recently picked up a decent pair of 1980s/1990s vintage La Scala on Craigslist. One tweeter was blown and requires a diaphragm/coil replacement (no biggie), and the 3/4" plywood finish is very ugly, but the pair of speakers is otherwise in very good shape. It comes with AA crossovers. Everything about the speakers is nice - except for the sound coming out of the 15" woofers. It has good treble and very strong and rich mid range, but the sub-400 Hz frequencies coming out of the 15" woofers are just exceedingly muddy and boomy. The muddy echos are highly irritating. The muddiness must be because of cabinet resonance on the 3/4" plywood. What can I do to eliminate the resonance? I am thinking of applying 12"x12" marble or granite tiles to the interior and exterior surfaces of the woofer box to stiffen the walls to eliminate resonance, but the tiles would add a whole lot of weight. Are there other solutions I can try?