Just Purchased Infinity RS2B / RSIIb owned RS 2.5


FYI Infinity Fans:
I have lusted after some RS2bs for 20 years after loveing my 2.5s. I thought the 2bs would fill in the middle and keep all of the strengths of the 2.5s. In reading the manual, I was unaware that the 2bs had a bass equilizer (not crossover) that was NOT optional. The bass equilizer has been lost. I hooked up my VTL compact 100s with several preamps & the sound was mud in the bass and boring in the emims/emits. One of the emits is even covered 50 percent, the top one in the front. These 2bs sound like monster cable . . . go figure. Monster cable was used in the speakers. Also, it turns out that ONLY the middle emim is hooked to the midrange control. The middle emim is the only one that sounds like the emims in the 2.5...they are running full out. The top and bottom emim are subdued and they are trying to mimic a good dome midrange....yes the lower vocals are better but who cares?? I have lost the magic of the emims. I have had some Infinity Sigmas in my room and one super emim did a better job than these three emims. Last night I hooked up a couple of transitor amps and the sound was MUCH improved... remember what older monster cable did to good solid state stuff? in the 80s. I guess I'm going to stay with threshold but I own several good tube amps that I love to hear the imaging etc etc. I might be nuts but the improvement I have gained with Kimber Kable 4TC and Audioquest jaguar interconects is lost in the old monster cable wire?? I am probably being to hard on these speakers, but I remember a german saying the 4.5s were the best of that vintage. How are the emims controled in the RS1bs?? are they all hooked to the crossover controls?? To be continued. Thanks for reading. Larry
apfdirtdoctor

Showing 1 response by cassr

So my wife and I are bringing in the groceries the other day at our condo when a neighbor comes up and asks, "Do you know anyone who's into really big, old..." so I'm thinking, "Say speakers, say speakers." And my wife is thinking, "Say anything but speakers." And he says, "...SPEAKERS." So of course, I'm like, "Yup, I'm your man." The wife instantly shoots me the death stare.
He takes me to his garage (which he's obviously cleaning out) where he has a pair of these Infinity RS-2B's. I'm not sure what they are right away, but I know they look exceptional, despite the cabinets not being in the greatest shape -- with some ugly water seepage on the bottom of one and some dings in the wood here and there on both. But the woofers and surrounds look tight, the midrange drivers and tweeters are most intriguing, and he has this EQ unit, which he insist is required.
Anyway, these things are destined for the basement, as I already fought hard enough to get the Maggie's in the living room, nevermind trying to get these into the bedroom. So I've got a section of the basement carved out with two layers of insulation and sound absorbing foam on the ceiling, and a thin, industrial carpet on the concrete floor (for home recording purposes).
I get them set up down there and run them through a heavily modded Dynaco PAS-3 (with nice Telefunken 12AX7's) into the Infinity EQ and then a Carver Pro ZR1600, which puts out a more-than-ample 600 watts per side at the rated 4 ohms (off the top of my head, but I'm sure it's up to the job, since the manual I downloaded says they only need between 75 and 400 watts).
Well, they sound AMAZING, but my question is this: Are these the single least efficient speakers ever made? To really make these things sing, I have to turn the Dynaco preamp volume up past its famous 'sweet spot' at around 12:30 to get them to open up. They can take everything the amp gives them, and it sounds very good at the lower volumes. But is the heavy damping on the ceiling having that much of an effect, or are these speakers just that power hungry?
BTW, I was running a pair of Dynaco A25's through the same preamp and two Dynaco Stereo 70's in mono bridged mode in that exact same space before, and they didn't require any extra juice. Granted, the A25's are much more efficient (I think). I think the Infinities are rated at 87 db, and I would have to guess that the A25's are around 91 (without the power handling, obviously).
Either way, I'm very pleased to have stepped into such stellar sounding speakers for FREE. Thoughts???