Infinity Renaissance 90 -VS- VMPS RM 30 OR RM 40.

I am very interested in speakers that use planar mids and ribbon tweeters. I have heard and read alot of really good things about the classic Infinity Rennaissance 90's as well as the VMPS ribbon monitors.
Has anyone out there heard or owned both the Infinity Renaissance 90, and the VMPS RM 30 or VMPS RM 40 loudspeakers and/or compared them?
If so, how do the VMPS and the Infinitys compare sonically head-to-head?
Which has the best highs and top-end?
Which has the best mids?
Which is the most detailed and transparent?
Any comments would be appreciated.
Thanks in advance.
Lanny, the older Infinity speakers were quite good in their time. I have heard all the large Infinity systems at friends homes and am quite familiar with them. Of the ones I have heard, I would not rank the Renaissance models at the top of my list. I never heard the 90, but the 80 sounded bright and didn't impress me, even when they were new. Of the Infinity's I've heard, the IRS V was clearly the best, followed by the RS-1b. I don't have experience listening to the IRS Beta, but that could be one to check out as well. Bill Legall at Millersound in PA does the best restorations and upgrades to the older Infinity models.

As you know, I own the VMPS RM 30 and believe it is clearly a more transparent, coherent, and natural sounding speaker than any of the older Infinitys, although it cuts off at around 32Hz in the bass. Through the midrange and high frequencies, IRS V's are the only Infinitys that can hang with the RM 30 (dynamically), though the RM 30's seem more detailed, precise, and natural sounding.

In my view none of the older Infinitys that will fit into your room can match the transparency, dynamic capability, and detail of the RM 30 or RM 40 between 200Hz and 35kHz. The Newform research models like the R645 are also a step down, in case you're wondering, but they are better than many other speakers and can be found for good prices on the used market. Likewise, the Carver ribbons and those from Eminent Technology may serve the purpose, but cannot match the performance of the ribbons that VMPS uses its upscale models.
Thank you,Plato,for the very detailed and helpful reply!
hi plato do you have a number for millersound
or do you think they would look at some kappa 9`s
i live in cleveland
thanks in advance if you get this
Go with the Infinitys!! I have challenged Plato to put his VMPS RM 30s against my Infinitys and so far all I've heard is crickets...

Take care
Doesnt Eminent Technology license the use of their technology to VMPS? I cant say for sure but I think that is the case, if so Plato's statement doesnt add up as far as dissing the ET'S.....although I hear the VMPS is a great speaker, I bet ET's have much more detail overall, but may be thinner in the bass
Hi Chad,

I don't have any idea where you heard that but as good as ET might be, their is no license between companies.

I sometimes wonder were these rumors begin.

All VMPS midrange drivers are purchased and specifically modified by VMPS.

Your bass response assessment is likely correct, but the midrange and HF sonics will be "vastly" different.

The most significant difference is that the ET is a dipolar radiator and thusly incorporates room interaction in its sound. The backwave will "add" room sound to the overall presentation.

VMPS is monopole in operation and will not use room reflection to create the soundstage, since any room reflection distorts the original signal at the listening postition.

Just to point out the most signifcant differences.
I dont know if that was right or not, I stated that with caution, guess I was wrong
VMPS does not license from ET. Sonigistix, the OEM for the panels used now by VMPS was a lisencee of Eminent Tech. When Sonigistix closed shop VMPS bought these planar drivers in large quantities.

Speaking from personal experience ET's are some of the fastest speakers around, with exceedingly low distortion figures (for the LFT VI <.04% HD, 100 Hz - 20KHz, 90 db, 1 meter) as well as some of the select few that can pass a square wave (read they 're transient perfect). And yes they can sound a bit thin at the low end depending on system and set up of course, but nothing that a good sealed sub can't fix.
Well the VMPS RM40s once heard will not be forgotten.
I've owned a pair for a few years now and must say they are amazing. They do it all better than any speaker I've heard, with the exception of the somewhat narrow sweet spot. I'm running mine with a newly aquired DK Design VS.1 integrated amp (this amp is the best sounding amp I've had on my RM40s).
If you can accomadate them, they may do for you what they've done for me.... blow u away!!!
I wonder how the RM40's would stack up against ESS Rock Monitors...