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FOR SALE: Infinity QRS Speakers with Electronic Controller - Super Rare! Featured
Infinity QRS Speakers w/ Electronic Controller – Super rare!
For your consideration is a very special Infinity Reference speaker system. One of less than 20 ever produced by the legendary manufacturer. This ad may be the second you will ever have seen listing this extraordinarily rare statement product loudspeaker system. I guarantee you will never see another in probably ten more years if ever!
Please note that the original price of these limited edition Infinity speakers were back in 1978 a princely sum of $6500.00 - which in today's price due to inflation (Annual inflation over this period about 3.54%) would translate to over US$25,000.00 - this, of course, does not include all the additions added to the improvements to the speaker system. A speaker such as this would easily go over $40,000.00 - Kindly read below:
- Back in the late 1970s Arnie Nudell, then president of Infinity, decided that the original configuration of the QRS with a 15” Watkins driver was too slow to blend well with the ribbon/planar midrange drivers and tweeters. So, he built just a few with 16 ea. 5-1/4” drivers in the sub cabinets. The entire system, called the Infinity Quantum Reference consists of 40 EMIT tweeters, 6 EMIRM midrange, and 32 5-1/4” dynamic drivers.
Short of an IRS V these are the best speakers bar none that Nudell ever made for Infinity. The soundstage is amazing, the tonal quality is to die for and leaves any and I mean practically any state of the art speaker as a toy. The Strathearns have a superb midrange and those EMITS are longer than the later ones with no shortcuts done in their engineering. They are as smooth as any tweeter ever made. Old audio collectors must know that the late Harry Pearson of the Absolute Sound considered this among the most natural speakers ever produced on the planet. He owned these and lost them in a terrible fire many years ago!
Musical instruments sound as real as you could possibly hear whether you play vinyl or digital media.
But this is not an ordinary set. In this system, all the drivers have been rewired with the best 6N Acrotec copper wire from Japan and Sidereal Caps I could find done by an expert Speaker rebuilder in Los Angeles. The speaker must be bi-amplified. For additional flexibility in the very high frequencies, the system includes a super ribbon tweeter (used on the Magnepan MG-20) for frequency response up to 40,000 hz. The super tweeter can be shut off at will or turn on with selectable high spots at 12Khz, 15Khz and 20Khz. The bass sections include a special Microscan Anti Resonance system for improving the bass performance which goes way down on this speaker to 23HZ. I have always preferred tubes for the top and solid state at the bottom.
These speakers separate into 3 sections: high and mid frequency panels (76"hx11"wx1"), sub cabinet(36"hx24"x24"), and image deflection panel wing(40"hx24"x1").
The system comes with an external Infinity QRS electronic crossover which necessitates two stereo amps to drive the system as shown in the picture. Passive crossovers are inside the speaker system to divide the Strathearn Ribbons from the EMITS. All grills in excellent shape.
Since they are too big to prep for shipping it must be a local pickup. Sorry… Only practical way to do this. I do not want damaged risk with delicate drivers as these.
Easily moved in a van or pickup truck since they can be disassembled. I live in Tampa, Florida.
I have been the original owner of these bad boys for all these years and it has always been pampered in a dedicated music room built to my specifications. Relocating to smaller surroundings due to retirement. The drivers are practically indestructible. No buzz or distortion. Incredible dynamic range. Also, the woofers would never rot since the surrounds are made of butyl.
I will not entertain ridiculous offers due to the rarity of this speaker and a living testament to the art and genius of Arnie Nudel. The rating is just due to age. To the lucky new owner, I will include two spare Strathearn drivers as backups.
Other detailed pictures can be arranged upon request.
Oct 14, 17 2:40pm
Specially dedicated non-smoking music room with central air conditioning
This ad was originally posted on US Audio Mart.
Original owners' manual. Electronic crossover control unit.