Cello was Mark Levinson's brand after he left ML, I don't remember them being connected with AR but a lot of products that are announced or even appear at shows that are never actually marketed.
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ARC-Audio Research Corporation
At least, that's how they used to do it back in the 80's and 90's in the Sunday New York Times classified. That was before the internet and Audiogon and Audioreview.
Also, it the intervening years the status of Acoustic Research has descended to big box store marketing product.
Maybe this equipment was so obscure that no one remembers it. I remember ads in Audio inside the covers announcing this line. There were some pretty sexy shots of the faceplates in the ad. There was to be a preamp with tone control setup simular to and designed by Cello.And no, it wasn't their April issue! I think the relationship between Cello and AR is simular to that of Pass and Adcom. It is possible the equipment was prototyped but never sold. I heard a pair of ESS Transars in the early 80's which I'm not sure were ever marketed.
If I recall clearly, this was the AR Limited line. The products were quite impressive in sound and appearance. I remember a demo of the entire ensemble at Sound by Singer.
Here's a link to some of it: http://www.classicspeakerpages.net/library/acoustic_research/classic_limited_series/classic_limited_series_ads/ar_limited_ad/ar_limited_ad.html
Thanks Kal, you hit the nail right on the head. I've never seen any for sale on the used market. Is it in the BlueBook? The ad doesn't mention the Cello connection but I clearly remember reading about one, maybe in a CES report in one of the mags at the time.The 'Spectral Equalizer' mentioned in the ad is simular to what Cello offered, isn't it?
Kal's link leads to the answer. I gather each piece of equipment in the Limited line was designed by a leading equipment designer of the time. The speakers were designed by by John Buzzota, Dave Cahill, and David Day of Day Sequerra. The amp and equalizer were designed as Drjoe explained,Dan D'Agostino of Krell and Mark Levinson of Cello,while the preamp was designed by David Day of Day Sequerra. I wonder how many sets were made.
I was just researching the AR Limited Model 3 and ran across this thread. I know it's old, but if anyone reads it or cares, it is interesting that I have a whole "kit" w/plans version of these that were AR stock bought out when AR aborted that hi-end endeavor. I have no case work but do have the 4-Dyn D76's, 2-Dyn D260's, 2- proprietary AR 12" woofs & the original genuine crossovers.. large things of beauty! Have full plans with large plastic to scale stencil type affairs to aid in the build. It is all brand new and been tucked away since I bought it all from "Mluong" on e-bay in '06. I'm quite happy with the Innersound stats I use, but have been debating building them (I am a cabinetmaker) or perhaps try to sell kit, or perhaps part out? I really don't know what this stuff may be worth. Any thoughts by anyone? Thanks, Rob
Cello chose a very odd reference design for the Amati in the AR LST. I've never heard the Amati, but I did listen extensively to the LST back in the heyday of AR, KLH, EPI and Advent. Gee, what a dismal-sounding speaker. It wasn't just bad - it was really bad, a landmark of badness. Diffuse, blurry, veiled - how much more can one stand? The AR-3A, using fewer of the same drivers, sounded clearer, and even it was woefully out of date by the time the KLHs and Advents rolled along. I think the LST suffered from destructive interference from all those tweeters, being almost Bose-like at least in the forward hemisphere of radiation. That autotransformer may not have been very good either. That ML "designed" the crossover of the Amati hardly adds any hope that it might be better.