@elliottbnewcombjr these appear to be some hand made speakers using Infinite Slope components. Not sure they are anything the factory put out unless they are a one-off. If this is the auction on ebay in NY (photos look the same) to me they are way overpriced. I have been lucky to get a couple hundred bucks for any Model 1 or Model 2’s I have ever tried to sell. Two years ago I bought two pair of .6 and one pair of Model 1 from a guy for $350 all in.
Infinite Slope .5 speakers - does anyone have promo material or any specs on this speaker?
I have been a long time Infinite Slope owner (multiple pairs of .6, Model 1, Model 2) and thought I knew all of the brand’s offerings from back in the day (they made a Model 4 I never owned plus various versions of their primary speakers), but stumbled onto a pair of speakers from them that are unknown to me. A previous post a year or so ago on a forum led me to believe these are .5 speakers (which I also found listed in the Audio Blue Book) but I have been unable to find only any kind of promo ads for this speakers, any specs, etc. Google searches don’t even return any images.
I know the company for a short time also made a home theater setup but this doesn't appear to match with those either.
These speakers are rear ported, about 11" side and 18" high. 9" deep. They are very heavy and don’t have the usual Infinite Slope label on the back.
Anyone out there have any of this information in their files someplace? See photo of the speaker. I have to also say that these things are very highly resolving and in certain ways I like them as much or more as any of the other Slope models I have owned. Now I just need to find a spot in one of my systems for them to live permanently.
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No help for the OP's request, but this jogged my audio history memory. Sometime in the 1980s I saw an early review of the JSE Infinite Slope speakers. My favorite local dealer requested a model to evaluate and I bought that. I'm quite sure it was the 1.8. I matched it with an Eagle 2 stereo amp and conrad-johnson PV5 preamp. It was a wonderful combination and only later did I realize it was one of the most musically satisfying systems I've owned. |
Anyone who has ever heard Richard Modafferi's Infinite Slope Crossover, in either JSE or Joseph Audio speakers will never forget it. The Bass Shift he uses in the Model 2's I owned combined with the Infinite Slope 100db/octave crossover is very hard to part with. Since 1973 I have had my current Electrovoice Horns and 15" woofer, now in Rosewood Enclosure. I went to audio shows in NYC for many years, monstrosity after monstrosity in too small rooms, never really wanted anything I heard until I heard the JSE Model 2's: I knew instantly, I wanted/got/had them for years, used McIntosh SS MC2250 to drive them for many years. Went back to tube pre, tube amp, these horns/15" woofers. My friend has my Model 2's, restored, I get to listen to them in the Firehouse he lives in. |
@elliottbnewcombjr thanks for the tips. I might reach out to Source and see if they know anything about this speaker. I don't know why I have not done that before. I also wondered if it was just a speaker designed to be part of a package, but then when I saw it listed in the Blue Book as a separate release that made me want to get more info. These speakers are quite engaging however and fill my room nicely, I am not missing my Focal's I usually use while demo'ing these. |
not finding anything about the speaker OP asked about, Have a nap 1st, or you will nap during! This 24 minute video is Richard Modafferi (ignore the name John Miller that appears) explaining the ’advanced’ version of his Infinite Slope crossover (still used in some Joseph Audio speakers). Recorded 2020? Posted 2023? https://www.youtube.com/watch?v=ZcKHnhWLovQ Here’s a list of his Patents that popped up |
looks similar to source technologies 1.8 wc source loudspeaker technologies website design, 2023, is credited to John Sollecito |
@cdc Yea I have a lot of stuff on the prior models as well, which is why it has perplexed me as to why info on this model has been nonexistent. These .5 speakers seem to have been produced somewhat late in the company’s life (they don't appear in the Audio Blue Book until almost the last issue before that book stopped being printed). The cabinets are not wood, but seem to be very dense MDF. |
