These speakers put out an incredible sound, full rich and detailed. Easy to obtain not just window shaking volumes but the actual brick exterior, with clarity, if youare in to that as sometimes I am. They are also capable of a warmth and depth at very very low levels.I have compared these to psb gold i Mirage 1090 bi polar as well as variou speakers by energy ditton paradigm yamaha and kef.These infinite slopes model 2 with 5 drivers always come out on top.They are big but so easy to move with the rollers.I have amps on top of each makes for easy access and hook up. Great looking as well.My wife wants me to downsize but says we are never selling these.Very efficient speakers can be driven with 30 watt amp. I am currently using a yamaha m4.If these model 2s with the 5 drivers ever are available do not hesitate you will be exttremely pleased and never need to upgrade.

I bought a set of JSE Infinite Slope Model 2 speakers off Ebay. The speakers weigh 125lbs each. Cool thing was...the guy selling them lived right down the street. I love these speakers. I believe most if not all of the drivers were Dynaudio. Well I've replace all the drivers...most importantly the tweetes. I installed Jantzen tweeters. What a beautiful sound! I'm powering these things with all Adcom. The amp is an old GFA-555. These speakers are crystal clear...and if you wanna turn em up...holy moly! If you can get your hands on em.....enjoy man!

Ran across this by accident and thought I'd add my review. I'm the original owner of the Infinite Slope Model 1's in piano black and red grilles. I purchased these in 1986 for $920. Shortly there after I bought the spiked 5" medal stands - good investment as the OEM casters were a weakness. I used these as my primary speakers until they were replaced in 2000 by the Silverline Sonatina's which I paid $3800. Compared to the Silverlines the Slopes hold up pretty well. Greater base extension but don't perform the disappearing act of the Sonatinas. While both have soft dome tweeters the Sonatinas are more extended and a good bit smoother.

I drove the Slopes with a modest NAD amp until 5 years later I brought home a Dynaco ST-70 and found out what they could really do - wow! I later upgraded to a Golden Tube Audio SE-40. After getting the Silverlines I upgraded to a VAC 35/35 integrated amp [great product] and finally the Moth Audio 45 SET I'm currently using. I never hooked up the Slopes to either of the latter two but I'm sure it would have really swung with the PP VAC.

The Slopes have been stored for a number of years but are currently seeing duty in my home theatre. The speakers have performed flawlessly, the only mods were to replace the stock binding posts with solid Rhodium. I aced the red grille covers years ago as the glossy piano finish is too beautiful to cover.

Ran across this by accident and thought I'd add my review. I'm the original owner of the Infinite Slope Model 1's in piano black and red grilles. I purchased these in 1986 for $920. Shortly there after I bought the spiked 5" medal stands - good investment as the OEM casters were a weakness. I used these as my primary speakers until they were replaced in 2000 by the Silverline Sonatina's which I paid $3800. Compared to the Silverlines the Slopes hold up pretty well. Greater base extension but don't perform the disappearing act of the Sonatinas. While both have soft dome tweeters the Sonatinas are more extended and a good bit smoother.

I drove the Slopes with a miodest NAD amp until 5 years later I brought home a Dynaco ST-70 and found out what they could really do - wow! I later upgraded to a Golden Tube Audio SE-40. After getting the Silverlines I upgraded to a VAC 35/35 integrated amp [great product] and finally the Moth Audio 45 SET I'm currently using. I never hooked up the Slopes to either of the latter two but I'm sure it would have really swung with the PP VAC.

The Slopes have been stored for a number of years but are currently seeing duty in my home theatre. The speakers have performed flawlessly, the only mods were to replace the stock binding posts with solid Rhodium. I aced the red grille covers years ago as the glossy piano finish is too beautiful to cover.

Great Infinite Slope speakers in black lacquer finish. Tweeter on one is shot. Does anyone know how I can replace it? Thanks.

Great range and clear sound throughout regardless of power level.
Heavy enough to be sure they wont vibrate or walk away from the corner you park them in

I dont have another pair of them !!!

These things weighed a ton and I did not want to be bothered like most of the people at the auction. Being a Musician, I had to know if they worked so I figured $20 wouldnt kill me to find out. Got off the truck and into the studio, hooked them up to your basic #10 cable straight out of the amp that powers sound rack.
I know there is a God, for I would not have these if there wasnt.
The Hi's are up there, and the bottom end is way down low in the darkeness.
These speakers from what I have been able to find on the web are close to 20 yrs old. With that being said, at my age I am fairly sure I will never add speakers to my studio monitors again.
Pushing them with my smakk Hafler TA1600 they seem to be setttling in right at home with the rest of my racked gear.
These are not the kind of speakers the average person would even notice a difference with unless they have a really serious HQ music backround.
If you want to hear the violin whisper and the cello hum these are for You even at 18 yrs old, they will stop me from shopping for years to come.

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C/V Bose, B/W and a long list of run of the mill studio standard gear.

Very revealing Nicely balanced highs, mids, lows Musically very satisfying. If I had the time and inclination to sit still, I could listen to them all day long. Potential for sounding even better (I believe) but...I'll settle for what I can afford to hear

It's strength can be its weakness...very revealing

Reviewed: JSE Model 2a (10" & 12" woofers instead of 2 sets of 10's) I purchased the Model 2's (demos) in 1989, and I will probably pass on before the speakers do. I'm not a true "audiophile" so these are purely subjective opinions. Warm, smooth and sweet (oops, I don't mean to bring sex into this). Anyway, I love them. I never knew the potential of these speakers until I upgraded the amp, preamp, and interconnects. Years ago, I heard that they didn't need a subwoofer, but I never understood what that meant until recently. I now hear on some CD's (or should I say "feel" more than "hear") bass I never knew existed. Not only that, I never knew the high end existed like it does now! Sparkling clear on some CD's (and you discover which CD's are the better quality...some of my favorites aren't so great after all, and some that I never cared to listen to are becoming my new favorites). Those speakers disappear in a beautiful wall of sound I never experienced before. There's a new meaning for me in the saying, "garbage in, garbage out" (no, I won't say what I had before upgrading...I don't believe in bad-mouthing anyone...the previous equipment just didn't match well with the JSE's). I can't believe what I was missing for the past 15+ years. These are (I think) very revealing speakers...bad CD's sound bad good CD's sound better...if there's bass, you'll hear or feel it, same goes for the highs (except you won't feel those). I'm willing to bet I still haven't heard their full potential. I may never be able to AFFORD to! If you manage to get a pair, keep in mind that these may be a bit fussy about what drives them (my present equipment: Musical Fidelity A3CR amp, Bryston BP-20 preamp, Linn Genki CD player, Audioquest Gibralter speaker cables, Audioquest Vampire interconnects (will be upgrading to Jaguar hopefully), Audioquest and Kimber Kable power cords. Finally, a comment I heard: An audio dealer told me that I would have to spend about $6,000 to get speakers of comparable quality to the Model 2's. True or not, I don't know. I'm sure there are better speakers that may cost less than that but, for me, these are priceless...music to my ears.

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Again, I don't want to bad-mouth the equipment that wasn't a good match for the Model 2's.

Can handle TONS of power and at LOW volume the bass still shakes the floor so low listening is excellent

Delicate black lacquor finish, and keeping the finish clean EVERYONE want to touch them with there greesy fingers. like petting a new puppy.

HUGE speakers, they have a 12" a 10" a 6.5" a 3" and 1" (5 speakers in all) I did notice feedback BUT that was due to being to closeot the turntable. Excellent listening and performing speakers. Took two of us to load and unload but they have wheels. The seller said they have to go or hes NOT allowed back in the house (this came form his wife) so I got them CHEAP. black lacquor ( or however you spell it) there called the JSE infnite Slope and ther about 4' tall. PS did I mention ($50.00) wich I could post a photo

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Allsion one various componenets

I purchased my model 2A's in Sept of 1991 and after 10 years i can safely say that these brutes have never let me down yet.Although i purchased them used for less than half of what they were new(2200)i must say that the price does not in any way affect the way these perform.Its biggest strength perhaps is to have the genius of its crossover engineering credited to none other than Richard Modaferri of Mcintosh fame.The model 2A is a highly sophisticated 4 way system for those seeking a very fine speaker system regardless of size or price.The 2A's make full utilization of its Infinite Slope crossover and Phase Shift bass loading for unparalled uniformity and deep bass extension.Each driver above 150hz is crossed in and out using crossover slopes near 100db per octave eliminating cancellations and interference effects so common in systems this size.Instead of getting the common wall of sound effect found in most large systems,the 2A's precisely integrates all of its driver units into a cohesive line source for,in my opinion,hard to match clarity and imaging.In addition,the Infinite Slope crossover provides far greater power handling and dynamic range witout distortion making them the perfect choice for todays newest digital recordings and players.I alternate running them from a Mcintosh MC2255 to a Perreaux 3000B.Each has a power output of 250wpc and 180 wpc respectively although the MC 2255 pushes their limits a bit more.If you have the room for them and can find them at a price that suits you,dont pass these babys up! You wont be dissapointed!

When describing the 2A's to knowledgeable audiophile friends it is inevitably asked aren't there phase shift problems with crossover slopes as steep as they have.JSE's answer to that is to just have a minimal phase shift designed into the crossovers so that all of the three main drivers are operating in phase with a MAXIMUM of 10% phase shift.The advantage of using such steep crossover points is that each driver need only operate in a clearly defined freq range,with which they are comfortable.There is very little overlap,if any,in freq response from one driver to the next and this is claimed by JSE to greatly reduce distortion and increase the dynamic range and power handling abilities of this fine system.So in all,not much weaknesses to discuss here!

Overall i found the 2A's to have many strengths and few weaknesses.While they may lack the transient snap and immediacy of electrostats,they are a real bargain and certainly worthy of comparison to loudspaker systems that costed twice as much.Anyone out there owning them will be sure to agree!

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I also run a pair of McIntosh XR-7's,AR91's,and Klipsch Forte II's.

Great bass & midrange

very thirsty speakers and inefficient

In 1989 these JSE 1.8 speakers were $2300 retail which I paid 1500 as demos in july 1990. Very heavy 110 pounds each, with a black laquer finish even under the speaker where most speaker manufacturers could skimp on. Smooth bass, with great crossovers between mid & treble. I use B&K ST-202 amplifiers bi-amped, which these speakers need all the power they can get (I have 300 watts per channel into them and sometimes ask for more). These speakers can easily take 700-1000 watts of power with no problem. Dynaudio tweeter is very neutral sounding, with very good soundstage, as long the speaker is not near any walls or other objects. I recommend bi-amping these speakers since I had only one amp to them, and the speakers distort badly with high bass passages.

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