JBL 250Ti loudspeaker

685jbl.jpgOnce upon a time, in audio's infancy, anyone who wanted better than average sound—average sound during the 1940s being rich, boomy and dull—had no choice but to buy professional loudspeakers. In those days, "professional" meant one of two things: movie-theater speakers or recording-studio speakers. Both were designed, first and foremost, to produce high sound levels, and used horn loading to increase their efficiency and project the sound forwards. They sounded shockingly raw and harsh in the confines of the typical living room (footnote 1).

When high fidelity took off during the early '50s, consumer loudspeaker systems were nothing more than cheaper, scaled-down versions of those professional systems, with much the same sonic flavor but even rougher highs. Then, in 1956, Edgar Villchur patented a new kind of speaker system designed specifically for consumer use.

Recognizing the fact that, in the home, bass extension was more important than efficiency, Villchur's "acoustic suspension" system achieved tremendous LF extension by (among other things) reducing mid- and upper-range sensitivity to match the system's bass sensitivity. By comparison with professional speakers, Villchur's AR-1 had a muted, almost withdrawn middle and upper range, which was far more pleasant to listen to in small rooms. It also launched high fidelity loudspeaker design on a tangent from "pro" sound, and independent evolution in those divergent directions has made the two increasingly different since then. While professional systems grew ever more efficient and forward, so-called audiophile speakers became more laid-back, polite. (Our Bill Sommerwerck dubbed this kind of sound "Boston bland," in honor of its place of origin.) The greater the schism, the more the audiophile community sneered at the "brashness" of professional speaker systems (footnote 2).

But that brashness has proven to be exactly what's needed for music normally heard at very high levels, such as hard rock. The result has been the evolution of two distinctly different kinds of "audiophile" speaker systems: highly efficient, up-front systems for rock enthusiasts, and the laid-back, "polite" systems with exaggerated depth and spaciousness favored by many classical listeners and most audio perfectionists.

Enter JBL
One of the leading manufacturers of professional speakers during the '40s was a firm called Altec Lansing. The Lansing part of the name belonged to a young engineer named James B., who parted company with Altec to form his own firm, JBL. Through the years, JBL has always tried for high efficiency and a forward, gutsy sound in their consumer line, thus earning the undying scorn of all audio perfectionists, who consider "JBL" synonymous with sonic trash. This never bothered JBL as long as "high end" was a mental aberration afflicting only a miniscule part of the population. The masses preferred JBL's kind of sound.

But two developments in the past three years have prompted JBL to reconsider their public image. First, the masses discovered the snob appeal of the High End, and learned from the purists that liking the sound of JBL speakers was—well, it just wasn't done! And second, JBL recognized that digital recordings, whose lack of surface noise is an invitation to play them at high volume, put their own products at a decided advantage over those of most audiophile manufacturers. JBLs could play loudly without burning out; most audiophile loudspeakers can't. The Ti Series of loudspeakers is JBL's bid for a new image—respectability.

The Ti in the 250Ti's model designation stands for titanium; some techniques JBL developed for working with this tricky metal made their new tweeters possible. Titanium has an extremely high mass-to-stiffness ratio. A very thin sheet of it has enough stiffness to behave very much like the ideal piston radiator, with its entire surface area moving in unison. But its stiffness also makes it very brittle, and likely to split when subjected to the kind of forming processes necessary to produce an effective radiating surface. JBL claims to have found a solution, and has even found a way of embossing a pattern of diamond-shaped ribs into the surface of the tweeter dome to increase its stiffness. The result is the new tweeter which shows up on the high end of all their new speaker systems, the 440Ti.

The cone drivers in the 250Ti are described in JBL's literature as "evolutionary rather than revolutionary," which is to say, they're the latest improved versions of earlier designs. But it's obvious that JBL has done their homework.

For example, this is the first time JBL has used polypropylene as a cone material for their midrange drivers, even though most high-end speaker manufacturers have favored it for some years. But JBL's is not the usual polyprope material; it's "doped" with an additive that increases its stiffness and reduces breakup. (One of the recognized shortcomings of polypropylene is that it is too flexible for its own good; its popularity stems mainly from its high internal damping, which minimizes colorations due to resonance.)

These are also the first speakers from JBL whose large crossover capacitors are bypassed by small ones, reducing the effects of dielectric absorption. This is strict perfectionism, but JBL ascertained to their own satisfaction that bypassing did, in fact, improve the sound. The other characteristics of the 250Ti—the very high power-handing ability, the long-throw woofer (5/8" displacement within 10% linearity!), and the rigid enclosure construction—are pretty much old hat; they've been earmarks of JBL products for many years.

I have never much cared for most aspects of the traditional JBL sound: boomy midbass, shallow soundstage, vague imaging, lack of deep bass or really high highs, and (often) piercingly shrill middle highs. But I have always admired their midrange performance. Whether it was their professional or consumer lines, JBL's speakers always had a punchiness and detailed immediacy, an ability to make a voice or a solo instrument sound right in the room, that has not been equalled by any audiophile speakers I know of. "Wouldn't it be great," I thought, "if JBL has retained that middle-range performance, and just augmented it with state-of-the-art performance in those other areas?" I should have known better!

JBL did their homework, all right. In their bid for the perfectionist audiophile market (and who else would pay $3400/pair for loudspeakers?), JBL has produced nothing more than yet another high-priced "Boston bland" behemoth. Every vestige of the middle-range immediacy, aliveness, and incredible detailing that characterized their previous speakers is gone. Instead, what we have are outstanding lows, superb highs, excellent soundstaging, very good imaging, and a total inability to make anything sound real. It's another instance of the baby going down the drain with the bath water.

Perhaps I'm being too hard on the 250Ti. I acknowledge that it is capable of producing prodigiously high listening levels without a trace of strain, and that its highs are simply gorgeous!—silky smooth, open, completely effortless, and free from steeliness, even at the highest listening levels any sane person would tolerate (footnote 3). I acknowledge its remarkably smooth low end (usable to around 35Hz), and its ability to float a wide, deep soundstage around the instruments in simply-miked recordings.

But I also admit that my unusually brusque dismissal of JBL's not-inconsiderable design efforts on behalf of this system stems more from frustrated expectations than from anything else. I expected a system that would combine the old JBL systems' best attributes with those of today's state-of-the-art audiophile systems. I did not expect a total sellout to the audiophile taste for unctuous blahh!

I am, however, constantly reminded by everyone here that my stubborn insistence that reproduced music should sound alive is not shared by everyone—nor, perhaps, by most audiophiles. After all, it wasn't the terminally deaf that JBL surveyed prior to designing this system, but the people who apply perfectionist standards to reproduced sound. So, for those perfectionists among our readers who don't give a sow's teat about aliveness, here is an impassive description of how the 250Ti's sound when driven by the kind of amp they like best: a top-notch solid-state amp like the Electron Kinetics Eagle 2.

I got the most natural sound over-all with the midrange drivers at their maximum setting and the tweeters strapped for 1dB of attenuation. The highs, as I said, are just superb—better in smoothness and freedom from steeliness than those of many electrostatic systems, and in perfect balance (in my listening room) with that 1dB of attenuation.

In general, the sound of the system is warm, a little laid-back, and a shade heavy and loose through the midbass. Bass detail is good but not excellent, having only moderately good delineation of pitch. The speakers' sound varies markedly according to the vertical angle of your ears relative to the midrange drivers, and is most neutral with the ears almost exactly on the axis of the lower-midrange driver. Below that, the sound becomes even more laid-back; above, a pronounced dip develops in the upper middle range. The 250Ti throws a very wide, deep soundstage, with stable but not very specific imaging. Mono sources produce a vague ear pressure suggesting substantial random-phase content, and center bunching is not very tight.

Summing Up
Overall, this is a very pleasant-sounding system that can produce some very impressive sounds, but it lacks the feeling of life that makes the difference between excellent reproduction and literally accurate reproduction. For $3400/pair, I expected more.—J. Gordon Holt

JBL Consumer Products
1718 W. Mishawaka Road
Elkhart, IN 46517
(516) 594-0300

remlab's picture

His "ideals" ultimately kept him from enjoying the high end audio he did so much to popularize. To bad he never learned to loosen up.

JohnnyR's picture

I think he was very down to earth and the best editor Stereophile ever had or will have.

"JBL did their homework, all right. In their bid for the perfectionist audiophile market (and who else would pay $3400/pair for loudspeakers?)"

He would be spinning in his grave to know what passes for "perfectionist" in cost today and the trinkets that go with the "high end" that do nothing yet cost more than a lot of amplifiers.sad

remlab's picture

Getting a musical "fix". His ideals ultimately kept him from getting that fix. It stopped being fun for him. Maybe I'm being unfair. Maybe all reviewers eventually get to that point.

Psychedelicious's picture

This is the sort of article that keeps me coming back and reading Stereophile!

Mark aka "imagic"

phat jbl's picture

By my user name one could deduce I am a JBL speaker fan, if you did that well done. Now days JBL have lots of competition in every sector of the loudspeaker market. Also there are plenty of critics who have heard JBL speakers with the wrong amp to match, as most astute readers here know matching components from source to speakers is as important as the components. 

My first JBL experience was hearing Dire Straits at Sydney Entertainment Centre back in 1986, wonderful. Then a bad experence of hearing some low end domestic JBL in a hifi shop with an amp not up to the task. So I put this argument up, hear some true JBL monitors like the now ancient 4320 with a worthy amp cables and source and be prepared to reset your views. The smaller L100 century that entered the market later on was the same- bad amp and source=disaster. I have tinkered with these two "studio monitors" for years and swear by them. 

The 250Ti, yes at last. To silence or tone down the critics JBLhave made adjustments to the fiestiness of their design. In many modern pop recordings-not audiophile stuff the JBL studio monitors of old find themselves screaming the mistakes at you, this is fatiguing. As the standards of run of the mill music pushed to the masses falls it is hard to enjoy the potential of a true or hard core monitor system. Having heard the 250Ti a while ago on some good equipment I will say they meet the market while keeping the house sound I love. It is very hard to get four drivers working together without too much overlap of frequencies, their drivers are proven performers so its a matter of getting the box and the mix of those components right. Here JBL have a winner for the average punter.

The price is certainly reasonable, there are many speakers out there costing way more being too delicate to wind up the volume on your favourite songs and not fear the fall out. I concur with the 400 per channel rating stated. Even though these speakers are quoted at 91db they along with all the JBL monitors I have listened to since love all the clean unclipped power they can get. My little 4208 monitors used for high level listening without massive bass at night for the sake of neigbourhood harmony have a handling of 75 watts, they have had 250 watt amp working hard on them with no drama, now a vintage Rotel 1412 makes them sing. Perfect match.

If your going to audition them take an album like Paul Simon's Graceland along and ask for a suitably powerful amp to drive them, Paul Simon and many other notable acts mixed down on JBL.  By the way the Beatles used JBL4320's to mix down their later works. 

Biased review perhaps, I Like Wilson speakers for all the same reasons as JBL only they are beyond my budget and are even fussiier when it comes to amplification and source. JBL have gone down market to get market with all of these ipod speakers etc, this is understandable but it takes the sheen of their pro heritage a little. Other makers have done the same but that is business in the 21st century.

JBLMVBC's picture

After reading this JGH review, talking about respectability, one truly wonders why most professional studios were using JBL studio monitors!crying

The line about "aliveness" is truly collector for someone claiming to search for high fidelity reproduction... With such perfectionists in charge no mystery the high end is still a niche market...

Don't waste money in JBL consumer products, listen to a 4343 for a real professional sound experience, and find their latest generation of monitors: they are much more affordable than the overpriced stuff that passes for high end.

AVGUY's picture

I typically don't intervene on a perfectly good conversation however a few issues with the discussion, i believe, need to be revisited. I'm not familiar with your format, possibly it is discussed elsewhere.....

Placement with the 250ti is critical. I dare say more so then my beloved B&W 800's. As you very well know, it would be a exercise in futility to detail how one must set up these speakers, as room acoustics play an all important part. I will tell you that, something as easy as a 2 degree swivel, or a jog to the L or R, or the thickness of your carpet, where your mate wants to install a mirror, or the ceiling fan height, will make or break your sound stage. The critics, were not specific about how or what was done in this arena, so it makes little difference the conclusion.

Pertaining to power, as with any JBL more is always better. Over the years I have incorporated Adcom, Crown, Levenson, Mcintosh and Nakamichi. It is my belief, the tube amps were a bit "bland" yet not Boston Bland. My favorite was the Crown Macrotech, though only 500 WPC, 20-20k @ 0.005%, not the best specs to be sure. This amp is clean. This amp has power, in the form of "balls." Transient response, off the chart. The Levenson was just wonderful though. Second favorite was the PA-7, wonderful sound but not enough power, 200 WPC as I remember.

I purchased my Teaks in 1984, San Antonio, along with several Naks, PA-7, one B460, two ADC towers, and I don't remember it all, but the point is, placement and care.

I have reconed them every 5 years whether they need it or not. Oiled, lemon oil, once a month, kept them away from sun light, tried to keep little fingers from mischief, and removed countless beer cans from top. If I had to choose from all that I possess, what i would sell absolutely LAST, it would be my 250ti's. They are simply too heavy to carry as a homeless man.

If you have a chance, and now and again, the speaker system does come along, buy it. (Not the black special edition unit, they don't really count. Not that their bad, just I've had no experience with them.) Don't even listen to them, No. You are buying a project, the box, the driver baskets, and of course, one of the coolest crossovers ever. Did you know, in the beginning, each one was hand built with participation from "Golden Ears."
Crossovers look like all hell, but thats ok. You can find the x-over specs online. Verify tolerance, replace as little as possible, but if you have to replace a cap or coil or resister or something, do it in both boxes. Recone the drivers. Easier said then done, but take your time. You will find old JBL lovers everywhere. I remember most driver screws are 10-32. You may have to rethread or replace a t-nut or two. I could go on forever. One more thing though. A positive voltage, typically RED wire, connects to BLACK speaker terminal to achieve a forward motion.
JBL for ya!