Acoustic Research research-tsw-110 (1987)

Name: Acoustic Research research-tsw-110
Brand: Acoustic Research

Acoustic Research TSW-110 (1987)

The Acoustic Research TSW-110 is a floorstanding loudspeaker that hit the scene in 1987 as part of AR's ambitious TSW (Total Spectrum Wave) series. This was a fascinating, slightly awkward time for the brand—trying to hold onto its legendary acoustic suspension soul while giving the market the bigger, louder speakers it craved. The TSW-110 is the result: a speaker that feels like a sincere engineer's compromise. It's got more kick than your dad's old AR-3a, but it hasn't yet sold out to the bloated, boom-and-tizz nonsense of the '90s. For my money, it's one of the most usable and honest speakers AR ever made from this era. It’s the kind of speaker you buy to *listen to music*, not to fuss over or show off. A proper workhorse. Honestly, if you find a pair, grab them. They're the unsung heroes of late-80s hi-fi, the kind of gear that reminds you why you got into this hobby in the first place.

Specifications

Model	TSW-110
Years Produced	1987–1990
Type	2-way, bass reflex (rear port)
Woofer	10-inch polypropylene cone with butyl rubber surround
Tweeter	1-inch ferrofluid-cooled soft dome, polyester film diaphragm
Impedance	8 ohms nominal
Sensitivity	90 dB (2.83V/1m)
Power Handling	150 watts program (75 watts RMS)
Frequency Response	38 Hz – 22 kHz (±3 dB)
Crossover Frequency	2.2 kHz
Bi-Wiring	Yes (dual binding posts)
Dimensions (H×W×D)	24" × 10" × 13.5" (610 × 254 × 343 mm)
Weight	38 lbs (17.2 kg) each
Finishes	Oak, black ash, walnut vinyl veneer

Historical Context

The TSW-110 arrived when Acoustic Research was at a real crossroads. The classic, sealed-box "New England sound" was seen as too polite and inefficient for the booming rock and home theater crowd. The TSW series was AR's answer—a full embrace of the bass reflex design for more output and deeper extension. Let's be clear: this was a big deal for a company whose identity was built on acoustic suspension. The TSW-110, with its rear-firing port and that chunky 10-inch driver, was AR saying, "Okay, fine, you want bass? Here's your bass." But they did it their way. The cabinet is still solid and dead, the drivers were newly developed with serious materials science behind them (that carbon-loaded polypropylene cone is no joke), and the crossover was designed for precise phase alignment. It's a modern speaker built by a company with an old-school conscience.

Sound Signature

Forget the warm, pillowy blanket of a vintage AR-2ax. The TSW-110 is a different beast—it's articulate, punchy, and surprisingly agile. That 10-inch woofer, freed by the port, delivers bass that is tight and goes satisfyingly deep, though it can get a bit one-note if you really crank it. The midrange is where the AR DNA shows up; vocals and acoustic guitars sound natural and present, not hyped or recessed. The tweeter is the star for me. That 1-inch soft dome, cooled with ferrofluid, is smooth as silk. It's detailed without being etched, and it never gets spitty or harsh, even on bad recordings. The overall presentation is balanced and neutral with a slight warmth. It images well, throwing a decent soundstage, and it works with practically any amplifier from a 30-watt receiver to a beefy 150-watt power amp. It's not the last word in absolute resolution, but it's musical, forgiving, and just plain enjoyable. You can listen for hours without fatigue, which is more than I can say for a lot of its brighter, more "detailed" competitors.

Maintenance and Restoration Tips

Okay, let's talk about keeping these old soldiers on the march. The good news is the TSW-110 is generally robust, but it has a couple of classic failure points. First, a correction to the common myth: the woofer surrounds are not foam! They're butyl rubber, the same long-lived stuff AR was famous for. So, if your bass sounds off, don't automatically order a refoam kit—check for a torn surround or a stuck voice coil first. A re-foam on these is usually a case of someone "fixing" what wasn't broken.

The real Achilles' heel is the tweeter ferrofluid. After 35+ years, it turns into a sticky gunk that dampens the tweeter to death, robbing you of all that lovely high-end detail. Cleaning and replacing the fluid is a delicate operation, but it's like getting a new speaker when you're done. If a tweeter is silent, check this before you assume the coil is blown—nine times out of ten, it's just gummed up.

Cabinet-wise, these were well-built. The vinyl veneers (usually oak or black ash) can be cleaned up with a damp cloth and some Howard's Restor-a-Finish for scratches. The dual binding posts are great for bi-wiring if you're into that, but just make sure they're clean and tight. Internally, the crossover capacitors are probably drifting out of spec by now. Replacing those old electrolytics with new poly films is a upgrade that really tightens up the sound, especially in the midrange clarity. It’s not mandatory, but it’s the kind of project that makes a cold Saturday afternoon feel worthwhile.

Collectibility and Market Value

Let's be real: you're not buying TSW-110s to flip for a retirement fund. They're "working-class collector" speakers. You find them for a song because someone thinks they're just another 80s black box. A simple restoration—cleaning the tweeters, maybe new caps—might cost you $50 in parts and elbow grease, resulting in a pair that sounds fantastic and is worth maybe $250-$400 on a good day. The value is all in the performance, not the pedigree. They're not the coveted classic AR, but they are, in many ways, a more practical daily driver. For someone building a first vintage system or wanting a honest, amp-friendly speaker that won't break the bank, the TSW-110 is an absolutely brilliant choice. They're the unsung heroes of the late-80s AR lineup. The kind of speaker that makes you wonder why you'd ever bother with anything new under a grand. Honestly, they’re a steal.