Linn Kan (1979–c.1994)

Name: Linn KAN
Brand: Linn

A four-and-a-half-litre sealed box that made a generation of amplifiers prove themselves, and rewrote what a small speaker could do against a wall.

Overview

The Kan is a box roughly the size of a thick dictionary - 300 × 190 × 150 mm, about 4.5 kg. Linn introduced it in the UK in 1979 at £130 per pair as the company's entry-level loudspeaker. It is a sealed two-way built around the same KEF-sourced B110 bass-mid and 19 mm T27 dome tweeter that the BBC LS3/5a used. The drivers are the familiar ones. The crossover is not. Linn fitted a far simpler passive network, nominally crossing around 3.5 kHz, and the internal volume is only about 4.5 litres. Everything about the design assumes one installation: hard against a wall, at ear height.

Get that placement right and the little sealed box goes startlingly deep for its size. Get it wrong, with stands, free space, or a metre out into the room, and it turns thin and bright. The owner will spend years convinced the speaker is at fault. It isn't. The Kan was designed around boundary reinforcement, and the factory was blunt about it.

Linn apparently never published a formal spec sheet. There is no authoritative factory frequency response or sensitivity figure for the Kan. Independent measurements put sensitivity at roughly 83-86 dB/W/m, and in-room response anywhere from 65 Hz to 20 kHz depending on how the wall is loading the cabinet. Nominal impedance is 8 ohms. Linn's own guidance called for at least 20W with good current delivery, and the Kan earned a reputation for being current-hungry out of all proportion to its size.

Production ran from 1979 into the early 1990s. The archive's own footer dating puts the end at approximately 1994, though the body text of the record only says the name "endured into the early 1990s." Treat the end date as approximate.

Key Features

Sealed 4.5-Litre Enclosure

A sealed box of roughly 4.5 litres internal volume is an unusual choice for a small speaker of this era, and it is the reason the Kan behaves the way it does. Sealed loading gives a gentler rolloff than a port. Combined with wall placement, it produces bass that surprises people who have only seen the cabinet dimensions. It also makes the speaker less forgiving. There is no port to tune around a bad room position, and the amplifier has to control the woofer without the acoustic assistance a reflex design provides.

KEF B110 Bass-Mid and T27 Dome Tweeter

The drive units are the same KEF-produced B110 bass-mid and 19 mm T27 dome tweeter found in the BBC LS3/5a. The 110 mm B110 handles everything below the crossover, and the T27 covers the top. Because the drivers are the same, the Kan's sound comes almost entirely from the crossover and the cabinet, and that is where Linn diverged from the BBC design.

Simplified ~3.5 kHz Crossover

Where the LS3/5a used a complex network, the Kan used a far simpler passive crossover crossing nominally around 3.5 kHz. Simplicity here is a design position, not a cost cut. There are fewer components in the signal path, but less correction for driver behaviour, which puts more of the tonal result in the hands of the cabinet and the room. It is also why the Kan's balance shifts so audibly with placement.

Wall-and-Ear-Height Installation

The design brief was explicit: mounted directly against a wall, at ear height, not parked on stands in free space. This is the single most important thing to know about owning a Kan. The speaker's bass extension and tonal balance were calculated for boundary loading, and the archive's independent response figures (65 Hz to 20 kHz, varying with boundary loading) reflect that. Owners who follow the brief get a genuine small monitor. Owners who don't get a bright, thin box and blame the tweeter.

Kan II: Four Terminals for Bi-Wiring

The Kan II variant appeared in the mid-1980s and added four terminals for bi-wiring. Beyond the added connection flexibility, no documented specification difference between the Kan and Kan II has surfaced in the record. The drivers, cabinet, and crossover topology are not recorded as changed.

Historical Context

The Kan was Linn's entry-level speaker in the late 1970s. In period dealer demonstrations it was frequently partnered with the LP12 turntable and Ittok tonearm, the classic Linn front end driving the smallest Linn speaker. That made a complete Linn system that could be sold as a system, with the source-first philosophy applied all the way down the range.

Contemporary reception was mixed. Audio (October 1981, p.23) reprinted a dealer newsletter that put the Kans side-by-side with floor-standing monitors and found they paled in the overall comparison, yet held up well into the bass frequencies.

The name endured into the early 1990s, with the Kan II having appeared in the mid-1980s. Alongside it in the Linn range sat the Sara and the Isobarik, both considerably larger and more expensive designs.

Collectibility & Value

Second-hand Kans trade at roughly $150 - $500 per pair depending on condition, according to the archive's market notes. Recent eBay asking prices have run higher, with consecutive-serial pairs listed between $513 and $720. Asking prices are not sale prices, and clean original pairs with matching serial numbers command a premium over scruffy ones.

The failure points are well documented and predictable. The B110 surrounds deteriorate with age, the tweeter ferrofluid dries out, crossover capacitors drift, and the veneer chips. Original spare drivers are long discontinued, though donor units surface occasionally. A commercial full refurbishment and upgrade service for the Kan exists, offered with a six-year guarantee.

A Kan with fresh capacitors and cleaned tweeters remains a capable little monitor, provided it goes on a wall and not on stands. Buy on condition, check the surrounds and tweeters before parting with money, and budget for a recap if the pair has never been touched.