Linn Keltik Manual

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Side 1/2

Paul O'Neill

Product Information Sheet

January 1996

THE LINN KELTIK AKTIV LOUDSPEAKER SYSTEM

The Linn Keltik Aktiv Loudspeaker system is the culmination of many years of experience in driver construction,

cabinet fabrication, and active electronic crossover design.

The Keltik is an active system; each drive unit is powered by a separate amplifier. Rather than using a conventional

internal passive crossover, the Keltik system employs an active electronic crossover located before the power

amplifiers. The Linn Keltik Aktiv Electronic Crossover divides the musical signal into three frequency bands and

corrects phase, amplitude and time alignment to match precisely the characteristics of each individual drive unit

and feeds each frequency band to the appropriate amplifier.

The Keltik may be powered with a minimum of three power amplifiers, one for each frequency band. Additional

performance advantages may be achieved by employing a fourth amplifier to allow each of the Isobarik bass

drivers to be driven independently. For most accurate reproduction we recommend the use of Linn power

amplifiers from LK100 upwards.

The Keltik employs four Linn-designed drive units. The ferro-fluid ceramic tweeter provides exceptionally low

distortion performance even at high signal levels and incorporates an integral airtight enclosure.

The midrange unit features a carbon-loaded cone and strong die cast chassis. This driver is mounted in its own

irregularly shaped (no parallel sides) Ku-Stone loaded

compartment that isolates it from the pressure changes generated by the bass units.

The two bass drivers are used in Linn's patented Isobarik* configuration and employ die cast chassis, stiff

carbon-loaded cones, large diameter aluminum voice coils and magnets that are nearly twice the size of those

employed in Linn's original Isobarik loudspeaker.

The front baffle is machined from Topan and the front surface is sculptured to reduce diffraction effects. The

enclosure is extensively reinforced and veneered inside and out for added strength and stability.

The combination of active electronics, Isobarik bass loading, and Linn's devotion to preserving the integrity of

the musical signal sets the Keltik Aktiv Loudspeaker System apart from the competition and provides a level of

performance never before possible.

Paul O'Neill

Technical Information

Keltik Loudspeaker Technical Information

Type Three-Way Active, Isobarik Loading

Ceramic coated tweeter, accurate midrange driver & Isobarik bass system*

Frequency Response 20Hz-20kHz -/+ 1db

Weight & Dimensions

Width 320mm

Depth 370mm

Height 1037mm

Weight: 52Kg each

Input Impedance 8 ohms nominal per drive unit

* In 1974, Linn patented the Isobarik bass system, which was first used in the Linn Isobarik loudspeaker. This

method of loading employs a second bass driver located inside the cabinet. A small sealed enclosure couples this

hidden drive unit to the bass driver mounted on the front baffle. Because these drivers work in phase with each

other, the air pressure in the small enclosure between the drivers remains nearly constant (hence the name

Isobarik). The primary bass driver, seeing less change in back pressure, behaves as if it were in a significantly

larger box. The technique of Isobarik loading gives an extended and tightly controlled bass response.

Keltik Aktiv Crossover Technical Information

Type Three way active crossover driving three or four stereo power amplifiers

(one or two amplifiers can be used to drive bass)

Electronic low frequency response extension

Weight & Dimensions

Width 320mm

Depth 326mm

Height 80mm

Weight 4KG

Electronic

Input Impedance 5Kohm

Output impedance 60ohms

Acoustic

On axis frequency response +/- 1dB 20Hz – 20KHz

Recommended Amplifier Power 70W per channel minimum

300W per channel maximum

Adjustments

Treble adjustment 0 to +6dB at 0.5dB steps

Bass Adjustment -6 to +6dB at 1dB steps

Factory setting – Treble -3dB

Factory setting – Bass 0dB

Produkt Specifikationer

Mærke:	Linn
Kategori:	Ikke kategoriseret
Model:	Keltik

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