|
modification
|
date
|
serial number
|
|
speaker: Major upgrade: Addition of KU-STONE ceramic absorber,
units and back now sealed with gaskets instead of silicone, improved
cabinet bracing (Upgrade not retrofittable).
|
Dec. 1991
|
8293/4
|
|
crossover: New 4 ohm external fitted in stand. Facilities for
tri-wiring. DMS no longer made as PMS can be used with either passive (4
ohm) or aktiv crossover.
|
1988
|
6701/2
|
|
treble unit: Cosmetic improvement: Fitted with countersunk
screws.
|
Sept.1987
|
6201/2
|
|
cabinet: Crossover now in bottom of speaker accessible
from underneath. Facility for converting easily to tri-wiring or
to aktiv.
|
1987
|
5575/6
|
|
midrange units: Improved rubber surround to harder rubber.
|
Apr.1986
|
4953/4
|
|
cabinet: Construction improved (internal sealing and damping).
|
Dec. 1985
|
4825/6
|
|
crossover/treble units: Improved PCB with wider tracks and better
layout. Treble units also changed to give a smoother response. Linn logo
incorporated on front plate.
|
May 1984
|
3939/40
|
|
bass/midrange Units: Sound-deadening material painted on bass and
midrange units.
|
Mar.1983
|
3000/1
|
|
cabinet: Changed from chipboard to MDF and veneered on both
sides.
|
Jan. 1982
|
2859/60
|
|
treble unit: Fitted with t-nuts.
|
Oct. 1981
|
2741/2
|
|
wiring: Changed internally to common earth at cannon socket.
|
Mar. 1980
|
11,035/6
|
|
treble unit: Scanspeak treble unit replaced with Hiquphon unit,
recognised by two concentric rings on unit.
|
Feb. 1980
|
10,925/6
|
|
midrange unit: Vented.
|
Nov. 1979
|
10,800/1
|
|
damping: Midrange enclosure and cabinet damping changed.
|
Sep. 1978
|
10283/4
|
|
speaker: Active PMS version introduced.
|
1977
|
|
|
cabinet: Current cabinet style adopted.
|
Sep. 1976
|
|