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Revised Dec 97
LOUDSPEAKER HISTORY
ISOBARIK HISTORY
Introduced 1973
Discontinued 1992
Upgrade
Date
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)
Index
Dec. 1991
Serial No.
8293/4
Crossover:
New 4 ohm external fitted in stand.
Facility 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 active.
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
Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved.
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