Linn KELTIK, Руководство пользователя

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Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 39
Revised Dec 97
Index
UPGRADE TO INDEX II, HELIX II, NEXUS AND
KABER LOUDSPEAKERS
The treble response of the following loudspeakers has been improved by
changing resistor values on the treble crossover sections.
Serial No. of Change
Index II 9339/40
Helix 13395/6
Nexus 24833/4
Kaber/1 6245/6
On the Nexus crossover the change is from 2.2 ohms to 2.7 ohm.
The Helix has an additional resistor of 0.47 ohms. The Index II value
changes from 2.2 ohms to 2.7 ohms and on the Kaber/1 from 2.7
ohms to 3.3 ohms.
These adjustments improve the balance which yields better results
with a wider range of amplifiers and sources and gives better results
in 'live' rooms.
To Upgrade Index II Treble Response
Applies to speakers prior to serial number 9339/40.
Requires a simple resistor change in the crossover, from 2R2 to 2R7.
Tools Required:
No. 2 pozidrive screwdriver
Collar bi-wiring tool
1 pair side cutters
5 - 10 mm flat bladed screwdriver
Soldering iron, temperature controlled 25 - 100 W
Solder
Components Required:
2 x 2R7 ohm wire wound resistors Part No. RES 120
Instructions:
1. Remove collars from speaker sockets.
2. Remove speaker facia.
3. Remove screws securing bass unit.
4. Remove bass unit, un-solder wires and place to one side.
NB: red wire to positive terminal.
5. Remove crossover securing screw.
6. Lift crossover out of speaker.
7. Snip legs of resistor R1 close to board (see drawing).
Estimated Time
required:
30 minutes
TREBLE UPGRADE TO LOUDSPEAKERS