Linn LOUDSPEAKERS Manual

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Owner's manual (8 pages)

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Page 1 LINN LOUDSPEAKERS...
Page 2: Table Of Contents
Treble upgrade to: Index II Nexus II Helix II Nexus IV Kaber/1 Convert Isobarik Passive to external crossover Loudspeaker History Louspeaker Specifications Bi-wiring and Beyond Loudspeaker Accessories Page 2 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 3 Revised Dec 97 LINN LOUDSPEAKERS Loudspeakers are the final link in the hi fi chain. The challenge of making loudspeakers perform properly is similar in many respects to getting the best from turntables. When a speaker converts signals into sound waves it involves movements similar in scale to a stylus in a record groove in addition, of course, to much larger movements.
Page 4: General Set-Up Of Linn Loudspeakers
Most Linn speakers are designed to work close to, or against, a wall (5 - 10 cm), except for Helix and Nexus which are high efficiency models and can be placed well into the room if necessary.
Page 5: Damaged Units
1). However as the treble units in passive speakers are driven through a by- pass filter they will not be damaged unless the voltage is sufficient to burn out the crossover, after which all the units may be destroyed. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 5...
Page 6: Faulty Units
Again, this can be checked with a Multi-meter set on ohms: Typical reading is around six Ohms. If the unit measures correctly gently move the dome with your finger while measuring the speaker. Page 6 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 7 If you are in any doubt about a faulty speaker unit and do not wish to open the unit yourself, they can be returned to Linn Service for checking. Follow the normal returns procedure as descibed in the returns proce- dure.
Page 8: Fault Finding
Revised Dec 97 FAULT FINDING LOUDSPEAKERS FAULT FINDING Loudspeakers are generally very reliable with very few problems. Most problems are caused by overdriving eg. playing of keyboards through speakers, faulty amplifiers (DC at output) and physical damage to units. Symptom...
Page 9: Changing Speaker Units
Replace insert. See page 30 for proce- problems in miss-threaded dure. Keildh speaker and stuck. Insert pushed Fit new insert. See page 30 for procedure. into the speaker Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 9...
Page 10: Silicone Sealed Treble Units
This does not always work but be warned: this can hurt! Gasket Sealed Units: The LS range of Linn loudspeakers, Index II, Helix II, Nexus and Kaber were fitted with rubber gaskets, current models use foam gaskets. These facilitate the removal and replacement of units and should not present any problems.Use new gaskets if originals are torn etc.
Page 11 Where treble unit is enclosed type, seal wire holes with hot melt glue. Silicone sealer may be used instead, the object is to make the treble unit airtight. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 11...
Page 12 Re-fit Grilles: Kan only - glue new Grille in position using silicone or hot melt glue. Audition speaker. Polish and clean for customer. Page 12 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 13 Read the following instructions before attempting any removal/replacement. 2. Gasket Sealed Units: The LS range of Linn loudspeakers are fitted with foam gaskets. (Some early ones used rubber) These facilitate the removal and replacement of units and should not present any problems.
Page 14 Do not over-tighten as this can damage the front plate. Clean off silicone sealer. When wet, scrape off excess with a flat bladed screwdriver and clean with a cloth. Audition speaker. Polish and clean for customer. Page 14 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 15 Place speaker on its back an seal the bolt heads of the unit screws with a drop of hot melt glue. Audition speaker. Polish and clean for customer. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 15...
Page 16 Do not over-tighten as this can damage the unit front plate. Audition speaker. Polish and clean for customer. Page 16 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 17: Changing Components In The Sekrits
Reconnect the electrical "push-on" connections, red to the red terminal (+). Refit the cabinet on wall (LS7000 only) using the 8 M4 screws. Refit the socket collars and the front Grille. Test Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 17...
Page 18 Reconnect leads - red wire to red terminals and reconnect electrical connec- tions. Refit the cabinet to the baffle using the 8 M4 screws. Refit the socket collars and the front Grille. Page 18 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 19: Sealing Speakers
It is therefore important that the cabinet is airtight. Over the years we have improved the seal in our loudspeakers, for example, by using better materials and coating the insides of the cabinet with special paints which both deaden and seal the cabinets, or by improving the laminations and laminating both sides of the cabinet walls.
Page 20: Simple Speaker Phasing Test
The treble units also move, but it is impossible to see. If phase is suspect, the speaker must be dismantled and wiring checked. If in doubt, contact the factory or your distributor. Page 20 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 21: New Speaker Grilles
To remove Grille. Pull one corner of the Grille material and the rubber ring will come out of the slot. Remove the ring first then the Grille. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 21...
Page 22: Full Length Speaker Grilles
To remove Grille. Pull one corner of the Grille material and the rubber ring will come out of the slot. Remove the ring first then the Grille. Page 22 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 23: How To Reduce The Treble By 1Db
Now carry out listening test and if satisfied with the result secure the trim ring back in place with silicone (where required, see 2). Caution: Use silicone sparingly and avoid getting it on to the surround of the unit. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 23...
Page 24: Kabers
Once satisfied that the wiring is correct, connect mid and bass speaker wires and then audition. Clean and re-pack speaker for customer Page 24 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 25: Keilidhs
Place carefully to one side. *NOTE: A short-cut is to leave the unit soldered but be careful that you hold the unit when moving the cabinet to prevent it hitting the cabinet and causing damage. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 25...
Page 26 TO CONVERT FROM PASSIVE TO AKTIV CUT THE 4 WIRE LINKS DISCONNECT UB+ PASS. AND ATTACH TO UB+ ACT. DISCONNECT T- PASS. AND CONNECT TO T- AKT. Page 26 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 27 1. Move the wires marked T- and UB+. 2. Cut these 4 links KEILIDH LS 300 PASSIVE: (Above sn 21,000) 1. Move the wires marked T- and UB+. 2. Cut these 4 links Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 27...
Page 28: Tukans
Now carry out listening test before secur- ing the trim ring back in place the way it was, using the lugs, or if early Tukans use double sided tape. Page 28 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 29: Sekrits
LS 7000 ON-WALL: Prise the crossover off the front baffle and solder the links on the back as shown. Refit the speaker baffle. Repeat with other speaker. INKS INKS Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 29...
Page 31 11. Replace the speaker wadding as you found it. Refit the speaker unit and trim ring. If Trim ring was fitted with silicone, use new silicone to secure in place - Avoid getting silicone on to the unit surround. 12. Audition. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 31...
Page 32: Speaker Stands
7. Reposition the loudspeakers and confirm that the speakers are in the best position by trial and error, taking care not to hurt yourself on the spikes, or allow the spikes to damage any cables.
Page 33: Modifying Helix / Nexus For Kustone Stand
Re-assemble speaker, soldering wires to unit and securing in position. Re-attach facia or trim ring (glue in place with silicone sealer). Carry out modification for the other loudspeaker. Fit stands and audition loudspeakers. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 33...
Page 35: Introduction
The full Linn upgrade path is possible, each stage providing a notable improvement in acoustic performance, from bi-wiring through bi- amping to full active. The SEKRIT loudspeakers have been built to last, and designed to be easily serviced, and they will give many years of listening pleasure.
Page 36 The baffle is the same for both IN and ON WALL speakers so the procedure for removing the speaker units and crossovers is the same once the baffle is removed from the ON-WALL cabinet LS 6000 IN WALL Page 36 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 37: Linn Brakit
The unique curved shape gives strength to the assembly and also offers flexibility of both vertical and horizontal adjustment. The loudspeakers can be angled to obtain the optimum listening axis. The speakers are held within 6cm of the wall and the mounting brackets are hidden behind the speakers.
Page 38 Decide on the location of the loudspeakers and mark the wall at the edges of the steel plate. Remove the wall plate from the loudspeaker assembly and use it to mark the position for the holes in the wall, having first checked for vertical with a spirit level.
Page 39: Treble Upgrade To
Estimated Time UPGRADE TO INDEX II, HELIX II, NEXUS AND required: 30 minutes 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...
Page 40 Glue resistor in place if possible using hot melt glue or clear impact glue. Re-assemble speaker. Audition speaker. Clean and re-pack speaker for customer. INDEX LS120 HELIX LS150 Page 40 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 41: Helix Ii
Glue resistor in place using hot melt glue or clear impact glue. Take care to ensure that the solder joint is away from other components. Re-fit crossover to back panel. Re-assemble speaker. Audition. Clean and re-pack speaker for customer. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 41...
Page 42: Nexus Iv
Bend legs over and solder in place. Glue resistor in place if possible using hot melt or clear impact glue. Re-assemble speaker. Audition. Clean and re-pack speaker for customer. Page 42 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 43 Glue resistor in place if possible using hot melt glue or clear im- pact glue. Re-assemble crossover to panel and panel to speaker. Audition. Clean and re-pack speaker for customer. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 43...
Page 44: Convert Isobarik Passive To External Crossover
6. Get an assistant to hold the untinned wires into the recess on the negative bass socket with a damp cloth while soldering them in place. 7. Apply enough heat to ensure a good Page 44 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 45 To refit the old internal crossovers carry out this procedure in reverse. Double check the wiring and test carefully at low volume until you have checked that the speaker is wired correctly. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 45...
Page 46: Loudspeaker History
(From SPKR 015/1 to SPKR 015/2) SEKRIT IN-WALL Introduced April 94 SEKRIT 0N-WALL Introduced Dec 94 * New treble unit easily identified by 'Bull-bars' instead of Mesh grill. 1994 Page 46 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 47 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 Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 47...
Page 48 Feb. 1980 10,925/6 Midrange Unit: Vented. Nov. 1979 10,800/1 Damping: Midrange enclosure and cabinet damping changed. Sep. 1978 10283/4 Current cabinet style adopted. Sep. 1976 Page 48 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 49 10,440/1 Baffle: Changed from welded plastic to one piece moulded carbon filled ABS with removable ring for front bass unit. Bass unit venting increased. Oct. 1979 10,280/81 Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 49...
Page 50: Loudspeaker History
Cabinet: Design change - baffle attached with screws and glue. Bass Unit: Improved sound quality - unit changed from SPKR 007/1 to SPKR 007/2. Sep. 1989 2,967/8 Page 50 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 51 Oct. 1988 11,611/2 Baffle:Colour changed from light gray to dark grey. Oct. 1988 11,216/2 Crossover:Added two capacitors. Damping added in speaker port. Sep. 1988 10,617/8 Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 51...
Page 52 Unit painted with sound deadening material. Cabinet: Material changed to medite. May 1982 19,153/4 Drive Units: Bass units painted with sound deadening paint - silicone sealant Mar. 1982 18,501/2 Page 52 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 53 For spare purposes, original Helix 1 treble unit (SPKR 005/1) has been upgraded to Nexus treble unit (SPKR 010/1) . This will improve performance and slightly increase power handling. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 53...
Page 54 Index Plus introduced incorporating cabinet material change: Drive unit positioning changed;crossover modification, improvement in treble response. Sept.1986 10,137/8 *Serial number re-started at 1,001/2 for the Index II Page 54 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 55: Aktiv/Passive
Height 900 mm Same as Aktiv Width 192 mm Depth 280 mm Weight 26 kg each speaker special Features Aktiv crossover setup Treble can be reduced by Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 55...
Page 56 Height 303 mm Same as Passive Width 188 mm Depth 183 mm Weight 5.6 kg each speaker Same as Passive Special Features Treble can be reduced by 1db. Page 56 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 57 (Aktiv to follow) Minimum amplifier requirements:1 x 60 W/4 Ohms Dimensions: Height 200mm Width 516 mm Depth 275 mm Special Features : Treble can be reduced by 1db. Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 57...
Page 58 12 kg each speaker Stand Height 500 mm (not including spikes) Early Sara and Isobarik (DMS & PMS) loudspeakers were fitted with a 3 pin XLR (Cannon) male socket. The wiring connections are: 1: No connection 2: Positive [+] connection...
Page 59 1 x B110 (modified) Cabinet loading Infinite baffle Dimensions: Height 303 mm Width 188 mm Depth 164 mm Weight 5 kg each speaker Stand height 565 mm Index Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Page 59...
Page 60 1 x 160 mm carbon loaded poly-propylene bass unit Cabinet Loading Infinite Baffle Dimensions: Height 436 mm Width 208 mm Depth 235 mm Weight 7.5 kg each speaker Stand Height 350 mm Page 60 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 62 In a similar manner, the low pass section of the crossover prevents the treble signal from travelling along the bass path. Page 62 Copyright © 1991-1997 by Linn Products Limited. All Rights Reserved. Index...
Page 63 The same techniques that are applied in bi-wiring can be used to tri-wire a loudspeaker with three drivers. The Linn Kaber is a prime example of this. Removing links on the rear of the speaker electrically isolates the three drivers. This allows three speaker cables to be run to each loudspeaker, providing a separate signal path for each drive unit.
Page 64: Loudspeaker Accessories
The Ku-stone stand improves loudspeaker stability and is acousti- cally very dead. It is unique to Linn and its performance will enable Linn retailers to give customers more pleasure from their music system.
Page 65 The unique curved shape allows gives strength to the assembly and offers flexibility of both vertical and horizontal adjustment. The loudspeakers are held within 6 cm of the wall and the mounting brackets are hidden behind the speakers.

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