Lsim tweeter swap
joecoulson
Posts: 1,808
in Speakers
Anyone interested in a very rudimentary tutorial on replacing a tweeter in the Lsim series?
2ch: PS Audio Stellar Gain pre, 4 x Linn LK240 monoblocks ( bi-amping) Elac Adante AF-61's, SVS SB16 Ultra Subwoofer, Cambridge Audio CXN v2, Rega Planar 2 with Canaro 2 subplatter, dual belt pulley and upgraded bearing, Rega Ania MC cart, Vincent PHO 701 Phono pre with Mullard NOS 12au7, Audioquest Niagara 1000, AQ Thunder, AQ red river XLR's and Victoria IC's, Wireworld Stratus and Aurora power cables, Atlas EOS power cable, Denon 2910 (as transport) Sony CPD355 Jukebox cd
5.1: Marantz sr5003 (feeding mains through HT bypass) Sonus Faber solo center, AQ Carbon HDMI's, Sony XBRx900E, Xbox One S as 4k player, Definitive Technology SM350's surrounds, Tivo Bolt, Harmony Elite remote
Other gear: Totem Rainmakers (not hooked up) Sonos play 5 and play 1's x 2, Audio Technica TT and Edifier active speakers in kids room, JVC XM448 minidisc rack mount, Sony minidisc walkman, Project Debut III (currently not working), Samsung 46, and 2 x32" tvs, Samsung Soundbar, Okki Nokki LP cleaner, Second Harmony remote setup for bedroom, etc etc
5.1: Marantz sr5003 (feeding mains through HT bypass) Sonus Faber solo center, AQ Carbon HDMI's, Sony XBRx900E, Xbox One S as 4k player, Definitive Technology SM350's surrounds, Tivo Bolt, Harmony Elite remote
Other gear: Totem Rainmakers (not hooked up) Sonos play 5 and play 1's x 2, Audio Technica TT and Edifier active speakers in kids room, JVC XM448 minidisc rack mount, Sony minidisc walkman, Project Debut III (currently not working), Samsung 46, and 2 x32" tvs, Samsung Soundbar, Okki Nokki LP cleaner, Second Harmony remote setup for bedroom, etc etc
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On a track of vocal choir about three weeks ago I heard some breakup on one of the Lsim705’s. I could only hear it with a certain frequencies and it was easier to hear at a lower level. Normal listening provided no clue to this issue but I’m not one to have less than status quo. I ordered a Tweeter from Polk and it took quite some time to get here. I still have the 705’s as a friend of mine purchased them and is having me hold them after my acquisition of the Elacs. I follow through with stuff like that as I would not want anyone to get these from me without 100% working. I purchased them used and the mid driver was blown when I got it so I know how that feels.
Anyway, got the new tweeter and laid the speaker down on its back to work.
First thing is the beauty plate (no idea what it’s called but it’s that rubber gasket covering the screws ). It’s applied to the area with double sided adhesive. If you are careful and pull very carefully from the edge of the mid driver, you can get some wiggle room and start to pull it away from the face
Next you undo the 6 Phillips head screws on the outer portion of the mounting plate. This then decouples the mid/tweet housing and there is enough slack on the wires to pull it out and work on it.
Next decouple the wires attached to the tweeter (they are sized for easy RE-attaching) and loosen the three screws from the backside of the tweeter.
The do everything in backwards order to get it back to 100
5.1: Marantz sr5003 (feeding mains through HT bypass) Sonus Faber solo center, AQ Carbon HDMI's, Sony XBRx900E, Xbox One S as 4k player, Definitive Technology SM350's surrounds, Tivo Bolt, Harmony Elite remote
Other gear: Totem Rainmakers (not hooked up) Sonos play 5 and play 1's x 2, Audio Technica TT and Edifier active speakers in kids room, JVC XM448 minidisc rack mount, Sony minidisc walkman, Project Debut III (currently not working), Samsung 46, and 2 x32" tvs, Samsung Soundbar, Okki Nokki LP cleaner, Second Harmony remote setup for bedroom, etc etc
5.1: Marantz sr5003 (feeding mains through HT bypass) Sonus Faber solo center, AQ Carbon HDMI's, Sony XBRx900E, Xbox One S as 4k player, Definitive Technology SM350's surrounds, Tivo Bolt, Harmony Elite remote
Other gear: Totem Rainmakers (not hooked up) Sonos play 5 and play 1's x 2, Audio Technica TT and Edifier active speakers in kids room, JVC XM448 minidisc rack mount, Sony minidisc walkman, Project Debut III (currently not working), Samsung 46, and 2 x32" tvs, Samsung Soundbar, Okki Nokki LP cleaner, Second Harmony remote setup for bedroom, etc etc
Looks like some acoustic treatment would benefit well if it is possible?
Hope it all works out well.
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