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Siegfried Linkwitz LX-mini Speakers

Discussion in 'd.i.y.' started by davidjt, Oct 24, 2019.

  1. davidjt

    davidjt pfm Member

    Now there's a whole different can of worms.......one I don't think I want to get into. :D

    The speakers have arrived and I've dry fitted everything successfully - buying a properly cnc'd kit hardly qualifies as diy, since everything practically falls into place. One or two refinements have been added since the original design, giving a more professional finish. The four ruddy great circlips are the only eyesores left and some metal primer plus a couple of topcoats should fix them. Allowing for plenty of paint drying time they'll be together by the weekend, by which time the crossover parts should be on the horizon. (We've just had another power cut - 36hrs this time, so maybe that's this month's quota all in one go? Sod's law suggests otherwise. :()
     
  2. davidjt

    davidjt pfm Member

    Just the one power cut later, the crossover has gone together and tested ok and the speakers are built (if that's the word). I'm still not sure about the red/black colour scheme so have left enough wire to be able to dismantle and re-paint if necessary. Annoyingly, the case for the crossover has gone to the U.K. by mistake and I'm missing a pair of phono sockets. Listening will require the latter at least, so has to be postponed for a few days. I could post photos on flickr but there are already plenty on the net so more would probably be superfluous.
    (Of the circlips mentioned above only one of each pair serves any purpose in this application, so two have been discarded.)
     
    darrenyeats likes this.
  3. davidjt

    davidjt pfm Member

    So far, listening has been very impressive. I'll be happier when the crossover is cased and properly hooked up with co-ax, but at least it works. From past experience it'll take a couple of weeks for DIY euphoria to start to wear off - I'll update then if anyone's interested.
    Immediate impression: it's like having a much more expensive DAC as a source. More articulate.

    A couple of thoughts on construction: the kit from Germany includes (3-D printed?) brackets for the smaller drivers. They are very brittle - (the fact that you need 2 and receive 5 or 6 may be a clue...). I filed down the lugs until they were snug and required less brute force. Those smaller drivers require 4 of the smallest available push-on crimp terminals, which aren't included. You will also need 2 x 4-pole Speakon plugs.
    On DIYaudio there are experienced constructors who strongly recommend additional flux when soldering, so I've used it at home. Removing the excess afterwards is a pita, and I didn't happen to have any here anyway. I didn't miss it. It's possible the high quality of their pcbs helps.
     
    Last edited: Nov 15, 2019
    mega lord likes this.
  4. davidjt

    davidjt pfm Member

    https://www.flickr.com/photos/45600917@N04/

    Caveats: 'Proper' comparison with my existing set-up is impossible: swapping cables around (external crossover vs. internal, two lots of stereo amplification vs. one) and the inability to level match (ditto) preclude it. No-one else will be running a Meridian G57 alongside 2 x ACAs.

    My entirely subjective conclusions thus far:

    They do >90% of what I like about my ESL57s/Townshend Supertweeters/REL Strata II without either extra tweeters or subs. (Bass is excellent given their size: a sub or two will obviously give you more.)
    They do all that while taking up less than 10% of the space. They are remarkable.

    I could happily live with them in place of the Quads, but for logistical reasons will keep the latter here and take the LXs back to the UK. The living room there is acoustically very poor both in shape and construction and I'm sure the LXs will improve matters. All the theory (and much subsequent discussion) is available elsewhere. They were designed with a domestic environment in mind.

    So if you can live with their looks, maybe have limited space and have doubts about boxes, they make a very rewarding project.
     
    orangeart and darrenyeats like this.
  5. a.palfreyman

    a.palfreyman pfm Member

    They have a bit of an 'architectural / street furniture' look to them and I quite like the bold red colour. Glad they work well. Be interesting to see what difference a different environment makes to the sound as I would imagine few people would have the opportunity to try in vastly different rooms, not-withstanding the foibles of audio memory etc. ;)
    AP
     

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