I've had a pair of LX5 for about 28 or 29 years, and I've probably listened to it for more years since then than other much more expensive speakers I've owned. I first modified them about 12 years ago and changed the stock components for a better polypropylene cap and an air cored inductor instead of the cheapo ferrite core inductor and I used Chord Carnival wire. I also added some foam to the interior as the stock cabinet only has a single small piece of damping material in it. The inductor is 1.0 mH, and the cap is 6.2 mF.
Then more recently the foam surround disintegrated and I refoamed them.
This weekend I modified my original modifications. I used Duelund cables for interconnects and speaker cables, and so I thought I'd use Duelund DCA20GA. That is quite thin but the LX5s are tiny, and I'm using a Miniwatt 3.5 watt per channel single ended EL84 amp and so I thought high definition was more important than current carrying. I upgraded the SCR cap I used to a ClarityCap SA which is quite a bit bigger. I kept the air cored inductor. Then the other change I made was to roll up some bubble wrap and put it in the top half of the speaker - that is suppose to inciease the effective volume of the enclose. I kept the drinking straws in the ports.
I've been listening today and I really think the sound has taken a jump forward. Bass is tighter, and there is more detail. I expect both the Duelund cable in the ClarityCap to need about 50 hours to burn in, and so I'm hoping the sound will improve still further in the next week or two.
I was hoping to add some pictures to this post but there doesn't seem to be any option to select local pictures anymore.
I added 0.1 mF Audyn True Copper caps as bypass caps to the 6.2 mF ClarityCap SAs. Here is the crossover showing the two caps, the air cored inductor at the bottom and the Duelund cabling:
When I first added the Audyns, the sound changed to a more mellow rich tone. If the caps were valves, I would describe the ClarityCaps alone as as 'Sovtek EL84', whereas with the Audyns they went in a richer 'Psvane EL84' direction. The Audyns have now had about 100 hours, and the ClarityCaps maybe 200 hours. For a desktop system it is sounding great, the detail is allow there throughout the range, and even the bass is better than it used to be problem because of the cabling and bubblewrap I added. But in this system, the quality of the sound of the Linaeum tweeter seems mostly limited by what caps are in the crossover.
Here is a picture of my desktop system in the back room of my flat:
I run it in the day playing jazz, and I can go in the back room and listen when I need a break from work. The MiniWatt N3 is the valve amp on the left in the picture, I use an original Hugo as a DAC which is pretty detailed and I can hear all of it with the modified Genexxas.