FREE PROJECT: Martin-Logan Sequel II pair (local pickup only)

Yours for the Asking
Purging has begun. I bought these in 2014 as a project. One panel was dead, the woofer on the other speaker was dead.

I found a replacement woofer, so that's a done deal. Never installed it though.

The panel is another story. In aging M-Ls, the adhesive holding the panels up can break down, causing the panels to slide down in the wooden frame and break the wire loose from the stator panels. That happened. Yet due to age, the panels weaken. I had planned on opening both panels and applying some new conductive fluid but tore the Mylar film when I went to separate the first one.

There are instructions online to rebuild the panels, and many have done so successfully. (Check the Martin Logan Owners forum.) I did once buy a kit but, with it being several years old, the fluid is probably no good, and the adhesive tape also got aged. So, new materials would be needed. I did buy a roll of Mylar, however, and that of course remains intact. I bought a couple of laminated scrap shelves from IKEA that can be used as ends for the jig to apply the new mylar to the panels--those will be included also.

It is also possible that M-L may sell replacement panels. Honestly that's easier, but I can't see putting several hundred dollars into an older pair of these speakers, as their newer models perform better.

To the best of my knowledge, the electronics work properly. But the last time I tried one of these was ten years ago. The cabinets are in fair condition--they have a rough black finish that could use a deep cleaning or some sort of refinishing, but they aren't banged up in any way. The wooden side rails look OK but those could be refinished if someone prefers to change the color.

So, that's it. A free pair of cabinets, panels, the extra woofer, a roll of mylar, assorted parts and what's left of the rebuild kit I bought (not much).

They're sort of wedged into the laundry room of the basement Tetris-style, so a photo isn't possible at the moment.

Obviously...pick up only. So, someone local, or someone willing to drive (or meet part way) is how these will go. Also, please be an active member here at the Haven for a while.

These are $Free. Zero dollars. Sin dinero. Pas d'argent. нема новца. Even in Canadian "funny money," they're still $0,000.00. Just the cost of gas to get these out of my life. If nobody claims these, the next owner will be Green For Life on trash night...


Stock M-L photo:

1707924991896.webp

 
Detroit-ish. If you're Chicago-ish, it's only a few hours to meet halfway. (I'm 4-5 hours depending on what part of Chicagoland I look at.)
 
I'm probably going to have to cover AXPONA (Schaumburg) this year...I can bring the "road trip" vehicle and load up if need be. If you're near Madison or thereabouts, it's not a biggie to meet halfway or figure out something that will work.
 
I had a pair for a while, but not in a proper room. Also had a pair of Aruis Ii that I liked a lot.
 
I'm probably going to have to cover AXPONA (Schaumburg) this year...I can bring the "road trip" vehicle and load up if need be. If you're near Madison or thereabouts, it's not a biggie to meet halfway or figure out something that will work.

Yeah I live south of Madison, I may actually be down near Joliet for a project with work at that point.

I'll be your huckleberry on these things if you want to haul them. I am also perfectly fine with being 2nd in line if you find a local person that is easier for you to deal with.
 
I'll be your huckleberry on these things if you want to haul them. I am also perfectly fine with being 2nd in line if you find a local person that is easier for you to deal with.
They are not all that popular, so they will likely sit until I can move them along.

Maybe with @Rickyd's offer, there's plenty of parts to Frankenstein a good set together. I have one good panel that probably just needs the wire soldered to it (if it has come loose)--that panel hasn't been opened. Only thing is, the panels will be weak due to the deteriorating coating on them (age, ultraviolet, dust, etc.) so if you decided to get into the panels at a later time, at least I would have the spare Mylar thrown in. And until then, you could at least get them working. The woofers are known to be a bit finicky, so having spares is helpful.

Madison-ish isn't too bad, really--I drove clear out to Connecticut to pick these up! 😁 Actually, I bought them, had a friend store them for a few months in a storage unit, and we ended up going on a trip to Maine and I picked them up on the way back home.
 
Nice offer! A decade ago I would be in your driveway pronto, but I’m purging myself and still have a set of Magneplanars out in the garage that may need similar surgery.

If no one here is able to get them, you can probably put them up on CL or FB locally for small money or free and have your email explode as there are tons of locals who would be all over those.
 
Nice offer! A decade ago I would be in your driveway pronto, but I’m purging myself and still have a set of Magneplanars out in the garage that may need similar surgery.

If no one here is able to get them, you can probably put them up on CL or FB locally for small money or free and have your email explode as there are tons of locals who would be all over those.

Not to sound like a masochist, but rebuilding the panels seems interesting. If these were something ordinary I doubt I'd be so interested.

And to reiterate - If someone local wants them cut em loose. My only concern with meeting up is the possibility that we won't be able to arrange the connection for some reason and you will be holding them for no reason. Driving to Schaumburg to see you if the timing worked out is not an issue though. Maybe I should just attend Axpona for that matter...
 
My only concern with meeting up is the possibility that we won't be able to arrange the connection for some reason and you will be holding them for no reason. Driving to Schaumburg to see you if the timing worked out is not an issue though. Maybe I should just attend Axpona for that matter...
The show is 4/12 to 4/14 and unless something comes up, I'm planning on attending. But if I head to or through Chicago before/after, I'll give a heads-up.

Not to sound like a masochist, but rebuilding the panels seems interesting. If these were something ordinary I doubt I'd be so interested.
From what I've seen, all that needs to be done is to build a wooden jig to stretch the Mylar across (only on the shorter ends, due to being curved), then lay it onto the adhesive insulator strips on the lower stator. The conductive coating is applied to the surface of the mylar (I believe it's only on the top/front side), staying away from the insulators. Copper strips are used to contact the conductive coating. Then the upper stator (with the same insulator strips) is laid on top of that. A little tedious but not impossible.

The hardest part might be soldering wires to the stators. Gayle Sanders told me that at ML, they had to heat them up hot and really fast, so a large soldering gun is needed. (With smaller guns, the heat dissipates into the frame rather than heating up enough to melt solder.) I tried a Weller gun I had here but it might not be hot enough. I wonder if one of those small torches might work.

There are a few tutorials out there with all the correct details. If I had more time, and the room to work on them, I would have done them already.
 
How many watts is the gun? The thermal mass of the larger copper tips retains more heat than pencil types, and a higher watt gun should refresh faster. I had a two level 260/200W gun that might do the trick depending on how big the receiving terminals are.
 
There are no terminals--the wire is soldered directly to the heavy sheet metal of the stator due to the slim profile of the way the panels are mounted.

I think mine was 200+ watts. But I haven't used it in several years.
 
There are no terminals--the wire is soldered directly to the heavy sheet metal of the stator due to the slim profile of the way the panels are mounted.

I think mine was 200+ watts. But I haven't used it in several years.
That sounds like a dubious design as that heavy sheet metal is acting as a huge heat sink dispersing the heat before the solder point gets to soldering temp. Maybe it would make more sense once I saw it.
 
That sounds like a dubious design as that heavy sheet metal is acting as a huge heat sink dispersing the heat before the solder point gets to soldering temp. Maybe it would make more sense once I saw it.
Gayle seemed to think my soldering gun might work on it, but he also did say it had to be done very quickly while the heat was still concentrated in a small area. In production, it was a simple task since they were set up for it that way. Today, they probably "weld" the wire in place, or use equipment very similar to it. I've seen welders used for assembling EV battery packs, as they can apply a high amount of heat in very short bursts, so as not to damage surrounding electronics or batteries.

The interactions I had at AXPONA were...interesting. Probably back in 2016 or 2017, I was telling an ML rep I was going to be working on the project, and pretty much got berated that I don't have the knowledge, or the right tools, materials, processes, etc., for it to work. Despite my telling him that many others have done this successfully. That was the same room I walked out of a year later since they had turned up the pair to painfully loud levels (with some nasty sounding McIntosh electronics) and not only that, year after year they played the same narrow playlist and not taking requests. Says a lot for the current marketing attitude of ML.

Yet I talked to Gayle Sanders, who founded the company in the first place (but had sold it due to retirement), and he was enthusiastic about my wanting to refurbish a pair. He and Ron Sutherland had some interesting experiences with their early experimentation developing the curved panels (including the first experiment which sounded lovely until it went up in smoke 😁), so he appreciates the DIY side of things.
 
This sounds exactly like the kind of project I would like: a lot of labor, research and success not guaranteed. And I do need a project.

I’m also in the Chicago area but go to St. Joseph MI regularly to see my mom.

I need to check if I can even fit 2 6’ tall speakers in my car…

Edit: 5' is the limit with seat folded down in the Saab so I will need to pass...
 
Last edited:
This sounds exactly like the kind of project I would like: a lot of labor, research and success not guaranteed. And I do need a project.

I’m also in the Chicago area but go to St. Joseph MI regularly to see my mom.

I need to check if I can even fit 2 6’ tall speakers in my car…
Have you had Martin Logan's before? If no you definitely need these.
 
Back
Top