Polk Monitor/SDA magnet shift question

[jeffs 3,456]

Years ago I bought a pair of Polk SDA2 for my brother.  Didn't know anything about them. Loaded them on their sides into my SUV. Drove an hour home. Tried them out. A few days later - loaded them back up and drove 1.5 hours to his house. Nice speakers.

 

Today I'm going to pick up a pair of Monitor 10.  I was bored yesterday and started reading up on them.  Came across a magnet shift issue that may occur under various conditions .... a solid hit, or transporting them on their sides.

 

Now I'm kind of paranoid about getting them home (1.25 hours).  I know there are a few Polk experts out there.  I will be able to transport them on their backs, which seems to be preferred. Would this be sufficient, or should I remove the drivers for transport?

 

I do plan on glueing the magnets once I get them home.   Thanks.

Edited January 8 by jeffs

[4krow 7,168]

 I remember many years ago when moving a set of large JBL 4343 speakers, that I first put down a mattress, and then laid the speakers on their backs. Gluing the magnets won't do much good if you can't center the magnets first. I would think that a solid adhesive like JB Weld is the way to go when you get to it.

[BobTFM35 3,002]

Good to know about the magnet shift issue for these speakers.

 

This looks like a fun project.

 

Per Jeff's comments below, methods on the Polk forums look to be more correct, so I removed the video so as Not to be misleading.

Edited January 8 by BobTFM35

[jeffs 3,456]

45 minutes ago, 4krow said:

Gluing the magnets won't do much good if you can't center the magnets first. I would think that a solid adhesive like JB Weld is the way to go when you get to it.

Correct - if they are still OK when I pick them up, my goal is to NOT disrupt them until I get a chance to glue them.  JB Weld seems to be one option ....

[jeffs 3,456]

deleted content here to make the topic flow correctly

Edited January 9 by jeffs
my comments here were no longer relevant to the flow

[Sk1Bum 12,443]

I moved a pair of these for about 3 hours from St Louis to Springfield with no issues. One was standing in the passenger side floorboard, and the other was standing in the passenger seat.

[jeffs 3,456]

Bottom line .... I pushed the PRs and made sure the mids did their dance, threw them in the trunk and drove home.  No issues. Will revisit the glue if/when I take them apart for wood veneering.  FWIW these are Monitor 11A, which is more-or-less the same as the Monitor 10.  Bigger box, different mid,  maybe slightly different xover?

These lived their last 10 years on the ocean .... I mean you could walk across the street straight into the Mystic CT Harbor. The MDF has absorbed a lot of moisture due to constant humidity.

The drivers are in excellent shape.  If I decide to keep these, I'm going to get a set of the RD-0194-1 replacements as I did for my brothers SDA2.  I hope these can still be had directly from Polk? The existing SL2000 tweeters can be harsh and tiring.  Maybe rebuild the crossovers with some quality caps as well.

For grins I put one on a stand that I've had forever but never used.  I think these stands hold 120 lbs.  Dying to use them for something, but this won't be it.

 

Anyway - well worth the $100.