MFSL inner sleeves

sombunya

Well-Known Member
Oct 18, 2012
133
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I've placed pretty much my entire collection in these, 2700 or so discs. When I pull a disc out to play it I see a sort of haze on it. It isn't smooth over the entire disc, it looks like a wrinkled sleeve "off-gassing" for lack of a better term.

It cleans right off when I use an Orbitrac and a mixture of 80% distilled water and 20 % isopropyl alcohol. I'm not liking this and wonder if anyone here has experienced this or has a comment on MSFL inner sleeves.
 

Addicted to hifi

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I've placed pretty much my entire collection in these, 2700 or so discs. When I pull a disc out to play it I see a sort of haze on it. It isn't smooth over the entire disc, it looks like a wrinkled sleeve "off-gassing" for lack of a better term.

It cleans right off when I use an Orbitrac and a mixture of 80% distilled water and 20 % isopropyl alcohol. I'm not liking this and wonder if anyone here has experienced this or has a comment on MSFL inner sleeves.
Is it on all lps or just some?
 

XV-1

Well-Known Member
May 24, 2010
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Unfortunately this has happened to mofi sleeves before. There are a few threads on Steve Hoffman forums.

Not sure if these are new mofi sleeves or older ones, but you need to get rid of them, clean your records into new sleeves.

IMO, mofi sleeves have always been overrated and flawed with these hazing issues. There are plenty of better and cheaper options.

Personal, I find el cheaper poly sleeves fine for albums with inner lyric sheets. I use covers33 polylined paper sleeves for any records that don't have lyric sheets - they have cut off corners for easy insertion and removal.

Good luck.
 

sombunya

Well-Known Member
Oct 18, 2012
133
8
325
Is it on all lps or just some?
I can’t say 100% that it is on all of them, but the sleeves that are about 5 years old, aim noticing it there.

At 40 cents per, that’s around $1000. Kind of sucks to waste them but I like my records more.
 

sombunya

Well-Known Member
Oct 18, 2012
133
8
325
One more thing; I like these inner sleeves because some LP’s use shiny card stock for inners and the static grabs hold and won’t let go. I suppose I’d settle for an acid-free paper if it didn’t have a hole in it. First world problems.
 

Addicted to hifi

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I can’t say 100% that it is on all of them, but the sleeves that are about 5 years old, aim noticing it there.

At 40 cents per, that’s around $1000. Kind of sucks to waste them but I like my records more.
Unfortunately this has happened to mofi sleeves before. There are a few threads on Steve Hoffman forums.

Not sure if these are new mofi sleeves or older ones, but you need to get rid of them, clean your records into new sleeves.

IMO, mofi sleeves have always been overrated and flawed with these hazing issues. There are plenty of better and cheaper options.

Personal, I find el cheaper poly sleeves fine for albums with inner lyric sheets. I use covers33 polylined paper sleeves for any records that don't have lyric sheets - they have cut off corners for easy insertion and removal.

Good luck.
I have just about all my lps in these inner sleeves and I would be very upset if they left marks on my lps.
 

Addicted to hifi

VIP/Donor
Sep 8, 2020
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I can’t say 100% that it is on all of them, but the sleeves that are about 5 years old, aim noticing it there.

At 40 cents per, that’s around $1000. Kind of sucks to waste them but I like my records more.
yes they are expensive and definitely shouldn’t leave marks on the lp.I am now worried, I might have the same problem as most of my lps have these inner sleeves.
 

Addicted to hifi

VIP/Donor
Sep 8, 2020
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I've placed pretty much my entire collection in these, 2700 or so discs. When I pull a disc out to play it I see a sort of haze on it. It isn't smooth over the entire disc, it looks like a wrinkled sleeve "off-gassing" for lack of a better term.

It cleans right off when I use an Orbitrac and a mixture of 80% distilled water and 20 % isopropyl alcohol. I'm not liking this and wonder if anyone here has experienced this or has a comment on MSFL inner sleeves.
Can you show a picture of this haze On the lp?
 

Addicted to hifi

VIP/Donor
Sep 8, 2020
4,610
2,039
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Australia
I can’t say 100% that it is on all of them, but the sleeves that are about 5 years old, aim noticing it there.

At 40 cents per, that’s around $1000. Kind of sucks to waste them but I like my records more.
How could a company like mobile fidelity sound lab do this.it’s bad news for there reputation.
 

tima

Industry Expert
Mar 3, 2014
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One more thing; I like these inner sleeves because some LP’s use shiny card stock for inners and the static grabs hold and won’t let go. I suppose I’d settle for an acid-free paper if it didn’t have a hole in it. First world problems.

Not sure which world you're in, but if you buy in US, I've had good luck with either of these:


 
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sombunya

Well-Known Member
Oct 18, 2012
133
8
325
Not sure which world you're in, but if you buy in US, I've had good luck with either of these:


I’m in So Cal. I’ll look into them. Thank you.
 

sombunya

Well-Known Member
Oct 18, 2012
133
8
325
As I said, I use a cheap, Allsop Orbitrac to give my records a quick wipe. I use an 80/20 distilled water/alcohol mix and it comes right off. Not like it’s etching them.

I sent a message to MFSL about this. We’ll see what they say, if they reply at all. Also, I’ve used some generic inners and it’s not happening with them, fwiw.
 

sombunya

Well-Known Member
Oct 18, 2012
133
8
325
Short follow-up, I heard back from MFSL.

They said they had a few other reports of this and it is most likely excessive humidity or some such nonsense. They obviously didn't read or ignored my message when I pointed out it's only their sleeves that are offending. I wouldn't expect much more from them.

So now comes the process of finding and removing them. I've used inexpensive inners with no problems. And so it goes.
 
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XV-1

Well-Known Member
May 24, 2010
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Disappointing response from mofi, but not unexpected.

Imo their sleeves are for audiophools and have thought that for many years.

Good luck cleaning and re sleeving all your records with cheaper safe inner sleeves.
 

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