2. analog
  3. 177351-1662

How best to eliminate LP warps

I own about 2500 LPs, and I like to think they're flat.  Furthermore, I espoused the view that warped LPs ought to be discarded.  But lately I have found 2 or 3 of my LPs that do have warps but sound too good and are too precious for the music recorded on them to throw away.  So I am in the market for ideas on how to remove warps.  I am aware that there was a device on the market that looked like a large waffle maker, to be used for warp removal.  I think Furutech made it, but I never see it advertised these days.  I am also aware of the DIY method of placing an LP between two glass plates and heating the ensemble.  The question there would be how hot and for how long?  Any suggestions are welcome, especially opinions on the efficacy of the Furutech.  Thanks.  Please no comments on vacuum hold down; I think it's a great idea but none of my five turntables has that feature.

lewm

Showing 2 responses by petg60

petg60
1,486 posts
 

Why not on direct sunlight between the 2 glasses?

The device you are looking is called Vinyl Flat Record Flattener from vinylflat.com.

petg60
1,486 posts
 

Though late to conversation i think that azimuth is not the holly grail of alignment.

Too much effort with little return but fortunately once there you do not have to look back again. Set and forget.

Overhung, VTA/SRA, VTF, are definitely more important adjustments and should be accurate before any attempt for setting up azimuth. Bias included.

If a system is correctly designed and adjusted then the only source for error regarding azimuth would be any imprecision of the cartridge assembly. So we are trying to correct a faulty product for either stylus or generator, that would require two different settings. Impossible. I choose to check the stylus.

How many incorrectly, by a huge margin, assembled cartridges have you met, that would require so drastic adjustments? Twisting a headshell may help but they can become loose and have slack, so would put azimuth off plus they have to many connections, so finer details would be lost. My understanding is that an arm should not have so much freedom as it would introduce more errors than needed.

A visual set up with the aid of good lighting, magnifying glass or microscope ( much better than shooting macro photos), mirror and a test lp or one with good content of high frequencies would be enough to get you perfectly close (if needed).

Started with wraps and we talk about azimuth, audio is great.

 

 

 

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