Corey Bailey
           Audio Engineering
USEFUL INFORMATION
                        PLAYING RECORDS WET The first thing that came to mind about playing a record wet is that water has viscosity which should affect how the stylus interacts with the groove. So, I set out to see what the difference may be. Only certain types of records can be played wet. Basically, any record that is made of solid material throughout is OK. Those records that have a fiber core are out. Any record that is laminated with a fiber core should not be played wet or cleaned with a solution of any kind. Lacquer coated discs (Lacquers) can be played wet if they are in playable condition and have a metal or glass center. After a through cleaning, I used plain distilled water with nothing added. The type that is sold at your local supermarket. When playing a record wet, I like to smooth the water out with a fine bristle brush so that the water is spread evenly over the entire groove area. I do this by running the turntable at speed while the tonearm is securely fastened to it’s rest. Obviously, I use a manual turntable because it cannot be done with an automatic one. With an automatic turntable, you will have to hold the platter steady with your fingers or such while you apply the water and smooth it with the other hand. Avoid getting any water on the label. If you do, wipe the label immediately with a dry towel. Some cartridges have dust brushes attached. I haven’t tried playing a record wet with that type of cartridge/stylus combination. Some cartridges sit parallel to the record and tend to trap the water beneath them while playing. I haven’t found it to be detrimental when that happens. Those same cartridges have even got the lower connections wet and it was not a problem (yet). However, I did dry and clean those connections when I was done. How much water to use? About a drop every couple of inches (About 5 CM) seems to be adequate. Do this for each band (song). I have noticed that the center grooves tend to dry out on long playing media. When this happens, I will carefully drip some more water on the surface while playing. Brushing is out while playing a record. I tested both Widegroove and Microgroove records. I used all three speeds, dry and wet. I tested all formats with both conical and elliptical styli. I used test records for each format and then ran the test with music that I was familiar with. I ran the tests using outboard test equipment, software, and my hearing. I listened through headphones and a couple of pairs of speakers. The only thing that the test equipment and software could come up with was a slight difference in level; about a half of a dB which is generally imperceptible. Other than that, the frequency response, and the other test parameters were effectively the same. The tests that I ran were for my own curiosity. In the scientific community, the tests would be referred to as empirical. When doing the listening tests, I thought maybe I heard a small difference in the harmonic content, but I wasn’t sure. The difference that I thought I heard was with an elliptical stylus. With a conical stylus, I could hear no difference. I have tested every type of record that I can think of wet and dry and the one thing that stands out is the fact that any record, regardless of the type, will play quieter. Scratches and surface noise are noticeably quieter in all formats. So, grab a record with content that you are familiar with and perform the test for yourself, using your ears. If you have record that is noisy and full of scratches, try playing it wet. Return to TOP of page © Corey Bailey Audio Engineering
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