Sunday 28 April 2013

CD Duplication and CD Replication - What you need to Know

By Gary Half


It will be easy to choose which technique you should use once you know how the CD replication technique differs from the CD duplication technique. You should base your decision on the number of CDs to be produced, how much time you can wait on the final product, and the quality of sound needed when you have your project created professionally.

If you want to make a lot of a particular CD at one time, then CD replication will offer you a high-quality process. This method will be done by a professional manufacturing facility. With this technique, a mold is made for each run of discs. A high volume of CDs are produced at one time by an injection molding process using the mold. This technique is recommended for quantities over 1,000 discs.

The master CD created for this process is very special. The original sound is introduced to a recording system. This system imprints a positive version of the sound onto a master that is normally made from glass and then transferred to metal. Once these malleable surfaces are imprinted with the recording, copies are made of them with a stamping system to produce negatives. These negatives then have injection molds made of them to create positives again.

CD replication turns out an extremely good quality of music. Injection molds can make a high volume of duplicates that are also covered with an aluminum film and some lacquer for protection. These also go through a hardening process under an UV light before they are ready to use.

The CD duplication process is less complicated, and produces a single copy of a disc at a time. Normally, it is used for creating fewer than 1,000 duplicates. In this process, a computerized disc drive is used to transfer the sounds off an original CD. This recording is then transferred, or "burned", onto another CD to create a perfect replica.

You choose your CDs from three main types of them for this process. Stereo systems and computers that are older are compatible the CD-Rs. The newer DVD players, car and home stereos, and computers will play the CD+Rs and CD-Rs. Select which one you need by the targeted audience. Now, there is also the rewritable version of blank CDs called CD-RWs. These can be recorded, erased, and re-recorded if necessary similar to the old VHS tapes.

I don't think the process of CD duplication produces as high quality of sound as the CD replication technique. However, there is such a slight difference that it takes a well-trained ear to notice. Sometimes during the process a blank CD will show up that was not made correctly. CDs like this are not useable for recording. They still show blank after the process has been performed. You need to insist that the CDs be tested to make sure they recorded the desired material.

Although, the CD replication technique provides a slightly, very slightly, better end product, the cost can be high for low quantity runs. The CD duplication technique will not take long, is inexpensive, and turns out a very nice product.




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