ESOTERIC SOUND Re-Equalizer Manual de usuario descargar pdf (Pagina 5)

The photos above are of British London/Decca LPs made circa 1954. The left matrix number has the

raised, large font commonly associated with RIAA/-10 dB equalization. The right matrix number, ARL-

1425, would ordinarily indicate an earlier equalization; however, it has the engraved into font associated

with RIAA/RIAA equalization. Also, note the “R.” That signifies remastered for RIAA.

US DECCA OLDER MATRIX US DECCA NEWER MATRIX

US Decca has a similar distinctive matrix identification. Also note the higher “Take Number,” or “Stamper

Number.” Usually, smaller Take Numbers are associated with pre-RIAA records. The record on the left

requires 800/-8 dB equalization in order to make it sound like the RIAA on the right.

US COLUMBIA OLDER MATRIX US COLUMBIA NEWER MATRIX

US Columbia follows similarly. Note that both matrix numbers are the same. The RIAA issue, however,

has smaller Arial font, and also larger Take Numbers.

US COLUMBIA OLDER MATRIX (Version 2) US COLUMBIA NEWER MATRIX

Sometimes font characterization is not enough. Above, only the take number and label are different.

Labels can tell a lot about a record’s age.

These US Decca labels are from the

same recording of show music. On the

left is the earlier, pre-RIAA version. On

the right is the later, RIAA version.

However, this is not a guarantee of a

records age, but one of several

indicators. It was the Matrix Numbers

that confirmed this equalization choice.

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ESOTERIC SOUND Re-Equalizer Manual de usuario Pagina 5