How to tell if a record is 78 rpm

How to tell if a record is 78 rpm

Vinyl records come in various playback speeds, and one of the earliest formats is the 78 revolutions per minute (RPM) record. If you’ve come across a record and are unsure whether it’s a 78 RPM release, fear not! In this article, we’ll guide you through some key indicators that can help you determine if a record is indeed a 78 RPM gem. By understanding the visual cues and characteristics specific to 78 RPM records, you’ll be able to identify and appreciate these vintage treasures in your vinyl collection.

  1. Label Design and Markings:

One of the first places to look for clues is the label on the record. Many 78 RPM records will explicitly mention the speed on the label itself. Look for indicators such as “78 RPM,” “78,” or “78 Rev” printed on the label. This clear designation confirms that you’re holding a record meant to be played at 78 RPM.

  1. Record Diameter:

Another distinguishing feature of 78 RPM records is their size. While most vinyl records, including 33 RPM and 45 RPM, have a diameter of 12 inches (30 centimeters) for full-length albums and 7 inches (17.5 centimeters) for singles, 78 RPM records are typically 10 inches (25 centimeters) in diameter. Keep in mind that there are exceptions to this, especially with older 78 RPM releases, but a smaller diameter can be a strong indication of a 78 RPM record.

  1. Record Composition:

78 RPM records were typically made of shellac, a brittle and breakable material, rather than the vinyl used in later formats. As a result, they tend to be heavier and have a distinct appearance. When examining a record, if it appears thicker and feels heavier compared to typical vinyl records, there’s a higher likelihood that it’s a 78 RPM record.

  1. Groove Width:

The groove width on a 78 RPM record can provide additional clues. These records have wider grooves compared to later formats, such as 33 RPM and 45 RPM. You may notice the groove width being visibly wider when inspecting the record with good lighting. However, this method requires a trained eye and may be more challenging for beginners.

  1. Catalog Number or Matrix Code:

If the record has a visible catalog number or matrix code etched into the run-out groove area, researching the code online can often reveal the original release format, including the speed. Look for resources that provide information on catalog numbers or matrix codes to help you determine if it corresponds to a 78 RPM release.

Conclusion:

Identifying a 78 RPM record involves examining various visual cues and characteristics. Check the label for explicit speed markings, observe the diameter and weight of the record, and pay attention to the groove width. Additionally, researching catalog numbers or matrix codes can offer valuable insights. By combining these indicators, you can confidently determine if a record belongs to the distinctive world of 78 RPM records. Embrace the historical significance and unique charm of these vintage treasures as you continue to explore the wonders of vinyl.

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