---
title: "AN-14 Preserving the Proper Phonographic EQ curve with Fractional or High Speed Re-mastering"
description: "There are circumstances in which half (or fractional) speed re-mastering of a record recording is necessary. Also, some situations require high speed dubbing. Examples of situations that require fractional speed re-mastering include warped records which cause skips when played at…"
url: "https://diamondcut.com/docs/an14-preserving-the-proper-phonographic-eq-curve-with-fractional-or-high-speed-re-mastering/"
updated: "2022-01-31"
category: Application Notes
---

# AN-14 Preserving the Proper Phonographic EQ curve with Fractional or High Speed Re-mastering

There are circumstances in which half (or fractional) speed re-mastering of a record recording is necessary. Also, some situations require high speed dubbing. Examples of situations that require fractional speed re-mastering include warped records which cause skips when played at full speed. Also, you may have a turntable that only supports 33.3 and 45 rpm, but you want to transfer a 78 or 80 rpm record using it. Conversely, you may have a 16.6 rpm record but do not have a turntable that supports that speed. So, you can transfer it at 33.3 rpm and correct the speed using the “Change Speed” feature.

[Click Here to view the PDF](https://www.diamondcut.com/AppNotes/AN-14%20Preserving%20EQ%20Curve%20when%20Fractional%20and%20High%20Speed%20Mastering.pdf)