![]() ![]() The Pro-Ject Speed Box S2 brings both convenience and performance improvements to supported Pro-Ject turntables, and in some cases it also brings 78 RPM support. However, the pulley can easily be switched back in order to restore the turntable 33 and 45 RPM playback. This is the most affordable way to achieve 78 RPM, but it comes at the cost of 45 RPM speed. When the turntable is switched on and the belt is placed around the larger pulley rung, the turntable will rotate at 78 RPM. When the turntable is switched on and the belt is placed around the smaller pulley rung, the turntable will rotate at 33 RPM. The pulley replaces the standard motor pulley, supplied with your turntable to support 33 and 45RPM speeds and the belt replaces the standard drive belt. ![]() The Kit consists of a pulley and square drive belt. The 78 RPM Pulley Kit is a cost-effective solution that allows users to modify their supported turntable without breaking the bank. ![]() However, there are many other turntables in the range that can be modified in order to support Shellac record playback. These models still generally require some level of manual interaction to work at 78 RPM, but they provide the ultimate convenience for audio enthusiasts who have record collections that span many decades. Pro-Ject Audio Systems produce some turntables that will work with at all three speeds (33, 45 and 78RPM) out-of-the-box. However, Pro-Ject Audio Systems also have solutions available for 78 collectors providing a modern, reliable solution for these precious historical recordings. Most modern turntables are designed only to work at 33 (actually 33 1/ 3) RPM or 45 RPM speeds, to accomodate the Long Play 12" and Single (Juke Box) 7" records pressed using vinyl plastic, as we still see used today. ![]() Commonly called 78s, because of the faster speed they were played at, there are still many vintage collectors around today who hold large collections of these early records. Vinyl records before the late-1950s were heavier, more brittle discs - typically either 10" or 12" in diameter - made using shellac resin. ![]()
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