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Pro-Ject Speed Box S Electronic Speed Changer
The Speed Box S offers a functional and convenient upgrade for many Pro-Ject turntables with a 16V AC motor that do not already have built-in speed control.
The Speed Box S acts as an AC generator for the turntable, replacing the fluctuant supply from a normal 16V power supply and regulating it. The result is a clean power signal that allows the motor to perform optimally. The added convenience is that the Speed Box S can shift frequency, for easy changing between 33 and 45RPM at the push of a button.
| Manufacturer Link | Pro-Ject Speed Box S Electronic Speed Changer |
|---|---|
| Manufacturer | Pro-Ject |
| Delivery Charge | Free |
| Delivery Time | Normally 1 - 5 Working Days (Covid-19 and Brexit Delays Possible, contact us for more information) |
| Card Surcharge | No |
Pro-Ject Speed Box S Electronic Speed Changer
Inside, the Speed Box S makes use of high-quality materials in the quartz-controlled oscillator and filter circuits. Externally it is stylish, compact and minimal - matching any other Box Design S Line component.
Connection is simple, as the Speed Box S is supplied with a link cable that plugs into your turntable instead of the normal power supply. There is also a wide range of compatibility (see below), and in some cases the Speed Box S can even add 78RPM compatibility, when partnered with a special Speed Box Pulley.
Key Features:
- Electronic speed change between 33 and 45RPM (see below)
- 78RPM also possible after fitting accessory pulley (see below)
- Replaces the existing 16V turntable power supply
- Quartz-generated high precision electronic speed regulation
- Creates a cleaner AC mains signal for your turntable
- Allows the motor to run more efficiently and with less resonance
Technical Data
| Input Power: | 18V DC (Supplied PSU) |
| Output Power: | 16V AC / 190mA (3W max.) |
| Nominal Speeds: | 33 / 45 RPM 78 RPM with Optional Pulley |
| Speed Stability: | ± 0.001% |
| Power Cable Length: | Approx. 400mm (Turntable to Speedbox) |
| Dimensions: | 103 x 36 x 104mm 103 x 36 x 115mm (Incl. Sockets) |
| Weight: | 560g |
Pro-Ject Speed Box S Electronic Speed Changer