Pro Ject Speed Box S2 power supply Black
The Speed Box S2 offers a functional and convenient upgrade for a lot of the Pro-Ject turntables with a 16V AC motor that does not already have built-in speed control.
The Speed Box S2 acts as an AC generator for the turntable, replacing the fluctuant supply from the normal 16V power supply and regulating it. This results in a clean power signal that allows the motor to perform optimally. The Speed Box S2 is convenience as it can shift frequency, for easy changing between 33 and 45RPM with just a push of a button.
Inside, the Speed Box S2 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 S2 Line component.
The connection is a simple process, as the Speed Box S2 comes 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 add 78 RPM compatibility when partnered with the special Speed Box Pulley.
Please Note: The Speed Box S2 will not work with newer Pro-Ject turntables that feature a DC power supply. It will only work with older AC powered turntables that feature an external 16V power supply and do not already have built-in speed control.
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
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
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