Project Speed Box S2 50Hz Speed Controller

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The Project Speed Box S2 offers an upgrade for many Project turntables, with an improved power supply and automatic switching between 33 and 45 rpm.

For an easy and functional upgrade, the Speed Box S2 acts as an AC generator for any Project turntable with a 16V motor, regulating the power for a stable motor. The Speed Box S2 adds convenient speed switching between 33 and 45 rpm at the push of a button, allowing you to easily play more of the vinyl you love.

The Speed Box S2 uses high quality components, with a quartz controlled oscillator and filter circuits for clean power and optimal motor performance. With its compact design, the Speed Box S2 matches any other Box Design S2 products. A link cable is supplied to connect the Speed Box S2 with your turntable, in place of the normal power supply.

Project Speed Box S2 Speed Controller features

  • Electronic speed change between 33 and 45 rpm
  • Provides clean power at 16V for Project turntables
  • Quartz generated precision speed regulation
  • Turntable motor runs more efficiently with less resonance
More Information
Product Specifications

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



103 x 36 x 115mm



Product Brochures

PROJECT Brochure
Your Delivery:

Orders received before 1:00 pm* will be despatched the same day and can be delivered for next working day, (except bank holidays).  For you convenience you can choose multiple shipping options on the checkout page. We will also email with your tracking and dispatch information.

30 Day Returns Policy

HiFix is committed to selling quality products which we hope you will love, we do understand, however, that there maybe a time when you need to exchange or return something you have bought. We really do hope you are pleased with your purchase but should you wish to return anything bought from us, we will be happy to refund or exchange a product within 30 days.

NameSKUQtyLead time
Project Speed Box S2 50Hz Speed Controller Black477860Warehouse stock usually available in 2 to 3 working days.
Project Speed Box S2 50Hz Speed Controller Silver477870Warehouse stock usually available in 2 to 3 working days.

Warranty information for Project Audio:
Project Audio

Pro-Ject products are designed and manufactured to the highest quality standards. However, if something does go wrong with the product we are here to help. From your date of purchase your product is warranted against faulty materials or workmanship for a minimum period of 24 months.

For new electronics and turntables (not applicable to accessories) you can extend this guarantee to 36 months, customers must register at: (this offer of an extended warranty must be made within 4 months of date of purchase).

This guarantee applies to all Pro-Ject Products including Turntables and Turntable Accessories.Providing you with peace of mind and the assurance of premium Quality.

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