Pro-Ject - Speed Box S2

 (Silver Finish)




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EAN: 9120082380409
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Turntable Accessories


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"…I was more than a little surprised by the level of improvement it wrought from my system. You get substantially improved sound from your turntable and push button speed change to boot….for $159, you really can't go wrong. In fact, I would say it's one of the most cost effective improvements you can make to your system. If this little box works with your turntable, and you don't have an electronic speed control already, you are missing what your rig is truly capable of." – Adam Goldfine, Positive Feedback Online, Issue 31

Speed Box MKII Precision turntable power supply is a microprocessor driven supply designed specifically for Pro-Ject Audiophile Turntables utilizing A/C synchronous motors. The exact frequency and amplitude of output voltage is ensured through the use of a quartz oscillator coupled with an extremely low distortion amplifier to supply the turntable with a pure signal that could never be provided by using the standard wall plug adapter. The net result of this power supply is a very smooth and quiet motor providing a significant gain in audio performance.

Upgrading the performance of your turntable with comfort through speed switching at the touch of a button!

Useful accessory for Pro-Ject turntables that do not have a built-in electronic speed switch. Speed ??Box S2 allows switching 33 and 45 rpm at the touch of a button! The filtered and quartz-stabilized control allows for smooth running with the lowest possible speed deviation. Speed ??Box S2 is compatible with many Pro-Ject turntables and on some models with optional Pulley SB it is also possible to play shellac records (78 rpm)!


Technical Specifications:

  • High precision quartz-stabilized motor control for turntables
  • Sound improvement through maximum smoothness of the motors
  • Clean supply voltage without negative influences from the mains
  • Electronic speed change between 33 & 45 rpm
  • 78 rpm possible with optional pulley (accessory)
  • Suitable for all turntables with 16 Volt AC Motor, with a maximum power consumption up to 3 watts
  • Metal housing protects against vibration and electromagnetic interference
  • Compact housing for placement close the turntable
  • DC power supply (<1 watt standby consumption)
  • Available in silver or black
  • Supplied with a 15" captive power cord for connection to turntable.

Customer Reviews (4.86 Stars) 7 person(s) rated this product.

high value turntable upgrade

posted on 02/09/2010
5 Stars
Reviewer: Craig Campbell
I added the speedbox to my Music Hall 5.1 turntable and the improvement was not subtle. The improvement in pace and timing was remarkable. For the price you owe it to yourself to add this to your Pro-ject or Music Hall table.

It works well.

posted on 08/19/2009
5 Stars
Reviewer: RDavis
Not much to say other than it does what it is supposed to do, and does it well.

An excellent addition

posted on 12/03/2007
4 Stars
Reviewer: Jacques Letondot.
Do not forget to set the turntable belt on the 45rpm speed pulley otherwise you may get very unusual results. Otherwise a very straightforward installation with excellent results.

Excellent upgrade

posted on 01/20/2007
5 Stars
Reviewer: Dave
This is a terrific upgrade for the Pro-Ject Debut III. There is less flutter, and you no longer have to remove the platter to change speeds.

As another review mentions, the cable is quite short and I had to be creative in placing things on my rack.

Still, for what you get, it is well worth the money.

GREAT UP-GRADE for Thorens TD166mkII

posted on 12/12/2006
5 Stars
Reviewer: Robert
I see in all the ad's for the Speedbox no one says anything about that in the US it change the mains from 60Hz to 50Hz and you can use it in any Thorens with 16volt motor and a 50Hz pulley making One Hell of a Great Up-Grade for my Thorens and sound as good as a Linn

Great addition to a budget system

posted on 10/30/2008
5 Stars
Reviewer: Derek
I have a Project Debut III and this was a worthwhile addition.

Solves Pro-Ject motor hum

posted on 06/22/2006
5 Stars
As I got my system setup properly, I started to notice that their was a slight (VERY small) hum in my motor. Stelly was good enough to send out a replacement, but it was still not absolutely silent. This upgrade did the trick. As a bonus you can switch from 33 to 45 without the cumbersome motor change, which is a plus. Only negative is that the included cord (from this unit to the table) is very short so it limits the placement options. Worth every dime for Pro-Ject owners.

PS - Stelly, please stop trying to sell me Starland Vocal Band LPs whenever I place an order. I know you dig them, but I'm just not interested...

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