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Dear music lover,
thank you for purchasing a PRO-JECT AUDIO Speed Box MK II. * The unit permits electronic speed change
of your Pro-Ject record player between 33 and 45 r.p.m. and also permits the replay of shellac records by
allowing ** 78 r.p.m. with an appropriate pulley and cartridge.
Only models with mains socket power supply. 16V/190mA AC max..
* The Pro-Ject Debut III/Phono SB, Pro-Ject 1.2 Comfort and Pro-Ject RPM 6.1 SB may not be used
with the Speed Box. These models are equipped with an electronic speed change as a standard.
In order to achieve maximum performance and reliability you should study these instructions for use carefully.
Warning of a hazard for the user, the unit or possible misuse.
Important notice.
Connecting the record player
Connect the low voltage plug (Output ~16V) from the Speed Box to the socket in the record player's motor.
Make all connections whilst the Speed Box is disconnected from the power supply.
Mains power connection
The Speed Box is supplied with a power supply suitable for your country's mains supply. Check the label
before connecting to ensure compliance with the mains rating in your house. Connect the low voltage plug
from the power supply to the socket Power ~16V before connecting the power supply to the mains.
Speed selection 33/45 r.p.m.
33
45
The belt must be on the smaller (50Hz models) larger (60Hz models) diameter part of the motor pulley. Press
the speed change button to switch between 33 and 45 r.p.m.. The selected speed is shown respectively by the
lit LED. To play at 45 or ** 78 r.p.m. please always start the turntable at 33 r.p.m. and then switch to the higher
speed when it has attained full speed.
Replay at 78 r.p.m.
** In order to replay shellac records at 78 r.p.m. your turntable must be equipped with the 78 r.p.m. pulley
which is available as an optional accessory for most models.
After fitting the 78 r.p.m. pulley please proceed as follows: Remove the platter and using the tool from the
accessory kit fit the belt around the larger diameter step of the pulley. Replace the Platter, start the turntable
at 33 r.p.m. and switch the speed to 45 r.p.m., the platter will then revolve at 78 r.p.m..
Fitting the 78 r.p.m. pulley
Before beginning work fit the cartridge's needle protection cover.
Remove the platter and drive belt. Please remember that sweat or sticky fingers will impair the function of the
belt. Use a piece of kitchen paper or a cloth to remove the belt.
Measure the height of the pulley above the plinth in order to ease correct refitting.
Using a small screwdriver loosen the grub screw in the neck of the pulley just enough to remove the pulley
vertically without using force. Refit the pulley in the opposite order. Tighten the grub screw carefully making
sure you do not overtighten it.
Fit the drive belt around the subplatter and the pulley. Again, use a piece of paper or cloth to avoid soiling
the belt. Replace the platter.
** 78 r.p.m. is not available with the models 1.2 Comfort, Xperience, Xperience "SuperPack" RPM 9.1
and RPM 9.1X.
The models Debut III/Phono SB, RPM 5, RPM 5 "SuperPack" and RPM 6.1 SB are equipped with an
mechanic speed change for 78 r.p.m.. Switching to 78 r.p.m. with the Perspective is done by
exchanging the motor and belt.
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© Pro-Ject Audio · Pro-Ject Speed Box MK II · Revision 10.10.05/1.12.05
Speed Box MKII
Speed
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