Motor base (model IB22) - USD100.00
( for most Rega and Project TT's )
As we know for the Rega Planar 2 ( and Planar 3), the motor is suspended to the plinth using a rubber band. No doubt it's effective to a certain extend for isolating the motor vibrations since the motor is not directly mounted onto the board. However as the motor spins, it also wobbles when the rubber belt stretches or contracts. As a result, there would be speed inconsistency.
In other later models like Rega P1, P2, P3, P5, RP1, RP3, RP6 (with low-vibration motors), double-sided tape is used instead of rubber band to attach the motor to the board. This is a simple way to reduce motor vibrations from reaching the record surface and the stylus. But low vibration does not mean no vibration. The stylus is sensitive to vibrations that is micro in nature.
There are many ways suggested to reduce this motor vibrations e.g by dampening around it or to upgrade to a low vibration motor/high performance motor. But, nothing is better than to "separate" the motor which is mounted to the plinth!
The idea of an off-board motor
Separating the motor from the plinth looks like involving a lot of work. Many might just wonder how easy is it for them to put the motor "off-board" or out-board? In my case, I put the motor "below-board" (also "off-board", of course). This is done without involving any drilling.
Let me show you how I do it:
i) Remove the motor by opening the the motor compartment cover, loosens the two screws holding the suspended motor, the bracket and rubber band.
ii) Fix the motor onto the stainless isolation base, IB22 ( my "invention") either by screws or acrylic tape.
iii) Change the rubber feet to slightly higher ones so as to raise the height to accommodate the isolation base,IB22. The motor is now anchored firmly ( by the weight of the isolation base) below the board by about 2 mm.
iv) Align the motor pulley to make sure that the motor is not touching the board.
(For Planar 2/3, we will see two holes on the plinth which are not used anymore)
This stainless steel isolation base, IB22, that I've used above not only acts as a vibration-sink, but also a heat-sink; the motor runs much cooler due to faster heat conduction as well as better ventilation. It actually out-performs the Rega Planar 3 motor upgrade (click link to read comparison).
Holding the loose off-board motor
In order that we can still move around the turntable (whenever necessary) with the motor/isolation base unattached to the plinth, I use a piece of rubber mesh netting to hold the assembly. This rubber mesh netting covers the motor/isolation base and power supply compartment and is kept in place by plastic brackets using the existing screws holes (originally for the stock plastic cover). No drilling is required.
Note: The rubber mesh netting is slightly slack and the motor base actually rests on the same surface as the turntable feet. It's not touching the plinth or hanging on the plinth/netting.
Now you can sit back and enjoy surprisingly nicer music!!!
*Keep the original Rega rubber feet (3 pcs) and motor compartment cover as motor isolation base upgrade is reversible. You may put it back to original Rega TT should you decide to upgrade to other TT's in the future.
* Read more on >> : Alternative way to hold the motor base during transportation
Plastico of Canada gave his comments on vinylengine after using the motor isolation base for his P3-24:
Chris Tasker of Canada gave his comments after using the motor isolation base on his P5 :
Al Sands of New Zealand gave his comments after using the motor isolation base on his Planar 3 :
Bernard Gould of United Kingdom gave his comments on motor isolation base and dual upgrade for his Rega P25(24V motor):
Jan Beltman of Netherland gave his comments after using the motor isolation base on his NAD533 (with 24V motor) :
Kogfy of Larkspur Colorado, gave his comments after using the motor isolation base on his Planar 2 :
The Motor isolation solution is brilliant!
This isolation base is suitable for most Rega and Pro-ject turntables as well as some Thorens models.
Arthur of California gave his comments on motor isolation base upgrade for his Pro-ject 2.9 wood:
Ronald Bonner of Dallas gave his comments on motor isolation base upgrade for his Pro-ject Debut Carbon:
Read more on >> how to make an outboard motor
Convenient to those who are spinning a few Rega TT's. This can be a common motor!
Also it's easier to move around your turntable with this option.