To add a motor isolation base to Pro-Ject TT is even simpler than doing it on a Rega TT.
By "isolating" the motor from the Pro-Ject TT plinth brings about better performance of the TT. Let's take a look at Kelvin's pictures and his review after installing the motor base.
Hi Michael, Received the isolation base last Saturday. Took me quite a few hours to set up. First I had to enlarge the motor housing hole of my 1xpression plinth. It was relatively easy by rim off some material but the process was a bit tedious if you don't have the right tools. Luckily for me, I had a hand drill. Thanks to your 3mm bolts, I selected the 3rd longest pair and bolted the motor to the base. Once that is completed, I adjusted the base within the motor housing. In addition I cut a 40mm by 40mm of 1mm thickness sorbothane sheet to isolate the steel base. This will absorb any vibration from the motor. My setup up if you see from the pics I sent, shows my turntable is sitting on a home made sand box.
When all was done, I loaded my hi-fi news test record and played side b, track 6. This is a silent track and to what I had expected, the low rumbling noise was gone. It was quiet even when I increased volume beyond comfortable range. Next I loaded in a few musical tracks. From classical to jazz and some rock. Especially the silent passage of the the classical track, it was quiet. The bass also improved. The rumbling will take away some low end definition but now that it was gone, the low end became tighter and more accurate. My 1xpression is entry mid level player. With this fix and my setup, I think it will easily match those tables costing 2-3 times more. I have attached some photos.  Thanks. |
Thanks Kelvin!
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