Corey's Acrylic Plinth upgrade ...

Corey Manders, a Canadian engineer resident in Singapore and part-time saxophonist who play at the Raffle's City in the weekend. Initially Corey has added almost all my upgrades to his Rega P2 (with stock sticky pad motor):

1. The stainless steel dual pulley with silicone belts
2. underslung counter-weight
3. Aluminium sub-platter
4. Acrylic platter
5. Motor isolation base
6. Top and bottom bracings
7. Record clamp and rubber cork mat

He thought he has done all that's necessary to uplift his "tired" P2.  But the beautiful look of acrylic plinth in my website proved too tempting for him to resist and he decided to go ahead with another round of upgrade! Here's his new P2 TT with Ortofon 2M Bronze cartridge, what do you think?

Hi Michael, 

Though it took me some time, I did change the plinth to my Rega P2, I'm really happy with it. Here are some pictures previous to the change: 

So, I have listened to quite a few albums after the initial changes (motor adjustment, adding the braces, the underslung counter balance of the tone arm, cartridge change, platter and sub-platter change, the pulley change, and the belt changes). There is definitely an improvement in the bass with the plinth change, which results in an overall increase in volume. I was listening to a few steps ahead albums, and the change in bass really requires lowering the amplifier volume. After the change, my family kept asking me to turn down the system for fear of neighbors complaining. I think that is directly attributable to the increase in the gain in the bass. So, here are a few images after the change:

I've put a switch in the box for the PCB you passed to me. I have resoldered all of the wires and extended the red, green, and blue wires leading to the motor. I have temporarily stuck that box under the plinth on the right hand side, using some double-sided tape. It works for now, but I may look for a better looking solution. 

But thanks Michael, awesome job designing the plinth! 


Thanks Corey!

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For Rega RP3, aluminium sub-platter would be the easiest upgrade to begin with. It's almost a "universal truth" that aluminium sub-platter upgrade is a must to replace the stock phenolic one. Here's another testimony from Thim Lee of Perth :

Hi Michael 

Just reporting back on the aluminium sub-platter. After almost two weeks or 30 hours of listening to my RP3 with your Basic Aluminium sub platter.

 All I can say is that I am happy with the product. I am no audiophile but what I notice after the sub platter has settled down is stronger bass, much stronger than on the standard sub platter. And it was lower and tuneful, which makes my whole system come alive. Stronger than any cd I have heard through my Stello transport and dac. Tracking is also much better than before. Lots of ambience and on occasions sounding almost surround like. 

Well, being patience is indeed a virtue. The first time I installed the upgrade, it almost made me beg the question why? There was so much sibilance and transients were gone, and my favorite Dave Grusin record sounded lifeless. And now, a totally different beast. I am listening to Kevin Eubanks at the moment and the bass, the transient, dynamic range are all there. It is clear and 'smooth' sounding like how a record should sound like. Top end is clean too. Not splashy any more and triangle sounds sharp without the glare though without an absolute extension compared to my cd but I would blame this on my cartridge. 

Now eagerly waiting for my aluminium feet to arrive and that should be it for now until my Elyss 2 give up the ghost. Bought some plasticine to use on the feet. 

Take care and talk to you soon.


Thim's second upgrade : Aluminium feet

Hi Michael 

Photos of my Rega with metal sub-platter and aluminium feet. 

The new set of feet has certainly improve focus and reverb and the change is not subtle. 

The sub-platter has I think finally settled in and the overall sound is much more balanced and cleaner with no audible distortion. Have a good one. 

 Kind regards 


Thanks, Thim!

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Cejatan of Queensland (Australia) has a RP6. It's a very good Rega turntable. I also have a bright red RP6 which I have been experimenting with various upgrades (refer to my earlier post on RP6). And I can assure you that Underslung Counter-weight and stainless steel dual pulley upgrades which  Cejatan has chosen to begin with would definitely bring significant sonic improvement to his system. 

Another point to highlight here is my underslung counterweight retrofits the original Rega stub. In case you decide not to remove the original stub for some reasons ( may be fear...  or a stubborn stub simply refuses to budge), you can still add the underslung counter weight to your TT without problem.

Cejatan shares his experience with us here. Enjoy!

Hi Michael, 

HI Michael, Here are pictures of the completed project. I bought the following from you: 

a. Counterweight 
b. Double pulley and 2 belts 

Although I have problem trying to take out the original stub, I still managed with your direction to install the counterweight. With only this, the high registers opened by and the sound was more spatial and stereo separation was much better. 

I next installed the double pulley and the 2 belts. This was much easier with the pulley puller. It took less that 10 minutes. 

I also changed my stainless steel ball to ceramic to complete. With all these changes, I invited some of my friends over to listen. One came bearing gifts....2 dozen vinyls which he had in his garage. Whooola!!!! 

Here are some photos to show the improvements. Anyone out there, I would recommend Michael for the tweaks. 

Until next time. 

Best Regards

Thanks, Cejatan!

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Interestingly as Joe of Chicago put it : " 'Clearly'... is a Very Worthwhile RP1 Modification! ...."

"You are right, I'm a very happy man with the new plinth!" Joe said after upgrading to the acrylic plinth.

Let's not waste a single minute, take a look now at Joe's  new "Clearly" upgrade:

New look with the Acrylic Plinth

I have been adding Michael's modifications to my Rega RP1 for over a year now, each one of them taking my modest RP1 to a whole new level. I felt there was still one very important component that could use improving and that was the plinth itself. At first I asked Michael if he had a Planar 3 plinth that he could sell me, which would be an excellent upgrade in itself. He did; however he told me he was testing a new mod, an acrylic plinth, and said he could have one made for me that would be a replacement for the RP1 MDF plinth. I jumped at the chance and ordered one! 

After just two weeks the new plinth arrived and I began the project of replacing my white MDF plinth with the acrylic plinth. First of all, I need to say that the plinth is visually stunning! It certainly passed "the wife-acceptance factor" as my wife said it was absolutely beautiful, something she has never previously said in regards to any part of my turntable! However it was the very low resonance properties of the acrylic material itself that made me interested in using it to improve the sound of my deck. In that area it really excels, and I am very happy with the results. I have the plinth model that is made to accommodate the motor isolation base which, in turn, rests on the acrylic isolation base. A perfect match! Here are some photos of the project and my initial listening notes 


The plinth comes with three sets of aluminum feet consisting of an upper and lower lock nut with rubber O ring seals. This makes for easy leveling and allows you to screw the aluminum feet mod directly to the lock nuts with the provided screw. Very well thought out on Michael’s part! 

 PHOTO 2: 

Close up of lock nut in place, with screw for threading Michael’s aluminum feet. 


The finished aluminum foot in place with lock nut bolts. Rubber foot inverted and filled with sand, then inserted into aluminum foot. 

 PHOTO 3: 

Next I added the top aluminum brace mod. I used a silicone adhesive for bonding the metal to the acrylic. Note that Michael provides two screws with lock nut washers to help fully secure the bracing to the plinth. 

 PHOTO 4: 

Next I positioned the Plinth over the motor isolation base. Note the pre-cut square opening that allows easy positioning of the base under the plinth. This also allows for very accurate alignment of the double belts with the sub-platter. 


Close up of the motor isolation base with double pulley and double belts. Perfect center alignment! A lower position of the belts on the sub platter is fine as well. 

 PHOTO 6: 

Rega RB 300 tone arm in place. The acrylic plinth and the acrylic isolation base now act as one unified platform for the TT, providing for a great amount of vibration isolation. This has added one great improvement over the MDF stock plinth for my deck. 

 PHOTO 7: 

For any readers interested in the two modules below my deck, they are, at left, a PSU made by Falcon Industries and its accompanying tachometer (The Road Runner) which gives constant feedback to the PSU to correct for speed inconsistencies in the belt drive. The PSU allows for incremental speed correction. I highly recommend this PSU and tach; they offer many major features not found on the Rega PSU or on the Music Hall PSU, in my opinion. This is not an endorsement of these products, just my evaluation. Note that as a testament to Michael’s double pulley and double silicon belt mods, my TT is reading 33.3 steady out to 3 decimal places! This would be reason enough to apply his dual pulley/dual belt mod. This reading was not possible with the stock or the white Rega single belt. 


My Initial listening impressions are as follows: 

The addition of the acrylic plinth improves the sound in many areas. Mostly my LP’s play louder without having to turn up the volume as much as previously. I suppose this has to do with the acrylic plinth’s unique isolation properties over MDF or solid wood. I do not know if it is a better material than solid wood or perhaps slate; however I can hear an improved substantial difference over the MDF material. Bass is tighter and deeper without distortion. The midrange is more fluid, and the highs are more accurate and natural sounding. The plinth is definitely allowing the RB300 and my Ortofon M2 Blue to pass on more information to my amp stages. There is detail in the music now that I have not heard previously, and the soundstage is wider with more air and transparency around the instruments. All in all, the improvements are not subtle! I highly recommend this mod. You will not be dissapointed in the sonic improvements it will make to your deck. 

Joe Borzetta, 
Chicago, IL

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Acrylic Plinth

Clear Acrylic Plinth only
Model CAP1 : USD160.00
So far is there anybody requesting for an acrylic plinth from me for Rega TT? You may wonder. Yes, those turntable enthusiasts who believe acrylic plinth has low resonance property, making it a good choice for TT plinth, can't wait for me to add this to my list of Rega upgrade products. Sorry for the long wait as I have been experimenting it with and without bracings. And I find it sounds best when braced.

Here it is! Fresh from the oven, the new Clear Acrylic Plinth!

In order to maintain Rega's low mass concept, the thickness of the acrylic plinth is kept at 18mm(~3/4"). It is designed basically according to Rega plinth dimensions. Provision are made to accommodate the stock Rega lid as well as 3-point stainless steel spacers with wing nuts tweak. It is compatible with all new Rega tonearms (3-point mount) as well as old models like RB100/RB250/RM300/RB600. Hence, it is a suitable upgrade for existing Rega  models ( P1-P5, Planar2/3, RP1-RP6 ) and also some Goldring/NAD models. 

The clear acrylic Plinth (CAP1, picture below) can retrofit Rega stock rubber feet or my aluminium feet/ adjustable aluminium feet without problem.

P3-24 with Braced Acrylic Plinth

One of the main concern of acrylic plinth is rigidity and this is well taken care of by coupling it with the top alloy bracing and bottom stainless steel bracing. 

How is it?

Beautiful...... both look and sound wise!

Try out and hear for yourself! Hearing is believing !

Happy Tweaking! Remember to specify the model when you place order.

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