Turntables: 2 Tonearms. What do you Have or Know About?

I have been trying to find a settlement with the idea of a Cantilever Sidebar TA Mounting Arm Board.

The Bolt Down method commonly seen is simplistic and hopefully is not compromised as a design.

I have a design in place for one of my Panzerholz Plinths to receive a Cantilever Side Bar TA Mount, where I have attempted to avoid  the usually seen Bolt Down Fastening of the attachment.

My design which lends itself quite nicely to being done in P'holz, is a interference fit Mortice and Tenon with a Flange to receive retaining fastenings into threaded inserts placed into the main plinth, as well as having two threaded inserts, inset into the Side Bar flange to receive fastenings to help release the part when not wanting it attached. The idea is for there to be a few parts produced, to be exchangeable, enabling working with differing lengths of Tonearm.

Slots to be used for allowing setting up varying length TA's in Plinths or Arm Boards are something I have commenced avoiding quite a few years past, all leads back to the rigid coupling principles.

My last two produced Plinths have extremely tight tolerances machined into the Plinth to receive the TA that is now used.

The Producer of my most recent produced Plinth, has an identical dimension Plinth > TT > TA and they are settled with a Slot in their Plinth.

Each to their own when it comes to such subjects.

I will be in a position to learn if a sonic is affected between a Plinth Mounting and Side Bar Mounting a TA, I will be settling with that as the only goal.  

@pindac  sorry for slow response. I have so far somewhat limited experience combining various thickness of Panzerholtz with HRS ( Harmonic Resolution Systems ) products - Typically NIMBUS couplers. So far i have had sonic rewards by reloading my NAS, Optical Isolation, ROON Core and a variety of Linear PSU on to 20 + MM Panzerholtz shelves / platforms. Hopefully this helps. my analog components all utilize CORE audio and or HRS products.

Best to you - I always enjoy your excellent contribution here

Jim

@pindac  sorry for slow response. I have so far somewhat limited experience combining various thickness of Panzerholtz with HRS ( Harmonic Resolution Systems ) products - Typically NIMBUS couplers. So far i have had sonic rewards by reloading my NAS, Optical Isolation, ROON Core and a variety of Linear PSU on to 20 + MM Panzerholtz shelves / platforms. Hopefully this helps. my analog components all utilize CORE audio and or HRS products.

Best to you - I always enjoy your excellent contribution here

Jim

@tomic601 The individual that I refer to as the Godfather of using P'holz for Audio use, has supplied information on their Qualia Labs Website about many materials measured damping/dissipation.

Their follow up exchanges that can be found on various forums, strongly siggests that when it comes to Board Thickness, a 10mm Board Thickness, is all that is required for a Phenolic Resin Impregnated Densified Wood (PRIDW) to attain the most desirable measurements for Audio Purposes.

I have been demo'd plinths made from Laminations creating a 35mm Board Thickness and from a typical production Board Thickness in both 25mm and 32mm. The detected differences on a Sonic in these thicknesses, are not as immediately discernable as when a PRIDW Plinth is compared to a standard Birch Marine Plywood, or a non-resin impregnated increased in compression Plywood.

I have a PRIDW Board of a 75mm Thickness, this is selected to embed my TT's Motor Unit into when I put together my own SP10 MkII Kaneta Design.

Here's mine....I've had it for just a few months but I really love it.  Turntable was made by Joel at Audiowood in NOLA.  The arms are both Audiomods, one is a 10.5" and the other is a 9".  Koetsu Rosewood on the 9" and Soundsmith Paua on the other.