goatbreath wrote:I also wish I had more space so I could have more turntables set up..For all the cartridges/Arms/Turntables and the geometry of the stylus/arm set up etc....The really Important thing that people never seem to talk about is what the turntable sits on...I have messed around a lot with this...The difference it makes is huge...It is all part of the set up of that particular turntable as far as I'm concerned and a lot of the commercially available options make things sound worse..
Every turntable likes a different surface..Even the different suspendeds,,you can bring out the best in them by just how lossy that surface is..Go too far and you lose something,,not far enough and the vibrations get back to the stylus....Every suspended deck likes a different degree of this..I guess that applies to the actual cartridge compliance too..Try sitting a suspended deck with a low mass tone arm/high compliance cartridge on a piece of glass and hear acoustic feedback..Stick some feet on a piece of lossy wood,,hear it disappear.That is a night and day obvious version of what I am describing..
I was recently reading a review comparing a Hadcock unipivot and the Dynavector ultra massive bi-axial design...
Ultimately, the reviewer seemed to marginally prefer the Hadcock in some circumstances, but ended up purchasing the DV for himself!
One of the things that reviews of the hadcock have mentioned is that it is extremely sensitive to external vibrations - being a unipivot the design is ultra light and inherently unstable (sort of like an aerobatic aircraft, very very nimble but inherently unstable) - the fluid damping around the pivot is used to stabilise it.
This instability means that if vibrations hit it, it can take a few cycles (or longer) to settle.
So when placed on some surfaces, it simply did not sound great, it was constantly being unsettled by vibrations impinging via the plinth, unsettling the arm.
Placed on a truly totally isolated platform, it then becomes a truly top level performer.
The DV arm on the other hand has massive inertia, tiny vibrations tend not to bother it... in the same situations, on the same tables, the DV would keep tracking well.
Does an arm like the DV sound better on the totally isolated platform, than on the flimsier rack - YES, but the difference is subtle.
Does an arm like the Hadcock sound better on the totally isolated platform... oh my god yes - it is not at all subtle, more of a chalk and cheese change!
I currently have 2 tables in use - one is the Revox Linatrack, linear tracking ultra light unipivot arm with magnetic damping, on a sprung chassis - This one seems to be relatively insensitive to external vibrations, and worked well on my previous rack setup.
My 2nd table is a JVC QL-Y5F with the servo damped S-Arm... this one had a series of vibration issues on the same platform as the Revox...
First the feet are (were) screwed into a flexible baseboard, the baseboard and plinth creates a drumlike enclosure which would resonate, and the feet would move with the resonance... need I say more! - I extensively damped the plinth, and immobilised the baseboard, and replaced the OEM feet with ISO9H footers including one in the middle of the baseboard to damp and immobilise/pressurise it.
Sound took an immediate turn for the better.
Then the setup was very sensitive to footfall, you could hear every step someone took around my house.... I added a concrete paver on Sorbothane pads, and mag-lev stands under the platform - Another huge difference - the reduction in noise at low frequencies was on the order of 20db+ (yes I measured it)
Now the JVC is performing very well indeed - the Revox on the same platform, I believe it to be better, but the improvements are subtle and as I do not have an ability to A-B the before and after, I am not sure whether there is an improvement - the Revox setup is inherently quite well isolated to start with!
And then one can talk about other parameters - like the fact that putting a 1.5kg arm on a suspended table can be a problem (!!) - the Dynavector arms cannot be fitted to all turntables, and many of the ones where it can be fitted, require special work/tuning to the suspension to handle it.
We sort of tend to assume that vibration control has been implemented for each person's setup - but in reality this is not always the case.
And this is the area where the biggest improvements are frequently available for the lowest costs... (Paver = $10, Sorbothan Pads = $12 - total $22 for the biggest single improvement to the JVC tables performance!)
Suspended tables tend to be easier, in that they have more inherent isolation... but the benefits are still there
bye for now