My understanding is that is precisely what it provides. If I didn't have vacuum hold down on my TT it is the one I would try.
I hear you, but I don't think foam - in any form - offers the right impedance
My understanding is that is precisely what it provides. If I didn't have vacuum hold down on my TT it is the one I would try.
Thanks Marc, I believe Delrin is an option on the TechDas as well?!? I am seeing more and more such mechanical impedance solutions gravitate toward some sort of vinyl, and at least based on what I hear during my experiments, it feels like it's the right direction for optimal coupling to the platter... Strictly speaking, we are talking about thermoplastics like delrin, Isodamp or typical vinyl.
I hear you, but I don't think foam - in any form - offers the right impedance
why not make the platter out of the right material to begin with?
as I mentioned earlier, this was the general idea behind the NVS platter. a sympathetic composite to vinyl for ideal performance.
why not make the platter out of the right material to begin with?
as I mentioned earlier, this was the general idea behind the NVS platter. a sympathetic composite to vinyl for ideal performance.
Ack, my Trans Fi Audio Salvation direct rim drive tt uses an Al platter.
But bonded onto the platter are multiple small Delrin cones that in effect the lp sits on. Delrin is pretty close to vinyl as a material to be used, and indeed softer (meaning no damage to the lp as it rests on the cones).
I'm sure this has a major bearing on the sound of my vinyl playback compared to when previously the lp sat directly on the metal platter.
The top layer of the platter is an acrylic material, impedance-matched to the vinyl record. A special damping material isolates the mat from the platter, a one-piece cast aluminum frame integrated with a variety of special damping materials.
AMG Viella V12 turntable with optional 2-tone platter
A special version of AMG’s Viella V12 with white top emphasizes that the massive aluminum platter has a PVC mat inlaid, bonded, and machined for mechanical impedance matching with the vinyl LP.
So it is just marketing language to say they don't have a (highly) reflective surface for the LP to ride on... That is all that means.
Folsom, do you think it is better to have a highly reflective surface for the LP to ride on? Interestingly, my friend, and others, prefer a copper platter top to the rubber mat on the Technics SP10 Mk 3s. The TechDAS has a few options. I wonder which is the most popular. It probably has a lot to do with how noisy the platter is and whether or not it transmits much of the bearing or drive train noise to the vinyl. There is also noise from the stylus tracing the grooves which must travel through the vinyl and onto the platter. Whether or not this gets reflected back may also be an issue. I wonder if the thickness of the vinyl matters.
So it is just marketing language to say they don't have a (highly) reflective surface for the LP to ride on... That is all that means.
Folsom, do you think it is better to have a highly reflective surface for the LP to ride on? Interestingly, my friend, and others, prefer a copper platter top to the rubber mat on the Technics SP10 Mk 3s. The TechDAS has a few options. I wonder which is the most popular. It probably has a lot to do with how noisy the platter is and whether or not it transmits much of the bearing or drive train noise to the vinyl. There is also noise from the stylus tracing the grooves which must travel through the vinyl and onto the platter. Whether or not this gets reflected back may also be an issue. I wonder if the thickness of the vinyl matters.
Folsom, do you think it is better to have a highly reflective surface for the LP to ride on? Interestingly, my friend, and others, prefer a copper platter top to the rubber mat on the Technics SP10 Mk 3s. The TechDAS has a few options. I wonder which is the most popular. It probably has a lot to do with how noisy the platter is and whether or not it transmits much of the bearing or drive train noise to the vinyl. There is also noise from the stylus tracing the grooves which must travel through the vinyl and onto the platter. Whether or not this gets reflected back may also be an issue. I wonder if the thickness of the vinyl matters.
If this latter part is true, then that may lead us to wonder if a single mat or weight design can have a net positive effect across all TTs or if designs will need to be specific to particular TT architectures or implementations?
In my instance it's pretty clear to me that it's very easy to negatively affect the transient performance in particular, with any damping material or device added to the base design...
Cheers, Joe
Peter,
I think you hit the nail on the head. There is no prefect mat that works on all turntables, it's dependent on the turntable platter materials and the design of the turntable itself.
There is no prefect mat that works on all turntables, it's dependent on the turntable platter materials and the design of the turntable itself.
Peter,
I think you hit the nail on the head. There is no prefect mat that works on all turntables, it's dependent on the turntable platter materials and the design of the turntable itself.
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