If your "coffee table" is substantially less robust than the platform you are placing on top of it for the turntable to rest on, this will not be sufficient no matter what platform you use. Further, your Verdier is quite heavy and could be exacerbating the spring effects of a relatively light underlying table.
Unless you're using a wall shelf, which you already ruled out, I advocate placing heavy turntables relatively low so they are sitting on a strong structure with short legs spaced widely apart -- wider than the width of the turntable. I have three turntables on floor-standing tables. Two of these turntables weigh 65 lbs. each. They rest on custom-made solid maple tables. The top surface is 4" thick, comprised of twin maple boards laminated. The legs are inset and are 2-1/2" square. a 1-1/2" solid maple lower shelf further anchors the legs. Each leg has a 2" dia. sold brass cone resting into Herbie's brass/rubber/teflon receptor pads. The top surface of these tables is 18" off the floor. The turntables rest on Aurios Classic Media Bearings.
The third turntable is a Garrard 401 in a solid teak Loricraft-style plinth, altogether weighing about 50 lbs. This is on a similar maple table but is taller -- the top surface standing about 25" above the floor. That turntable rests on magnetic repulsion levitation feet, which breaks a feedback loop I'd otherwise have where I must place it.
There are many manufactured racks that can help you but you must remember that your table is quite heavy, and placing it on a tall, light, less-than-rigid structure may result in a variety of problems during rotation, from micro-teeter-totter to transmitted bass vibration via your floor into the structure. It's hard to go wrong with maple or laminated maple, and lower/wider will help your Verdier deliver what it was designed to reveal. Bearings may help further but you should experiment and be driven by results.
Phil
Unless you're using a wall shelf, which you already ruled out, I advocate placing heavy turntables relatively low so they are sitting on a strong structure with short legs spaced widely apart -- wider than the width of the turntable. I have three turntables on floor-standing tables. Two of these turntables weigh 65 lbs. each. They rest on custom-made solid maple tables. The top surface is 4" thick, comprised of twin maple boards laminated. The legs are inset and are 2-1/2" square. a 1-1/2" solid maple lower shelf further anchors the legs. Each leg has a 2" dia. sold brass cone resting into Herbie's brass/rubber/teflon receptor pads. The top surface of these tables is 18" off the floor. The turntables rest on Aurios Classic Media Bearings.
The third turntable is a Garrard 401 in a solid teak Loricraft-style plinth, altogether weighing about 50 lbs. This is on a similar maple table but is taller -- the top surface standing about 25" above the floor. That turntable rests on magnetic repulsion levitation feet, which breaks a feedback loop I'd otherwise have where I must place it.
There are many manufactured racks that can help you but you must remember that your table is quite heavy, and placing it on a tall, light, less-than-rigid structure may result in a variety of problems during rotation, from micro-teeter-totter to transmitted bass vibration via your floor into the structure. It's hard to go wrong with maple or laminated maple, and lower/wider will help your Verdier deliver what it was designed to reveal. Bearings may help further but you should experiment and be driven by results.
Phil