friedgreencorrado wrote:
I still think that if you can isolate the parts that actually reproduce the sound (cartridge/needle/etc.) from the vibration caused by the mechanical parts required to spin up the disc in the first place (the motor), you'll get less "rumble" when trying to play something at home. In addition, I think the current love of direct drive turntables today is because of their usage in hip-hop & rap. DJs in a dance club need something that comes up to speed rapidly as they manipulate ("sample") individual portions of songs that are only available on vinyl.
Just a couple of thoughts...
You're absolutely right, you simply cannot use a belt drive for an application like that.
Now, flash back to an era before CDs. The "good" source was vinyl, and radio stations that wanted good sound played records. You would cue for radio the same way- I had to do it in my "radio production" class even though it was the early 90s at that point and we would almost certainly never need that skill.
So Technics, a big player at the time, designed their top of the line turntable with those thoughts in mind. And indeed, the SL1200 and its related SL 1000 with separate tone arm became broadcast standards. Mine used to be in an edit room in a television station.
Okay, but bulletproof isn't everything. The SL 1200 had a huge, huge potential return for Technics. They were setting out to attract a pretty big hunk of a pretty big market (which they got) so they spent a lot of R&D. If you compare that to a boutique "audiophile" builder today, they sell what are very nearly their prototype designs. Many are very light weight, to the point of being what I'd call fragile. At least the ones under a grand. And that can be bad. Isolation is key with turntables, and mass at rest tends to stay at rest. The big, brick like Technics is solid. You can knock on the thing with your knuckle while it's playing and hear nothing transmitted to the cart.
By contrast, a Rega or Music Hall will pick up your footsteps as you cross the room. So the belt isolation isn't really getting you a lot. The plinth is so light the vibration of the motor is transmitted directly or through the furniture. The better belt designs have the motor and power supply outside the turntable and only the belt connects the two. So the vibration can only be transmitted through the furniture they're sitting on.
I'm not saying it well, but the point being, an SL1200 may be "direct drive" but people misunderstand what that means. The platter is driven by magnets. There's no "motor" as in a belt drive, the platter is part of the motor. And the motor is amazingly torquey. It gets up to speed right now, but that platter is still pretty heavy. So it easily damps the motor pulses. And the mass of the table absorbs a load of vibration. If you've ever seen one in pieces, there's a big, heavy kind of rubber thing in there that fills much of the table volume. Damping is everywhere in that table, unlike the inexpensive audiophile belts.
So it comes down to performance by cost. I have no doubt that even an "entry level" VPI sounds better than an SL1200, but their "cheap" table costs more than my whole system. I'll stack my SL 1200 against a Rega any day. That's more of an apples to apples comparison because the cost is much closer. And in that price range, the Technics is, in my opinion, vastly superior. I've used both and can't imagine taking a Rega over a Technics.
Jeez, one last thing- set up is everything on a turntable. An SL is easy to set up and has all the adjustments you need. You can set VTA on the fly. Many of the audiophile tables don't have any VTA adjustment, or have a very crude design that makes it impossible to make very fine adjustment. Getting VTA right is critical to making a table sound its best.