Set-Up Accessory Reviews

I want one. If just to pull peoples' pants down with... roll roll whoops!

Seriously, this thing looks brilliant. You say it's accurate, so it is.

Or you could use your phone and the RPM app. Gives speed + wow & flutter. Pretty sure RPM is free.

At the moment I am busy with modifications to my turntable.
I achieved the greatest success by maximizing the torque of the motor not only to the turntable platter, but on the records itself. The fewer records can make other movements than the turntable platter, the more spectacular are the tonal improvements. All tonal aspects benefit in massive amounts from that, including very low surface noise. That is the reason why many manufacturers suck the records tightly to the plates with a strong vacuum. But the interface in front of it is of course the turntable platter, the belt and the motor. The less torque from a motor acts on a record, the worse the sound quality. Rotating mechanics, especially if they are to move precisely and with as little friction as possible, must be balanced so that a synchronous run is possible at all. If you now place the elongated measuring device you have described, on a platter that has a powerful motor, the measurements should be more precise. But of course, the Device is not shaped as a disc, so it is unbalanced, and it could be, that this will disturb the measurement itself. When one put the measuring device on a turntable platter, and it is not shaped like a disc with evenly distributed mass, the question arises in me, as to how accurate measurements with such a device are possible? Until now, turntables with belts made of rubber are predominantly offered, the worst material for power transmission because it is too elastic. And there are still too many motors installed that have too little torque. If you put something, in this case the oblong measuring device, on a turntable like a Rega or a Linn, will it affect the measurement results, or what is your opinion?

This is my experience with belt-driven and even rim-driven turntables. Even with considerable motor torque, belts are elastic. You can actually measure this effect by using a smart phone app to measure the speed. Whatever its accuracy, once it has reached a stable reading, adding even small weights to the platter will decrease the speed. So, for instance, a VPI turntable's speed calculated without the center weight or ring-clamp will be considerably higher than when those accessories are on the platter. In fact, placing the smart phone on the platter itself is biasing the result. This can be proven by dropping/removing another similar smart phone while the first one is measuring. What is more, dropping the needle on the record reduces speed by a few percent points too. For this reason, this device introduces errors on the result unless the motor is of a high torque, direct-drive design that is not affected by its weight and unbalanced placement on the platter.

Reads to be cool, would like to see the iOS update first though.

It is not without reason why, for example, Marc Gomez (SAT) decided on a direct drive for his XD 1. To achieve this, he had to solve many problems. He only made this decision to maximize the torque of the motor on the records with a vacuum suction. If this is done well, there are no problems with turntables of this type in fact, quite the opposite. I can't retrofit a direct drive on my turntable, but maximizing the power transmission has resulted in spectacular sonic improvements. My plastic belt also helped, but it is right, he transmits more Vibrations from the Motor. I will fix that later. But rubber belts also carry vibration, albeit much less. You put the tonearm on the end of a record, after the music and let the turntable go on. Then you turn the amplifier very loud. One will hear much noise. Then you switch off the turntable but let the system run until the platter stops rotating. The moment you switch off the motor, the humming stops immediately. It's easy to check. If you hear no noise, then you have an excellent turntable.

I'm gonna get one and track the data while a record is playing...lots of questions to answer!

Thanks for posting about it, now I want it!

this thing seems cumbersome as hell. I run vintage DD tables and they are deadly accurate! (I got them years ago in very good condition. Less than that can be a daunting task to fix, but can be done).
I will stick with my stand alone RPM meter and slide rule as those are much easier to me personally. I'd rather spend the $300 on a Wallytool.

It would be interesting to see if circumstances where there is an increase in friction between the stylus and record due to the dynamics and frequency of the sound can slow a turntable at all. If it can, maybe that has some relation to people finding that e.g. idler drive 'tables have particularly good "drive," subjectively.

Happy to learn about this. Since the Platterspeed tool I used to have on my iPad is no longer operational on iOs, I've missed the ability to check speed and have a clear visual representation of results for wow/flutter. While this new tool seems somewhat less appealing visually, being able to use it without a record and test signal makes it a little friendlier to use. Not sure how to overcome the recalibration problem if such is required ( I don't have another speed assured table to use as a benchmark) but I'd hope this was not needed or the company can provide some other way to achieve this.

Yes, RPM is essentially free but of the many set up parameters we can fuss with, platter speed is up there as super important and over the course of many years, a highly accurate tool that offers a little more might prove to be a reasonable price to pay.

Or for about $12 you could setup a hall sensor tachometer that measures speed while you listen to... um... albums?

eBay link to LED tachometer and hall sensor.

A super thin magnet for the slimmest clearance can be had for $.20 here.

Mine works great, did have to source a 12v wall wart from Goodwill for $1.99.

I have compared the RPM app with my Adjust+ program and find that there are differences. A speed measured at 33.33 with Adjust+ is measured at 33.2. For 45 there is a similar difference, as the RPM app gives a value of 44.8. Whether the RPM app generally provides an underestimation of speed is unclear, it may well have to do with my smartphone.

www.drywallatlanta.net loves this Portuguese-designed device that electronically measures turntable speed, calculates wow and flutter, jitter and can do so much more!

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