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Just wondering if anyone has tried the Phoenix Engineering Roadrunner and Eagle PSU (25w version) with a Thorens TD-124. I'm very tempted to buy a set for my 124, but I want to make sure it's going to work first.
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Idlers also have the problem that they consume about 15 watts of power as opposed to the 2-5 watts of the belt drive. It is a continuous draw and can just burn up the device if you are not careful. Ask them about a steady state draw of 14 to 18 watts and see if it will work. There are a number of horror stories on the net of people burning up 50 watt amps driving idlers in this way with a sine generator.
Remember the TD124 has not a synchronous motor but a induction motor speed depents from load, voltage,frequency ! All the modern belt drives have synchronous motors were speed is regulated by frequency !
Wait, so you're saying this won't work with it? That would truly suck, big time. Hence the reason I started this thread.
Edits: 05/26/16
I 'm not sure of its going to work with a 124 . Sure it drive the motor 25 watt is enough but if the feedback loop works and give a better speed stability then lets say a good other motordrive ? Like to do some measurements first before deciding to buy this .
When a record is cut, is it cut at 33 1/3 rpm?
Most records are stamped. ;-)
I thought that was only when you mailed them. ;^)
Dave
Well I just took the plunge. I'll let everyone know if it works.
Use one with my TD-150. I use the KAB speed strobe to set the speed at 33.3. Then, for the first few weeks, I used the strobe weekly to check if speed still spot on. I've never had to adjust since the first month.
I could actually use the Roadrunner with my Thorens but haven't found the need.
Opus 33 1/3
Makes sense. The Eagle is the key. The Roadrunner is window dressing.
-Wendell
I guess it depends on how you look at it. You still need to measure platter speed whether you use a strobe or whether you use a RoadRunner. I find the RoadRunner very convenient and exceptionally accurate. It allows me to monitor platter speed while playing a record by observing actual platter rpm. I think it's a revolutionary product and I can't believe it took so long for someone to come out with a digital tachometer for turntables. When you combine that with its reasonable price, it's a no-brainer as far as I'm concerned.
Best regards,
John Elison
The Eagle is a no brainer. The Roadrunner is a nice to have but not essential. IMO, of course. :-)
-Wendell
Edits: 05/25/16
Used a free iOS app to fine tune . Don't need two displays indicating 33.3. :)
is still a worthwhile addition. I've not had to adjust my Eagle in months although I do check speed regularly. The KAB strobe is a helluva bargain.
Opus 33 1/3
The magnet for the roadrunner normally attaches to the underside of the platter, which doesn't look like an option for the 124. It might be possible to put the magnet on the bottom edge of the side of the platter and then set the sensor sideways to read the magnet.
I would definitely contact Phoenix Engineering about this.
Would you need the Eagle (vs the Falcon) because the Thorens requires a lot of torque?
There is definitely space under the platter. I just spoke with Phoenix and they shared a picture with me showing that the magnet was placed on the bottom of the vertical ring of the heavy main platter.
I just want to know if anyone who used it noticed an improvement in sound and speed stability.
I reviewed the Roadrunner/Eagle here:
http://www.audioasylum.com/reviews/Power-Conditioner-Surge-Protector/Phoenix-Engineering/Eagle-Roadrunner/vinyl/112/1122757.html
Yes they make a noticeable difference on my Prime. I can't speak for other turntables or any of the myriad of additional variables that could affect your outcome. Last night I unplugged them for a different reason and the comments in my review were re-confirmed.
Bill
.
"If people don't want to come, nothing will stop them" - Sol Hurok
Yes, you certainly can use the Eagle alone, but....the combination of the Eagle and Roadrunner provides continuous adjustment of the speed of the platter once each rotation.
In other words, the speed is more stable.
I could immediately hear a more cohesive sound, better pitch and tone definition with the combination on my modified Lenco.
Tried the Falcon (less powerful unit) with my VPI, then added the Roadrunner to it...again, an improvement as above.
The Roadrunner is not just window-dressing, although there is no reason you can not use if for that.
I installed a Phoenix Eagle and Roadrunner to my VPI Super Scoutmaster with rim drive, which replaced the SDS. The Eagle/Roadrunner combo definitely stabilized the speed to a much more accurate and consistent level, within 33.333 +/- .003 after warmup, which has improved sound and musical flow. Much better PRAT, cohesiveness, sounding more like a master tape.
I misunderstood, but your OP did say that you wanted to "make sure it was going to work", which made me wonder if the thorens platter had room to put the magnet underneath.
I'm using both the roadrunner and the eagle with my VPI Prime, and I cannot hear an improvement in pitch stability, but the roadrunner readout clearly shows that the Prime motor is a little fast, and is closer to the ideal 33.33333... (45.000....) speed. I just don't HEAR the improvement. Some people say they do.
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