Click title to read one, or click date to read all below it.
02-16-10
In the interest of full disclosure, i own a souther, which i ... Samujohn
02-16-10
I have had liner tracking arms in the past, starting with th ... Stanwal
02-17-10
I would say linear arms separate the 'set and play' crowd fr ... Elizabeth
02-17-10
Both linear track and pivot arms have their advantages, just ... Albertporter
02-17-10
I swapped out a linn lp12 for the mitsubishi lt-30 i current ... Mt10425
02-17-10
Have had both too. i used a souther for quite some time, the ... Bostonaudi
02-17-10
Mepearson, linear trackers are specifically designed to add ... Larryi
02-17-10
Well, as far as the "twiddle" factor, once my et 2 ... Mepearson
02-17-10
Dear mepearson: it is obvious that you start the thread to t ... Rauliruegas
02-17-10
Depends. as you mentioned they are fussy, and require worki ... Buconero117
02-17-10
Mepearson-now that raul, audiophile's audiophile has deemed ... Mt10425
02-17-10
Dear mt10425: please don't take my post in the way you take ... Rauliruegas
02-17-10
..... no Syntax
02-17-10
I currently use an maplenoll apollo with its linear tracking ... Oilmanmojo
02-17-10
Well raul, i didn't mean to get your dander up. i certainly ... Mepearson
02-17-10
I own both a unipivot and linear air-bearing tonearm - scheu ... Darkmoebius
02-17-10
In 1980 i met lou souther when i was living in boston and in ... 213cobra
02-17-10
Phil, your post was probably the best post i have ever ... Baranyi
02-18-10
Wow phil, thanks for the great ride through a specific point ... Darkmoebius
02-18-10
Happy to post some history and perspective, bob. now, if thi ... 213cobra
02-18-10
unfortunately, it's just left me wanting to hear more! well ... 213cobra
02-18-10
Dear phil, what an beautiful 'holistic story': persistence, ... Nandric
02-18-10
Thanks phil, my souther has been a stable, unfussy (after a ... Samujohn
02-18-10: Atmasphere
I have owned several linear tracking arms.
Air bearings don't work. I am sure all of you have noticed that the more pressure you put in the arm, the better it sounds. The problem is that there is a violation of a fundamental turntable design rule, which is this: for proper LP playback, there can be no bearing slop between the surface of the platter and the cantilever of the cartridge.
Air bearings by definition have bearing slop, and this is why they sound better as you add more pressure.
The other problem, already mentioned, is that due to the excessive lateral tracking mass, it is the cantilever of the cartridge that defines the tracking error **not the arm**! This is because the cantilever has to flex to move all that mass.
The result is that a good quality arm like a Triplanar or Phantom has lower tracking error than any air-bearing arm!
In order for a straight-tracker to actually do its job right, it cannot have any slop in any of its bearings. Linear tracks do exist that have no slop, so it would not be that hard to devise an arm that also has no slop, using a servo not unlike what the old Rabcos used (updated of course). Arms like that don't exist right now so for the time being, radial tracking arms rule the State of the Art roost.
Atmasphere (Threads | Answers | This Thread)
02-18-10
Ralph, i suspect some of us currently using the walker audio ... Rushton
02-18-10
"air bearings don't work" is quite a generalizatio ... Dgarretson
02-18-10
Bravo phil! what a well written post. Semi
02-18-10
Geez ralph, i didn't know my et-2 couldn't work. of course ... Mepearson
02-18-10
Aaaah, to be able to afford a high quality table with two to ... Darkmoebius
02-18-10
Well, et-2 arms are fairly cheap when they come up for sale. ... Mepearson
02-18-10
Phil,i would love to hear about julius futterman. at one po ... Baranyi
02-19-10
Atmasphere wrote a very good - and true - comment. that's th ... Syntax
02-19-10
I own both types, the rockport sirius iii linear tracking ar ... Mikelavigne
02-19-10
"make sure you use a surge tank with it and an air filt ... Lewm
02-19-10
Hey 213 cobra (phil), i too was a friend and customer of jul ... Lewm
02-19-10
Syntax, i have no idea what you mean when you say linear tra ... Mepearson
02-19-10
Dear friends: imho trying to achieve a precise conclusion of ... Rauliruegas
02-17-10
In 1980 i met lou souther when i was living in boston and in ... 213cobra
02-19-10
Well raul, i own a system that "can play clean in that ... Mepearson
02-19-10
Dear mepearson: +++++ " linear arm is incapable of rea ... Rauliruegas
02-20-10
I have owned air tangent 2b, 10b and reference, et 2.5 mod. ... Dertonarm
02-20-10
Dertonarm-thank you for your very well-reasoned response. y ... Mepearson
02-21-10
Mark, i would just give the triplanar, davinci, new ortofon ... Dertonarm
02-21-10
Also look into the basis vector arm. a. j. conti use to dist ... Jwm
02-21-10
Dear mepearson: this " humble " audio technica 10& ... Rauliruegas
02-21-10
How about the dynavector dv-507 mkii? how does that, and it' ... Darkmoebius
02-21-10
02-19-10: mepearson well raul, i own a system that "c ... Darkmoebius
02-21-10
Dear darkmoebius: agree with you. there i'm talking more on ... Rauliruegas
02-21-10
Agreed, raul. but clean reproduction of the fundamental note ... Darkmoebius
02-21-10
Well darkmo, i have a purpose-built dedicated audio room. m ... Mepearson
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