Discuss The Viv Lab Rigid Arm

Yes, everyone knows what you think. Does your disdain apply to the very idea of an underhung tonearm or only to the Viv Float, which is a bit eccentric in other ways?  I wish someone would market an underhung tonearm that is otherwise conventional.  The only one I know of requires you to buy the Yamaha GT5000 turntable, complete with its underhung tonearm.  If Yamaha were to market that arm as a separate entity, I would be interested.  And I am also interested in the Viv.

I actually don’t think you could mount a cartridge on a paper straw, whether the straw was overhung or underhung.

@intactaudio I did try the Sperling underhung, but I could only get it underhung by around 8mm. That way it did distort on the last track of some records. I'll try it on another turntable where I can get it to 15-20mm.

@maxson 

The less the underhang the closer the single null point will be to the runout groove.  It is also important to pay attention to the cartridge zenith since a slight offset of the Zenith from 0° will have the same net effect as a slight change in the underhang.

dave

I’m always suspicious of absolutist commentary and expressed opinions about what is the “correct” approach to any audio related topic when after continuous inflexible opinions, the opinions are not accompanied by some reference (if only vague) to how the music sounds when reproduced by the piece in question. Something….anything that relates, not to a staunchly held view of what is technically “correct”, but to how the actual sound of the music is impacted.  There’s a lot more to the sound besides obvious mistracking distortion.

Dear @intactaudio : Here are your main posts to me in even you talk about calculation where what I posted were all about LÖfgren A alignment calculations.

 

It’s really weird that in no other of your posts but only in the last one mentioned about " null points in LP surface existence ". Read carefully your first post to me with that Whaaa. From there came all other posts between you and me:

 

"

@rauliruegas

Null points calculation it not depends of any other parameter, not even tonearm EL.

Whaaaa???

you need to specify at least four parameters which typically are alignment type, inner groove diameter, outer groove And Pivot to spindle (P2S). The math then returns you two null points, effective length (EL) and offset angle. The overhang (OH) is then found by subtracting P2S from EL. The knowns and unknowns can be reworked based on the information available. Effective length can be substituted with a known overhang and the P2S returned.

dave "

 

""

Without overhang which requires an effective length to calculate the two null points cannot exist.

dave ""

 

""

I doubt Løfgren would suggest it possible to get two null points without the addition of overhang no matter how much you point him to his math.

dave """

 

What is all about?

 

Don’t you think that your last post should been the first one?:

 

"" those null points on a record surface and being able to trace through to them with a cartridge.....to get existence ""

 

Instead that you followed talking of calculations/math as me.

 

That’s is my stupidity.

 

R.