Tone arm length

@billstevenson

Interesting and thank you for sharing the insight. By any chance did you ever hop on the ferry over to Victoria and if so, did you visit Sound Hounds?   

Interested in selling one of those scopes???

btw I've bought the TT with the 12" so that's that.

My wife and I enjoy Victoria very much and try to visit there every chance we can.  Perhaps our favorite city.  I will try to visit Sound Hounds next trip.  I am quite sure you will enjoy your new set up.

I almost forgot about the microscope.  We are summering at our home in New Hampshire.  The microscopes are both at our winter home in Florida.  If you are really interested send me a private note and when we get back in late September or thereabouts I'll send you photos and we'll take it from there.

@billstevenson

Nice! Thanks Bill, will do.

I lived on the island from 1971 to 1992. My first visit to sound hounds was around 1980 .It was a bit dingy - geeky back then but super cool. Had all the MAC stuff including their first CD player. Looks like it's had a refresh but still in business AND in the same location which is amazing.

Hi Mac,

The shorter arm is ALWAYS going to be better for several reasons which always are going to be more significant than any benefit from marginal improvement in tracking error. The shorter arm is stiffer. It takes more energy to get it to resonate or looking at it from the other direction it is better at holding the cartridge still. The shorter arm has a lower moment of inertia. It follows the record more effortlessly interfering less with the cartridge. The shorter arm has a lower effective mass allowing it to work perfectly with more cartridges. You can always add more mass if you need it, but it can be very difficult to remove mass. 
 

Some very respected turntable manufacturers like Basis and Sota do not even give you a choice. Many very smart engineers look at 12 inch arms as being foolish. If they make them at all it is only to satisfy customer demand so as not to lose business.