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Equipment Set-up Recommendations?

Hi Folks:
I recently installed an air-bearing linear tracking tonearm (the MG-1). Table and cartridge are Teres 255 and ZYX Airy 3x-sb low output. Generally, I'm thrilled with the setup, but I find that when I walk around the room, the cartridge can jump, which is very disconcerting.

When I switch to the OL Silver arm I have, such jumping does not seem to occur, so I'm guessing the MG-1 is more sensitive. All my equipment is supported with the double rack, which may also be a variable to consider - I have my Teres on top - about 40 inches above the ground.

Anyway, I'd welcome any input or insight that migth provide me with a more stable, isolated listening environment where my cartridge won't jump (how bad is that for the cartridge anyway - should that be considered an emergency, or is it pretty common/not-a-big-deal? I've inquired about getting a Gingko platform, which may or may not help. Ideally, I'd like to keep the Teres on top of the rack, as it looks great, is highly accessible, and I don't want to take up more realestate with a seperate Teres stand, if I don't have to.

Anyway, any input and advice would be much appreciated. Thanks in advance!

John.
128x128outlier

Showing 8 responses by gregadd

gregadd
574 posts
 
dr. it hurts when i do this. dr. don't do that.
wall mount.
gregadd
574 posts
 
Outlier, hope you appreciated my dry wit. If wall mount is not your thing. try this. If your floor bounces you can laod up the mass so the floor is "locked at the bottom of its' bounce" ( a stand made of bricks worked).I mount my turntable in the corner of a room where there is minimal foot traffic. mounting it in the corner gives the floor support on two sides. the closer you are to the middle of the room the more the floor bounces. This is why I beleive in turntables with a suspension.
gregadd
574 posts
 
Oz that is true if the turntable is is put in a corner in the direct line of the loudspeakers. I guess it was not clear, I suggested a different room. Mine is located around the corner behind the speakers.I guess that causes problems too. Like long cable runs and makes adjusting vta even more of bitch. I guess that's why this hobby is so much fun.
gregadd
574 posts
 
Outlier- concrete blocks? Not sure they are heavy enough. You can try it. You can usually scavenge some bricks from leftovers at construction sites. They look better too. If you have space you can add mass to the rack. This is what most people do without even realizng it. You can use bags of lead shot. Cast iron weight plates are also useful. You know the ones weight lifters use on the end of a barbell. Smaller ones can be placed over the tansformers of your equipment to suck up stray magnetic fields.
gregadd
574 posts
 
TWL - yes my sota suspension bounced but the arm and platter all moves as one allowing the record to play without interruption.
Sean- that was not my experience. In fact the sound improved.
gregadd
574 posts
 
OZ"curiosity killed the cat" what problems come from mounting a turntable in the corner? IYHO of course.
(from the Wizard of Oz not the cable prison show, right?
gregadd
574 posts
 
Loyd is only part right. the tt is moving in two planes both horizontal and vertical. Consider two vectors forming a 90 dgree angle. the resulting vector is 45 dgrees causing the rack to lean. In the case of foot falls as your weight is applied to the floor it sags toward the middle because it is anchored in both the vertcial and horizontal plane. anchoring it to the wall would only eliminate horizontal motion. Unless of course you have created what is essetially a wall mount by making a wall anchor strong enough to restrict the motion in both planes.

No engineers were killed in making this explanation.
gregadd
574 posts
 
http://forum.audiogon.com/cgi-bin/fr.pl?vevol&1007012846
for a corner mount look at this installation by fellow audiogoner BWHITE
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