LP12 vibration!!!!!

Posted by: Gurbinder on 17 December 2016

I got my new LP12 home today and love it, one small problem not so bad but annoying I have a very slight needle jump when walking nearby or at a particular part of my room.

I have spoken to my dealer who as always is very helpful and they have suggested a wall bracket, I know the benefits of this but don't want to fit one to my wall, my question is will a 2 inch thick slab of granite under the complete length on my rack help????

 

regards

Posted on: 17 December 2016 by Roadie Simon

What is your floor? I'm guessing it's suspended.

 

Posted on: 17 December 2016 by ChrisSU

I doubt it will help very much. If you have a springy suspended floor, there's not much you can do other than stiffen it up with joist reinforcement, or maybe move the rack to a different (adjacent?) wall where there may be less movement.

I'm not a fan of wall shelves either, but probably a better solution. Then again, a flimsy stud wall may not be too good either, especially if it sits on the same springy floor.

Posted on: 17 December 2016 by Gurbinder

My living room is in the 1st floor so suspended floor.

Posted on: 17 December 2016 by Roadie Simon

As CHRISSU says...Granite slab probably won't help much. Wall shelf is best option especially if on structural wall rather than stud

Posted on: 17 December 2016 by The Strat (Fender)

I know of more than a few Linn owners and have never heard of this problem.  

Regards,

Lindsay

Posted on: 17 December 2016 by Tony2011

Agree with others here. You may not like the idea but the best "cure" for your problem is a wall shelf! 

Posted on: 17 December 2016 by DavidDever

It's probably worth having your retailer out to take a look - tonearm setup (including counterweight selection vs. cartridge weight) may also be the culprit.

Posted on: 17 December 2016 by Clive B

You don't say which level LP12 you have, but does it have the Trampolin base? If not, that might help, although the best solution for sure would be a wall shelf. Many LP12 owners are enjoying significant benefits with the Tiger Paw Vulkan wall shelf which is a tremendous bargain. If I didn't have a dry lined wall behind my system, I'd definitely go for one.

Posted on: 17 December 2016 by ianrobertm

Given the reported problem, a Wall Shelf is the best potential solution, here. But - it needs to be on a sturdy solid wall. A slab will not help, IMO. 

Given the design of the LP12, with a suspended sub-chassis, it simply won't work well on a bouncy floor.....

Posted on: 17 December 2016 by Gurbinder

It has a trampoline 2 fitted

Posted on: 17 December 2016 by The Strat (Fender)

I 2nd the view that the dealer should come and take a look before wall shelves or anything else are considered.  A work colleague has a  Linn on a suspended floor in old house in St Albans and it works fine. 

Posted on: 17 December 2016 by arch7

Do you have a basement under the floor? You could add a screw-jack between the underside of the first floor and the basement floor. In other words stiffen the floor from underneath. All your kit will benefit.

Posted on: 17 December 2016 by Adam Zielinski

Most odd - I would look at the LP12's set up first. Trampolin should give you good isolation from the vibrations. Your floor would have to be very woblby for vibations to go though the floor, rack, Tampolin and into the arm.... Sounds very unlikely.

Posted on: 17 December 2016 by Pev

Same problem here - I've stuffed the rack in a corner out of the way and step lightly when I change the record. The LP12 has lasted through 3 house moves and has always been susceptible to footfall. In previous locations I've put it on a bookshelf supported by a discreet sub frame and that worked well without noticeably affecting the sound.

Posted on: 17 December 2016 by Roadie Simon

When I first got my LP12 we lived in a first floor flat. didn't have a problem with it on a rack. that's about 25 years ago so no tramp!!

As others have said...worth getting it checked

Posted on: 17 December 2016 by oldrock

I would have thought that you might need to look at the tone arm and counterweight first of all. My Lp 12 is on a suspended 1st floor too and you can see it tremble slightly when people walk through the room, etc. But, its never skipped or jumped.

If the wall adjacent to your stand is a solid one or a stud wall, then if the tone arm, etc is correct then I would consider fitting sturdy angle brackets right at the base of the wall and mount a plinth on that. OK, your kit might be a few inches higher off the floor but cannot then be susceptible to movement and you could always build a little vertical frame to sit just a few mil taller than the plinth so as to hide the gap but not be actually touching the new plinth. Or, do the same thing, if a solid wall by using stainless out steel pins/rods coming out of the wall, fixed in with structural adhesive and place the plinth on top of the pins. Obviously, if the rest of the system is also on the plinth then more substantial rods would be required to cope with the weight.

Posted on: 17 December 2016 by Solid Air

One option, if the wall the hi if is backed against is the same one the joists attach to, is to position the hi if directly over a joist rather than in between them. That should reduce the springiness.

Failing that, assuming the deck is set up right and you don't want a bracket, you'll have to do something structural - put in a new joist and/or replace the floorboards under the hi if with less-flexible wood.

Posted on: 17 December 2016 by ChrisSU

It used to amaze me how my pre-Trampolin LP12, on a very bouncy floor, never jumped, where my previous Michell turntable was all over the place. In a later house with a solid floor, my cat liked to sleep on it (fortunately that was back when they gave you a lid!) and he used to jump from the floor the the turntable, curl up and go to sleep. The LP12 never missed a beat. So yes, maybe get yours checked by a dealer. 

Posted on: 17 December 2016 by Gurbinder

If it is not an arm issue then this turntable is not for me as I really don't want a bracket/shelf fitted to the wall.

Posted on: 17 December 2016 by Tony2011

Why don't you get a dog instead of an LP12? Probably easier to look after.

Question of priorities.

I have an LP 12 on a wall shelf. I got rid of the dog!

Posted on: 17 December 2016 by Solid Air

It would be a shame to get rid of such a lovely thing as an LP12. If the dealer can't fix the set-up - ie it is the suspended floorboards causing the problem - the key is to support your hifi on something other than the springy part of the floorboards. If it's not the wall, it has to be the joists.

Option 1: Move the hifi rack to be directly over a joist (ie where the joist runs under the floorboards). 

Option 2: Your idea of granite might work if it can be placed so it rests on the joists (ie where the floorboards meet the joists) at either end, thereby isolating it from the springy floorboards. Then rest the hifi on that.

Option 3: Get a big slab of wood (or bamboo) and use long screws to attach it to the joists through the floorboards. Then rest the hifi on that.

Posted on: 18 December 2016 by Ravenswood10

The floors in our old cottage didn't do my LP12 any favours at all so I  moved to a wall shelf a while back recently moving to a Quadraspire SVT bamboo shelf with added Naim cups, balls and glass. Works a treat and looks less agricultural than some wall mounts.

Posted on: 18 December 2016 by BigH47

My LP12 has been on a wall shelf all it's assembled life, so if there are any audio problems with a wall shelf vs any other way I wouldn't know so I don't worry about it. It doesn't jump and small persons can't gat to it either.

Recent small addition to family is far more interested in the SBLs.

Posted on: 19 December 2016 by Christopher_M
Gurbinder posted:

If it is not an arm issue then this turntable is not for me as I really don't want a bracket/shelf fitted to the wall.

Is any?

C.

Posted on: 19 December 2016 by bluedog
The Strat (Fender) posted:

I know of more than a few Linn owners and have never heard of this problem.  

Regards,

Lindsay

It's very common when using standpoints in rooms with suspended floors. When I moved to my present house I had to abandon my Audiotech table and fit a wall shelf; not very pretty but the sound difference is enormous, not just in terms of needle jump but in the sound quality and definition in general.