help with 552

Posted by: neil w on 29 February 2004

my 552 sits in a 5 level rack of fraim on a suspended wooden floor,over the last few days whenever anyone walks past it even upto 3feet away i am getting what i can only describe as a windchime noise coming from inside the case.
i think i have an internal suspension problem ,any one else with a 552 experienced this noise

thanx
neil

Posted on: 29 February 2004 by Hermann

Hi neil,

my 552 suffers from the same problem and I'm waiting for resolving it (too long). Your dealer should have a view insite your 552. It seems the springs cause the noise.

Hermann

Posted on: 29 February 2004 by sean

Neil,

I have not experienced this with my 552 and it sits on two levels of fraim.

Sean.

Posted on: 29 February 2004 by neil w

mark
ok then youve twisted my arm

sean

lucky b*******

hermann

how are they going to resolve it ?

thanx neil

Posted on: 29 February 2004 by Hermann

Dont know but was told by the dealer that the pre has to be opened. He also mentioned that the pre should sound better without this noise.

Hermann

Posted on: 29 February 2004 by Stevea

quote:
Originally posted by sean:
Neil,

I have not experienced this with my 552 and it sits on two levels of fraim.

Sean.

This may be part of the answer. On a wooden floor it is possible that the movement being experienced is a rocking or tilting motion. If this is so then the higher the unit is off the floor the more lateral travel it will have to absorb during this movement.

Therefore two suggestions:
1/ Try positioning the unit a bit lower in the rack. This may induce other issues but may let you get a handle on what is happening.
2/ See if you can beg/steel/borrow some roller bearing isolaters. These will very effectively isolate your kit from lateral movements (but do nothing for vertical movement). I have experimented with different designs of these for the last 6-8 months under various kit (including a TT - spooky) and the benefit was more pronounced with the front end. I don't know whether they will have any negative effects under the internally sprung kit but if you can try a set you can let me know.

Steve