Choose Keel – Linn’s integrated sub-chassis, armboard and tonearm collar – to give your turntable a significant leap in performance, helping to retrieve even more music from your vinyl records.
The Linn Keel sub-chassis upgrade is an ultra-high quality machined, single piece aluminium unit that replaces both the steel Linn Cirkus sub-chassis and the armboard, taking rigidity between bearing and arm to new levels.
Consequently, the lossy interface between the steel sub-chassis and the armboard, formerly achieved with three self tapping screws, is removed. This connection between the steel sub-chassis and the original main bearing was essential in the days before the Linn Cirkus bearing, as it acted as a filter limiting transmission of unwanted vibration and noise passing from the main bearing into the arm and cartridge. This is why, when unknowing enthusiasts replaced these small screws and the job that they were doing with larger ones, or worse still, with bolts through the sub-chassis and arm board making the connection more solid, the effect was to degrade sound quality. This is due to the increased transmission of the noise that was being produced in the original design. So, you can see that use of the Linn Keel sub-chassis is only possible because of the improvements that were made with the Linn Cirkus bearing.
Every design aspect of the Linn Keel affects its overall sound quality. Features such as the detail in the webbing on its underside, to the three raised areas beneath the main bearing (lands) so as to ensure a consistent contact area between it and the main bearing, all come together to create dramatic sonic improvements. This, combined with the integrated arm collar, thus eliminating the need to bolt one onto the sub-chassis with the small but consequential loss of integrity, means that the Linn Keel is a leading piece of audiophile engineering and design for the Linn Sondek LP12. The Keel for Linn arms is a complete and very well thought out solution, which allows so much more information retrieval from your record collection.