CONSTRUCTION NOTES
Instructions for fitting a pick-up arm to your TT2
DISCONNECT FROM THE MAINS SUPPLY BEFORE REMOVING THE BASE PLATE
2.1 The TT2 is available fitted with arm boards pre-cut for most popular arms. If you wish to cut your own. arm board for a
specific application, blank boards are available from your retailer. When a pick-up arm is mounted on the arm board, the arm must
be securely fastened to the board. Methods of decoupling the arm from the board, such as rubber grommets and washers, should
not be used as the TT2's suspended chassis will remove any feedback problems. Be certain to tighten all mounting screws or nuts
as tightly as possible. The am board is secured to the subchassis using a 4mm bolt and nut located on the underside of the
subchassis. This nut should be tightened fully after fitting the arm and arm cable as described below.
2.2 After securing the arm and arm board, it is important that the arm cable should be carefully and securely positioned so as
not to affect the operation of the subchassis. The arm cable enters the plinth via either of the two slots cut in the rear of the plinth.
The slot should be chosen which allows the cable to form a loop extending to the crossbar of the subchassis and back to the arm.
The cable should be dressed so that this loop is slack between the subchassis and the plinth, but not so slack that it touches either
the plinth or the base plate along its length. The arm cable is secured by two 'P clips, one at the entry to the plinth, and one at the
point where the arm board mounting screw projects through the subchassis. Two sizes of ‘p' clip are supplied for use with
different arm cable thicknesses at the plinth entry point. Feed the arm cables through the plinth entry ‘p' clip and screw the M4
bolt down onto the washer, but do not tighten yet. Insert a screwdriver through the elongated hole in the ‘p' clip, and use it as a
lever to tighten the clip onto the cable so that the latter is squeezed tightly. In this position tighten down the bolt using the Allen
key supplied. It should not be possible to pull the arm cable through the 'p' clip when the latter is correctly tightened. Use one of
the smaller clips at the armboard/subchassis securing bolt. The arm should be earthed to the subchassis earth as shown - if
necessary use a short piece of lead soldered to the arm earth cable.
2.3 The springing of the subchassis is factory pre-set and should remain stable for most pick-up arms. The arm cable has the
most affect on the springing, and should be dressed so that the arm board does not touch the sides of the plinth at any
point. This may be checked after fitting the platter and adjusting the suspension height - see 2.4 and 2.5. If you are not
satisfied with the operation of the suspension repeat instruction 2.2 and adjust the arm cable position until the subchassis
is springing freely.
Note that each spring has a line painted on it which should match with a red pointer on the subchassis. NEVER TRY TO TWIST
THE SPRINGS IN SITU OR THE UPPER SPRING SEATS WILL BE DAMAGED. If the springs need to be moved, tape the
sub-platter securely in place and turn the whole plinth assembly upside sown supporting the edges of the plinth either on books or
in a suitable assembly jig.
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