Fitting your Tonearm
The RB330 will directly replace any other Rega tonearm
that currently uses the 3 point mounting without any
modification. If fitting to another manufacturers
product or an older Rega turntable (with the single
point nut fixing), the supplied template should be used
as a guide to ensure correct position and alignment.
With so many variants in turntable models it is important
to contact your turntable manufacturer if in any doubt
before making any holes in plinths or arm boards.
Before attempting to fit the RB330 arm to the turntable,
it is important to ensure that there is sufficient
clearance beneath the turntable and that the arm
does not hit the lid, top or sides. Having checked that
there is sufficient clearance in all directions (including
the maximum potential arm movement horizontal and
vertical) the next step is to find the position of the
centre of the arm mounting hole. The easiest way to do
this will be to use the arm mounting template supplied.
Arm mounting template guide
The supplied template is for mounting Rega three point
fixing arms to other manufacturers turntables. N.B
protractor for cartridge alignment is also printed on
the same template.
1. The template should be kept flat and not bent. The
distance between the centre of the spindle and the
centre of the arm hole is critical and must be 222mm.
This template will help you check your positioning
before you attempt fitting and drilling.
3. Position the other end of the template so that the
clearance arc is within the rear and side edges of the
turntable base (and the lid when closed). Also check
that there is at least 250mm clearance from the centre
of the hole to the inside front of the turntable.
4. Use a long pointed probe such as a needle and
push it through the
‘
arm hole centre
’
on the template.
Keep the needle perpendicular to the template and
mark the position of centre on the turntable.
5. Having marked the centre, check again that if the
arm is placed in this position it will clear the under side
of the turntable and the lid. Also, check that the arm is
in a satisfactory position to ensure easy operation and
that the position is pleasing aesthetically. When you are
certain that the arm hole centre is in its correct position
(exactly 222mm from the record centre), you can drill
the required arm hole.
6. The arm mounting pillar requires a diameter of 25mm
which will provide adequate clearance for accurate
fitting. You can then drill the three screw mounting
holes as illustrated on the template. Make sure the arm
is straight and the holes are correctly aligned before
drilling.
7. With the holes drilled, you are now ready to fit the
arm to the turntable. Ensure that you also follow the
turntable manufacturer
’
s instructions regarding arm
fitting. Each individual turntable manufacturer may
have different requirements regarding positioning of
the arm signal lead.
RB
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