Dimensions for Fitting Origin Live & Rega Arms
Armboards & Mounting Position
Hole Diameter: You can fit Origin Live arms to any deck but sometimes your armboard may need modification or changing to a new one - (contact a dealer or the turntable manufacturer for the second option). The tone arms require a singe hole in the armboard or plinth - from 23mm up to 25mm in diameter (23mm is ideal for accurate fit).
Armboard thickness: Once the arm is inserted through this hole, you secure it with a large nut under the armboard which clamps it in position. The armboard can be any thickness up to 25mm for this to work.
* You need not worry about VTA for Encounter arms and above as they have integral VTA adjustment.
* Arms below Encounter use VTA adjustment on the arm mounting thread itself so armboards need to be around 20mm or less to allow adjustment.
The distance from centre of arm hole to centre of platter spindle needs to be 222mm plus or minus 1mm. The arms can rotate to be clamped at any angle . The effective length of the arm from its mounting hole center to the cartridge end of the arm is 240mm. The arm protrusion from pivot point to the rear is 50mm to the end of the counterweight stub.
For Encounter arms and above - If the top of the armboard is around 24mm below the top of the platter then the arm will be at its lowest position for tracking a normal cartridge (17mm body height) and can be raised by a further 14mm
For 12 inch arms only - Centre of 23mm - 25mm diameter hole for arm mount to centre of platter spindle is 295.6mm plus or minus 1mm. The length of the arm from its mounting hole center to the cartridge end of the arm is 309mm. The overhang from pivot point at rear end is 50mm to the end of the counterweight stub.
Note: Cartridge alignment is at best only ever a compormise. A cartridge is only aligned at 2 points on the record - For the remainder of positions on the record it's out of alignment - We say this to save fretting over the last 0.5mm accuracy and give a bit of perspective. Alignment makes an audible difference but in the scale of other parameters it's really not a lot.
Fitting to the Linn LP12
If you have a Linn LP12 turntable with a Linn arm then the arm hole on your current armboard will be in the wrong position (Linn arms mount at a distance of 211mm from the platter spindle) . We can supply you with a Pre-drilled armboard for the Origin Live and Rega arms at £27 - this board is identical to the Linn armboard but is missing the Linn Logo. Alternatively you can get a blank arm-board from Linn and get it drilled. This is simple to fit.
On newer Linns the wooden corner brace has been increased in size which creates a slight foul with Standard size Origin Live and Rega arms. This is easy to rectify by removing a small semi-circle of the brace. Probably the quickest way to achieve this is to drill a series of 4mm holes as close as possible to one another in the shape of the cut out you need. Then finish off the job with a chisel.
After fitting a new arm you can find printable instructions for setting up your Linn at Linn Sondek LP12 turntable instructions
Fitting to an SME mount
If your arm has an SME nount there is an adaptor plate available on this website which bolts to your existing mount and provides the correct hole and position for mounting Origin Live arms – see Accessories > Vinyl > Adaptors
Modifying your current arm board
If you modify your current armboard you will need to cut a hole in the board to locate the arm at the dimensions given above. This will leave you with the old hole looking unsightly. To hide this, make up a large circular plate washer of black card, aluminium or other material and glue this to the armboard - the spacing washers we supply with a new arm have an outside diameter of 48mm and will normally fulfill this function for most situations (the thickness of the washer is 1.5mm or 4mm). The advantage of gluing the washer to the armboard is that it also locates the arm in the correct position.