Armboards & Mounting Position
You can fit Origin Live arms to any deck but sometimes your armboard may need to be modified. The tonearms require a singe hole in the armboard or plinth – from 23mm up to 25mm in diameter (23mm is ideal for accurate fit).
If your armboard needs to be replaced, please contact your dealer or manufacturer.
Once the arm is inserted through this hole, secure it with a large nut under the armboard which clamps it in position. The armboard can be any thickness up to 25mm.
- 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″ arms
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 centre 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 compromise. A cartridge is only aligned at 2 points on the record. For the remainder of positions on the record it is 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.
Modifying Your Current Armboard
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 fulfil 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.
Rega Arm Mounts
Our arms are a drop in replacement for any vintage of Rega arm whether the later 3 point or older single hole mount. This means there are no worries about dimensions, heights, fitting hole sizes or anything else. This statement also applies to Rega Arm, OEM derivetives (Arms made by Rega but badged by another manufacturer).