technics SP-25 armboard


I need to a adapt an Audioquest PT-5 tonearm to a Technics SP-25 turntable base. The round hole is pre-cut to 5 1/2" in diameter and 3/4" deep on the table base. I could buy the official, original armboard but it is designed especially for the EPA-500 tonearm assembly and would need to be adapted for the Audioquest arm. It might be cheaper to build one from scratch with all the correct measurements. Any suggestion will be appreciated.
sharpe

Showing 2 responses by pryso

Nandric, did you meant SP-15? I believe that and the SP-25 require the same cut out, thus fit into the same plinth. The SP-10 and SP-10 Mk 2 and Mk 3 have a different pattern, thus fit into a different plinth.

For the OP, it should not be difficult to fabricate a new armboard to drill for the PT-5. The main question may be should he utilize marine ply, solid hardwood, aluminum, acrylic, etc.?
Technics used the motor unit model number in identifying their dedicated plinths. From what I found on Vinyl Engine, there are four plinths for the SP-10 Mk2 --SH-10B, SH-10B3, SH-10B5, and SH-10B7. They differ in year of manufacturer, construction and mass.

The SP-15 motor unit had two plinth options -- SH-15B2 and SH-15B3.