The SL-1000 (SP-10 mounted in the "obsidian" plinth) was designed for the Technics professional tonearms, with mounting distances of 235mm. I have mounted shorter arms on these decks, with varying degrees of success. Frankly, it just looks odd to me. My advice would be to either hunt up a longer tonearm or mount the SP-10 in a custom plinth.
installing the SME V tonearm in the Technics SP10
I want to install an SME V tonearm into the Obsidian base for the Technics SP10 Mk II turntable. Does anyone have the template to route the armboards for the Technics base? I have several armboards, some drilled and some blank. Thanks for any assistance offered.