Since no one has responded to Groovey's question re sonic interaction between 2 arms, I'll throw in my 2 cents. I have a Galibier Gavia which has mounting holes for 2 arms. I have a Moerch DP-6 mounted on a Galibier aluminum armboard that is securely bolted to the aluminum base. I have tried mounting other arms (VPI JMW-10 and AQ PT-6) using a wood armboard, and each time there has been an adverse effect on the sound from the Moerch arm. In other words, there must be some resonances in the wood armboard that are affecting the Moerch.
If I were serious about making the second arm option work, I would invest in aluminum armboards for the other arms, and see if that solved the interaction problem. I guess I'm not that serious though. Whenever I have had both arms set up, I have tended to use just one. Maybe if I had a mono cartridge, I would use the second arm more. For now, I have decided it makes more sense just to have a single arm with a stereo cartridge set up to bring out its best.
Enjoy!
Dave
If I were serious about making the second arm option work, I would invest in aluminum armboards for the other arms, and see if that solved the interaction problem. I guess I'm not that serious though. Whenever I have had both arms set up, I have tended to use just one. Maybe if I had a mono cartridge, I would use the second arm more. For now, I have decided it makes more sense just to have a single arm with a stereo cartridge set up to bring out its best.
Enjoy!
Dave