TSB-25AXZ3 Side-Address Shock Isolated Saddle for BM-700 / BM-800

thingiverse

This is a combination saddle and post for mounting a Transound TSB-25AXZ3 capsule in a generic Chinese microphone body (BM-700 / BM-800) for side-address use. It should print fine without additional support on most printers. The mounting holes align perfectly with the holes in any of the BM-700 and BM-800 derivative microphones. However, some of these microphones only have two of the four holes tapped in their upper plates. The holes are tapped to take M2.5 screws. This will work with just two screws, but if you decide to fully populate the mounting screws, be aware that you may need to purchase a tap and handle to finish the job. The mounting holes are designed to accommodate shock isolating grommets used for RC servos. Du-Bro #115 "Natural Rubber Grommets for Small Servos" or equivalent work perfectly well. The stock screws that come with the donor mic will likely be too short to use with this mount due to the additional thickness of the grommets. I used M2.5x6mm screws with M2.5 washers to mount mine, which is the shortest screw I would consider using. For this mount, the wires run down a hole through the middle of the post. The hole is 3mm in diameter, so there's not much room for wires. But you shouldn't need more than 3mm to get the job done. Neumann uses the equivalent of 30ga wire on their mics. I used 28ga and still had some room to wiggle around. The thinner and floppier the wire, the less microphonic coupling you'll experience through the capsule wires. Attach the capsule to the saddle using an adhesive like E6000.