k brown
Well-known member
These BM-700 style mics being sold on Amazon show a completely different capsule than the usual TSB-160a (or copy thereof). It's no hype - I bought a pair and the larger capsules are not just much better, but with cleaned-up electronics, and the top end cut back a bit on the mixer, they compare VERY favorably with my Oktava 319 and AT3035.
These capsules bear a passing resemblance to the TSB-2555, but have a narrower front rim and a different hole pattern on the back. The exposed diaphragm area is about the same as the 3035. To check the noise of the capsule itself, I hooked it up to a 2SK660 and known quiet biasing circuit, and they are very quiet.
Since the capsule has a built-in fine mesh, I removed the inner mesh from the front half of the head basket; no noticeable hum. By plugging one of the rear vent holes, the sound at 180 degrees was less 'scooped'.
Someone is selling on e-bay capsules that appear to be the same; I haven't received it yet so can't confirm if it is.
These capsules bear a passing resemblance to the TSB-2555, but have a narrower front rim and a different hole pattern on the back. The exposed diaphragm area is about the same as the 3035. To check the noise of the capsule itself, I hooked it up to a 2SK660 and known quiet biasing circuit, and they are very quiet.
Since the capsule has a built-in fine mesh, I removed the inner mesh from the front half of the head basket; no noticeable hum. By plugging one of the rear vent holes, the sound at 180 degrees was less 'scooped'.
Someone is selling on e-bay capsules that appear to be the same; I haven't received it yet so can't confirm if it is.
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