Icantthinkofaname
Well-known member
Can the TSB2555 be made omni by closing the backplate holes? Has anybody here tried this before, if so how did it affect the sound of the capsule?
I've got a couple iSK Pearls which use TSB2555s, I just haven't tried it yet, since I lack the equipment to do measurements. I suppose I could just tape the vents up and record a source with one taped and one regular and use a spectral analyzer plug in to see the difference.xeawr said:Hi, I'm just trying to help a little, but I must say I have very limited experience in microphone building.
theoretically any unidirectional capsule can be transformed into an omni if the corresponding holes, usually in the back, are being closed. As far as I know, from the occasional chat with some well known microphone manufacturers, this is a rather futile enterprise, because as the capsule/microphone changes to omni, its sound usually doesn't change for the better (there are more factors to alter when designing an omni capsule - so I've been told). The only microphone that I know, that will work and sound good this way is the Shure KSM141.
I've considered this "closing the holes idea" with some (mid priced) externally polarized SDC mics. I know this all doesn't really help, as you wanted to know what it sounds like. All I can say is: probably not very useful. Maybe you can "emulate" the sound of it by grabbing a CM3 (not saying the CM3 use this capsule ) or the like and wrap some masking tape around the vents?
Good luck!
I'm not sure where to source decent omni capsules other than Mic-Parts (which is pretty expensive), electret or otherwise.xeawr said:Sounds like a plan, additionally you could also record a sine sweep with each mic to give you sort of a frequency response (difference). Anyway let me know how it goes (and sounds).
By the way, you could also just try to stick one of the many omni capsules in there. Would probably be less hassle modifying the capsule
Icantthinkofaname said:Can the TSB2555 be made omni by closing the backplate holes? Has anybody here tried this before, if so how did it affect the sound of the capsule?
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