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Funny you should ask, I did exactly this (). I made a Primo EM-184 with Simplest P48 and built
a clip-on mount to attach it to a mandolin, with the rough intent
of duplicating a 4099. From a previous post: "they [the EM184]
aren't made now -- there are newer replacements for the same thing
that they make) and I compared it with a DPA d:vote 4099. After a
bit of EQ, they were just about indistinguishable to me. The
directionality would certainly be different, but it wasn't a
problem for me in practice. The main issue was that the primo
doesn't have the bass rolloff you would expect/want for an
instrument-mounted mic, but it was easily handled with eq." That
lack of rolloff manifests in a boomy sound and a thump every time
you pick a note, body handling noise, higher chance of boomy
feedback, etc. Capsule suspension (which helps tame the thumps and handling
noise) is also another tough thing to get right (with mandolin you
hear tons of pick noise otherwise.) One version . I think suspending on little loops would be better. The capsules are so light that you
have to find a way to mount them very gingerly, which makes your
suspension method prone to failure. These days with 3D printing
(especially since you can 3D print pliable materials now) there
may be more clever ways to handle this! In retrospect, it was easy to get a sound that matched the 4099,
but an awful lot of work to get the mounting system together, the
suspension, etc., and on that score the result wasn't nearly as
good. The SNR spec is probably not quite as good but I don't think
that really matters for this kind of application. I think with the
4099 what you are paying for is really the overall system, the
discreet low-profile look, the reliability, "just plug it in and
it sounds right", etc. It was a fun project that I don't regret
but if I valued my time I would just buy a used 4099. :-) -c
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