XY in a Mini-ALTO

During my recent experiments to see whether you could fit an ORTF pair into the diminutive Mini-ALTO windshields from Radius Windshields, I began to wonder whether any of the four mics I found that worked for that purpose would allow other stereo configurations in the windshields, including XY. Of the mics I used for the ORTF experiment, the DPA 4011 capsule with the MMP-GS preamp was the only one short enough, having an overall length of 33mm; but the mic pair was on loan only and had a little too much self-noise for my liking (OK, 18dBA isn’t that bad!). You can imagine, then, that I was delighted to receive a pair of an upcoming smaller version of the Nevaton MC59 cardioid. The standard MC59S + 59/C sounds excellent and has low self-noise (8.6dBA), and is already a short mic at 47mm: rather incredibly, and largely due to the miniaturization of the preamp (just 5.5mm long), the MC59uS + 59/C2 combination halves that to give a length of just 23.5mm, and, with a side-exit cable, its effective length is less than half that of its sibling. I will be looking at the mics in more detail in different posts, but suffice it to say here that the idea with the MC59uS + 59/C2 has been to keep the same acoustic and electrical specs as the larger standard version.

Anyway, with such small mics in hand there was scope to have a play with the idea of XY in a Mini-ALTO. First up was the challenge of mounting the mics, and here I took advantage of the MC59uS having magnets in its base (goodness knows how they were squeezed in!), so I used some powerful Neodymium magnets (Simon Davies at Radius kindly sent me some of the ones they use in the windshields) and incorporated these into a mount: the rebated form of the magnets means it is really easy to keep them secure and not popping out.

So there you go: another fun test with a bit of 3d-modelling and printing for another type of stereo in a Mini-ALTO. As with my mid-side pairs, this fits comfortably in the smallest model – the Mini-ALTO 115. I’m very much aware that the MC59uS + 59/C2 mic is not yet in production (first batches are planned in October-November) and will be fairly expensive (more than the standard MC59/C models) and, therefore, won’t be a choice for every recordist. But, as I said in the Mini-ALTO ORTF post, if DIYers are wanting a much more affordable ultra-short cardioid, but still with decent specs and sound, then the Primo EM200 (which is what I believe is used in the well-respected Line Audio CM4) could easily be housed in an equally short, if not shorter, body: in fact, I’m rather puzzled that none of the many small businesses making Primo-capsuled mics haven’t done so already. Perhaps there are other mics that might fit. Whatever the case, I hope this small project might inspire others to have a play: the modularity of Radius hoops is a call to inventiveness!