Attaching the RM1 to any boom stand

I know:  you're a professional and you know this.  Maybe not though.  Some first-time reactions to the RM1, professional or my daughter, is that it's fragile and needs to be handled carefully.  This is possibly the result of the feel of the Spandex/Nylon grille contrasted with its solid and heavy frame,   Don't be fooled.  You can grab the mic anywhere, including wrapping your fingers around the grille.  You can poke your fingers in there too and, unless you are really deliberately destructive, you can't really damage the ribbon unless maybe you poke a screwdriver in and stretch the grille and popfilter all the way into the ribbon.  Think of the RM1 as a really good carpenter's hammer.

So just grab the thing and hold it up and, with the boom arm free to extend and rotate, thread it into the shockmount receptical.  This is hard-anodized aluminum and thus has a very smooth non-binding surface.  You'll be able to thread it in like "butta".  

Once you've fully-engaged the thread and it's securely on the boom, you'll have to give some thought to the whole thing going over and ruining both your session and maybe even the RM1 itself.


Mic-stand Statics 101

The RM1 weighs about 7.5 pounds.  It's "heavy", and for a lot of very good engineering reasons.  The most germain reason is that, like large pipes needed to pump large quantities of water, the RM1 needs a lot of iron to pump its massive magnetic energy efficiently to the air-gap where the ribbon diaphragm vibrates.  

This weight has a double-edge:  It makes an RM1 on a mic stand way more resistant to tip-over when the mic's center of gravity is well inside the extent of the supporting base.  This also makes the same assembly way more unstable once its center of gravity falls outside the base.  Here's a simple drawing of this:

 

On the left-hand part of drawing, the mic stand center-of-gravity (CG) is probably close to its geometric center on its own.  Add the 7.5# RM1 and the total CG of the assembly will probably be close to a distance of "A".  If A exceeds the dimension of the support base, "B", then the mic stand and RM1 stand a good chance of tipping over.  Rotate the supporting-base arms shown by 180 degrees and support gets better.  If the mic stand has a very heavy structure, you can get away with a "close call", but stay away from this.

On the right hand drawing, you could add a counterweight (in red) weighing "W" pounds at a counterweight-arm distance of "C" from the center.  Many professional mic stand manufacturers make counterweights available for their products.  If the bending moments caused by the counterweight (in one direction) and the RM1 (in the other direction) cancel, this is ideal, as it puts the total center of gravity right on center of the mic stand.  This is a simple static balance and can be calculated by simple arithmetic relationship:

W x C = 7.5 x A , where W is in pounds, C and A are in any  common unit of linear measure

If you have a weight W, you can solve for the counterweight arm dimension :

C = (7.5 x A) / W .  If you had a 3.75# counterweight, C would be 2 x A.  And so on.


So, be safe, consider these factors, and test your stand setup and make sure it feels secure and stable.  


Shlepping the RM1

The RM1 comes in a really beautiful matte-black-and-silver box for shipping and storing.  A thing of beauty for your mic locker but not something you want to take to the session or on the plane.  I suppose we could have "tooled" a custom box and sold it for $950 by the time we made a business out of it.  Stupid.  So, here's what you need:  Either a Pelican 1300 or an SKB 3i-0907-6b-L 6.  They're on the order of $50,  Go price online (duhh). They are military-tough and waterproof and really cushion the RM1 nicely.  Not a bad shipping container either; keep the case's shipping box for this 

We got an SKB here and it's perfect.  Take one of the foam strata out (leaning on the left of the case, below) and it just closes down beauty on the shockmount arms.  Screw them tight so they don't rotate and it's perfect.  Kodak moment in New England: