Posted by: "lampmeister"
>
> Walt, I'm aware of your NT2000 improvisations from other threads,
> sounds interesting. If I went this route I think I'd start totally
> from scratch and make the windshield frame from plastic piping and try
> and create something whereby a pair of NT2000's can be used in M/S,
> X/Y, and maybe even spaced pair settings. I love a challenge!
Since I have a lathe and milling machine I did not start from plastic
piping but from raw plastic. Mostly I prefer delrin as it machines well.
You pretty much have to start from scratch for the NT2000's, they come
with some indoor suspensions, but you are on your own for wind
protection. Working from the supplied suspensions you could not do
coincident setups like M/S or X/Y, but only spaced pair.
My design criteria include keeping the design compact and for M/S or X/Y
you need the mics as close together as possible. After looking at
suspending each mic independently for M/S I decided to mount the two
mics as a combined unit and suspend that. This resulted in the two
NT2000's being mounted within 1/8" of each other and inside a 4 3/4"
circle. That will fit the M/S rycote zeppelin that I have and allow the
use of the mics as M/S or X/Y. And one of the mics can be replaced by a
NT1A for the mid, or even mount two NT1A in X/Y in the same setup. It's
not suitable for spaced pair but I don't care for the complexity of
spaced pair for nature recording.
Currently I'm fiddling with the suspension of the mic support disc. The
disc I'm experimenting with was cut and machined from 4" delrin rod.
Part of my problem is that the lathe and milling machine I have are mini
versions so machining the next piece will be tricky as it has to be the
diameter of the zeppelin. I'll probably end up doing lathe type work on
the milling machine with a rotary table I just got. Actual vibration
suppression will probably be silicon o-rings in compression, or maybe
use silicon putty to form the flexible part. I have to decide that
before starting machining the piece. I may even end up with a little
larger mic support disc.
The rycote zeppelin will fit on the part I'm designing now, without the
removable end cap as it will be vertical. Once this piece is done it's
just a matter of machining and attaching a mount.
I don't see using it hand held due to the weight of the mics, though I
will design the mount so that could be done. This whole exercise is
just a prelude to building a new mount for the MKH-80 pair. They will be
hand holdable.
Yes, it's a challenge, and when done will be quite different from the
usual designs.
Walt
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