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Small vs. large diaphragm condenser mikes for recording grand piano at home
On 4 Sep 2003 08:08:24 -0700, (David Satz) wrote:
I'm surprised that there aren't somesuch available commercially.
Or are there?
I haven't seen any so far, but Sanken recently announced a product of this
type, model HAD-48, which is to be available in a few weeks at a projected
price around $200 apiece. It's an in-line device about 4" long which runs
off of phantom power (3 mA per microphone) and offers switchable 20 or 40
dB gain. It can be attached directly to the XLR-3M plug of a ribbon or
other dynamic microphone and has its own XLR-3M output.
Hi David,
That sounds like an excellent commercial packaging. I've seen those
sleeves around somewhere, probably Switchcraft, but don't see them
now. My current thought is just to build it into a cable or adaptor
that's already otherwise needed.
Frankly the specifications were a bit disappointing; on paper it seems
like a product that will inspire someone else to make a version with
somewhat better performance, especially in the areas of input noise
(it's specified only as "noise," but since it's given as -121 dBA I
figure that it must be equivalent input noise) and frequency response
(it's down a dB or two on top and almost 3 dB on the bottom).
I'm more surprised by the bandwidth limitations than by the noise
spec (they're not pulling much current). Low noise voltages mean
low impedances, and so wide bandwidths. Puzzling.
Plus the "expected receive side impedance" is specified as 10 kOhms which,
if true, would exclude most real-world mixers and preamps. But I was told
that "it will work with lower loads as well." So we'll see. I'll post a
message here when I've had a chance to measure them and/or try them out.
Maybe the 10 kOhm load is only needed to get 40dB gain. Phantom
resistors alone are 13.62 kOhms load, so.....
Would you like to try a beta prototype of the r.a.p. project?
Email me a USPS address.
Thanks,
Chris Hornbeck
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