waterproof microphone

[ian field]

"Eugen Artus"


** What you are asking for may be impossible.

All depends on what sort of SPLs are actually trying to measure.

Cos a mic exposed to rain and wind is gonna make a lot of noise you do not
want.

Especially wind!

 

[default]

Electrovoice used to make genuine waterproof speakers for continuous outdoor
use if that helps. Doubt they do any more though sadly but you never know.

Graham

I bought a military surplus 4" speaker to mount on my boat. US Navy
surplus. From the looks of it they just impregnated the paper of the
cone with varnish, ditto the spider and lead wires (and it is a high
quality die cast aluminum basket). The whole shebang was mounted in
drawn aluminum case with a couple of pilot lights and a connector.
Water never made it past the cone.

Sits on the center console in all kinds of weather, salt spray, etc.
and never a bit of problem with it. Not high fidelity, but great for
VHF radio.

 

[Eeyore]

I bought a military surplus 4" speaker to mount on my boat. US Navy
surplus. From the looks of it they just impregnated the paper of the
cone with varnish, ditto the spider and lead wires (and it is a high
quality die cast aluminum basket). The whole shebang was mounted in
drawn aluminum case with a couple of pilot lights and a connector.
Water never made it past the cone.

Sits on the center console in all kinds of weather, salt spray, etc.
and never a bit of problem with it. Not high fidelity, but great for
VHF radio.

Impressive it must have lasted that long. I think Tannoy in the UK used to make
something similar for the Royal Navy. The speakers they made for the RAF had 'RAF'
carved into a wooden grille. VERY stylish, but then the RAF always has been !

Of course now with synthetic materials it's easy to make such speakers.

Graham

 

[Eeyore]

"Eugen Artus"

** What you are asking for may be impossible.

All depends on what sort of SPLs are actually trying to measure.

Cos a mic exposed to rain and wind is gonna make a lot of noise you do not
want.

Hence my suggestion of Rycote. It's the best you can get AIUI.

Graham

 

[Eeyore]

"Eeyore" wrote

Would filling the rubber johnny with helium make any difference?

LMAO ! It's been years since I've heard a condom called that too. About when I
first had sex (age 16).

Graham

 

[Eeyore]

If you fill the johnny with enough helium to lift the mic you can tether it
at the right height with the mic cable.

I can see this catching on in studios. Think of the possibilities of getting
rid of all those tiresome stands !

Graham ;~)

 

[Adrian Tuddenham]

Impressive it must have lasted that long. I think Tannoy in the UK used to
make
something similar for the Royal Navy. The speakers they made for the RAF
had 'RAF'
carved into a wooden grille. VERY stylish, but then the RAF always has been !

Vitavox made a waterproof and explosion-proof 3" unit with an aluminium
cone which was sandwiched between two firmly fixed, spaced, perforated
galvanised steel cones. The spacing allowed the aluminium cone just
enough movement to vibrate normally without touching the steel cones,
but the pressure wave from an explosion would just drive it hard against
one of them, instead of tearing it right out of the unit.

Presumably a heavy wave breaking directly into a similar speaker without
the steel reinfocement cones would also have the potential to damage the
cone.

 

[Rich Grise]

I can see this catching on in studios. Think of the possibilities of
getting rid of all those tiresome stands !

Although the music might sound a little hollow...

Cheers!
Rich

 

[Adrian C]

LMAO ! It's been years since I've heard a condom called that too. About when I
first had sex (age 16).

This was you?

<

>

 

[Eeyore]

This was you?

<

>

No, I can still pull 20-30 girls.

Graham

 

[Phil Allison]

"Adrian Tuddenham"

Vitavox made a waterproof and explosion-proof 3" unit with an aluminium
cone which was sandwiched between two firmly fixed, spaced, perforated
galvanised steel cones. The spacing allowed the aluminium cone just
enough movement to vibrate normally without touching the steel cones,
but the pressure wave from an explosion would just drive it hard against
one of them, instead of tearing it right out of the unit.

** Probably this one:

http://www.vitavox-sound.com/WatertightNavalLoudspeakers/tabid/124/Default.aspx

112 dB per watt and withstands a 70G shock.

Described a "blast proof " - because the phrase "explosion proof " has a
quite different meaning when applied to horn loudspeaker drivers. It means
the device is safe to use in environments that may become filled with dust
or volatile fumes that can explode.

Yep - the SPL at the surface of a PA speaker's diaphragm can be high
enough to trigger an air-vapour/air-dust explosion under the right
conditions.

The usual fix is to install a " flame proof barrier " between the
diaphragm and the outside world, a couple of layers of stainless steel gauze
in the throat does the job.

An absolute MUST for PA speakers used in coal mines and many industrial
situations.



...... Phil

 

[[email protected]]

LMAO ! It's been years since I've heard a condom called that too. About when I
first had sex (age 16).

Graham

Yes, but, being raped by your 50 year old pervy uncle on your 16th
birthday isn't what most of us regard as having sex.
Thoughtful of him to use a johnny though.

 

[[email protected]]

No, I can still pull 20-30 girls.

Graham

Is that per week.
Spread the lurv!

 

[Eeyore]

Yes, but, being raped by your 50 year old pervy uncle on your 16th
birthday isn't what most of us regard as having sex.
Thoughtful of him to use a johnny though.

MORON !

Her name was Clair and she was gorgeous.

Graham

 

[Eeyore]

Is that per week.

Age group.

Graham

 

[krw]

[email protected]>, [email protected]
says...>

Is that per week.
Spread the lurv!

IQ

 

[ian field]

MORON !

Her name was Clair and she was gorgeous.

Graham

So what did you do after she got a puncture?

 

[krw]

Eeyore, or the girls?

Yes.

 

[Bobo The Chimp]

Yes, but, being raped by your 50 year old pervy uncle on your 16th
birthday isn't what most of us regard as having sex. Thoughtful of him to
use a johnny though.

What? 'Cause otherwise your butt would get pregnant and you'd have a
bunch of little shits running around the house?
-
Cheers!
Rich^H^H^H^HBoBo

 

[krw]

Added together, or multiplied?

Same number. He's a braggart.