Water chamber sub

[Guss]

I wanted to use water as another way to extend low frequencies. Due to mechanics contraints I wont use an underwater method. It could be a water filled bag placed in a big pipe. I will tune it as any other 4th order sub than change the amount of water depending on what sound I get...

[ksl]

something like this?

[JoeBob]

Wouldn't placing water in a tube simply act as a port in a bass reflex enclosure?

If so, what would the point of filling it with water be? Wouldn't it simply change the tuning frequency of the system?

I see if you use a completely water tight driver and placing it where both in front and behind it there is water, al la band pass type enclosure. Then the results might be interesting. But it seems to me, now that the thread has become ways of trying to incorperate water in any way to a speaker system. Don't get me wrong, water is cool and using it would be very cool, just don't think that slapping water somewhere will suddenly give you massive bass output.

[ksl]

i think that it can make an interesting sound, because the water has a great inertia and no spider to bring it back to a fixed position. and there is gravity working with the water, also

possible that the port will work like a passive radiator with a big mass

but still have to fight with the moisture

[JoeBob]

and the evaporation, unless you use a bag, but then it must be water tight and hopefully not affect the sound with it's resonance too much...

[ksl]

condoms or airballoons would help, because foil bags can make other sounds

[Guss]

Ok lets face it, using water in a sub would be really cool even if there is no benefits. The problem with this is that water tends to wet things. probably using a sealed bag staked in a tube acting as a part of the baffle would be the solution.

like this! I have two MAX PENTIVENT 6.5'' sub laying around here so I got nothing to lose but my time and a big plastic tube.


image

[kelticwizard]

The blue area is the water bag and the grey area is air. Could be interesting. Easy to make and it won't cost much, that's for sure!

PS: I caught the picture before it went off. Geocities and Tripod do not support pictures that last very long.

Better to just upload the picture to the diyAudio server. either that or get some webspace from your ISP that is not Geocities or Tripod.

[Guss]

lets find a big tube now...

bigtube.com still unaivailable lol

PS
yes I had an uploading problem with the picture but now it works fine on my computer, isnt it? lets prevent...
image

[kelticwizard]

Guss:

Works fine now. It worked fine before, then I came back and it was off. Then it came back on.

I have tried to upload pictures to this site and others from Tripod and Geocities, and I found that they uploaded fine at first, but within a day or two were gone. Something about those free services does not function well for uploading images.

I wonder if they don't do some interrupt on a daily basis, to prevent people from posting these on websites. Saves them bandwidth.

But you are fine, so far.