Powerful underwater speaker

[shenzhen]

For many years, we have been using a homemade underwater loudspeaker at our base to entertain and notify divers. We simply put a powerful speaker in a pressure cooker, installed ip68 cable gland in the lid and connected the wire to an amplifier on the shore. The pressure cooker is at a depth of 5 meters, the speaker power is 50 RMS, the amplifier power is 25 RMS. The speaker was loudly audible underwater at a distance of 30-50 meters, weakly audible at a distance of up to 100 meters.
This year, we replaced this speaker with a 50-watt vibration speaker and received an incredible increase in volume. Now music or our voice commands can be clearly and loudly heard at a distance of 450 meters on the opposite shore.
I do not propose to pollute all the seas and lakes with loud sounds, but I want to share an economical technical solution that competes in efficiency with expensive specialized systems and it can be useful for various purposes.
For example, in our case, we transmit voice commands during underwater sports events, repair work, etc. Also, some experienced divers quite accurately indicate the direction of the sound source and use it for underwater navigation.

 

[ps444mike]

not really a fan of a speaker playing under water.. could you use a full face mask with coms ?

 

[LEO1982]

For many years, we have been using a homemade underwater loudspeaker at our base to entertain and notify divers. We simply put a powerful speaker in a pressure cooker, installed ip68 cable gland in the lid and connected the wire to an amplifier on the shore. The pressure cooker is at a depth of 5 meters, the speaker power is 50 RMS, the amplifier power is 25 RMS. The speaker was loudly audible underwater at a distance of 30-50 meters, weakly audible at a distance of up to 100 meters.
This year, we replaced this speaker with a 50-watt vibration speaker and received an incredible increase in volume. Now music or our voice commands can be clearly and loudly heard at a distance of 450 meters on the opposite shore.
I do not propose to pollute all the seas and lakes with loud sounds, but I want to share an economical technical solution that competes in efficiency with expensive specialized systems and it can be useful for various purposes.
For example, in our case, we transmit voice commands during underwater sports events, repair work, etc. Also, some experienced divers quite accurately indicate the direction of the sound source and use it for underwater navigation.

Great innovation!
I wonder if it would be possible to connect this speaker to the OTS Diver Recall System (DRS-100)?

 

[NothingClever]

I’m a hugger not a hater but if I were diving somewhere and somebody dropped a speaker in the water, I’d be seriously tempted to cut the cable.

I think the majority of divers would find your intrusion into the silent underwater world most unwelcomed.

 

[shenzhen]

I think it's relatively easy to do. If you put a power supply, a vibration speaker of suitable power, and an economical class D amplifier in a reliable sealed case, all you have to do is connect it via a sealed connector to the DRS-100. Perhaps you could then add a volume control.
I assume that there are many similar designs, for example this one: Using a vibration speaker allows you to significantly increase the volume or reduce power consumption, increase battery life.

 

[NothingClever]

I think it's relatively easy to do. If you put a power supply, a vibration speaker of suitable power, and an economical class D amplifier in a reliable sealed case, all you have to do is connect it via a sealed connector to the DRS-100. Perhaps you could then add a volume control.
I assume that there are many similar designs, for example this one: Using a vibration speaker allows you to significantly increase the volume or reduce power consumption, increase battery life.

That video was painful to watch.

 

[LEO1982]

I think it's relatively easy to do. If you put a power supply, a vibration speaker of suitable power, and an economical class D amplifier in a reliable sealed case, all you have to do is connect it via a sealed connector to the DRS-100. Perhaps you could then add a volume control.
I assume that there are many similar designs, for example this one: Using a vibration speaker allows you to significantly increase the volume or reduce power consumption, increase battery life.

Cool!
I have 2 DRS 100s but no underwater speakers
I was wondering about this
Maybe this will work!
Do you know what type of connector the OTS console has? Where can I buy one?

Greetings from afar
LEO

 

[LEO1982]

I’m a hugger not a hater but if I were diving somewhere and somebody dropped a speaker in the water, I’d be seriously tempted to cut the cable.

I think the majority of divers would find your intrusion into the silent underwater world most unwelcomed.

We usually use this kind of equipment to shoot videos in the pool, not in the sea, haha, so it's hard for you to hear

 

[BoundForElsewhere]

that has serious practical joke potential.

whale song
dolphin signals
submarine pings
theme music from jaws
barry manilow

 

[OMyMyOHellYes]

that has serious practical joke potential.

whale song
dolphin signals
submarine pings
theme music from jaws
barry manilow

Asswipe (pronounced ahs-wee-pay) sometimesdoes that sh!t, usually Sunday afternoons, at Scuba Ranch in Terrell, playing Baby Shark doo doo dooo dooo doooo doooo. I would like to see someone remove the leads from the speaker, attach them to Asswipe's gonadical appendages and put a REALLY BIG AMP on there and crank it up to 11! (figurately speaking, of course)

It is a serious disturbance to my calm.

Maybe in your own pool, with the express consent of all present, but never, ever, ever in a shared body of water.