How about coring out an old A/C wall unit and using that for a broadcast system housing? Should work pretty well for both protection and stealth factor.
Speaking of protection, how does a set of desktop speakers handle the elements? Wouldn't rain and such be an issue, or does the building itself keep them sheltered?
I realized these hoodrats have hours and hours every day and night to inspect and identify exactly where the sound source is located, so I'm thinking to skip stealth and invest in better strength of protection.
For the original version of this project, I used a mix of new and old desktop speakers without any weather proofing characteristics or modifications. The homemade housings I made were not weather proofed either.
Depending on manufacturer build quality, I found desktop speakers can run for 1-4 years continuously before dying and are not affected at all by heavy rain, high wind, freezing cold, or extreme heat. What I found wore them out fastest in terms of environmental conditions was west-facing sun exposure in the summer. The intense western sunlight will make the plastic elements of the speaker driver and housing brittle over time, which can weaken the sound output. Maybe more water gets into the speaker and corroded the internals when the housing starts to crack.
In fact, the 2nd pair of used speakers I got for the original project is still running today in an active broadcast unit, although it was probably only continuously run for about 2 years, since there was a few years gap between the original version of the project and the current iteration when I deactivated most of the old units.
What destroys desktop speakers fastest is playing a lot bass-boosted "ear rape" versions of songs.
I also tried bluetooth speakers in the original version of the project. They also turned out to be quite weather resistant, but their internal battery doesn't last for years of continuous plugged in use, so not as ideal for this purpose. Also, if the Bluetooth connection is ever broken (mostly due to power outage or the media player rebooting or resetting), it is a pain in the ass to have to climb all the way back up to push the reset button on the speaker.
I suggest finding a copy of the Hanna Barberra sound effects CD that came out a decade or so back.
50 minutes of SPLAT BANG Room A Zoom Zoom! with no rhyme or reason should have the desired effect.
Actual outdoor grade PA speakers have gotten much cheaper than they used to be.
This is one of the cheapest I have found
Cheap PA Horn
If you buy more they get cheaper
A Bunch of Cheap PA Horns
These are bout the same price each but they are a larger and higher wattage speaker.
What you are doing now seems to work but you might try the PA horns in the future.
You would need to come up with an amp for them.
I would recommend hiding the amp inside and running wires to the horns.
Congrats on returning civilization to your own corner!
Way to "be the change".
Yes You Can!
This probably isn't what 0bama had in mind when he said that but oh well.
I didnt know purpose built PA speakers could be inexpensive. I will check this out.
I have to ask how the fuck, did you get that up the wall? my partner said the wall looked in the back area looked looked library. Overall very impressed, i just wanna see the reaction for Converter being played
I have been mounting these broadcast units about 13 or 14 ft above the ground. It only requires an 8 ft ladder to reach, but the hoodrats don't have ladders and the protective cage is vandal and tamper resistant now.
I used an impact drill to put some concrete anchors into the wall as attachment points for the cage.
Point of curiosity on my part, forgive me if this has been covered earlier but are the speakers water proof?
The desktop speakers are not waterproof, but they don't have trouble surviving years in the rain.