Owned Posted May 25, 2006 Report Share Posted May 25, 2006 Today I added two 118 dB rated piezo sirens to my security system. I placed these under the HU with the intention that anyone daring enough to attempt to take my HU would not be very likely to enjoy being in the vehicle.These particular units are fairly small in size, but they aren't called 'pain makers' for nothing. I made a small ABS braket to mount them together and extended the wires to reach to my alarm brain.A quick shot of them mounted in place:I find that these piezos are more effective when reflected off glass. This means that the next step is to run another set under the OEM tweet grills and aim them at the windshield. I also have a pair of 130 dB rated big boys waiting to be installed.While the amount of sound outside the vehicle does not drastically change, the amount of sound inside makes for an extremely painful experience. So even if I can't hear my alarm and my pager is out of range, bumping, tilting, or other molesting of the vehicle will cause these to go into action. While they probably have no effect on external vandalism of the vehicle, at least the likelyhood of anything major being removed from the interior is reduced, which is my main concern anyways. Link to comment Share on other sites More sharing options...
maiku Posted May 25, 2006 Report Share Posted May 25, 2006 you need to have automatic childlock for ALL the doors, not just the rearso when the crooks try to get out of the car, they can't! Link to comment Share on other sites More sharing options...
the underlørd Posted May 25, 2006 Report Share Posted May 25, 2006 adam, you kick ass.carry on. Link to comment Share on other sites More sharing options...
b3atboxjr Posted May 25, 2006 Report Share Posted May 25, 2006 wow dude, what a great idea.next step will be flamethrowers mounted all along underside? fried legs, anyone? Link to comment Share on other sites More sharing options...
VolvoBoiClw Posted May 26, 2006 Report Share Posted May 26, 2006 i have the same things. Mine has a stage 1 sound and a stage 2 sound, incase someone is trying to play with the ignition... Link to comment Share on other sites More sharing options...
Owned Posted June 15, 2006 Author Report Share Posted June 15, 2006 I've just recently finished this small project. For this portion of the install, I used two of the same 118 dB piezo sirens and two 130 dB multi-tone sirens, which are similar to the one under my hood. The car now has a total of seven sirens and the effect is quite nauseating. Being inside the car has moved beyond painful and is now all but impossible to stand, given a naked ear.Here are some pictures to help tell the tale.After failing to snake through one of the gromets in the trunk floor, I chose to make my own path. I popped a hole from the bottom between the bumper and sub box to run the wiring for the 130 dB sirens.The wiring I used was just some 16 ga speaker wire. It runs along side my amplifier wiring to the alarm brain.Mounted sirens:The set of piezos puts the OEM tweet holes to a much, much better use than the paper cone jokes previously did. Their locations work out very nicely for this purpose and the OEM grills give it a nice stealthy touch. Driver's side test fit:Driver's side mounted. You can see where I had to C-notch the grill frame. Other than that one, small modification, these sirens were a perfect fit. Passenger side mounted:Passenger side installed. Even with the foam removed from the grill, you still can't tell there is anything menacing hiding under there. Wiring the pass side piezo was a real pain, I first tried to snake across the dash from the pass side through the tweet hole, but I kept getting snagged on the cluster. So instead, I went from the driver's side behind the console, to the underside of the pass side dash, then up to the tweet hole. It was a slightly longer run, but ended up being easier.Lastly, a little about the DEI tilt unit that I've added to my Compustar system.This piece can either trip at 1 degree or 3 degrees of tilt. Unlike a mercury ball sensor, this one constantly recalibrates untill armed, so parking on a hill or otherwise angled surface will not cause a false alarm.The unit itself has a fairly small footprint, as shown in this comparison to a CVR 12:The 850 has a great mounting spot for this under the OBD-II port:The testing of this piece with our jack made for some serious head aches. However, the alarm goes off before the wheels are even close to leaving the ground, so at least it works! There still are a couple of ideas that I've yet to apply, as far as security is concerned, but who knows when that'll happen. :lol: Link to comment Share on other sites More sharing options...
maiku Posted June 15, 2006 Report Share Posted June 15, 2006 you need a disclaimer on your carWarning! Stealing this car may cause the following side effectsNausea, vomitting, diarrhea, drowsyness, loss of mobility, loss of balance, loss of hearing and minor sexual dysfunction Link to comment Share on other sites More sharing options...
Gioseppe Posted June 15, 2006 Report Share Posted June 15, 2006 you need a disclaimer on your car Warning! Stealing this car may cause the following side effectsNausea, vomitting, diarrhea, drowsyness, loss of mobility, loss of balance, loss of hearing and minor sexual dysfunction sounds like a drink i had last nightTEQUILA!so if someone breaks a window, it would tilt the car 1 deg and set it off? Link to comment Share on other sites More sharing options...
Owned Posted June 16, 2006 Author Report Share Posted June 16, 2006 sounds like a drink i had last nightTEQUILA!so if someone breaks a window, it would tilt the car 1 deg and set it off?No, the amount of force needed to break a window wouldn't cause the suspension to squat enough to get a noticable change. Instead, there are other triggers in the system, including two shock sensors. One is set to warn and the other is set to instant on. A light bump will cause the system to chirp and flash a few times to let you know it's there. A stronger shock, but still less than the force required to break a window, will cause it to go into 'full effect.' Upon either event, the pager will go off and show which shock it was. At times, motorcycles will set off the warning sensor, but I haven't had false alarm issues on the second sensor. Link to comment Share on other sites More sharing options...
S70driver2 Posted June 16, 2006 Report Share Posted June 16, 2006 WOW forget stealing that car, you may have it but be deaf as hell!!!! ROFL to any one who tries, itd be like a flash bang going off inside a small space. good job Link to comment Share on other sites More sharing options...
maiku Posted June 16, 2006 Report Share Posted June 16, 2006 i'm wondering about the legality of this alarm system.. Link to comment Share on other sites More sharing options...
Owned Posted June 16, 2006 Author Report Share Posted June 16, 2006 i'm wondering about the legality of this alarm system..All I had to write down for my carry permit was "All legal intentions and purposes." That's also the extent of my use of this non-lethal system. Given that, I don't think any LEO would take issue with it. Link to comment Share on other sites More sharing options...
maiku Posted June 16, 2006 Report Share Posted June 16, 2006 its sure one hell of a theft deterent.... Link to comment Share on other sites More sharing options...
Atticus Posted June 17, 2006 Report Share Posted June 17, 2006 really not a bad idea since you got a good HU instaleld there Link to comment Share on other sites More sharing options...
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