Stop Barking Dogs: Powerful Ultrasonic Dog Bark Control LRAD Sound Cannon! Don't fry your amplifier!

I love it, you mad scientist! 😎

Great video. I've bookmarked this in case I need to go this route at some point in the future. For those of us with no experience with this type of equipment, it would be nice to see a video showing all the parts disconnected, and then watch as you put it all together, piece by piece. Nevertheless, I appreciate the time and effort you put in on this project. Thank you!

Please do a tutorial on how to build this

Low cost Ultrasonic Dog Barking Cannon for under $500: Posted for those who asked for a low cost solution. MAKE SURE YOUR IMPEDANCE MATCHING IS CORRECT OR YOU WILL HAVE ISSUES! 1. Combined O-Scope and Signal Generator $178. www.amazon.com/dp/B089GG14BP?ref=emc_s_m_5_i_atc&t… 2. Crown XLi 800 used $200: With the speakers specified start out with 5 to 10 Volt output and don't go much beyond this or you may be at risk of blowing something out. START with running the volume at 1/4 volume on the knob and see if the dogs stop barking. DO NOT increase the volume more than 50% on the knob unless you are calculating and measuring. 3. Skar 600W Super bullet tweeter $30 each: You will need an array of at least two for LRAD. TARGET no more than 50 Watts for steady state operating the system. www.amazon.com/dp/B01N217DS4?ref=ppx_yo2ov_dt_b_pr… 4. Place your cannon as close to the dogs as possible. Use outdoor speaker wire long enough to do this. Use the O-Scope to measure VPP for matching input voltage between your Signal Generator and power amplifier. You will be able to work with a sine wave and see clipping on the O-Scope. The amplifier also has clipping detection and a circuit breaker if something goes wrong. See link in other comments to wire your speakers in series or parrallel as needed. Stay within the manufacturers impedance limits between your speakers and amplifier. This is still a relatively high power system and you will need to test the range or distance you are able to achieve before blowing your speakers out or triggering the circuit breaker on you power amplifier. Build at your own risk because I did not build out one of these so you are responsible to make this work on your own. Wear ear plugs! This is still NOT A TOY and be cognizant to avoid damaging the dog's ears. Good Luck, but yes a low cost unit is possible. I Engineered mine for at least 300 feet range or distance and I don't know the distance you can safely achieve with this type of equipment. I would not try this unless you have electronics experience and know what you are doing. But if you did have electronics experience you would already know this. 😃You could still go lower in total cost but need the knowledge, experience and will need to figure this out on your own. This is just pointing you in the right direction and a good place to reliably stop.

This is just excellent, respect!

THIS is exactly what I'm looking to do, but I'm honestly not smart enough to put it all together and understand how to tune it in etc. It's not even a money issue. I would buy the stuff but just end up not being able to make it work. I wish I knew someone as smart as Yurij to help..

This is an awesome video. I need something like this. My neighbors 4 dogs have me without sleeping for 2 yrs now ! So sad I don't have this kind of skills. I am going to subscribe in the hopes you put together a video with a shopping list and step by step instructions.

Ok....the reality is most people don't have thousands of dollars to make their neighbors dogs shut up. Lol

This seems to be an excellent solution. I'm wondering now how to trigger this in response to a bark, because I don't want to be flicking switches all day and also I'd like the dog to receive 'training' when I'm not in, or not able to trigger it manually. Also you have a lot of things going on here but can you not massively simplify this with a small tone generator that plugs into a standard amp with standard matched impedance speakers - with Tweeters to carry the higher frequency? You may need to preamp the signal to get best performance but all if your calculations and measuring devices would seem redundant if you use kit that is matched in terms of signal level and outputting at the level you want: 1, 2, 500 watts etc

Hey Yurij, do you have any feedback on the best frequency (or combination of sequential frequencies) and waveform to use to deter the barking? Have you tried other waveforms other than a sine wave? TY.

I may be mistaken, but per the tech specs, I note that the tweeters you are using (PRO-DKH1) have an upper frequency limit of 18.5 kHz, but you refer to 25+ kHz in the video? Are the tweeters reaching these higher levels?

Thank you so much for this video instructional and your replies to the comments--this is YouTube gold! I'm looking to build a more affordable version and I'm wondering what the potential problems are with using both AC and DC powered equipment together? For example, why is it undesirable to pair the Rolls Testoscillator (DC powered) with the Crown amp (AC powered)? Would pairing the Rolls (or similar) with a DC powered car amp be better? Or is it just the DC-to-AC converters that are the concern? Thanks!

Thanks for this, Yurij! I was looking for a solution to my inconsiderate neighbors who have no problems letting their dogs bark all night, and this is by far the best I've found. It really does work. It is by no means cheap, but how much is your sanity worth? Your video doesn't do justice to how loud this setup truly is. At 1KHz, with the amplifier gain set at less than one, the sound level is 105dB 10' away at horizontal in a 15'x15' room - that's human hearing damage loud! Folks, if you go this route, make sure you have hearing protection when testing your setup. I do have a few questions. While I have lots of familiarity with DMMs and can navigate around a signal generator, I haven't had much experience yet with oscilloscopes. How and where do you hook up the oscope probe(s)? I say "probe(s)" because it looks like you're already pulling a reference signal from somewhere. I see you mention to use the 10x probe, but I don't know where to hook it up. Are you just going to speaker channel positive with the probe and the amp chassis with the probe ground? Don't want to foul my oscope. I guess some of this will depend on how you're connecting the speakers to the amp output. Are you just connecting your speaker wires directly to the bridge output connections on the amp? The oscope piece is all I'm really missing because I can't "see" all of the aspects of the output. Again, much thanks for posting this and for any answers you can provide. You're my hero!

Awesome video brilliant! I had a few questions for you setup wise. I have a Rolls MO2020 Testocillator and I have the same tweeters you had used as well as a few 100 watt amps here. Do you think the Rolls would do the trick? If so Sin or Square wave? Thanks again!!!

Hey mate, Thanks for the video I really appreciate you sharing this solution. I’m having major problems with my neighbours dogs, have been for the last 2 years now tried everything to resolve it even offered to pay thousands for equipment to no avail. I truly hope this might be an effective remedy. I’m a real novice when it comes to all this tech spec & engineering related info so could you please confirm if the products listed below are all that’s required? Product List 1. Siglent SDS 1104X-E (x1) 2. Siglent SDG 1032X (x1) 3. Siglent SPA1010 - 10 Watt Amplifier (x1) 4. Siglent SDM3045X (x2) 5. Crown XLi3500 - Two Channel 1350W Power Amplifier (x1) 6. DSL8 PRO-DKH1 Tweeter speaker 600W (x2) Do you also need two of the crown XLi3500 power amplifiers & two of the Silglent SPA1010 pre amps or is one of each enough? I’m just wondering if a second of these is necessary & if so why that is? Curious as well if I need to purchase additional cables / equipment to connect everything? You mentioned you’re an engineer & I’m definitely not so is it easy enough to put together oneself? If not I’ll look into hiring someone once I’ve got everything sorted. My brother is a sparky so perhaps he can if I’m unable. Apologies for any amateur questions also, this is not in any way my area of expertise. I wouldn’t even have to do this if I didn’t have neighbours who keep entirely unexercised cattle dogs in a ridiculously confined space.. do the math. Again I really appreciate you sharing this you’re a legend. Thanks.

So how does this precisely work? Does it automatically give out the ultrasonic sound whenever the dog barks, stopping the dog from barking, and then it automatically turns off? Or it is always on giving out ultrasonic sound all the time?

Hey. I’m going on 5 years of issues with my neighbor. I have about 4 failed attempts at building an lrad. I need to reach 300’. Would you consider selling a plug n play unit?

Question, read a lot here. Can I take an Amazon unit that's battery operated and hook it with longer wires to a car battery in my yard and then stealth place the unit close to where the dog barks further away? Or can i have said unit direct the sound into a microphone and speaker set up and simply amplify the volume and range? Sounds like the sin wave is what comes out of any of those units, so does that travel into a microphone and can be made louder with any home speaker set up? Or does it end up getting distorted or can not be captured at all and amplified? Thanks.

What frequency are you using? Is it better to go >20khz for dogs?

Hey mate, how can I contact you? I'm gonna get fired from my remote job, my neighbor has 4 dogs who bark all day and night... I bought 4 devices on amazon en Ebay already and they don't work at all. I involved police, tried talking to him , etc, nothing has worked! and I'm at my wits end, please help!