Hi, not sure if I selected the right category or not, but am completely clueless when it comes to anything beyond basic audio knowledge. (essentially watts and bass vs. treble is about the extend). However, I am fairly handy and capable of building/wiring/soldering if necessary.
What I am looking to do is add an external speaker via 3.5mm aux port to an existing Bluetooth stereo and/or Coyote Caller. If it’s possible to make one and it would work on both, great…. If only one, I’ll take it.
My goal is to produce extremely high frequency sounds that are very crisp and clear, not sounding like a bullhorn/siren.
We have a coyote problem, and they used to come into the caller periodically, but I think they’ve learned to recognize the “speaker” sound, and I’ve read if you can get cleaner “high-pitched” realistic sound from a 20,000-40,000 hz tweeter, it can trigger them more easily.
My question is this: Is it possible to do a DIY high-end tweeter that is either powered by the 3.5mm Jack, or could be powered by an external battery/amp of some sort?
The devices I would like to plug it into are:
-Lucky Duck Revolt Predator Caller : https://www.luckyduck.com/the-revolt-e-caller/
-Anker Soundcore Motion Boom Plus: https://a.co/d/3T6eELs
Thank you so much in advance.
What I am looking to do is add an external speaker via 3.5mm aux port to an existing Bluetooth stereo and/or Coyote Caller. If it’s possible to make one and it would work on both, great…. If only one, I’ll take it.
My goal is to produce extremely high frequency sounds that are very crisp and clear, not sounding like a bullhorn/siren.
We have a coyote problem, and they used to come into the caller periodically, but I think they’ve learned to recognize the “speaker” sound, and I’ve read if you can get cleaner “high-pitched” realistic sound from a 20,000-40,000 hz tweeter, it can trigger them more easily.
My question is this: Is it possible to do a DIY high-end tweeter that is either powered by the 3.5mm Jack, or could be powered by an external battery/amp of some sort?
The devices I would like to plug it into are:
-Lucky Duck Revolt Predator Caller : https://www.luckyduck.com/the-revolt-e-caller/
-Anker Soundcore Motion Boom Plus: https://a.co/d/3T6eELs
Thank you so much in advance.
We don't get many coyotes here in Scotland, so I know as much about coyote callers as you do about audio!
That won't stop me from giving your thread a nudge though!
Your first link is to the, all bells and whistles, coyote caller illustrated above, while your second is to a portable, outdoor bluetooth speaker.
I have no experience with the former, but regarding the latter, the electronics is unlikely to handle frequencies in the ultrasonic range (> 20 kHz).
Consequently, there would be little point in plugging an ultrasonic tweeter into it even if you employed external amplification.
That's for starters. Let's see what the first-hand experiences of your fellow Americans are!
That won't stop me from giving your thread a nudge though!
Your first link is to the, all bells and whistles, coyote caller illustrated above, while your second is to a portable, outdoor bluetooth speaker.
I have no experience with the former, but regarding the latter, the electronics is unlikely to handle frequencies in the ultrasonic range (> 20 kHz).
Consequently, there would be little point in plugging an ultrasonic tweeter into it even if you employed external amplification.
That's for starters. Let's see what the first-hand experiences of your fellow Americans are!
Appreciate the response! I had thought about that…. Think I was just hoping to get one that could handle it so whatever the output device was putting out, it was able to maximize the frequency, even if “overkill”. That probably doesn’t make sense.
The Anker Soundcore Motion (predecessor and less expensive bluetooth stereo than the one I have) says that it is capable of producing up to 40 khz (photo attached)—— and the “Plus” version I have possesses the same Titanium diaphragms if I’ve researched properly.. so I’m thinking there may be a ‘chance’, ha.
At either rate — for arguments sake - is there a good high end external ‘tweeter’ only that can connect and be powered through 3.5mm? Seems like everything I’m finding talks about just a ‘general speaker’ with bass boost, etc….
And if not really a good commercial product, would DIY creation of a 3.5mm powered tweeter be feasible? Thanks again!
The Anker Soundcore Motion (predecessor and less expensive bluetooth stereo than the one I have) says that it is capable of producing up to 40 khz (photo attached)—— and the “Plus” version I have possesses the same Titanium diaphragms if I’ve researched properly.. so I’m thinking there may be a ‘chance’, ha.
At either rate — for arguments sake - is there a good high end external ‘tweeter’ only that can connect and be powered through 3.5mm? Seems like everything I’m finding talks about just a ‘general speaker’ with bass boost, etc….
And if not really a good commercial product, would DIY creation of a 3.5mm powered tweeter be feasible? Thanks again!
Attachments
I would regard "[reproducing] high frequencies up to 40 kHz for sound that has noticeably higher clarity" as pure marketing speak!
You could try a super tweeter, which must be protected from damaging lower frequencies by a series 1 uF film capacitor.
This sort of thing: https://www.madisoundspeakerstore.com/bullet-tweeters/fostex-ft17h-horn-super-tweeter/
However, I would source a less expensive super tweeter to use for experimental purposes before making a large financial outlay.
You could try a super tweeter, which must be protected from damaging lower frequencies by a series 1 uF film capacitor.
This sort of thing: https://www.madisoundspeakerstore.com/bullet-tweeters/fostex-ft17h-horn-super-tweeter/
However, I would source a less expensive super tweeter to use for experimental purposes before making a large financial outlay.
Appreciate the response…. So with my knowledge of building an external speaker = 0….
If I were to purchase the tweeter…. And solder wires into a 3.5mm Jack connection, would the Bluetooth speaker power it? Or would some sort of portable power source be needed?
Also, appreciate the heads up on the 1 Uf film capacitor. I have no idea how to connect that, but can YouTube it. On that note, I also saw these on Amazon, are they necessary? Or would it be redundant?
https://a.co/d/0hf2SN3
If I were to purchase the tweeter…. And solder wires into a 3.5mm Jack connection, would the Bluetooth speaker power it? Or would some sort of portable power source be needed?
Also, appreciate the heads up on the 1 Uf film capacitor. I have no idea how to connect that, but can YouTube it. On that note, I also saw these on Amazon, are they necessary? Or would it be redundant?
https://a.co/d/0hf2SN3
Is the 3.5 mm jack on your bluetooth speaker a stereo headphone output or a stereo line level output?
Neither would power a super tweeter directly, and an externally powered amplifier would be required.
P.S. Each of those "Bass Blockers" to which you linked would let too large a proportion of the low frequencies through for use with a supertweeter.
You need a pair of these (one for each stereo channel if you use two super tweeters):
https://www.parts-express.com/Dayto...0V-Polypropylene-Capacitor-027-410?quantity=1
For experimental purposes, you could also order 2.2 uF capacitors which will better let you hear if the super tweeters are actually working!
https://www.parts-express.com/Dayto...0V-Polypropylene-Capacitor-027-415?quantity=1
P.P.S. A single capacitor is simply wired in series (in line) with the positive terminal of the super tweeter (see the diagrams in the Fostex link I gave you).
I must caution you that I do not regard this as a fruitful avenue to pursue for your stated purposes, but am happy to supply the information as part of your ongoing audio education! 😀
Neither would power a super tweeter directly, and an externally powered amplifier would be required.
P.S. Each of those "Bass Blockers" to which you linked would let too large a proportion of the low frequencies through for use with a supertweeter.
You need a pair of these (one for each stereo channel if you use two super tweeters):
https://www.parts-express.com/Dayto...0V-Polypropylene-Capacitor-027-410?quantity=1
For experimental purposes, you could also order 2.2 uF capacitors which will better let you hear if the super tweeters are actually working!
https://www.parts-express.com/Dayto...0V-Polypropylene-Capacitor-027-415?quantity=1
P.P.S. A single capacitor is simply wired in series (in line) with the positive terminal of the super tweeter (see the diagrams in the Fostex link I gave you).
I must caution you that I do not regard this as a fruitful avenue to pursue for your stated purposes, but am happy to supply the information as part of your ongoing audio education! 😀
Haha! I appreciate the ‘fruitful avenue vs. audio education’ disclaimer! That’s honestly all I’m looking for the majority of the time I try various DIY activities…. The opportunity to learn without much of an expectation of a great outcome.
But I do like to come talk to the Pros for a minute before starting just to make sure I don’t blow my house up or something.
Final 2 questions, and I think you all have given me enough info to start playing around:
1). For an externally powered amplifier on a super tweeter — is there one that is small/portable enough that I could carry with the Bluetooth speaker and not be too cumbersome? Also, it would be used where there is no electricity, so not sure if there is a small one that would drive the tweeter but be able to run off of a lithium high mAh power source of some sort?
2). If I were to purchase a set of these as a cheaper starting point as an experiment, same info still applies I would assume as it pertains to the need for an amplifier, etc? And still run the capacitors on each positive term?
https://a.co/d/ianVOtG
In regards to the 3.5mm port, I’m not quite sure on the answer to that. It just says “Aux”.
But I do like to come talk to the Pros for a minute before starting just to make sure I don’t blow my house up or something.
Final 2 questions, and I think you all have given me enough info to start playing around:
1). For an externally powered amplifier on a super tweeter — is there one that is small/portable enough that I could carry with the Bluetooth speaker and not be too cumbersome? Also, it would be used where there is no electricity, so not sure if there is a small one that would drive the tweeter but be able to run off of a lithium high mAh power source of some sort?
2). If I were to purchase a set of these as a cheaper starting point as an experiment, same info still applies I would assume as it pertains to the need for an amplifier, etc? And still run the capacitors on each positive term?
https://a.co/d/ianVOtG
In regards to the 3.5mm port, I’m not quite sure on the answer to that. It just says “Aux”.
It just says “Aux”.
Then it is an input socket, not an output socket, and of no use for your purpose.
EDIT: Which makes your two questions moot!
Some quick searching shows a piezo tweeter may work. They can often be run without a capacitor.
This came up in a thread for a hi-fi project.
https://www.diyaudio.com/community/...super-tweeter-piezo-tweeter-revisited.399363/
This came up in a thread for a hi-fi project.
https://www.diyaudio.com/community/...super-tweeter-piezo-tweeter-revisited.399363/
dunno - do you have a device now and if so what is it's rated power output?
Piezoelectric tweeters are high impedance devices and the old Motorola KSN1005 and KSN 1016 looked basically like a 0.16uF capacitor IIRC. By using a stepup transformer and Zobel network one can obtain around 103dB output at one meter with 2.83V ("1 watt into 8 ohm load" a high pass network would be used.= just a 1uF cap if generating UHF.
Do the coyotes really mind that kind of noise ?
Kemo makes a self contained ultrasonic module which is reasonbly priced - I'm not sure of its real output. You could use a bank of piezo tweeters (make sure they really "go up high enough" in series /parallel to milk the little Kemo unit.
I ran that unit with a pair of decent KSN1005 clones - I don't think it bothered a dog - nor my cats which it was meant to protect - but a young male UPS driver heard it 75 feet away ....
https://www.kemo-electronic.de/en/Car/Modules/M048N-Ultrasonic-Generator.php
Its $20 at Ebay - like to have one myself but $20 is big money these days
Piezoelectric tweeters are high impedance devices and the old Motorola KSN1005 and KSN 1016 looked basically like a 0.16uF capacitor IIRC. By using a stepup transformer and Zobel network one can obtain around 103dB output at one meter with 2.83V ("1 watt into 8 ohm load" a high pass network would be used.= just a 1uF cap if generating UHF.
Do the coyotes really mind that kind of noise ?
Kemo makes a self contained ultrasonic module which is reasonbly priced - I'm not sure of its real output. You could use a bank of piezo tweeters (make sure they really "go up high enough" in series /parallel to milk the little Kemo unit.
I ran that unit with a pair of decent KSN1005 clones - I don't think it bothered a dog - nor my cats which it was meant to protect - but a young male UPS driver heard it 75 feet away ....
https://www.kemo-electronic.de/en/Car/Modules/M048N-Ultrasonic-Generator.php
Its $20 at Ebay - like to have one myself but $20 is big money these days
Yes, but unless the source recording/playback contains sound above 20Khz, there is nothing there to amplify that high.My question is this: Is it possible to do a DIY high-end tweeter that is either powered by the 3.5mm Jack, or could be powered by an external battery/amp of some sort?
And even if it does, and you have a tweeter that can produce 120dB at one meter above 20kHz, in addition to the inverse distance loss of 6dB per doubling of distance (-30dB at about 100 ft, 31 meters) there is additional high frequency absorption, another -18 to -34 dB in the 20kHz to 40kHz range.
Unless the coyotes are within near range and in line with the tweeter, the VHF won't make a difference.
http://www.sengpielaudio.com/calculator-distance.htm
All of this is great info. I definitely understand the device driving the tweeter needs to be able the deliver the frequency/output I expect the tweeter to play.
I guess I should simplify it a little bit and just say I want an external speaker that can output the clearest/highest-pitched tones that my device is capable of outputting. And possibly have room for growth so if I find a device that can output 40k hz, I’ll already have a spare external tweeter.
As I mentioned, it needs to plug into a 3.5mm Jack, and either be powered by the device — or able to be powered by a portable usb lithium battery / mini amp.
And I definitely don’t expect 130dB or anything like that, dogs have incredibly strong hearing, and the primary speaker is loud… I just want to add some additional clarity to the highest pitched sounds.
(Think about a squeaker toy you have for dogs, the higher-pitched it is, the more the dogs usually freak out.)
In regards to the AUX port, that is on my regular household bluetooth speaker…. so appreciate the heads up on that essentially being a ‘line-in.’ My coyote caller has an external speaker 3.5mm that is definitely meant to add an external speaker.
I guess I should simplify it a little bit and just say I want an external speaker that can output the clearest/highest-pitched tones that my device is capable of outputting. And possibly have room for growth so if I find a device that can output 40k hz, I’ll already have a spare external tweeter.
As I mentioned, it needs to plug into a 3.5mm Jack, and either be powered by the device — or able to be powered by a portable usb lithium battery / mini amp.
And I definitely don’t expect 130dB or anything like that, dogs have incredibly strong hearing, and the primary speaker is loud… I just want to add some additional clarity to the highest pitched sounds.
(Think about a squeaker toy you have for dogs, the higher-pitched it is, the more the dogs usually freak out.)
In regards to the AUX port, that is on my regular household bluetooth speaker…. so appreciate the heads up on that essentially being a ‘line-in.’ My coyote caller has an external speaker 3.5mm that is definitely meant to add an external speaker.
Is there any research into what sounds coyotes actually respond to?
The "Ext Speaker" jack may be just line level- it would be unusual to use a 3.5mm jack for high level speaker output. You can verify what it is by plugging in an external speaker, if it is not nearly as loud as the built in speakers, an amp (and crossover) will be required to drive additional tweeters.All of this is great info. I definitely understand the device driving the tweeter needs to be able the deliver the frequency/output I expect the tweeter to play.
I guess I should simplify it a little bit and just say I want an external speaker that can output the clearest/highest-pitched tones that my device is capable of outputting.
My coyote caller has an external speaker 3.5mm that is definitely meant to add an external speaker.
It is also unlikely that the built in coyote caller tweeter does not already cover the range of the playback sounds.
@PeteMcK Great question…. There is research into what frequencies they hear at whereas humans don’t (think dog whistle)….
So while the research to actual responses of “educated” coyotes (coyotes that will not respond to lesser quality, lower frequencies because they can seemingly tell its not natural) is still primarily antecdotal, there is a company bringing to market an “ultrasonic” coyote caller…. Unfortunately it’s $2,000.
I was just trying to enhance and clean up the highs, maybe make them a bit louder, on my existing call.
https://burnhambrothers.com/
So while the research to actual responses of “educated” coyotes (coyotes that will not respond to lesser quality, lower frequencies because they can seemingly tell its not natural) is still primarily antecdotal, there is a company bringing to market an “ultrasonic” coyote caller…. Unfortunately it’s $2,000.
I was just trying to enhance and clean up the highs, maybe make them a bit louder, on my existing call.
https://burnhambrothers.com/
Attachments
Even "uneducated" coyotes will be able to hear the location of the loudspeakers in the coyote caller and quickly determine that there is no corresponding activity from the call area, no scent or trace of prey.
Unless you use the same driver and crossover elements, an additional tweeter's output would not likely be in-phase with the first tweeter, which will cause an unnatural sound (comb filtering) as the distance from the caller to the coyote changes.
An extended unnatural sounding frequency range might educate "uneducated" coyotes faster that the location of the call is a device, not prey.
Unless you use the same driver and crossover elements, an additional tweeter's output would not likely be in-phase with the first tweeter, which will cause an unnatural sound (comb filtering) as the distance from the caller to the coyote changes.
An extended unnatural sounding frequency range might educate "uneducated" coyotes faster that the location of the call is a device, not prey.
The same driver/crossover elements type of discussion is what I was here to learn about, and obviously can’t understand if connecting an external tweeter with a film capacitor into the line would produce improved or louder high frequencies.
On the tricking of the coyotes outside of the audio alone, that’s certainly not a question for an audio expert forum. That portion would be where said audio expert would come to me for the education.
On the tricking of the coyotes outside of the audio alone, that’s certainly not a question for an audio expert forum. That portion would be where said audio expert would come to me for the education.
Speaking as a hunter (though this year a completely unsuccessful one 🙁), I am skeptical that a change in the electronic caller will improve your hunting. More likely, the coyotes clever, and have figured out that they are being hunted, and have gotten much more cautious. A new caller might help for a few days in the field, but they will soon adjust their behavior again.We have a coyote problem, and they used to come into the caller periodically, but I think they’ve learned to recognize the “speaker” sound, and I’ve read if you can get cleaner “high-pitched” realistic sound from a 20,000-40,000 hz tweeter, it can trigger them more easily.
@hifijim Oh, there’s 100% chance it’d be a temp fix and then they’d adjust after 1-2 times max at each location.
But you have to keep in mind (given my lack of education on making the high frequency louder/crisper), I was only here hoping to see how I could possibly do that for $30-50 or so.
If I could increase my odds at every location for 1-2 stands, it’d be well worth it. And if not…. It’d be money well spent learning that it was not a successful adjustment, and then back to the drawing board.
But you have to keep in mind (given my lack of education on making the high frequency louder/crisper), I was only here hoping to see how I could possibly do that for $30-50 or so.
If I could increase my odds at every location for 1-2 stands, it’d be well worth it. And if not…. It’d be money well spent learning that it was not a successful adjustment, and then back to the drawing board.
- Home
- Loudspeakers
- Multi-Way
- Easy to build tweeter/horn for coyote caller