Compression driver vs dome tweeter!
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- čas přidán 28. 03. 2021
- Dear Viewer, the link to the coffee-station, or, as I could call it, the Tea-house is right here:
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This is a way to support my channel in a hassle-free manner, and you can contribute as low as 2$ if you feel compelled. If so, I welcome your support with a warm welcome, it goes a long way to allow me to continue with this channel in the future! All your support will go towards improving this channel, and towards the tweaks and components I explore on the channel.
János
Content: How are they built, how do they work, where is the diaphragm?
Dear Viewer, the link to the coffee-station, or, as I could call it, the Tea-house is right here:
www.buymeacoffee.com/RealWorldAudio
This is a way to support my channel in a hassle-free manner, and you can contribute as low as 2$ if you feel compelled. If so, I welcome your support with a warm welcome, it goes a long way to allow me to continue with this channel in the future! All your support will go towards improving this channel, and towards the tweaks and components I explore on the channel.
János
Yoo is that compression driver for your city’s alarm lol
Tsunami alert ; )
Ty! Great explanation
You're welcome! 🎶👍👍
what an idea, now i am goig to convert my spare lying woofers & just using the dust cap making them stiff & seeing how they sound, searching for good tweeters since ages.
Have fun, cheers! ; ) Janos
Great vid, thanks for the info. Im doing my first build and am just learning about compression drivers
Glad to help! Good luck with your first build! 90% of the success will be dependent of crossover optimization. Also, if it needs a change, try the crossover before starting rolling drivers ;
now I get it...
thank you so much for the vid!
The Compression Chamber reminds me of blastings/detonations in big saltmines... (open Your mouth, quickly!!)
Fun aside, the issue of the dome tweeter is its small surface. Electrostatic loudspeakers can produce efficient high soundwaves, because it there are huge surfaces combined with extreme small moving masses (foil).
😍😍😍😁. Yes, the small driver's issue is the small surface.... we can use the BR cabinet to extend the low end, easy to get HF, but midbass is very very hard to get, that's why they almost always sound lean, even when we can extend them low...
i use 1a20 kinap compression driver without horns. it was a lucky coincidence. it is also retrofitted with a paper dome, instead of polypropylene one. it also matches ver very well with 25gdn-4 12 inch kinap midbass speaker on a larger open baffle. my amp is single ended tube with select vintage components from the 50s.one very weird thing i have, but that i can really really recommend is a large final capacitor, the last one before the tubes. mine is 8kvar i think, made in the 60s. it weighs 20kg. try and see if you wish. hook it up first thing before the tubes of course, if you will decide to try this. i really enjoy your channel!
Please post a video of your paper diaphragm Kinap drivers. I will check your channel. Thanks
Fantastic explanation! Thank you!
Please use a tripod to stabilize the image.
I get a little motion sick watching.
Thank you! I got an image stabilized lens, I hope that will help. :)
Why do some titanium tweeters hurt the ear and cause listening fatigue? Is it certain frequencies or other reason? My dad’s AR speakers are terribly fatiguing and some older JBL car speakers were terrible!
Thanks for the video.
For car , dome tweeters or flush mount tweeters? Which type of tweeters are best for car audio...plz.
Hi Jani, it really depends on what kind of sound you want in the car... my preference is a balanced natural sound, similar to what I get in my home system. By far my favorite for cars is full range paper cone drivers. 6x9 ovals with whizzer cone... Granted, they do not play extra loud, and it's ideal for in town driving and listening while you are parked. For super loud listening they are not the way to go, and I do not have preferences there as I never experimented with such setups. Having a car stereo blast to 110-130dB over the 80dB background noise of a highway ride is a very bad idea... very bad hearing damage, very fast...
I should make a few videos on a few thing one can do to elevate the level of experience. A little tweak on the battery that significantly improves audio quality - even those smallish 6x9 paper cone drivers will seem to go an octave lower, and in addition, even the car performance improves! (Engine runs smoother, more power and better mileage!)
@@realworldaudio thank you...
would be A LOT helpfull if you share in the description of the video, link sources you used, to help us reach that same info! Thankl you!
Thank you for the suggestion! Main source of my knowledge was my mentor, Stu Ono. Comparison between dome tweeter technology and compression driver, the answer is here, with stats: czcams.com/video/IV2AFQCujco/video.html Muito obrigado por pergunta!
Other than efficiency, do compression driver offer better sound quality?
Depends highly on the actual driver. There are plenty of bad sounding compression drivers just the same bad sounding tweeters using other technologies. Compression driver has the advantage to produce a wide range without distortion. Once you get used to a good compression driver, it is almost impossible to go back to tweeters as they have absolutely no headroom compared to CDs. Even the best tweeters start to compress by 90dB SPL. Compression drivers have about 20-30dB extra headroom. A normal tweeter (even a high quality one) takes off your head at 100dB (listening fatigue), while a good CD will provide 110-120dB without fatigue.
The caveat with CDs is that hey need extremely good HF from the amplifier. The slightest issues will loom enormous when played at 110-120dB.
To this day, by far the "best to my ears" is compression driver. The worst highs I heard was also compression driver.... Do, I'd say the CD covers the entire quality range, and one needs to understand equipment synergy and systems development at the highest level to benefit. Going for CDs blindly will likely get one pure hell.
so is a front bass horn trying to do the same thing for bass as a compression driver is for mid and trebble
Essentially yes, the goal is better energy transfer from moving element to air. ;
Sir thank you for nice video..
Can I use pro compression (horn)driver for home hifi .. with best class design crossover?? Plz reply 🙏
Yes, you can use a pro compression driver. Just adjust the level to match the mid/woofer complement, and I suggest to start with a second order high pass filter. For crossovers, try to go as low order as possible for most natural response, or go higher order for most sculpted response. Depends how low you are bringing the compression driver down, if it's HF duty alone then you can get away with first order high pass, but if you go down to cover the midrange as well, then 2nd order (or higher) is required.
@@realworldaudio
Thank you very much sir....ur prompt reply.. I'm already using but not getting results my CD (1) beyma cp755ti (2) midrange faital pro 10fe 200 & for the bass (3) beyma 18g500 & cabinet vol 339ltrs for mid chamber 34ltrs sealed rest of 305ltrs for rest of crossover oder is 2nd. I can share pictures with you... my whatsapp number is +919898043178 my name is Tej from India 🇮🇳
Once again thank you...
@@tejkarangehlot4741 Tejkaran, thank you for sharing! I have not played around with these drivers, so cannot give you a specific advice. However, will make in the next few days a video with advice to help with the crossover design, and to bring them to work together. I think you have good drivers here, with great potential!
@@realworldaudio
Yes sir thank you.. I already subscribed ur Chanel...I will get all notifications...
Like ur videos
@@tejkarangehlot4741 Namaste Tejkaran, videos coming with preliminary analysis on your Beyma and Faital drivers! Can you send an email with the pictures and cabinet details, and crossover parts details to my email? arcturus127 at gmail.com
Do you know of any commercial or DIY examples of hornless compression drivers? I've searched for it , but never found any. Would you lose a lot of the lower frequency support or will it just be the directionality? It almost sounds like a good idea to skip the horns and try using the compression drivers as is.
It appears I am the pioneer in this front. So far I have not heard of anyone else (company or DIY) experimenting with hornless compression drivers down into midrange. My buddy in Australia started experimenting with CD in the 10+kHz range, and he gave me the idea to try it. I was going to build my horn, and until then I just hooked it up hornless, without EQ for crossover to compensate for lack of horn. It gave me a natural ambient sound I never heard before. I prefer to using horns (and the shelving EQ you need with them), and some of my audio friends also far prefer it to any horn they heard, but there are others who preferred the traditional horn sound with the added upper midrange hyper-resolution (and fatigue).
@@realworldaudio very interesting! And fun you had such success. My horn buddies didn't think so much about it when I had the idea. Now I will definitely try it!
Could a better analogy be that if you were trying to punch the air and trying to blow a candle out with your punching? The air molecules will just conform to your fist and not transmit the pressure to the candle across the room?
Exactly, superb analogy! ; ).
@@realworldaudio Can you expand the analogy? How does a compression driver/horn play into the air punch analogy?
@@nikonmikon8915 Well, punching the air is exactly what an unaided driver is doing at low frequencies: it moves forward, while the majority of the air mass in front of it fails to continue the motion in the same direction - this analogy starts and ends there. If we were to add a funnel/horn to our fist, then the air would not whistle past our fist, the gas molecules get trapped in the funnel. When our fist stops moving, the accumulated pressure in the funnel is released along the path of the punch, and is able to extinguish the candle. The horn on the loudspeaker driver does the same thing: funnels the air motion, so it can transmit energy more effectively.
@@realworldaudio awesome explanation! thank you
This is rubbish. The dust cap on a woofer has little to no bearing on the sound. It is designed to keep debris from getting into the magnet and coil structure. On the other hand, the dome on the tweeter dictates the dispersion of the sound.
Driver manufacturers know that dust caps are an important element of the sonic signature of the driver, even woofers. Try it out for yourself, different shape dust caps. (Convex / concave, flat, phase plug, vented dust cap, different materials, etc.)
all tweeter works and create sound. its not like punching the water and causing ripple like you said. I think you don't know what you are taking about or your example or explanation is totally wrong.
I am using comparisons, sorry you did not get that. Thanks for watching! If you have better comparisons to illustrate the difference between what compression drivers and dome drivers to to wave propagation in a simple manner, you are welcome to share! Thank you, Janos
He said it's not the most efficient way, he didn't say dome tweeter don't create sound.
His example is correct and fitting. He is talking about energy loss due to inefficient coupling between two materials of different densities (diaphragm and air). Sorry if it flies way above your head. It's engineering.