I have 1 wlldse 12in but I have 2 sundown u6.5. About to get powered by a d4s jp8. I have 15in height 36in width 18in depth, what would you recommend for a rangy but loudd build. Any little thing helps, appreciate it 🤝
To me, sealed subwoofers sound much better than ported, but they need lots of extra power. I highly recommend sealed subwoofers over ported if you can have the extra power.
So, I was a my first Bass show (idk what they're called). A guy had a box that he said was switchable from 2,4 and 6th order box with PVC pipe and some ball valves. The ball valves let him switch between them. How does one design something like that?
I have an idea but i ask myself if it would work... Would it be possible to use smaller tesla valves in front loaded horn subs for air exchange and cooling of the speaker and chamber?
People looking for a home stereo subwoofer would do well to build a "dual subwoofer" like they would for a car, but plan ahead so you can wire the two subs to create 8 ohms. To be honest, I think driving passive subwoofers sound better than the powered subwoofers. More "musical" in nature. And you'll save yourself some money, or get a better sub for the same price.
I think with Vas it's more equivalent to a rigid plunger the same surface area as the Sd of the driver - the projected area of the cone perpendicular to its in and out motion. Atmospheric pressure air usually needs about 0.01 bar of this pressure per % compression for small close to linear compressions. The Vas (if measured at sea level) is dependent only on suspension compliance Cms and area Sd. Cms is the number of millimetres a cone will move off centre with a Newton of force on it.
You inverse your sub when the enclose is too small because you remove the magnet and basket out of the box 📦 makes the box larger I prefer inverted subs I am testing out my dbs both way problem is I maxed out my meter at 130 so idk 🤷
This explains why I had a 1985 Cadillac Fleetwood and everything was electric including the trunk lid. I installed 2 subs in a sealed enclosure in the trunk. Bad thing was when I shut the trunk it killed ALL the low frequency. But unlock the trunk and the bass would explode.... So for a little while there I had to ride around with the lid open and take railroad tracks slowly to keep the lid from flying up in the air 😂😂.... {The things I'd go through just to hear that bass... I'm older now and don't really care anymore 😂}
I’ve seen dual 18” 6th order pro audio subs that contain 2 drivers facing each other in a sort of “loading wall” like you show here. Basically, there’s a port on each side, then this big open almost horn-like mouth in the middle. (It slightly tapers out, but I wouldn’t consider it a horn.) That design has the most SPL of any subwoofer I’ve heard.
Starting my journey into audio. What kind of classes would I look at to begin learning this stuff? Open to books worth reading but I have a hard time doing strictly online learning. I do better in person. Audio engineering is such a broad term. Is there anywhere to take courses to learn this?
καλησπέρα σας να σας κάνω μία ερώτηση αν το μεγάφωνο των τοποθετούσατε ανάποδα ο μαγνήτης έξω από την κούτα είναι σωστό ή λάθος ....ευχαριστώ πολύ εκ των προτέρων
The Tesla Valve Tesla’s valvular conduit is mostly misunderstood as presented in much of literature and most media such as RU-vid in recent years. This device cannot be called a valve if used as an inline flow resistor. It is usually but erroneously demonstrated as a ‘one way valve’ with fluid, be it gas or liquid where the pressure drop is considerably larger in one direction flow than in the opposite. To use electrical analogy, this is not a diode but a resistor, therefore, the word valve is inappropriate. The expected ‘valve’ action (check or non-return valve) is unimpressive if anything. Tesla originally construed his ‘valvular conduit for gas flow, and in fact specifically for gas under pulsating pressure. In this application, it may be called a ‘valve’ or a ‘fluid diode’. Gas under hight frequency pulsating pressure takes advantage of this clever topology and is free to flow in one direction with relatively negligible losses and practically no backflow. With careful design, Tesla’s valvular conduit is a true pulsating gas diode with no moving parts. An illustrative application would be an IC engine exhaust manifold. It should also be noted that this valve will have optimal performance at a single design point, i.e., temperature, fluid type, volumetric flow and frequency, so that any change of a parameter will have it operating off optimum. As for making a modern design, I imagine a cut and try method with FEA would be used. Otherwise, well done, interesting and informative video, thank you very much.
For me Xmax mostly depends on max THD. When you take a neo magnet and Ho frame with 3mm pole, you'll get a 1.5mm Xmax. Period. Otherwise this would be a tr.. driver. So, this layout is good for a highly efficient compression driver only. PS ...and for a car "audio" of course. Then you can mound this driver on a suspension and get 2 in 1: a dancing car and a loud "boooo"
Make sure you patent any ideas you design. You should design a new type of car amplifier like the Brazilian. Design new types of transformers as well.. you have 2 hears..starting now.
Nice video! Let me ask some question. How do you know how much XMax is in a driver under TS parameters measurement, let’s say with ARTA software. Of course that you cannot take the driver apart in order to have a look on the voice coil and measure it.! Is there any method you can point out? Or maybe same estimation? How does this value affect the TS parameters result I the measurement? Thank you!
