Home - Contact Us - Advertise - Rules - diyAudio Store - Sponsors - Archive - Privacy Statement - Terms of Service - Top - Opt-out policy vBulletin Optimisation provided by is this plug made of a sponge type material or something harder? Overall the compromises and questionable improvement of horizontal dispersion of constant directivity horns do not match the original circular exponential horn acoustical principles. This level exceeds many rock concerts. http://fallbrookpcusersgroup.org/compression-driver/piezo-tweeter-vs-compression-driver.html
On one hand you have a delicate driver suited to medium to small rooms and nearfield. Triad uses a horn loaded AMT tweeter in the top of the line cinema reference speaker. A tweeter radiates sound more or less directly into the air. Interestingly, in this work Smith's derivation is confirmed using Finite Element Analysis, a luxury that was unavailable to Smith. https://en.wikipedia.org/wiki/Compression_driver
When too much power is dissipated by the driver, the circuit breaker interrupts the flow of electric current. The diaphragm vibrates air just like an exposed dome tweeter. The silver is the anular diaphram Widget was talking about. The nose clamps the inner ring.
Phase/Polarity is relative. In this case a phase plug is needed and it's generally not as effective as using a CD which is designed from the outset for horns or waveguides. Sent from my desktop computer using a keyboard 17th April 2009, 02:55 PM #10 doug20 diyAudio Member Join Date: Mar 2009 That is true but the SPL Compression Drivers For Sale The diaphragm is very fragile and about 20 to 30 microns thick.
Triad uses a horn loaded AMT tweeter in the top of the line cinema reference speaker. I also believe I've read about it in a JBL Tech bulletin, but I may be making that up. Modern drivers are now less concerned with how much the phase plug can increase efficiency and more with improving compression driver extension and response smoothness. The main physical difference is that the dome is coupled to an exit tube via a phase plug where the dome is large than the exit.
Verdict: 100 db is probably the useful limit. Horn Driver Speaker I have read many threads on the compression drivers like the recent "4344MKII and 275ND problem" and ones on how you should not test there ploarity with a battery etc. The formula below shows that either increasing the modulus (E) or lowering the density (ρ)will raise the speed of sound in the material. Changing shape from circular is a compromise that reduces efficiency and causes lobe distortion.
It has to do with cone (dome) break up modes. http://www.fohonline.com/home/73-speaking-of-speakers/7799-understanding-compression-drivers-phase-plugs.html Compression drivers vary all over the map and some are very good, and others are utter crap. Compression Driver Vs Piezo My question is on the ring radiator series - I've never had one open, but from pics I've seen of the diaphragm it looks like there's a hole in the center, Midrange Compression Driver Reply With Quote 10-22-2004,12:28 AM #6 jarrods View Profile View Forum Posts Senior Member Join Date Feb 2004 Location Australia Posts 176 also....
like JBL, Tannoy, Meyer, Electrovoice, Danley, Yorkville, QSC, Behringer, Mackie... check over here Repairs Contact Tech Support Return Policy Free Shipping Policy Shipping & Delivery Times SweetCare Remote All Help Topics inSync June 13, 2017 Search All inSync Search News Search Videos Search Product Rob Attached Images Last edited by Robh3606; 10-21-2004 at 09:05 PM. When an audio signal is applied to stators through step-up transformer, the bias voltage is modulated and the diaphragm vibrates between stators driven by electrostatic force. Compression Driver Horn Design
Piano music sounds like piano music through them, which is something that cannot be said about most speakers in this particular price bracket. Project from the Diaphragm The production of sound by a compression driver begins when the voice coil moves and transfers this movement to the compression driver’s diaphragm. Where speakers can be redundant (i.e. his comment is here The alnico and ferrite are basically the same except for the throat on the drivers is longer.
Powered by vBulletin Version 4.2.2 Copyright © 2017 vBulletin Solutions, Inc. Jbl Compression Driver Protection capacitors must be placed in series between the amplifier and compression driver and compression tweeter. When signal current is passed it starts oscillating in the plane of the diaphragm with folds contracting and expanding and thus squeezing air in and out.
Haha! The DIY community has embraced horns for audiophiles for many years. better than black. Compression Driver Protection So you have the best of both worlds - the extension of a small light piston and the power and efficiency of a very large transducer.
For instance, is the wavefront from the compression driver flat (i.e., plane), or does it have some curvature? Some people like compression/horn drivers, some don't. This stands in contrast to professional cone drivers, which have largely surpassed the world of hi fidelity loudspeaker drivers. http://fallbrookpcusersgroup.org/compression-driver/compression-driver-wharfedale.html Main Website Library Photo Gallery Advanced Search Forum Lansing Product Forums (JBL, Altec, LMCo) Lansing Product Technical Help Compression drivers; how do they work?
The Journal of the Audio Engineering Society. 26: 139–144. List of DIY speaker designs Most audio enthusiasts are smart enough to let someone else do the design work. They are also a little more difficult to integra... Dome Villchur's invention is still the most common tweeter type; probably about 95 percent of all speaker systems use dome tweeters.
The sound was amazing, loved the tweeter sound but not much on the bottom end.