8/28/2023 0 Comments Motorola horn tweeter![]() ![]() At one stage Proac(!) even used a piezo in one of their domestic models but it was the direct radiator version of the popular horn. Some people press car repair "bog" around the back of the chassis to reduce vibrations. (can't quote the ref' on that but it was also JAES around 40 yrs ago or more!) That is why people do use a cross-over with these units despite its theoretical redundancy, see #2. I may also have seen work by a guy called Smith that demonstrates much improved impulse response from horns when used with appropriate cross-overs. Motorola Tweeter In Pro Audio Speaker Drivers & Horns All Auction Buy It Now 18 Results Brand Type Country/Region of Manufacture Compatible Brand Size Condition Buying Format Delivery Options All Filters Motorola Piezo Horn Speaker Tweeter Driver 2.25 X 2.25 Inch Mexico C 15.92 C 15. Efficiency: 94 dB SPL ( Sound Pressure Level) 2.83V Input 1Meter. Impedance: Appears as a 0.13 uF capacitor. Power Handling: 100 watts RMS / 125 watts MAXIMUM. Arranging for a cross-over that does attenuate frequencies below about 5kHz is useful. One of the most popular tweeters in the world Piezo element requires no crossover. I still am going to buy new sneakers, (they call them running shoes these days), and. My present day sneakers, bought at Xmas, are already running down but surprisingly, a memory foam insert bought at the Dollar Store is improving things immensely. There are some good sites that will fill out the details of using these units. I have plantar fasciitis and a heel spur. At the frequencies being considered the R dominates the capacitive impedance. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. as you would a resistor in normal circumstances.Īgain previous posters are correct in suggesting you bridge the unit with a resistor. On the other hand small capacitors in series do NOT reduce low frequencies but DO reduce overall levels. The R in series does not attenuate the overall level but instead produces a high frequency roll off. Posters are correct in saying that piezo is capacitive but that changes the traditional role of cross-over elements. I have the original paper by the MOTOROLA guy who produced the current crop of piezo published in The JAES some 40 yrs ago, Borst (or Brost?) I think. ![]()
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