beaver Posted September 22, 2015 Author Report Share Posted September 22, 2015 Smith horna sa visokotoncem EMINENCE ASD 1001 kompresioni drajver.....grafikon.... ima skretnicu na 18db na 2200Hz rezne frekvencije. Quote Link to comment Share on other sites More sharing options...
prophet Posted September 22, 2015 Report Share Posted September 22, 2015 To je ocigledno 500Hz horna i tesko ces da ubijes taj deo od 500Hz do reza. Peak na 110Hz je verovatno od prostorije. Quote Link to comment Share on other sites More sharing options...
beaver Posted September 22, 2015 Author Report Share Posted September 22, 2015 i za kraj zbirni grafikon SAL BAS + TWEETER EMINENCE HORN SMITH.....1m/1w Quote Link to comment Share on other sites More sharing options...
beaver Posted September 22, 2015 Author Report Share Posted September 22, 2015 Eto to je za sad istrazivanje se nastavlja.... Quote Link to comment Share on other sites More sharing options...
beaver Posted February 25, 2016 Author Report Share Posted February 25, 2016 Quote Link to comment Share on other sites More sharing options...
beaver Posted March 25, 2016 Author Report Share Posted March 25, 2016 A Transmission Line Subwoofer Designed & Built by Yves Mattei This design is a single fold transmission line using a 330mm (12") Audax driver (HD 33 S 66). The port loads out the back. Very little stuffing is used. It as a SubWoofer in a Home Theater System with an active 4th order low pass at 70 Hz. Since the cross-over is low, upper resonnances ( > 150 Hz ) are not a big problem. This line is not optimized for higher crossover frequencies. Results: From 50 Hz to 100 Hz driver and terminus are in phase (+/-10°) The - 3dB point is near 45 Hz At the Fr of the line (40 Hz) driver and terminus are 90° out of phase A Transmission Line Subwoofer Designed & Built by Yves Mattei This design is a single fold transmission line using a 330mm (12") Audax driver (HD 33 S 66). The port loads out the back. Very little stuffing is used. It as a SubWoofer in a Home Theater System with an active 4th order low pass at 70 Hz. Since the cross-over is low, upper resonnances ( > 150 Hz ) are not a big problem. This line is not optimized for higher crossover frequencies. Results: From 50 Hz to 100 Hz driver and terminus are in phase (+/-10°) The - 3dB point is near 45 Hz At the Fr of the line (40 Hz) driver and terminus are 90° out of phase Below 40 Hz they are out of phase The stuffing could have be better optimised, reducing the effect of the null at 140 Hz. If I were to do it again I'd make the terminus a bit larger. (or use the line for a 10"/ed) Since originally putting this project together more stuffing has been added making this a true TL. The preliminary results are that the stuffing improves the performance of the speaker. (details as they become available/ed) Line Configuration Audax PR 330 M0* Physical length 1.6 m Sd 538 cm^2 Physical fs at 1/4 wl 54 Hz Vas 264 liters Acoustic 1/4 wl (measured) 2.13 m/40 Hz Cms 6.5 e-4 N/m Measured c' 0.75c Cas 1.9 e-6m^5/N (speed of sound in the line) Mms 52 g Begining cross section 838 cm^2 Fs 27 Hz Terminus section 262 cm^2 Bl 13.6 N/A Taper 1.6 : 0.5 Sd Re 5.8 Ohms First odd harmonic 140 Hz Qms 6.7 (null of driver, max of terminus) Qes 0.28 Max of terminus 90 Hz Qts 0.27 (level of the terminus is 3 dB below the driver ) Pmax 150 Watts Stuffing 50 mm Rockwool Xmax +/-4 mm Plans * Audax HD 33 S 66 replaced by PR 330 M0 Notes: Testing: Monacor MCE2000 electret capsule mounted in an amplifer g=100 that I built. I used a sinewave generator and a oscilloscope. The data on the phase was made using comparative measures with the dual trace scope [ <-- Back to Projects | Yves TL | Plans | Home Theater ] Below 40 Hz they are out of phase The stuffing could have be better optimised, reducing the effect of the null at 140 Hz. If I were to do it again I'd make the terminus a bit larger. (or use the line for a 10"/ed) Since originally putting this project together more stuffing has been added making this a true TL. The preliminary results are that the stuffing improves the performance of the speaker. (details as they become available/ed) Line Configuration Audax PR 330 M0* Physical length 1.6 m Sd 538 cm^2 Physical fs at 1/4 wl 54 Hz Vas 264 liters Acoustic 1/4 wl (measured) 2.13 m/40 Hz Cms 6.5 e-4 N/m Measured c' 0.75c Cas 1.9 e-6m^5/N (speed of sound in the line) Mms 52 g Begining cross section 838 cm^2 Fs 27 Hz Terminus section 262 cm^2 Bl 13.6 N/A Taper 1.6 : 0.5 Sd Re 5.8 Ohms First odd harmonic 140 Hz Qms 6.7 (null of driver, max of terminus) Qes 0.28 Max of terminus 90 Hz Qts 0.27 (level of the terminus is 3 dB below the driver ) Pmax 150 Watts Stuffing 50 mm Rockwool Xmax +/-4 mm Plans * Audax HD 33 S 66 replaced by PR 330 M0 Notes: Testing: Monacor MCE2000 electret capsule mounted in an amplifer g=100 that I built. I used a sinewave generator and a oscilloscope. The data on the phase was made using comparative measures with the dual trace scope [ <-- Back to Projects | Yves TL | Plans | Home Theater ] Quote Link to comment Share on other sites More sharing options...
beaver Posted March 25, 2016 Author Report Share Posted March 25, 2016 Tako da je fuga mk 3 fakticki This design is a single fold transmission line. Quote Link to comment Share on other sites More sharing options...
beaver Posted March 25, 2016 Author Report Share Posted March 25, 2016 AKo moze mala pomoc oko izbora drajvera za bas FUGA MK 3 hvala. Quote Link to comment Share on other sites More sharing options...
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