beaver

AKo moze mala pomoc oko izbora drajvera za bas FUGA MK 3 hvala.

Tako da je fuga mk 3 fakticki This design is a single fold transmission line.

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 ]

HI FI AUDIO SAJAM HOTEL HOLIDAY INN 08.11.2014 NEKAD I SAD... UPOREDITE SA 2015 GODINOM

SLIKE SAJMA HOLIDEJ IN...2015

Eto to je za sad istrazivanje se nastavlja....

i za kraj zbirni grafikon SAL BAS + TWEETER EMINENCE HORN SMITH.....1m/1w

Smith horna sa visokotoncem EMINENCE ASD 1001 kompresioni drajver.....grafikon.... ima skretnicu na 18db na 2200Hz rezne frekvencije.

Noviteti iz zone eksperimenta za modifikaciju GRF TANNOY-A "BASS SAL ONLY" u kutiji grf-a izmeren je....bez skretnice...bass je sal sbx 2030/bk 08806_03_01.pdf 08806_03_02.pdf

InaÄe sam iz Beograda i obožavam horne tannoy ajoj

Ispilo sam se na ovom forumu 29.11. 2014 ali u svakom slucaju forum je fantazija tema i tema ima, nemogu sve ni proÄitati Å¡ta sve ima... Želim sve najbolje ljudima koji se bave audio tehnikom u svakom smislu

Srednjetonac je vezan u kontra - fazu u odnosu na bas ... grafikon spl-a. Nema promene na bolje Å¡to se tiÄe krive spl-a u donjim frekvencijskim granicama (sliÄan kao predhodni grafikonu). Inace po grafikonu se vidi da mora joÅ¡ da se utiÅ¡a srednjetonac zbog nivelacije glasnoće sa basom (ide L-PAD kolo na skretnicu tj. dva otpornika).

Bas je vezan u kontra - fazu u odnosu na srednjetonac ... grafikon spl-a

Bas je vezan u fazu sa srednjetoncem... grafikon spl-a Vidi se blagi porast basa izmedju frekvencijskih granica 40Hz - 70Hz (u odnosu na predhodne grafikone spl-a (podrazumevajući da su drajveri u kutiji))

Merenje SAL SBX 2030 u kutiji 1m/1w, program ARTA, sa spulnom od 13,2mH

SAL SBX 2030 bez kutije fabricko merenje

Merenje SAL SBX 2030 u kutiji 1m/1w, program ARTA, sa spulnom od 10,0mH

Merenje SAL SBX 2030 u kutiji 1m/1w, program ARTA, sa spulnom od 6,8mH

Merenje SAL SBX 2030 u kutiji 1m/1w, program ARTA, bez spulne - bez skretnice.

Treba da obavim dalja merenja sa mikrofonom, sta i kako se dobija sa postojećim stanjem. Inace autor napominje donju reznu frekvenciju basa od 125 Hz sa spulnom od 5,6mH za bas od 4 oma, inace kada se uzme bas od 8 oma ide spulna od 10mH. Pomeranjem rezne frekvencije preko 200Hz tog transmisionog tunela pocinje da stojeći talas pravi svaÅ¡ta neÅ¡to tako da se i pored stavljene Å¡pulne od 6,8mH Äuje bass mekan ali nema rasprostiranje kao kod horne...

Polako ljudi ovako ide dopuna propusta.... Spulna za bas je motana zicom od 1mm za vrednost od 6,8mH otpornosti od 2,14 ohm i druga spulna je za srednjetonsko podrucije od 1 mm za vrednost od 1mH otpornosti 1,1 ohm.

Link za skretnice.... PRORACUN VISESLOJNIH ZAVOJNICA ZA PASIVNE ZVUCNICKE SKRETNICE http://bas.elitesecurity.org/indexV.html

Spulna za bas je motana zicom od 1mm za vrednost od 6,8mH i druga spulna je za srednjetonsko podrucije od 1 mm za vrednost od 1mH. Program za izradu i simulaciju skretnica je korišćen pod nazivom X·over 3 Pro.....

Drugi prilog...