Port Passive
Port Passive
What is the best for the low-low and deep, a port or passive radiator?
I intend to a subwoofer home theater build and am looking for deep bass sound in general. Of these two options, one I may get this?
Speaker systems performance passive radiator fan and conventional speaker systems are essentially the same box. Passive-radiator system is Chairman of one type or variant speaker box ventilation. They closely follow the same design principles and methodology used for ventilation box loudspeaker and offer performance similar to their ventilation / home / SLR counterparts low. Drawings passive radiator box offer a greater extent NO Low frequency ventilation or similar designs speaker output. Passive radiator designs offer their own advantages and disadvantages of their breakdown / Home / bass reflex cousins. The advantages include the elimination of the color breakdown, the resonances of the vents, the sound of wind turbulence that can often result from inadequate ventilation and interior design (mechanical) noise that can result in vents or ports. Air vents correctly designed for low frequency enclosures require a minimum area of ventilation. The minimum vent area should be gradually increased in proportion direct increase in the displacement of the total volume and a decrease in the frequency canning. Also, for the common ventilation ducts or more large port design is the Wind zone, plus the length of the duct. As one can easily imagine the ducts long can - cause problems or difficulties in the design of speaker enclosures smaller. Passive radiators used instead channeled vents and ports to solve these problems. It is also important to remember that many drivers, if not all conventional coil movement vary greatly according to the publication of Thiele-Small parameters. Thus, based a manufacturer published Thiele Small parameters often creates difficulties when it comes to accurately adjust a vent or vents cash in an enclosure. The use of passive radiators greatly simplifies the process of adjusting the physical box. The disadvantages of standards is an enclosure passive radiator more pronounced low frequency roll-off loss which in turn results in slightly poorer transient performance, increased frequency cutoff and a slight increase overall system, ie, Q-sub-L, compared with their counterparts from the breakdown. The design has increased passive radiator, assigned to Hossbach Clarke and most importantly, effectively eliminates the disadvantages associated with the design of conventional passive radiator while offering better performance. The disadvantage of the increased passive radiator design is that you have to build their own enhanced passive radiator because there is no commercial off-the-shelf augmented passive radiators available. One of the most popular "vented subwoofer box designs is 2:1 passive-radiator design. Go on the Home Theater Shack forums and read the discussions and testing of various models and DIY subwoofer business. ####### ################# ######################## DiyAudio RESOURCES. com Wiki: http://www.diyaudio.com/wiki/index.php?page=types+of+subwoofer rate of meathod subwoofer anyone know to solve the operator to change my lower cabenet? [sic] http://answers.yahoo.com/question/index?qid=20080421141305AAdKp8f Home Theater Shack forums http://www.hometheatershack.com/forums/ - Passive radiators its new Creative http://www.hometheatershack.com/forums/diy-subwoofers/6268-new-passive-radiators-creative-sound . html? pp = 50 - 4 18 "5400 and the 8 persons" WOW! "Http: / / www.hometheatershack.com/forums/diy-subwoofers/9281-4-18-5400s-8-passives-wow.html?pp=50 - DIY TC Sounds LMS-5400 18 "+ 2x18" PR 200L * NEW * http://www.hometheatershack.com/forums/subwoofer-tests/8156-diy-tc-sounds-lms-5400-18-2x18-page -ranking-200l-new. html? pp = 50 - TC Sounds LMS-5400 18 "sealed 75L vs. 200L test http://www.hometheatershack.com/forums/subwoofer-tests/12195-tc-sounds-lms-5400-18-sealed-75l-vs- Special * 200l - Special test.html? pp = 50 - Audio Home Subwoofers - Subwoofer Tests - Fall 2007 http://www.hometheatershack.com/forums/home-audio-subwoofers/6656-subwoofer-tests-fall-2007-a.html?pp=50 Comments on "Earl Geddes acoustic design lever" http://www.audioroundtable.com/ProSpeakers/messages/188.html http://www.audioroundtable.com/ProSpeakers/messages/208.html http://www.audioroundtable.com/ProSpeakers/messages/209.html http://www.audioxpress.com/bksprods/products/bkaa68.htm GedLee LLC http://www.gedlee.com Loudspeaker Design Cookbook audioXpress (Old Colony) Speaker Reference Books Speaker Design and Construction http://www.audioxpress.com/bksprods/BKSLOUREF.htm http://docs.google.com/View?id=dhpmqnbb_8cqqcq2gx Resources (Note: The resources will be updated regularly) ################# ################## # A TECHNICAL RESOURCES analyzes the design of a system of loudspeaker phase UPS with a Drone Cone Nomura, Y. Kitamura, Z. IEEE Transactions on Audio and Electroacoustics October 1973, Volume 21, No. 5, pp. 397-407 ISSN: 0018-9278 http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=1162502 passive radiator systems loudspeaker Party 1: Analysis of Small, Richard H. JAES Volume 22 Number 8 pp. 592-601, October 1974 Speaker Systems http://www.aes.org/e-lib/browse.cfm?elib=2739 passive radiator, Part 2: Synthesis of Small, Richard H. JAES Volume 22 Number 9 pp. 683-689, November 1974 http://www.aes.org/e-lib/browse.cfm?elib=2731 The UAV-Cone Speaker phase shifter Olson Harry F. JAES Volume 21 Number 7 pp. 582, 583, September 1973 http://www.aes.org/e-lib/browse.cfm?elib=1947 recent developments in high fidelity radiator direct speakers Olson, Harry F., Preston, John May, Everett G. JAES Volume 2 Issue 4 pp. 219-227, October 1954 Design http://www.aes.org/e-lib/browse.cfm?elib=47 speaker systems Acoustic Sunrise, Part Phillips, Alan S. AES Convention: 109 (September 2000) [preprint] Paper Number: 5279 http://www.aes.org/e-lib/browse.cfm?elib=9059 The loudspeaker Sunrise Box Geddes, Earl R. JAES Volume 47 Issue 1 / 2 pp. 3-13, February 1999 http://www.aes.org/e-lib/browse.cfm?elib=12118 Augmented Radiator Loudspeaker Passive systems, Part 1 Clarke, Thomas L. JAES Volume 29 Number 6 pp. 394-404, June 1981 http://www.aes.org/e-lib/browse.cfm?elib=3906 Augmented Passive Radiator Loudspeaker Systems Part 2, Clarke, Thomas L. JAES Volume 29 number 7 / 8 pp. 511-516, July / August 1981 http://www.aes.org/e-lib/browse.cfm?elib=3896 United ________________________ States Patent 6,782,112 (August 24, 2004) Low Frequency Transducer Box Geddes, Earl R. http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u =%% 2Fnetahtml 2FPTO% 2Fsrchnum.htm & r = 1 & f = G & l = 50 & s1 = 6782112.PN. PN/6782112 & OS = & RS = PN/6782112 U.S. Patent 6,704,426 (March 9, 2004) Speaker System Croft, III, James J. http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u =%%% 2Fnetahtml 2FPTO 2Fsrchnum.htm & r = 1 & f = G & l = 50 & s1 = 6704426.PN. PN/6704426 & OS = & RS = PN/6704426 U.S. Patent 4,076,097 (February 28, 1978) Augmented Passive Radiator Loudspeaker Clarke, Thomas http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u Lowe =%% 2Fnetahtml 2FPTO% 2Fsrchnum. htm & r = 1 & f = G & l = 50 & s1 = 4076097.PN. PN/4076097 & OS = & RS = PN/4076097 U.S. Patent 3,772,466 (November 13, 1973) Speaker System Hossbach Erich http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u =%% 2Fnetahtml 2FPTO% 2Fsrchnum.htm & r = 1 & f = G & l = 50 & s1 = 3772466.PN. PN/3772466 & OS = & RS = PN/3772466 U.S. Patent 4,350,847 (September 21, 1982) Polk Subwoofer system using a passive radiator, Matthew S. http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u 2Fnetahtml =%%% 2FPTO 2Fsrchnum.htm & r = 1 & f = G & l = 50 & s1 = 4350847.PN. PN/4350847 & OS = & RS = PN/4350847 U.S. Patent 3,669,215 (June 13, 1972) passive radiator for use in Bass Reflex Speaker System Kikuchi, Takeo; Hashino, http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p Hisaaki = 1 & u =%% 2Fnetahtml 2FPTO% 2Fsrchnum.htm & r = 1 & f = G & l = 50 & s1 = 3669215.PN. PN/3669215 & OS = & RS = PN/3669215 (To download U.S. patents I recommend using the free search tool www.pat2pdf.org patent)
Logitech x-530 with Passive Radiator Port Noise Comparison
