Push-Pull Tapped Horn |
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snowflake
Old Croc Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3118 |
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what are the drivers in this box
http://www.danleysoundlabs.com/tapped_horn.asp?MODEL=TH%20221 neo magnets. i thought they were b&c initially but i think they have 8 spokes on the basket. it's hard to tell from the photo. anyone recognise them? cheers Phil |
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jethrocker
Old Croc Joined: 07 June 2006 Location: Chiapas, Mexico Status: Offline Points: 1942 |
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Well, seems DSL are using alot of new faital pro neos, and those drivers seem to have the distinctive
faital magnet structure. Faital don't have a 21" model listed on their site, so could be oem. |
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Deadbeat
Old Croc Joined: 12 March 2008 Location: Singularity Status: Offline Points: 3167 |
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Yer. You noticed them on the synergies as well? Comps as well. Their phase plug up to throat thing seems to do quite well.
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Away on extended leave.
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_djk_
Old Croc Joined: 23 November 2004 Location: United States Status: Offline Points: 6002 |
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"i thought they were b&c initially but i think they have 8 spokes on the basket"
Blow up the pdf to 300%~400%, you will see it's the B&C.
Edited by _djk_ - 10 June 2009 at 11:10am |
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djk
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sheffield-junglist
Registered User Joined: 12 June 2008 Location: Sheffield Status: Offline Points: 573 |
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Its basically one driver facing one way and another driver wired 180 degrees out of phase (Positive wire connected to negative terminal, negative wire connected to positive terminal) facing the other way. This makes them basically behave like one driver. When one pushes, the other pulls and vice versa hence push-pull cabs. Wiring a driver out of phase will make it move forwards when it should be moving backwards etc... It creates a perfectly inverse signal Sorry if you knew the phase stuff but I'm not sure how much you already know Edited by sheffield-junglist - 16 June 2009 at 11:25pm |
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AndyWave
Registered User Joined: 30 March 2008 Location: Finland Status: Offline Points: 380 |
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Why not use 12P1000Nd model instead? I've made a pair of 1*12" tapped subs with them for live music bar. (or should I call them bass cabs since they're tuned to 45Hz). Works well. Design guidelines are in same ballpark as in DJK's 40Hz example. ---------------------------------------------------------- 2pcs 45Hz single tapped horns parallel Def_Const |Horn Dimensions { Def_Driver 'Dr1' |2pcs Beyma 12P1000N Sd=1100cm2 system 'S1' Driver Def='Dr1' Node=1=0=3=4Waveguide 'W1' Node=2=3 STh={a1} SMo={a2} Len={l1} Conical Waveguide 'W2' Node=3=4 STh={a2} SMo={a3} Len={l2} Conical Horn 'H1' Node=4 STh={a3} SMo={a4} Len={l3} Conical -------------------------------------------------------------------------------- Graphs http://www.speakerporn.com/displayimage.php?album=30&pos=8 Tested 'em with ev CP-3000S in bridge mode, clipping (more or less 1600W peak each), until I could smell the glue getting hot. No excursion problems (x mech 52mm p-p). Bar drives them with 2x PSL1200 in bridge (2x 8R load). Limiters set from -1dB from clip. Running everyday, no problems. Andy |
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torturing electrons since ......
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