Gen0me TH12. 12BG100 |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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Posted: 06 February 2017 at 10:48pm |
Why choose this driver?
18" Tapped horns I know usually have smaller excursion than Xmax. It means that such huge Sd/Xmax is getting wasted for expensive driver. What goes further large driver needs large box. For my set of goals much larger. The enclosure will be huge. Forklift truck huge. This one is 450dm net volume. 12" driver reaches its excursion limits close to its rated power. Although after many simulations I think 15" driver will be better for tapped horn and very close to using its 100% potential. Why this tapped horn is better then others? First go purple mountains. Simply usefull range is more effective then not usefull. Hornresps I find on the internet has this problem. Even Danleys... Second: mine has 3 small mountains in usefull bandwitch instead of 2. It means more detailed sound. Lastly - green mountain. Bass horns with this mountains has high effectivity rise with stacking multiple horns. Ofc in costs of complexity of build. f3: 2pc, halfspace - 37Hz. f3: 4pc, halfspace - 34Hz. Here are the plans. https://drive.google.com/open?id=0B5y23T8xURtGRFV4b05xTUloY00 As usually its free design for non-commercial use. For commercial use - contact me. |
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bass*en*mass
Old Croc Joined: 03 September 2009 Location: "unknown" Status: Offline Points: 4009 |
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genome,
those "purple mountains" are way out of the usable passband and show resonances rather than useful output.. Othorn is almost same size as yours and loaded with a 21" thats capable of quite some more displacement and normally thats all that matters. Max SPL is limited by xmax clearly, the more the better, smaller/cheaper drivers might work but at the cost of SPL. Btw., looking at those construction "plans" i highly doubt your sims are correct to start with tbh. |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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Yes so it is disadventage if they are louder than usefull bandwitch. B&C 12BG100: X-max:10.5mm X-var: 14mm B&C 21SW152-4 X-max: 15mm X-var: 16mm So here is comparison of Othorn vs TH12. ¬255£ vs ¬555"£ Concerning costs of enclosure there wont be as huge difference price. More on the amps side 3600W vs 1000W Anyway looks like for very existence of this box It should be simplified. Dont worry about driver being far from end of enclosure, it is part of this design. Also the l12 is ¬40cm. Not typical but I saw that one earlier on the designs. And a little ot. Does Othorn kick? Is it even possible to put filter weak enough to use this kick with Othorn purple mountains? Edited by gen0me - 11 February 2017 at 1:35pm |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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You were right last part has wrong expansion.
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