cgallmore Posted September 27, 2013 Report Share Posted September 27, 2013 I have an obsidian audio 15 in sub. right now it is in a ported box tuned to 30hz but i want to play highs while still getting the lows. i was debating on a 4th order. obsidians site says 2-2.5 for sealed box and i was reading that a 4th is a 2:1 ratio. is a 1:1 ratio okay? i was thinking about tuning the ported section to 40 hz is that still too low? Here are the specs of the sub Re: 4.0 OhmFs: 31 HzQms: 2.9Qes: 0.76Qts: 0.61Vas: 81Le: 4.36 mHBL: 18.18SPL: 87 dBSd: 856 cm^2Mms: 321 gXmax: 20mmPeak-to-peak: 62mm (2.45")Power Handling: 600 watts RMS Recommended enclosure info:Sealed ~ 2.0 to 2.5 ft^3Ported ~ 2.5 to 3.75 ft^3 @ 28 to 32 HzCutout: 14.0"OD: 15.5"Mounting depth: 8"Mounting flange to top of surround: 1.5"Displacement: 0.19 ft^3 Link to comment Share on other sites More sharing options...
sundown escort Posted September 27, 2013 Report Share Posted September 27, 2013 I would probably do 1.5 sealed and 3 ported. That is my opinion, maybe some greater minds would chime in for ya. Link to comment Share on other sites More sharing options...
cgallmore Posted September 27, 2013 Author Report Share Posted September 27, 2013 I would probably do 1.5 sealed and 3 ported. That is my opinion, maybe some greater minds would chime in for ya. does the tuning seem okay? the dimensions i have to work with is small i have 32w 20h 20d Link to comment Share on other sites More sharing options...
sundown escort Posted September 27, 2013 Report Share Posted September 27, 2013 I would probably do 1.5 sealed and 3 ported. That is my opinion, maybe some greater minds would chime in for ya. does the tuning seem okay? the dimensions i have to work with is small i have 32w 20h 20d How much power are you going to be running to it? Link to comment Share on other sites More sharing options...
sundown escort Posted September 27, 2013 Report Share Posted September 27, 2013 I would probably do 1.5 sealed and 3 ported. That is my opinion, maybe some greater minds would chime in for ya. does the tuning seem okay? the dimensions i have to work with is small i have 32w 20h 20d How much power are you going to be running to it? if you do 1.75 sealed and use a 2 in port tuned to 30 htz you would end up with about 3.5 ported side. These numbers would be pretty close if you double baffled it cuz i went off of two seperate boxes Link to comment Share on other sites More sharing options...
CleanSierra Posted September 27, 2013 Report Share Posted September 27, 2013 I would probably do 1.5 sealed and 3 ported. That is my opinion, maybe some greater minds would chime in for ya.does the tuning seem okay? the dimensions i have to work with is small i have 32w 20h 20d How much power are you going to be running to it? if you do 1.75 sealed and use a 2 in port tuned to 30 htz you would end up with about 3.5 ported side. These numbers would be pretty close if you double baffled it cuz i went off of two seperate boxesA 4th order tuned to 30 Hz huh, I'm not sure about that....And a 2" port? How inefficient and worthless do you want the enclosure to be? Im not the one you want to try to troll. Just a fyi for you. Link to comment Share on other sites More sharing options...
Joe X Posted September 27, 2013 Report Share Posted September 27, 2013 You are missing to tell what vehicle, the specs of the box, you could just have a weak or misaligned front stage, but if it sounds boomy or loose then that's different, likely a box issue. Link to comment Share on other sites More sharing options...
cgallmore Posted September 27, 2013 Author Report Share Posted September 27, 2013 You are missing to tell what vehicle, the specs of the box, you could just have a weak or misaligned front stage, but if it sounds boomy or loose then that's different, likely a box issue. its a 2005 toyota rav4 and it plays a god awful noise above 35 hz. and im running 800 watts and its rated for 600. i feel like i dont get any power from it unless my radio is turned up all the way. i want to play a little higher notes than what im at now. Link to comment Share on other sites More sharing options...
cgallmore Posted September 27, 2013 Author Report Share Posted September 27, 2013 I would probably do 1.5 sealed and 3 ported. That is my opinion, maybe some greater minds would chime in for ya. does the tuning seem okay? the dimensions i have to work with is small i have 32w 20h 20d How much power are you going to be running to it? 800 watts rms Link to comment Share on other sites More sharing options...
sundown escort Posted September 28, 2013 Report Share Posted September 28, 2013 I would probably do 1.5 sealed and 3 ported. That is my opinion, maybe some greater minds would chime in for ya.does the tuning seem okay? the dimensions i have to work with is small i have 32w 20h 20d How much power are you going to be running to it? if you do 1.75 sealed and use a 2 in port tuned to 30 htz you would end up with about 3.5 ported side. These numbers would be pretty close if you double baffled it cuz i went off of two seperate boxesA 4th order tuned to 30 Hz huh, I'm not sure about that....And a 2" port? How inefficient and worthless do you want I would probably do 1.5 sealed and 3 ported. That is my opinion, maybe some greater minds would chime in for ya.does the tuning seem okay? the dimensions i have to work with is small i have 32w 20h 20d How much power are you going to be running to it? if you do 1.75 sealed and use a 2 in port tuned to 30 htz you would end up with about 3.5 ported side. These numbers would be pretty close if you double baffled it cuz i went off of two seperate boxesA 4th order tuned to 30 Hz huh, I'm not sure about that....And a 2" port? How inefficient and worthless do you want the enclosure to be? This was just for example. He can figure out the numbers he wants to use Link to comment Share on other sites More sharing options...
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