PBX VIDEO (josh)
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Silver Member Username: FiberPost Number: 167 Registered: Mar-06 | OK we had a little trouble on the last thread but im pretty sure this is right, again tell me what you think. http://realmofexcursion.com/videos/Powerbass/pbxxtreme15.1.wmv |
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Gold Member Username: Basshead86Ocala, FL USA Post Number: 2810 Registered: Aug-05 | wow.....i never can get into these videos... ....i guess cuz the sound and rumble and punch of the bass is not there on my microscopic computer speakers...lol  |
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Bronze Member Username: Bjamila123Sc Post Number: 27 Registered: Apr-06 | haha thats pretty cool how do they sound in that big @ss box?? you should port each individ. that be insane. |
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Gold Member Username: B101Queen City, NC USA Post Number: 2344 Registered: Sep-05 | muddy Ive heard some Treos reatain SQ over the videocorder microphone... LOL its crazy... |
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Gold Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 2493 Registered: Sep-04 | got them moving nicely but you should include something in the video of what they are donig... a cone can move 6 inches but only be hitting 120db.... show some flexing or something |
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Silver Member Username: FiberPost Number: 168 Registered: Mar-06 | would it be that loud ported ? I dont think I can take much more I already feel deaf they sound clean and hit hard and man do they get low. and they are just in a 1 chamber sealed box. but can anyone help me out what exacly do I need to port the box I want to make it 2 chambers with around 9-10 cf per sub 48x24x29 inchs is the dimensions for the box right now without 2 chambers I cant figure out those calculators can I get some help? I want it tuned to about 29hz |
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Silver Member Username: FiberPost Number: 169 Registered: Mar-06 | I will on my next vid trevor once I port the box |
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Silver Member Username: FiberPost Number: 170 Registered: Mar-06 | bump.^ |
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Gold Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 2499 Registered: Sep-04 | you DO NOT need 9-10 cuft per sub. 5 would be great, and you can easily tune that box to 29hz with a huge port too. it will SLAM then. just use a program and type in u want 29hz tune and 5 cuft net and keep adding port area until you reach 5cuft of port displacement... that is, after you separte into 2 chambers... |
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Silver Member Username: FiberPost Number: 171 Registered: Mar-06 | What are the name of some programs like the best one? |
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Gold Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 2503 Registered: Sep-04 | http://www.carstereo.com/help/articles.cfm?id=31 i use that. works great for me. |
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Silver Member Username: Matt12490Benicia, California USA Post Number: 706 Registered: May-05 | that is a great link trevor but how do you take account port displacement? |
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Silver Member Username: Matt12490Benicia, California USA Post Number: 711 Registered: May-05 | bump |
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Gold Member Username: Tdeaton1021Near Tampa, Florida USA Post Number: 2510 Registered: Sep-04 | well, you take lets say the length of the port (im making up numbers) length 27 and width is 3 and height is 15 lets say. now for a slot port your width for port displacement is actually going to be 3.75 because you have the wall of the port. multiply that by height 15, then by length 27... so 3.75x15x27=whatever... divide by 1728 and wha-la! you have your port displacement. for his application. say the drivber disp is .2 he will enter 5 cuft for net volume and then keep adding port area until his port displacement i 4.8cuft. hope that helps! |
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Silver Member Username: Matt12490Benicia, California USA Post Number: 718 Registered: May-05 | oOo makes sense. thanks man! |
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Silver Member Username: Matt12490Benicia, California USA Post Number: 721 Registered: May-05 | Wait, I have 1 more question about that site, Trevor. When it says "Enter Enclosure Volume" are they talking about before port/sub displacement or after you take all that into consideration? |
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