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Bronze Member Username: Juancarlos707El Centro, CA Imperial Post Number: 22 Registered: Nov-07 | This might sound like a dumb question but I want to build my own vented box. Is the vent and the length of the vent count as the enclosure as well. the specs say vented box 1-1.8Ft3. Does that include the vent as well??? or I dont count that... |
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Silver Member Username: Jesse59672OKLAHOMA Post Number: 802 Registered: Feb-07 | that is not including the port and the actual volume the subwoofer takes up |
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Bronze Member Username: Juancarlos707El Centro, CA Imperial Post Number: 23 Registered: Nov-07 | so just count the box volume without the port/vent. like if it was a sealed. |
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Gold Member Username: •cam•BC Canada Post Number: 1290 Registered: Nov-06 | Yep. |
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Bronze Member Username: Juancarlos707El Centro, CA Imperial Post Number: 25 Registered: Nov-07 | Oh I get It. and the specs also say Fo 30-36Hz. Thats what I dont get. Do you determine that by the length width height of vent or its more than that??? |
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Silver Member Username: Nickyp0219Post Number: 213 Registered: Jun-06 | http://reaudio.com/speaker_box/LPort_Box_Calc.html |
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Silver Member Username: Phil_salisburyPost Number: 473 Registered: Sep-06 | Well, that all depends on what the manufacturer states for the spec's of the enclosure and they will usually say that the volume is net or gross volume of the enclosure. Some companies just throw it all together and don't tell ya sh!t beyond that leaving the person to figure out what is the net volume and displacements involved for the spec's. Never assume anything unless it's stated or noted per what your trying to determine for an enclosure when it comes to designing it. |
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Bronze Member Username: Juancarlos707El Centro, CA Imperial Post Number: 26 Registered: Nov-07 | nickyp0219..thank you so much.Thats the website i really needed. |
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Silver Member Username: KaerfplSpencerport, NY USA Post Number: 780 Registered: Jun-06 | that RE calc is all wrong... or has it been fixed??? |
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Silver Member Username: Nickyp0219Post Number: 215 Registered: Jun-06 | Had Greg from Us amps run through the calculations I needed so I imagine its good |
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Bronze Member Username: Juancarlos707El Centro, CA Imperial Post Number: 27 Registered: Nov-07 | they didnt tell me if its net or gross. All I got was a piece of paper that said this. PORTED: VB(ft3)=2.00 <is that net or gross,what is net or gross? Fb(Hz)=32 Slot Port With=3(in) Slot Port Hieght=14(in) Port Lenght=48(in) |
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Bronze Member Username: Juancarlos707El Centro, CA Imperial Post Number: 28 Registered: Nov-07 | that was the recommended enclosure. But then I went to the website and it said this diffrently: 1-1.8Ft3 Fo 30-36Hz |
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Silver Member Username: Phil_salisburyPost Number: 474 Registered: Sep-06 | Well, there ya have it. Net Volume can be anywhere from 1 to 1.8 cu.ft. plus your displacements ( sub, port, port walls, bracing ) |