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Silver Member Username: Davids2004Houston, TX USA Post Number: 207 Registered: Jun-04 | Ok ive been looking at some subs. They require .7 cu foot for a ported box tuned to 40 hz. My box I have is .95 cu foot per sub for two subs after displacement and port displacement. Does the bigger the box get the lower the port is tuned. Also on another sub It requires .85 cu foot tuned to 50 hz. Same box as above Which sub would work the best. Please help. |
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Silver Member Username: Davids2004Houston, TX USA Post Number: 209 Registered: Jun-04 | anyone. |
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Silver Member Username: Jonathan_fGA USA Post Number: 642 Registered: May-04 | The box is tuned to whatever the box is tuned to, for example, you can tune a 4.0cu ft. box to 35 hz just like you can a 2.0 cu. ft box, port length and diameter (or width and height for slot ported applications, basically just the surface area of the port) is what determines tuning frequency. That being said, I can't tell you what your box is tuned to w/o port dimensions or box dimensions. You'll have to measure the boxes inside dimensions and measure the length of the port and diameter. 40 is a high tune, 50 hz is a very high tune, poor SQ there. |
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Silver Member Username: Davids2004Houston, TX USA Post Number: 210 Registered: Jun-04 | 3/4 mdf 12" tall 25" wide 19" Bottom Depth 14.5" Top Depth Two Ports 3" Diamer 8.5" long PVC |
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Silver Member Username: Jonathan_fGA USA Post Number: 644 Registered: May-04 | I don't know if you have a divider or not, but the tuning freq. is around 40-41 hz give or take a little since I don't know if it's divided. You're better off with the sub needing the 40 hz tune. |
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Silver Member Username: Jonathan_fGA USA Post Number: 645 Registered: May-04 | That's going by if the dimensions you gave me are outside dimensions, I assumed they were since you gave me the info that the MDF is 3/4. |
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Silver Member Username: Davids2004Houston, TX USA Post Number: 211 Registered: Jun-04 | No divider. So since the boxes are a little bigger then the subs need does that change the tuning frequency any at all or is that box set at that tuning frequency no matter what sub you put in the box. |
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Silver Member Username: Davids2004Houston, TX USA Post Number: 212 Registered: Jun-04 | What would the tuning be on this box if it was for 1 10 only but same dimensions. Thanks. |
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Silver Member Username: Jonathan_fGA USA Post Number: 648 Registered: May-04 | http://www.bcae1.com/spboxnew2.htm Play around on this site, it's simple, just enter your dimensions. |