| jwatts |
I am having a difficult time designing a bandpass box because the ports are to long and won’t fit inside the enclosure. My question is this. If I can preserve the front and back enclosure volume ratios can I simple multiply both by a factor and make them larger. The enclosure is a 4th order bandpass.
Example.
Assume was originally calculated to be.
Vf=.3ft^3
Vr=.5ft^3
Can I simply multiply both Vf and Vr by 3 and not change my passband, ripple, and Fb for the enclosure. |
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| lndm |
To make a vent shorter, you could make it narrower. Still, try to keep it as wide as possible. A really long vent can cause resonance problems anyway.
Have you considered mounting the vent outside the box? |
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| jwatts |
| My current application will not allow me to vent outside of the enclosure. |
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| Ron E |
| quote: | Originally posted by jwatts
Can I simply multiply both Vf and Vr by 3 and not change my passband, ripple, and Fb for the enclosure. |
No. Use a PR. |
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| Jonathan Bright |
| Is there any possibility of bending the ports inside the enclosure?If you use plasitc pipe the purchase of 90 degree joints etc is v.easy. |
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| jwatts |
| Does anybody have any experience using a PR in this type of application? If so does perform as well as a port. |
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