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- Newsgroups: rec.audio
- Path: sparky!uunet!world!DPierce
- From: DPierce@world.std.com (Richard D Pierce)
- Subject: Re: Port Frequencies
- Message-ID: <Bzooz9.J1s@world.std.com>
- Organization: The World Public Access UNIX, Brookline, MA
- References: <19921222.131250.27@almaden.ibm.com>
- Date: Tue, 22 Dec 1992 23:23:32 GMT
- Lines: 24
-
- In article <19921222.131250.27@almaden.ibm.com> BARRON@RHQVM14.VNET.IBM.COM writes:
- >A rather simple question....
- >Could someone explain the formula that describes the relationship
- >between a ports tuning frequency and the diameter and length of the port.
- >
- >This would be for a 4th order bass reflex enclosure (single port, single
- >driver)
-
- The port does not have a frequency in and of itself. It provides the
- acoustic mass that, together with the compliance of the air in the box,
- forms a resonant system with a specific frequency. It is this "tuning"
- that you are looking for. So in order to answer your question, it's
- necessary to know what the volume of the enclosure is.
-
- | Dick Pierce |
- | Loudspeaker and Software Consulting |
- | 17 Sartelle Street Pepperell, MA 01463 |
- | (508) 433-9183 (Voice and FAX) |
-
- --
- | Dick Pierce |
- | Loudspeaker and Software Consulting |
- | 17 Sartelle Street Pepperell, MA 01463 |
- | (508) 433-9183 (Voice and FAX) |
-