| |
275 Search Results Found |
| 1 |
Forum: Pi Speakers «»
Posted on: Fri, 14 November 2008 00:03 «»
By: Wayne Parham
22Hz
The LAB12 woofer works well in vented cabinets from 2.0ft3 to 6.0ft3 with the Helmholtz frequency tuned to 22Hz.
|
| 2 |
Forum: Pi Speakers «»
Posted on: Tue, 28 October 2008 12:00 «»
By: Wayne Parham
Re: 40Hz
No, it's not that. The driver and port are placed where internal standing wave nodes don't affect response. The Helmholtz resonance would be about 45Hz even without insulation. After insulation is applied, it drops to 40Hz. The insulation is to damp s...
|
| 3 |
Forum: Pi Speakers «»
Posted on: Sun, 14 September 2008 01:52 «»
By: Wayne Parham
Re: 8-Pi cubic feet and tuning freq?
The eight π rear chamber is 4.5ft3 and the Helmholtz frequency is 40Hz.
|
| 4 |
Forum: Pi Speakers «»
Posted on: Sat, 16 August 2008 11:48 «»
By: Wayne Parham
Re: OK where to start
If you build the cabinet between 4.0ft3 and 5.0ft3, tune the cabinet to 38Hz. If 5.0ft3 to 6.0ft3, tuned to 35Hz. If 6.0ft3 to 7.0ft3, tune to 33Hz. If 7.0ft3 to 8.0ft3, tune to 30Hz. Do not go larger than 8.0ft3.To tune the box, size the port accorin...
|
| 5 |
Forum: Pi Speakers «»
Posted on: Wed, 06 August 2008 11:26 «»
By: Wayne Parham
Re: one- Pi tunning freq.
The Helmholtz frequency of the one π loudspeaker is 55Hz.I'll send plans for the 12π basshorn subwoofer.
|
| 6 |
Forum: Pi Speakers «»
Posted on: Fri, 01 August 2008 11:11 «»
By: Wayne Parham
Re: 4Pi Pro port?
The port should be 6" x 3.5" and 10" long. It doesn't matter if the wide dimension is horizontal or vertical, although if the tweeter is mounted internally, it's a tight fit and has to go the way it is. But if you move the tweeter up on top and move the...
|
| 7 |
Forum: Speaker «»
Posted on: Tue, 08 July 2008 18:25 «»
By: Wayne Parham
Re: end correction
End correction is a phrase that describes the virtual path length of a horn in excess of its physical length. It is similar to the corrected length of a port in a Helmholtz resonator. Depending on mouth area, the added virtual length can be fairly subs...
|
| 8 |
Forum: Pi Speakers «»
Posted on: Tue, 24 June 2008 12:23 «»
By: Wayne Parham
Re: New to forum, building 2Pi towers
In many cases, a bass-reflex cabinet can be made of arbitrary shape. The important thing is the volume of the cabinet and the size of the port. However, this really only holds up for boxes that are acoustically small. Larger cabinets can develop pipe b...
|
| 9 |
Forum: Pi Speakers «»
Posted on: Tue, 03 June 2008 23:53 «»
By: Wayne Parham
Re: My 2 Pi Towers Review
Thanks for the review!Send me your address via E-Mail and I'll send you a pair of logos.As for the woofer/tweeter height and listening position, the two sum perfectly when the listener is on-axis with the midwoofer. Higher than that and the tweeter leads...
|
| 10 |
Forum: Pi Speakers «»
Posted on: Fri, 16 May 2008 11:28 «»
By: Wayne Parham
Re: Two Pi Towers... about to start cabinets
It's hard to say what those changes will do. The rounded edges probably won't do anything, so no harm there. Changing dimensions is another story though. The cabinet is tall enough it has standing waves in the bass range. It was designed with Helmholt...
|
Posting Rules
Members
Search
Help
Register
Login
Get a T-Shirt!
