Location: Shoreline Community College, Rm 818 (music bldg), Shoreline, WA
Moderated by: Dan Mortensen
Speaker(s): Dana Olson & Rene' Jaeger, PNW AES Committee
A home loudspeaker project can take many forms and approaches. Since the design of a loudspeaker system doesn't require a lot of math, it is a more a woodworking project than it is an engineering project. Or is it?
You could buy a kit from Madisound.com or PartsExpress.com and go through the assembly process. Your individualization might be some crossover tweaks and the cabinet finish.
You could buy the individual drivers from any number of vendors, apply the Thiele-Small formulas to the TS parameters to arrive at an enclosure design and LF profile, then optimize the crossover network to get the other drivers to marry with the woofer in a pleasing way.
The projects shown at the meeting are the result of a design competition from a local audiophile group. René will take us through a the rudiments of the competition and then Dana will present a design review of his winning project, highlighting the free and nearly free software tools used. The contest imposed one design requirement: the system needed to use a passive crossover. Beyond that, it was open season.
We'll take a look at
Of course, we'll have a chance to listen to the finished system.
Other Business: Let Us Hear Your Music! We've decided that although we talk a lot at our meetings about how to better record and play back music, we never play any when we are together. We invite you to bring your own music to share with the group at each meeting. There are two listening opportunities: 30 minutes before the meeting, and 15-20 minutes at the intermission/break. The music can be something that you recorded, or played on, or someone else's material that you enjoy. We (Rick & Dan) reserve the right to adjust the volume and EQ of all music while it's being played. Ideally you would create a special version of the material that fades or ends at the requisite time. We will provide a stereo playback system (no subs) and a CD player, but any other format needs to have its own hardware and terminate in a pair of 1/4" tip-sleeve phone plugs (analog). At the conclusion, you have about a minute to describe what we just heard. Interested? Contact Rick Chinn to let him know you want the slot, and tell him which one. The 2nd person to reply gets the remaining slot, whichever one it is. 3rd and 4th should bring their music to the meeting incase of a no-show. There are other details. They and other terms and conditions can be found here.
Posted: Thursday, September 29, 2016
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