The foam plug that Dr. Geddes uses is patented and a key part of the WG design. With over 21 patents, he has a clue!
Look at the bottom here. http://gedlee.com/Earl_resume.htm
Look at the bottom here. http://gedlee.com/Earl_resume.htm
waveguide speakers
What are the advantages/disadvantages of speakers with one driver loaded with a waveguide or both the tweeter and the mid/woofer loaded as such.
If I understand correctly distortion is lowered somewhat since less power is required, side wall reflections are reduced somewhat and the sweet spot is much larger.
Thanks
If I understand correctly distortion is lowered somewhat since less power is required, side wall reflections are reduced somewhat and the sweet spot is much larger.
Thanks
6 responses Add your response
As indicated above, Geddes is an expert on this. I have heard that Genelec was the first to produce speakers with waveguides. I have Mackie HR624mkiis that have waveguides and love them - way better than the "audiophile" speakers I have owned in the past - BW 805s, Acoustat, Rogers, Advent. Undoubtedly the waveguide has something to do with it since it allows dispersion to be controlled, particularly in the crossover region - it flattens the power response to that of the direct response and reduces early reflections as well. See the Geddes website - BTW the Mackies have a similar measured response (flat on-axis and smooth even tapering in the highs off-axis even in the xover region) to the Geddes speakers. |
Or if you are into DIY, check http//www.diysoundgroup.com |
Perhaps a place to start on waveguides: way/103872-geddes- waveguides.html>http://www.diyaudio.com/forums/multi- way/103872-geddes-waveguides.html buys/166312-waveguides- horns.html>http://www.diyaudio.com/forums/group-buys/166312- waveguides-horns.html My own speakers, Auto-tech's Mummy MkII, are equipped with a 12" so-called OSWG waveguide(1" throat, fed by a compression driver) and a 12" mid/bass driver, incorporated into a heavily damped fiberglass housing/enclosure, and they sound wonderful. Here's a review of them, if it has any interest: mummy/>http://hifipig.com/yummy-mummy/ I've been a proponent of waveguide-based speakers for some years now, starting with S.P. Technology/Aether Audio and now the Polish-based Auto-tech speakers. Feel free to ask away on specifics with regard to my impressions on the sonic advantages of waveguide-based speakers here mentioned. |