[TomS]

Curious if you built the speakers you posted about below? Sounds very interesting and would like to know how they sound?

Rick

http://www.gedlee.com/

[guest60106]

OK...am I missing something? Granted, I just skimmed this topic but I have been loading mids and tweets in many of my projects (both constant directivity and not) for 30 years. Back in my day we called those Horns.

Is “Waveguide” different?

MLC

[poseidonsvoice]

OK...am I missing something? Granted, I just skimmed this topic but I have been loading mids and tweets in many of my projects (both constant directivity and not) for 30 years. Back in my day we called those Horns.

Is “Waveguide” different?

MLC

Anand.

[krikor]

I've listened carefully to Dr Geddes' speakers, Wayne Parham's Pi speakers, and several of Duke's AudioKinesis speakers each year at the Lone Star Audio Fest, and I've built a pair of Wayne's Three Pi speakers. This experience has convinced me that waveguide speakers, toed in 45 degrees so their axes cross in front of the listener, offer some of the best soundstage imaging of any speakers I've heard.

I've had Wayne Parham's 3Pi speakers in my system as well (factory built pair, used at AKFest last year in the SMAC room) and liked them so much I've tracked down parts for a pair of 4Pi (just need to build cabs). Agree with the soundstaging ability... they really can disappear and rival my Maggies in a lot of ways. Extreme toe-in looks strange and first, but seems to be necessary with CD waveguides. 

http://www.pispeakers.com

I've got a pair of VMPS 626r on their way to me with the CDWG (Constant Directivity Wave Guide) grille... curious how these compare given the similar concept but somewhat different approach.

I really should check out GedLee speakers considering they are right in my backyard.

[rajacat]

If a little DIY doesn't put you off here's a group buy for Geddes like waveguides, other waveguides and horns. http://www.diyaudio.com/forums/group-buys/166312-waveguides-horns.html

I ordered a pair of the OSWG 12".

 You can even pick your color from a wide selection . A fiberglass enclosure is also offered.




-Roy

[Bugs]

There are many DIY projects making use of inexpensive JBL waveguides along with the Peavey and Dayton clones. There is a VERY long post on AudioKarma showing many projects using the JBL waveguide with a Selenium compression driver to replace the high frequency drivers in many older speakers. The Original and Larger Advent speakers being very popular donors. Econo-Wave

I id the same project using a pair of Boston A100s for the donor speakers and was happy with the project.

[JLM]

Waveguide direct/funnel the sound.  The intent is to improve efficiency and/or lower the operating frequency of tweeters by reducing how much of the air around the speaker receives the sound.  Since the higher frequency/shorter soundwaves are directional anyway this works for tweeters.

Horns are designed to compress the air and in effect amplify the sound at any frequency.  Non-linear compression of the air and high pressures that cause flexing of the horn itself lead (especially a energy intensive lower frequencies) to "horn distortions".