Guest David H Posted October 27, 2012 Share Posted October 27, 2012 The phase-rods on the Audio Nirvana and others similar are generally made electrically conductive to reduce the impedance rise and a replacement wooden rod/light-bulb/door-knob is not acceptable. Thats too bad, I have a gorgeous crystal door knob from my grandmothers vanity case I thought would look perfect as a phase plug. Quote Link to comment Share on other sites More sharing options...
djk Posted October 28, 2012 Share Posted October 28, 2012 "I understand the point but using a similar approach as this with extending the length into the horn would likely lower the number of notches in the response. I know it would be trial and error (mostly error) but that if I had a CNC I would give it a shot. " By all means, give it a try. I am still concerned as the air space between the cone and the slot openings acts as a low-pass filter and will probably roll off the HF. If I were to try this approach I would probably try a conical initial expansion, transitioning to tractrix near the mouth (think K402), and try some open-celled foam in the throat area to deal with the HOMs (reflections). Some people have been very happy with their Lowther driver on the Oris horns atop the Klipschorn bottoms. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 29, 2012 Share Posted October 29, 2012 Though the horn is a work in progress, I wanted to assemble the LF/HF section This will house the (2) 10"Dayton Pro woofers and the new Dayton 1"compression driver coupled to a ContracT HF lens. Dave Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 29, 2012 Share Posted October 29, 2012 Woofers housed in a 4cf ported enclosure estimated SPL 98db. Quote Link to comment Share on other sites More sharing options...
ZombieWoof Posted October 29, 2012 Share Posted October 29, 2012 Dave can you link that "New" dayton 1" compression driver you are using ?? Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 29, 2012 Share Posted October 29, 2012 The tweeter I ordered to try with this project is also a Dayton driver, it is the new Dayton D250 1" polymide compression driver. I intend to couple this to my ContracT lens. http://www.parts-express.com/pe/showdetl.cfm?partnumber=270-402 Here you go.Dave Quote Link to comment Share on other sites More sharing options...
ZombieWoof Posted October 29, 2012 Share Posted October 29, 2012 [:$] Sorry I guess I missed that in a earlier post . Looks like a very interesting project that I'm very interested in . Great Idea Dave ...... Quote Link to comment Share on other sites More sharing options...
Guest David H Posted October 31, 2012 Share Posted October 31, 2012 A bit of an update, I have the bass and HF sections assembled, and the updated horn built. No testing ofther than listening and SPL checks. The woofers come in approx 98db, the mids is approx 99db and the HF is 108db. These numbers tend to jive with my measurements. Dave Quote Link to comment Share on other sites More sharing options...
ZombieWoof Posted October 31, 2012 Share Posted October 31, 2012 . . . . Cool lookin' Dave . . . . . . [Y] How's it sound ? ? Quote Link to comment Share on other sites More sharing options...
justinsweber Posted October 31, 2012 Share Posted October 31, 2012 I soooooo want to hear! Quote Link to comment Share on other sites More sharing options...
Guest David H Posted November 1, 2012 Share Posted November 1, 2012 So far so good, I still need to do some tuning and driver balancing, but first impressions are WOW. Big horn big sound. Dave Quote Link to comment Share on other sites More sharing options...
Rudy81 Posted November 1, 2012 Share Posted November 1, 2012 Awesome! Ever since I got my big horns, I have stopped looking for upgrades and changes. Although, I have always looked for a used set of Oris horns. Well done on this project. Quote Link to comment Share on other sites More sharing options...
Rudy81 Posted November 5, 2012 Share Posted November 5, 2012 Dave, Have you had a chance to test, or listen to, the Tang Band W8-1808 or W8-1772? Those look like nice drivers and I have had great success with the sub drivers I used in my DIY tapped horn subs. Quote Link to comment Share on other sites More sharing options...
djk Posted November 5, 2012 Share Posted November 5, 2012 Since a tweeter is being employed I would look at a conventional mid driver suited for horn use. http://www.parts-express.com/pedocs/specs/294-652-bc-speakers-8pe21-specifications.pdf Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted November 5, 2012 Share Posted November 5, 2012 Since a tweeter is being employed I would look at a conventional mid driver suited for horn use. http://www.parts-express.com/pedocs/specs/294-652-bc-speakers-8pe21-specifications.pdf Good idea. They are quoting 106 db efficiency with horn loading. Need a good tweeter than can go down to about 3 Khz. Quote Link to comment Share on other sites More sharing options...
The Dude Posted November 5, 2012 Share Posted November 5, 2012 How do you like that Dayton 1" compression driver compared to the Selenium d220ti. Is there much difference between them. What does it mean that the Dayton is a compression driver. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted November 6, 2012 Share Posted November 6, 2012 The Dayton is a fine sounding driver, with nice extension to 17K+. What does it mean that the Dayton is a compression driver. Compression drivers are used in horn applications. For instance if the driver has a 2 inch diaphram and a 1 inch exit it uses compression. The Selenium D-220ti is compression as well. My first impression with this driver is good, however I have done minimal testing. Dave Quote Link to comment Share on other sites More sharing options...
Guest David H Posted November 12, 2012 Share Posted November 12, 2012 Getting back to work on the the horns. Here is a step in the build process, after the horn is shaped I coat the horn in thin filller before primer. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted November 12, 2012 Share Posted November 12, 2012 After the initial primering, I found a need to build a fixture to aid in the finishing process. For this I used a pair of hub bearings welded to a stand. This allows me to rotate the horns while applying the finish. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted November 12, 2012 Share Posted November 12, 2012 In the spirit of the Avantguard look alike build I assembled the outrigger stand, however I really dont like the looks of this so I don't think I will use it. Instead I have an idea to a horn mount that will allow this horn to be mounted on any speaker. Quote Link to comment Share on other sites More sharing options...
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