justinsweber Posted August 27, 2011 Share Posted August 27, 2011 Hey everyone, I wanted to post some pics from this week. Dave Harris came over to compare speakers. He brought with him 2 of his own speakers…. Non Klipsch in form vs my CS-1. The CS-1s are Bob Crites woofers, Selenium H25-25 horn and Selenium D220ti 16ohm. I had a friend build me the crossovers…(Crossovers don’t make use of autoformers), Cab is 2.2cu ft, 1.25” thick motor board and ¾” on all other panels. The cab has a motor board to back board brace and is very resonate free. (The CS-1 is a Bob Crites creation and I’d say is an incredibly neutral 2way). Dave’s creation may have been born from the use of his tweeter lens on my Cornscala’s. During the Cornscala build (Using his Eliptical Horn) I had brought the Selenium baby check horn but saw his tweeter lens and begged him to use it. When he compared the two lenses, it was clear his lens was a better choice. Dave has paired this lens and a Selenium D220ti for the 2nd half of a 2way. The Bass is handled by an unlikely choice, a 10” woofer with a whizzer cone. I hope Dave chimes in to share more… Cab I think was similar in size the CS-1s and built of 3/4" ply... very cool bracing inside, ported via 2 PCV ports. The craziness is that the crossover was done with a Lpad and a Capacitor. He additionally brought an ALK crossover and it sounded much much better, but the very simple Lpad/Capacitor arrangement was more than enough for 95% of all the music. Dave’s combination was really cool, tighter bass than my CS-1 and perhaps greater extension. I still love what I have, but I liked Dave’s design enough to ask that he build me 1. Really cool seeing how different designs can get so close to amazing sound. Quote Link to comment Share on other sites More sharing options...
justinsweber Posted August 27, 2011 Author Share Posted August 27, 2011 #2 Quote Link to comment Share on other sites More sharing options...
Guest David H Posted August 28, 2011 Share Posted August 28, 2011 Dave’s creation may have been born from the use of his tweeter lens on my Cornscala’s. This is absolutely correct, I had no intention of making this horm available because I didn't think it would perform any better than the run of the mill plastic lenses by selenium or etc. Justin however was insistant that I do an a/b comparison of the lenses on his Cornscala's, the difference in the two lenses was far from subtle, and was my inspiration to use this lens in a 2 way speaker. The woofer with a whizzer cone is a tried and true pro audio driver used primarily in bass amps, this 10 inch driver has extension up to 4khz which makes the simple single capacitor first order balancing network feasable. I have been considering using a pair of these woofers in a tower 3-way configuration to gain spl and overall performance. The ALK Extreme Slope crossover is clearly a better choice for 2 channel listening, however the simple network is more than ample for most applications. During the crossover swap, I believe piano was playing, Justin's fist impression was " I dont really hear a difference" I suggested he choose some music he was very familiar with, I believe Justin chose "Peppery Man" by "Natalie Merchant", from Justin's expression alone, I could see he perferred the ALK ES network, which was no surprize. The Beauty of this ALK ES network is that it is not an expensive network to build, Litz inductors are not required, and the component values are readily available from Parts Express, Madisound. Dave Quote Link to comment Share on other sites More sharing options...
brians7 Posted August 28, 2011 Share Posted August 28, 2011 I was inspired by Dave's speakers. So this weakend I built these speakers. It will use the same woffer and APT-150 super tweeter. Brian Quote Link to comment Share on other sites More sharing options...
Guest David H Posted August 28, 2011 Share Posted August 28, 2011 Very cool, I hope you are as pleased with the results. Dave Quote Link to comment Share on other sites More sharing options...
brians7 Posted August 28, 2011 Share Posted August 28, 2011 Thanks Dave. I made cabinet volume 2.9 cubic feet and the port 1.75x14x7 so it is loaded a little different. I will let you know how it works out. Brian Quote Link to comment Share on other sites More sharing options...
Johnny's Jill Posted August 29, 2011 Share Posted August 29, 2011 Brian, very cool project indeed. I will be looking forward to your speaker report. Justin, I thought you were going to like the Drift. You have a nice system, and Dave tells me he liked your Emo DAC so much he ordered one for himself. Craig 73 Here is a shot of the Drift in my overfull listening room. Quote Link to comment Share on other sites More sharing options...
justinsweber Posted August 29, 2011 Author Share Posted August 29, 2011 Thank god someone else has too many speakers/audio equipment too. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted August 29, 2011 Share Posted August 29, 2011 Thank god someone else has too many speakers/audio equipment too. I think that is a reasonably common thin around the forums.Justin, how about a 10.25" Circletrac ? I was thinking about building a twin woofer 3-way version of the Drift. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted August 29, 2011 Share Posted August 29, 2011 Side View Fc-500Hz Quote Link to comment Share on other sites More sharing options...
Guest David H Posted August 29, 2011 Share Posted August 29, 2011 3 way Drift sketch. Quote Link to comment Share on other sites More sharing options...
justinsweber Posted August 30, 2011 Author Share Posted August 30, 2011 I just want one of the horns for show and tell :-).... What driver are you thinking? Quote Link to comment Share on other sites More sharing options...
Guest David H Posted August 30, 2011 Share Posted August 30, 2011 I just want one of the horns for show and tell :-)....CoolWhat driver are you thinking? Still considering the use of the D-220. Did some testing last night horn loading a soft dome into the Contrac Hybrid lens, results are excellent so far. Dave Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 3, 2011 Share Posted September 3, 2011 You have a nice system, and Dave tells me he liked your Emo DAC so much he ordered one for himself. I recieved the Emotiva XDA-1 Dac yesterday, and I am pleasantly surprised, it seems to be well built, and sounds great. I am currently using it as a stand alone Dac/Preamp. Dave Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 10, 2011 Share Posted September 10, 2011 I was inspired by Dave's speakers. So this weakend I built these speakers. It will use the same woffer and APT-150 super tweeter. Brian Any update on your speakers yet?Dave Quote Link to comment Share on other sites More sharing options...
brians7 Posted September 11, 2011 Share Posted September 11, 2011 My projects always seem to take me forever. They are already loud with no drivers. I am going to try to build two crossovers and see witch I like more. A first order with a autoformer and second order with out autoformer at 4KHz. Brian http://s292.photobucket.com/albums/mm24/brians7/Mobile%20Uploads/?action=view¤t=0911012045.jpg Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 12, 2011 Share Posted September 12, 2011 Wow, those are loud, but the pic looks great. Dave Quote Link to comment Share on other sites More sharing options...
Johnny's Jill Posted September 16, 2011 Share Posted September 16, 2011 I like the red..... Keep up the good work. Craig 73 Quote Link to comment Share on other sites More sharing options...
brians7 Posted September 20, 2011 Share Posted September 20, 2011 Thanks I was able to put on the last coat over the weekend. http://s292.photobucket.com/albums/mm24/brians7/?action=view¤t=speaker005-1.jpg Quote Link to comment Share on other sites More sharing options...
Guest David H Posted September 21, 2011 Share Posted September 21, 2011 Thanks Dave. I made cabinet volume 2.9 cubic feet and the port 1.75x14x7 so it is loaded a little different. I will let you know how it works out. BrianI ran a simulation on your box design, should work excellent.Your box is the blue trace, the Drift is violet. Dave Quote Link to comment Share on other sites More sharing options...
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