Johnny's Jill Posted December 5, 2011 Share Posted December 5, 2011 I was looking at Dave's site, and saw ALK is building a budget Universal crossover for the Cornnscala/Cornwall. I am definately in. Here is the page. http://mysite.verizon.net/res12il11/id126.html Craig 73 Quote Link to comment Share on other sites More sharing options...
Johnny's Jill Posted December 5, 2011 Author Share Posted December 5, 2011 Pic Quote Link to comment Share on other sites More sharing options...
justinsweber Posted December 6, 2011 Share Posted December 6, 2011 My K401/K55 Cornscala's are next up for a refresh... Id love to hear details about the crossover. 16ohm drivers? Crossover points? with 2 lpads... are they adjustible? Wana try them on mine :-). Quote Link to comment Share on other sites More sharing options...
jhoak Posted December 6, 2011 Share Posted December 6, 2011 I'm interested too. Any idea what would need to be changed for an 8 ohm squawker driver? I'm running Selenium D405s Quote Link to comment Share on other sites More sharing options...
cfelliot Posted December 6, 2011 Share Posted December 6, 2011 I'd love to see a Heresy version too! Should only require a few value changes. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted December 6, 2011 Share Posted December 6, 2011 My K401/K55 Cornscala's are next up for a refresh... Id love to hear details about the crossover. 16ohm drivers? Crossover points? with 2 lpads... are they adjustible? Wana try them on mine :-). The crossovers use adjustable LPads on the tweeters only. They are built on a circuit board with 0-12db attenuation settings, and look very similar to Al's tweeter attenuators. I have a set pre-ordered, so trying them in your Cornscala's is a good possibility. Crossovers points. 600/6000 Dave Quote Link to comment Share on other sites More sharing options...
Guest David H Posted December 6, 2011 Share Posted December 6, 2011 I'm interested too. Any idea what would need to be changed for an 8 ohm squawker driver? I'm running Selenium D405s No changes needed, the 8 ohm drivers would simply use a different tap on the autoformer. Dave Quote Link to comment Share on other sites More sharing options...
Guest David H Posted December 6, 2011 Share Posted December 6, 2011 I'd love to see a Heresy version too! Should only require a few value changes. True, a few mods might make this perfect in a Heresy. I emailed ALK about this.Dave Quote Link to comment Share on other sites More sharing options...
Johnny's Jill Posted December 6, 2011 Author Share Posted December 6, 2011 I'd love to see a Heresy version too! Should only require a few value changes. I would like to know as well, I have Heresy's for surrounds, and at this price I wouldn't mind upgrading. Craig 73 Quote Link to comment Share on other sites More sharing options...
Guest David H Posted December 6, 2011 Share Posted December 6, 2011 At 10:29 AM 12/6/2011, you wrote: >Al, what changes would need to be made to use the Cornscala-wall >network in a Heresy 1? Inductor, and midrange cap? > >Dave Harris Hi Dave, I did a computer analysis run looking through the squawker channel of the CSW network to see what the network would look like to a Heresy. The answer is that it will work fine with no changes. This network will operate in almost any of the speakers the guys are using with the exception of the Khorn. If you look at the plot I have attached, the squawker channel is down about 2.5 dB at 600 Hz, where it was designed to be, but at 700 Hz it's only down about 1.9 dB. That's virtually no change. This is the advantage of the 1st order crossover. It is "Universal" in nature. It really just allows the woofer and midrange to be connected together to form a constant impedance load to the amp allowing the horns or drivers to do the actual acoustic crossing over! What makes this network truly applicable to nearly any configuration is that both the squawker and the tweeter will be adjustable. You should be able to dial in anything! Al K. Quote Link to comment Share on other sites More sharing options...
Guest David H Posted December 6, 2011 Share Posted December 6, 2011 I'd love to see a Heresy version too!According to ALK, this will operate fine in a Heresy with no changes. Quote Link to comment Share on other sites More sharing options...
cfelliot Posted December 6, 2011 Share Posted December 6, 2011 I'd love to see a Heresy version too!According to ALK, this will operate fine in a Heresy with no changes. In that case, I will anxiously await release. First up will be my center channel H I, then I want to get my Cornwalls back online. Thanks for the replies. Quote Link to comment Share on other sites More sharing options...
Johnny's Jill Posted December 6, 2011 Author Share Posted December 6, 2011 According to ALK, this will operate fine in a Heresy with no changes. Nice. Craig 73 Quote Link to comment Share on other sites More sharing options...
mark1101 Posted December 7, 2011 Share Posted December 7, 2011 Is this a first order crossover? Quote Link to comment Share on other sites More sharing options...
mark1101 Posted December 7, 2011 Share Posted December 7, 2011 Hey Dave, Can you explain how this works? The drawing shows no connections to the squawker terminals and the email message says tehe woofer and squawker get connected together and the horns and drivers do the crossing over. Huh? Quote Link to comment Share on other sites More sharing options...
Guest David H Posted December 7, 2011 Share Posted December 7, 2011 Hey Dave, Can you explain how this works? The drawing shows no connections to the squawker terminals and the email message says tehe woofer and squawker get connected together and the horns and drivers do the crossing over. Huh? The Picture is simply an illustration, to show the board layout.The crossover is the identical design as the Universal with the crossover raised to 600Hz. 1st order low pass 2nd order mid, and 3rd order high pass. Dave Quote Link to comment Share on other sites More sharing options...
hklinker Posted December 7, 2011 Share Posted December 7, 2011 Dave, Is this the same design as the one I built for my Cornscalas? Herb Quote Link to comment Share on other sites More sharing options...
Guest David H Posted December 7, 2011 Share Posted December 7, 2011 Dave, Is this the same design as the one I built for my Cornscalas? Herb Hi Herb, the crossover is very similar to the ones you built. The major change between yours and this new offering is the woofer inductor change, shifting this crossover point from 400Hz to 600Hz. This crossover is also using a multi setting fixed L-Pad on the tweeter, where you are using an autoformer based attenuator. Dave Quote Link to comment Share on other sites More sharing options...
sootshe Posted December 8, 2011 Share Posted December 8, 2011 Dave, Can this be used for the Cornscala DBB or be adjusted to suit? Thanks, John Quote Link to comment Share on other sites More sharing options...
Guest David H Posted December 8, 2011 Share Posted December 8, 2011 Dave, Can this be used for the Cornscala DBB or be adjusted to suit? Thanks, John The HF section would certainly work, but the parallel woofers may pose a problem. The Impedence and inductance have both changed. What woofers are you using? Dave Quote Link to comment Share on other sites More sharing options...
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