Thaddeus Smith Posted June 4, 2013 Share Posted June 4, 2013 Did that; let me know if you're not receiving messages either. Quote Link to comment Share on other sites More sharing options...
jwc Posted June 4, 2013 Share Posted June 4, 2013 Tc...... U and I were using that word cornscala before I ever started the project. The concept back then was on alot of people minds here to get those mids with the slam of the cornwall bass. Too long ago to know where I first heard it. Heck.....i could have heard it from Bob when talking on the phone to him. I had way too many crazy speaker ideas in my head back then. Right in there with "the voice of the corn". Colter may have said that phrase first...... Quote Link to comment Share on other sites More sharing options...
djk Posted June 5, 2013 Share Posted June 5, 2013 Bob's original naming convention made sense in the context of what he was doing. I suggest adopting a different convention for the multitude of newer designs. 15-2 for the two-ways, 15-3 for the three-ways, 215-2 and 215-3 for double 15 designs. Similar convention for 12" variants. Identify the woofer first, followed by the horn(s) and compression driver(s) 215-2; 2x Eminence Kappa Pro 15LF2 in 6 cu ft (net) Fb=35hz with Faital LTH142/HF140 at 600hz. Driver Properties Name: Kappa Pro-15LF-2 Type: Standard one-way driver Company: Eminence Speaker LLC No. of Drivers = 2 Mounting = Standard Wiring = Parallel Fs = 35 Hz Qms = 7.3 Vas = 198.8 liters Cms = 0.191 mm/N Mms = 108.3 g Rms = 3.263 kg/s Xmax = 6.7 mm Xmech = 18 mm P-Dia = 330.2 mm Sd = 856.3 sq.cm P-Vd = 0.574 liters Qes = 0.32 Re = 6.5 ohms Le = 1.4 mH Z = 8 ohms BL = 22 Tm Pe = 600 watts Qts = 0.307 no = 2.568 % 1-W SPL = 96.24 dB 2.83-V SPL = 97.15 dB ----------------------------------------- Box Properties Name: Type: Vented Box w/ Active HP Filter Shape: Prism, square (optimum) Vb = 6 cu.ft Fb = 35 Hz QL = 6.21F3 = 35.15 Hz Fill = none No. of Vents = 2 Vent shape = rectangle Vent ends = two flush Hv = 10.87 in Wv = 2.5 in Lv = 15.92 in ----------------------------------------- Active 12 dB/oct. HP Filter Fx = 35 Hz Qx = 2 ****************************************** The above box is -3dB at 35hz when used with the appropriate 35hz high-pass filter, and 104dB/2.83V/1M midband. Quote Link to comment Share on other sites More sharing options...
Dr Morbius Posted June 6, 2013 Share Posted June 6, 2013 Hey thaddeussmith, once you finish 'em and start listening to your Cornscalas (or whatever you finally call them) - I need to see you change your avatar from a frowny to a big smiley - trust me, it will come naturally!..............................................From a current Cornscala owner. Quote Link to comment Share on other sites More sharing options...
totalcomfort Posted June 7, 2013 Share Posted June 7, 2013 My version of the cornscala with Bob's parts Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted June 8, 2013 Share Posted June 8, 2013 totalcomfort, interesting configuration. i'm assuming that the bass bin has the prescribed interior volume, but looks slimmer than i'd expect. wondering how you made the woofer grill. looks pretty slick. Also, the uprights holding up the HF unit, could you say more about that? Quote Link to comment Share on other sites More sharing options...
totalcomfort Posted June 8, 2013 Share Posted June 8, 2013 totalcomfort, interesting configuration. i'm assuming that the bass bin has the prescribed interior volume, but looks slimmer than i'd expect. wondering how you made the woofer grill. looks pretty slick. Also, the uprights holding up the HF unit, could you say more about that? Yes the bass bin is the correct volume. I just increased the width and depth to make it a little shorter so I could use the stands.The woofer grill is a wood ring with some Parts Express grill cloth stapled to the back. The uprights are copper tubing covering the all thread that is holding them together.Used some good copper cleaner on them and they have a nice shine to them. Quote Link to comment Share on other sites More sharing options...
Marvel Posted June 8, 2013 Share Posted June 8, 2013 The uprights are copper tubing covering the all thread that is holding them together.Used some good copper cleaner on them and they have a nice shine to them.Nice Did you spray them with some clear acrylic to keep them from tarnishing? We did that at work on some steel conduit, after going over the pieces with medium grit sandpaper. Gave them a nice brushed stainless look.Bruce Quote Link to comment Share on other sites More sharing options...
totalcomfort Posted June 8, 2013 Share Posted June 8, 2013 Yes on the clear coat.Found that copper can be a pita to keep looking good.I buffed the tubes out then put a light coat of clear on them.Took a few tries to get it right,but overall liked the way it came out. Quote Link to comment Share on other sites More sharing options...
Sancho Panza Posted August 7, 2013 Share Posted August 7, 2013 Old thread post to subscribe Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.