mopardave Posted April 17, 2023 Share Posted April 17, 2023 Hi Dean. I bought a pair of you Universal crossover from Kevin . You built them for his khorns, but he went a different direction, so now I have them in my CornScala using a B&C DE85 TN mid driver(500-18000) and your crossover has a 47uf filter. The woofer is a Crites stamped basket. Not sure this crosses over properly. Do you think I should have a different filter with my combo? Link to comment Share on other sites More sharing options...
geoff. Posted April 17, 2023 Share Posted April 17, 2023 A 39uF cap would cross around 500hz. Does the squawker get a little “crackley” sometimes? That’s when I know I’ve pushed it too far. Link to comment Share on other sites More sharing options...
mopardave Posted April 17, 2023 Author Share Posted April 17, 2023 22 minutes ago, geoff. said: A 39uF cap would cross around 500hz. Does the squawker get a little “crackley” sometimes? That’s when I know I’ve pushed it too far. No, it really sounds quit nice. I was just curious if I might be missing something. Link to comment Share on other sites More sharing options...
mopardave Posted April 17, 2023 Author Share Posted April 17, 2023 27 minutes ago, geoff. said: A 39uF cap would cross around 500hz. Does the squawker get a little “crackley” sometimes? That’s when I know I’ve pushed it too far. So do you think the crossover would cross at 400 with a 47uf? Link to comment Share on other sites More sharing options...
Deang Posted April 18, 2023 Share Posted April 18, 2023 The parts are all crooked. ¯\_(ツ)_/¯ What horn are you using? Did Kevin teach you how to readjust the autoformer? Send me a PM, or email at dgwescott@gmail.com Thanks, Dean 1 Link to comment Share on other sites More sharing options...
geoff. Posted April 18, 2023 Share Posted April 18, 2023 47uF is the value for a 400Hz cross from the woofer. But, as I understand it, it is an acoustic crossover determined by the combination of everything going on in your speaker. If it sounds nice your DE85s aren’t unloaded. At least not at the levels you enjoy. Someone turning it to “11” may get them barking, or fry them. Link to comment Share on other sites More sharing options...
mopardave Posted April 18, 2023 Author Share Posted April 18, 2023 19 minutes ago, Deang said: The parts are all crooked. ¯\_(ツ)_/¯ What horn are you using? Did Kevin teach you how to readjust the autoformer? Send me a PM, or email at dgwescott@gmail.com Thanks, Dean Zxpc horn. I have the taps as they should be, so yes. Link to comment Share on other sites More sharing options...
Deang Posted April 18, 2023 Share Posted April 18, 2023 That place sells all kinds of horns. Please send me a link to the horn you are using. You are probably fine. Link to comment Share on other sites More sharing options...
geoff. Posted April 18, 2023 Share Posted April 18, 2023 …11 x 17” ? Link to comment Share on other sites More sharing options...
Deang Posted April 18, 2023 Share Posted April 18, 2023 Need the Fc. Link to comment Share on other sites More sharing options...
mopardave Posted April 18, 2023 Author Share Posted April 18, 2023 The B&C Speakers DE85TN-8 2" titanium compression driver is an example of the transducer engineering excellence that has made this Italian company an industry benchmark. The DE85TN-8's evolution is traceable to its ubiquitous predecessors, the DE75 and DE85, found in many famous concert-level touring speaker systems. FEA-optimized ceramic ferrite magnet materials produce the driver's high flux density, and a copper cap on the DE85TN's pole piece reduces inductive losses and extends high frequency response. Specifications: • Power handling: 110 watts RMS/220 watts program above recommended crossover of 1 kHz/12 dB slope • VCdia: 3" • Impedance: 8 ohms • Frequency response: 500-18,000 Hz • SPL: 107 dB 1W/1m • Dimensions: 6.7" diameter x 2.5" depth • Net weight: 9.9 lb. • Replacement diaphragm available. Link to comment Share on other sites More sharing options...
mopardave Posted April 18, 2023 Author Share Posted April 18, 2023 3" VOICE COIL - HIGH EFFICIENCY, GOOD POWER HANDLING & CLEAN HIGHS! DE85TN Item Price: $241.81 SPEAKER MODEL DE85TN SPECIFICATIONS Throat Diameter 2" / 50mm Impedance 8 ohms RMS Power Rating 110 Watts Program Power 220 Watts Frequency Response 500Hz - 18kHz Recommended Crossover 1.0KHz Sensitivity (1W/1m) 107dB Voice Coil Diameter 3" / 75mm Winding Material Aluminum Inductance 0.14mH Diaphragm Material Titanium Flux Density 1.8T MOUNTING INFORMATION Overall Diameter 6.7" / 170mm Mounting Holes (4)M6 holes on 90°- 4" Dia. Depth 2.5" / 64mm Net Weight 9.9 lbs./ 4.5 kg. Link to comment Share on other sites More sharing options...
mopardave Posted April 18, 2023 Author Share Posted April 18, 2023 Just now, mopardave said: 3" VOICE COIL - HIGH EFFICIENCY, GOOD POWER HANDLING & CLEAN HIGHS! DE85TN Item Price: $241.81 SPEAKER MODEL DE85TN SPECIFICATIONS Throat Diameter 2" / 50mm Impedance 8 ohms RMS Power Rating 110 Watts Program Power 220 Watts Frequency Response 500Hz - 18kHz Recommended Crossover 1.0KHz Sensitivity (1W/1m) 107dB Voice Coil Diameter 3" / 75mm Winding Material Aluminum Inductance 0.14mH Diaphragm Material Titanium Flux Density 1.8T MOUNTING INFORMATION Overall Diameter 6.7" / 170mm Mounting Holes (4)M6 holes on 90°- 4" Dia. Depth 2.5" / 64mm Net Weight 9.9 lbs./ 4.5 kg. Just now, mopardave said: 3" VOICE COIL - HIGH EFFICIENCY, GOOD POWER HANDLING & CLEAN HIGHS! DE85TN Item Price: $241.81 SPEAKER MODEL DE85TN SPECIFICATIONS Throat Diameter 2" / 50mm Impedance 8 ohms RMS Power Rating 110 Watts Program Power 220 Watts Frequency Response 500Hz - 18kHz Recommended Crossover 1.0KHz Sensitivity (1W/1m) 107dB Voice Coil Diameter 3" / 75mm Winding Material Aluminum Inductance 0.14mH Diaphragm Material Titanium Flux Density 1.8T MOUNTING INFORMATION Overall Diameter 6.7" / 170mm Mounting Holes (4)M6 holes on 90°- 4" Dia. Depth 2.5" / 64mm Net Weight 9.9 lbs./ 4.5 kg. This is all i can find on driver and horn. Link to comment Share on other sites More sharing options...
mopardave Posted April 18, 2023 Author Share Posted April 18, 2023 3 hours ago, Deang said: That place sells all kinds of horns. Please send me a link to the horn you are using. You are probably fine. 11" x 17" ABS 2" Bolt-On Long Throw Horn 90° x 40° For 2" Exit Drivers (zxpc.us) Link to comment Share on other sites More sharing options...
Deang Posted April 18, 2023 Share Posted April 18, 2023 I don’t know enough about titanium diaphragms to be able to tell you at what point it becomes unhappy with you. If it was my set up, I would probably change the 47uF capacitors to 33uF and not drive the system to obscene levels. 1 Link to comment Share on other sites More sharing options...
mopardave Posted April 18, 2023 Author Share Posted April 18, 2023 1 hour ago, Deang said: I don’t know enough about titanium diaphragms to be able to tell you at what point it becomes unhappy with you. If it was my set up, I would probably change the 47uF capacitors to 33uF and not drive the system to obscene levels. I can do that. I dont listen at 95+db levels anymore. 70-90 is about where i live and i now have a 300b amp, so compfortable listening is what i do. Correct me if im wrong, but from what i read it looks like its currently crossed at about 400 with the 47uf and the mid driver only goes down to 500, so wouldn't that leave a hole? Where will the 33uf cross at best guess? Where do i find those caps/filters? Thanks Dean. Link to comment Share on other sites More sharing options...
Deang Posted April 18, 2023 Share Posted April 18, 2023 Way at the top, I asked that you send me a PM or email. 33uF is roughly 600Hz, which at least gets you above the Fc of the horn. You can buy them any place that sells capacitors. If you want the same type capacitor, just read the label. The 2.5mH is the same value the Type B uses, so you know it's occupying some of that same space around 600Hz. The Universal isn't as "universal" as everyone thinks it is. It was designed to be used with the K-55 and K-400/K-500. It was called "universal" because it could be used in the Klipschorn, La Scala, and Belle Klipsch. The K-400 has an Fc that is almost a full octave below the crossover point (280Hz). It can be tweaked to be used in the Cornwall or Heresy. It wasn't designed to support any and all driver/horn combinations. Kevin, and some others can get away with it because they are using larger horns that have a lower Fc in combination with something like the BMS or B&C DCM50 that are designed to go low. ZXPC provides no real useable data on that horn. Without measuring, there is simply no way of knowing what is going on with that network/horn/driver combination. 33uF will probably prevent the diaphragm from hitting the phase plug, but as far frequency response, distortion, etc., - who knows. 1 Link to comment Share on other sites More sharing options...
mopardave Posted April 18, 2023 Author Share Posted April 18, 2023 2 hours ago, Deang said: Way at the top, I asked that you send me a PM or email. 33uF is roughly 600Hz, which at least gets you above the Fc of the horn. You can buy them any place that sells capacitors. If you want the same type capacitor, just read the label. The 2.5mH is the same value the Type B uses, so you know it's occupying some of that same space around 600Hz. The Universal isn't as "universal" as everyone thinks it is. It was designed to be used with the K-55 and K-400/K-500. It was called "universal" because it could be used in the Klipschorn, La Scala, and Belle Klipsch. The K-400 has an Fc that is almost a full octave below the crossover point (280Hz). It can be tweaked to be used in the Cornwall or Heresy. It wasn't designed to support any and all driver/horn combinations. Kevin, and some others can get away with it because they are using larger horns that have a lower Fc in combination with something like the BMS or B&C DCM50 that are designed to go low. ZXPC provides no real useable data on that horn. Without measuring, there is simply no way of knowing what is going on with that network/horn/driver combination. 33uF will probably prevent the diaphragm from hitting the phase plug, but as far frequency response, distortion, etc., - who knows. Sorry, I over looked that. Will PM Link to comment Share on other sites More sharing options...
Marvel Posted April 18, 2023 Share Posted April 18, 2023 Should have got this horn... it's 90x60 and I think, a more accurate clone of the 510. If that doesn't matter then ever mind. https://www.zxpc.us/product-p/333537431240.htm Link to comment Share on other sites More sharing options...
Marvel Posted April 18, 2023 Share Posted April 18, 2023 But they don't have specs for most of what they sell. Link to comment Share on other sites More sharing options...
Recommended Posts