Arash Posted August 27, 2016 Share Posted August 27, 2016 Hey guys, You probably know I'm into business here and I have always several speakers in R&D process and I have to design crossovers for them. if you have designed crossover at least once you know what the mess is soldering many parts together on the air and testing different components like caps and inductors and resistors is a pain in the butt when you have to desolder and solder again and will be time-consuming so I just decided to build something. first I decided to design a variable crossover with rotary selectors with a lot of caps and inductors already installed in there but I came to the conclusion that this device will have it's limitations in the matter of slope and order and the caps and inductors and resistors will also play a big role. you know sometimes using two caps with the same capacity from two different vendors will result in some minor difference in the frequency response so I decides to design some blocks with input and output bananna binding posts and some spring-loaded binding posts for connecting caps, inductors you name it. I took me about 30 hours to draw it in Corel Draw I thought maybe it's a good idea to share it in the forum maybe some other dudes will do the same thing or give an initial idea of a similar project. I built 42 blocks for now and it set me back ~300bucks for everything. I'll build more blocks in future if needed. Targets: no soldering needed no limitation in crossover order and slope no mess at the designing table! saving time this is what it looks like in a sample crossover: this crossover consists of seven different blocks as following: input block which takes the signal from measurement device and devides it to three ways (Woofer, Midrange, Tweeter). I thought it's a good idea to have an overall highpass here. I can short it with a piece of wire anyway: a low pass/high pass filter which also works as L-Pad: parallel notch filter: series notch filter: an impedance equalization (Zobel): and an autotransformer stepped attenuator: and output dispatcher board with phase inverting switch for each channel: and here is actual image of one the blocks: and some pictures of parts: 1 Quote Link to comment Share on other sites More sharing options...
Honeybadger Posted August 27, 2016 Share Posted August 27, 2016 That is a neat idea, great for testing. I like it. I usually use and active crossover , and back engineer a passive from there. Quote Link to comment Share on other sites More sharing options...
Arash Posted August 30, 2016 Author Share Posted August 30, 2016 On 8/28/2016 at 3:34 AM, Honeybadger said: That is a neat idea, great for testing. I like it. I usually use and active crossover , and back engineer a passive from there. I regret why I hadn't done this earlier. it could probably hundred of hours of my time. this thing is superb! I don't know if big speaker manufacturing companies use a similar thing but I'd like to see how they design crossover Quote Link to comment Share on other sites More sharing options...
Honeybadger Posted August 31, 2016 Share Posted August 31, 2016 Not a clue how big companies do it. Any way, nice work. 1 Quote Link to comment Share on other sites More sharing options...
wvu80 Posted August 31, 2016 Share Posted August 31, 2016 I have also heard of an amateur XO designer who had bins of different components. He made his component swaps using patch wires with alligator clips on each end. 1 Quote Link to comment Share on other sites More sharing options...
Arash Posted November 10, 2017 Author Share Posted November 10, 2017 I thought maybe someone else needs something like this so hereby I bump the thread this thing has saved hundreds of hours of my time during last year Quote Link to comment Share on other sites More sharing options...
SkyDover Posted September 29, 2018 Share Posted September 29, 2018 Wow, I've often thought of how to go about this myself. This really helps and I thank you for taking the time to share this with us all!! Thanks for your well thought out and hard work, Much appreciated! 1 Quote Link to comment Share on other sites More sharing options...
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