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Dayton Audio RS100T-8 4" Reference Woofer Truncated Frame
Impedance correction for a line array
For a huge line array (36 units), impedance correction looks very important for this driver. There are many different equations for solving this, the ones on your website seem to suggest the following:Circuit: 6 parallel chain-gangs of 6. (Each parallel chain would have its own correction network.)R_corr = 1 1/3 ohms.C_corr = 947uFThe number for the capacitor seems rather astronomical to me. Did I work the numbers right? What watt rating would I need on the resistors -- assuming the impedance network is not to be the limiting value on the power handling of the speaker?I'm still trying to figure out how I would design a box and whether/what ports I'll need.
According to the software we use here (X-over Pro, referenced below for your convenience), the resistor should be 1.067 ohms, and the capacitor would be 107uF.
Date published: 2011-11-14
What size enclosure would be suited best for this driver both sealed and ported?
I recently completed a project with this driver in our new 0.20ft³ knock-down cabinets, using a 1-1/2" x 4" port, they sound very nice. I've linked these products below for your convenience.
Date published: 2012-01-23
I'm planning on tackling my first three way speaker. I have pretty much no skill in designing a crossover and plan to use a pre made three way Dayton audio crossover.After modeling this in WinISD pro alpha, it shows drop around 1200 HZ in almost every sealed enclosure. Is this WinISD messing up, or true? I will list the items I plan on using below.If I apply a 6 DB boost at 3000 HZ with a Q of 1, it seems to flatten it out, and then I apply a butterworth 3rd order crossover at the points I'm planning on using.The thing is, I'm not even sure what A "Q" is, and I'm sure there isn't even a "3rd order butterworth" low and high pass crossover.Anywho, if put this in about .9 Cubic Feet will this driver provide a flat rescponce from 300 HZ to 3000 HZ?Sorry for my lack of Knowledge, I'm still 13 and still learning.
Andy, I can completely relate to the confusion as I had similar questions when starting out in audio years ago. The good thing is, you are asking questions!WinISD, as a box modeling program, and will give you an idea of low frequency response in a particular cabinet. WinISD doesn't take into account what drivers (speakers) do, with regards to frequency response, as far as the midbass, midrange, and highs are concerned. I would recommend that you only use WinISD to get an idea of what effect a box has on a driver below 250 Hz and refer to the specification sheet above that.In time you will learn that the face of the box (the baffle) also affects frequency response in the midrange band. If you want to learn more about speaker design, I would highly recommend you join our Tech Talk message board (http://techtalk.parts-express.com/) and post the design you want to accomplish there and ask for crossover help. There are plenty of willing participants to guide you along the way.Hope this helps!Mike
Date published: 2012-08-03