help with crossovers/speaker wiring?

A

Alaking

New member
I couldn't find a better place to post this, but here i go:

I am trying to build some speaker cabinets (for the first time) for a couple speakers I ripped out of my old Kimball organ. I have been trying to research this stuff a bit, but I'm having trouble finding clear, and basic explinations.

Basically all I am trying to do is have this cabinet/speaker act as a monitor - that would be plugged into a powered mixer (I really don't care about sound quality - it's more of a learning experiment).

Now... what do I need to have hooked up to the speakers in the cabinet? Do I need a "crosspver network"? If so, what kind should I go with?


thanks a bunch for any help!
 
I have a 12" speaker, and an 8" speaker.... I was assuming I could hook both of these suckers up - but like I said, I don't know a lot about speakers and all.....

I also have a 10" speaker (form my old organ), but I wasn't planning on using it for this project.

thanks for the reply.
 
Alaking,

A 12" and 8" would be more like the bottom 2/3rds of a 3-way speaker.... i.e. a woofer, midrange, and tweeter arrangement. If I were you I'd just stick with a 2-way (woofer-tweeter) arrangement for my first attempt. In either case, you're going to need a tweeter if you want to hear any semblance of the high frequency range. You can buy something like this for under $10. http://www.partsexpress.com/pe/show...8&St3=-63172213&DS_ID=3&Product_ID=7308&DID=7

Then you'll need a crossover. You can find diagrams and calculators here. http://ccs.exl.info/calc_cr.html#first A simple First Order is the best way to start. I suggest a crossover frequency of 2000 Hz. The impedance of the tweeter I mentioned is 8 Ohms. You'd enter these two values along with the impedance of your woofer into the calculator to get the values of the required capacitor and inductor. Hopefully the impedance is marked on the back of the woofer. Lets say your woofer is 8 Ohms. This would yield a capacitor value of C1= 9.9 uF and an inductor value of L1= 6.4 mH. You can also buy these from Parts Express. http://www.partsexpress.com/pe/pshowdetl.cfm?&PartNumber=027-568&DID=7 and http://www.partsexpress.com/pe/show...10&St3=52579121&DS_ID=3&Product_ID=5811&DID=7 These nearest values are fine.

Put them in a box. Wire it up like the circuit diagram, and you're good to go.:)

Thomas
 
You must log in or register to reply here.
Back
Top