Any one know how to make bass blockers?

[Doug]

I'm putting a new stereo in my truck tomorrow and no where it this town can I find bass blockers for my speakers. If i want to get them I have to drive over an hour to tucson. Anyway does any one know what exactly they're made up of? I'm assuming they're a simple RC circuit meaning it's a resistor and capacitor acting as a high pass filter. I tried looking around on yahoo but I couldn't find anything.

 

[Hectanooga]

You mean like a crossover? Is that what you mean by bass blocker?

 

[Doug]

I mean a bass blocker. All a bass blocker is, is a high pass filter to block frequencies below a certain range, IE low bass frequency's so your speakers don't break up, Same sort of idea as a crossover except your not splitting up the frequency ranges and sending them to different speakers.

 

[Hectanooga]

Ah, yes. I follow you now. Well, I know you can get them on the internet. www.crutchfield.com has some. But, you probably want some for tomorrow. I'm from Phoenix, but I don't know of anything in your area. Sorry

 

[Doug]

Yeah I know you can get them online but I wanted to get them sooner.. Ah well, I had to drive up to tucson today just to get sub boxes for my truck.. I'll try and figure out somethin. I might just try getting the components i think i need to build them and see what happens.

 

[Hectanooga]

Try calling Crutchfield, they might be able to help you out. They have some pretty in-the-know guys working for them. Its always worth a shot.

 

[jeff96]

http://www.carstereo.com/help/cust_cr.cfm

shows you how to make custom crossovers, i would probably just order bass blockers from the internet and though as this seems alittle complicated.

 

[Doug]

I don't think they're as complicated as a crossover network, I could build one of those but I think it'll be to much of a hassle, I guess I'll have to break down and buy some..

 

[davesexplorer]

they are just simple capacitors, that link is what you want to look at, values are given to you for 6 and 12db slopes equivalent to frequencies.

here's another site for some reference too.
http://www.the12volt.com/caraudio/cross.asp#hp

edit, this is an even better reference, as it has an easy to use calculator.. simply input your speakers impedance, desired frequency cut off..

http://www.bcae1.com/passxovr.htm