I have a JL 300/4 amp..... It has front and rear croosovers on the amp....
Now.. in each of the 4 doors I have a set of Boston component speakers w/ tweeters.....

When setting the crossovers on the amp.. I have 3 choices...
1.) HP -- high pass
2.)LP -- Low pass
3.) Off

Which one do I want to set it at? Also.. My components came with their own set of crossovers that mount in the doors..... So, would I want the amp crossovers off since the bostons have crossovers already on them? Or do I set it at HP?

I also have a 250/1 for a 10 inch sub under the seat... I believe it is set at LP...

Thanks

tim

 

Hi..
You'll want to put the switch on HP (high pass) then put the crossover **** at roughly the same place as what your sub amp is at (say your sub amp is crossed over at 70Hz, then you will want your comp amp crossover at 70Hz or so. You can play around with it and see what sounds best to you. Just dont set the corssover on your comp amp higher than your sub amp, or you will 'lose' the frequencies that are between what your amps are set at. If they are really close you probably wont be able to tell though .

The crossover that come with your comps just frequencies above a certian point from going to your Mid, and frequencies below that same point from going to your tweeter. The crossover on your amp will keep frequencies below a certian point from going to your mids, which is pretty much a good deal, since your sub will take over from there on, and it will keep your mids from breaking up on low notes.

I tried to keep it simple

 

What about filter slope? 12db or 24db to comps?

What's the difference?

 

Try it both ways, see what you like. If it was me Id run it on 24.