Weird crossover question

...and how to do so...
jp008
KVRist
52 posts since 15 Oct, 2010

Post Fri Jan 31, 2020 11:38 am

What happens if you wire a simple crossover circuit in a loop to a single speaker? :hihi:

Like this: Speaker -> Crossover (with frequency control) -> Same speaker

User avatar
vurt
addled muppet weed
59237 posts since 26 Jan, 2003 from through the looking glass

Re: Weird crossover question

Post Fri Jan 31, 2020 12:23 pm

they kick you out of the shop?

jp008
KVRist
52 posts since 15 Oct, 2010

Re: Weird crossover question

Post Fri Jan 31, 2020 2:39 pm

vurt wrote:
Fri Jan 31, 2020 12:23 pm
they kick you out of the shop?
Hahaha.. seriously though, what happens? The crossover circuit was on the inside of an old speaker cabinet with a tweeter removed, but I don't want to uninstall the circuit in case I want to use the tweeter with the other 15" speaker again. So I'm thinking I'll just take the unconnected tweeter wires and do a loop into the 15" speaker. The crossover circuit has a little dial on it to control frequencies, which I'm thinking I can use as some type of LP filter on the 15", since that's pretty much what a crossover does - is send the higher frequencies to the tweeter. :ud: Am I just insane or what? :party:

User avatar
Tj Shredder
KVRAF
3844 posts since 6 Jan, 2017 from Outer Space

Re: Weird crossover question

Post Fri Feb 14, 2020 10:18 am

Get a fire insurance and ear protection and try it, make a video and post it with the warning "don't do that at home kids...". After the experiment get some electronic basics book to find out why happened what happened...
Or do it in the inverse order...

xtp
KVRian
864 posts since 4 Jun, 2006

Re: Weird crossover question

Post Fri Feb 14, 2020 11:59 pm

jp008 wrote:
Fri Jan 31, 2020 11:38 am
Like this: Speaker -> Crossover (with frequency control) -> Same speaker
I read this before, went to answer then deleted the post because i wasnt sure if i understood correctly.

Usually the signal from the amp goes to the crossover which splits the signal into high, mid and low on a 3-way or high and low on a 2-way.

2-way [forgive the poor representation]

a l---> High Pass Crossover----->High Speaker
m-
p l---> Low Pass Crossover----->low speaker

So if you have a 2-way system and disconnect the wire from the high speaker, and connect it to the low speaker, i assume you would be attempting to send the entire bandwidth to the remaining connected speaker, which means you could just as easily wire the remaining speaker directly to the amp bypassing the crossover.

If you are doing a bodgy, i would be more inclined to disconnect the unwanted speaker and secure the wires somewhere, and then wrap the ends in insulation tape.

At least this way, you wont be sending frquencies to the remaining speaker that it is not designed to handle, because the signal will still be going through the low pass-crossover before it gets to it.

Return to “DIY: Build it and they will come”