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pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 5:46 pm
by fever606
so long story short i was daydreaming about ways to have certain effects on certain strings of the guitar, which is complicated enough. then i started thinking about it in terms of high and low registers and less about the strings. so what i came up with is what i will call the "frequency splitter"...
basically, signal comes in and you have a knob that determines the frequency at which the signal splits. everything above this point goes to one output, everything below goes to another. kinda like a filter, but instead of rolling off the frequencies above (or below) the cutoff, you send them to a separate output.
knowledgable folks: is this feasible? does this already exist (a cursory search says "no")? is this a solution to a problem that does not exist?
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 5:54 pm
by FancyMike
I don't know about a pedal version that would work well enough but what you're looking for is generally called a crossover.
edit:
http://www.rolls.com/product.php?pid=SX21 ???
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 5:56 pm
by bigchiefbc
fever606 wrote:so long story short i was daydreaming about ways to have certain effects on certain strings of the guitar, which is complicated enough. then i started thinking about it in terms of high and low registers and less about the strings. so what i came up with is what i will call the "frequency splitter"...
basically, signal comes in and you have a knob that determines the frequency at which the signal splits. everything above this point goes to one output, everything below goes to another. kinda like a filter, but instead of rolling off the frequencies above (or below) the cutoff, you send them to a separate output.
knowledgable folks: is this feasible? does this already exist (a cursory search says "no")? is this a solution to a problem that does not exist?
You're describing a crossover, and yes it exists, although usually in rack form. My band uses a dbx 223 crossover in our PA to send the lows to the subwoofers and the highs to the mains.
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 6:01 pm
by fever606
yep, that is pretty much exactly what i was thinking about. that rolls even has level adjustment for the high and low outputs.
awesome. and self-

because it should have occurred to me.
thanks, mike and big chief!

Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 6:08 pm
by dubkitty
oh, is that little thing ever hip. i'll bet it'll be ideal once i get my two-amplifier stereo setup happening. i want to do a project with just me and a drummer where i can generate bass lines along with my guitar playing, and splitting the bottom strings into a octave doubler post-crossover would be just the trick.
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 6:09 pm
by Obulus
You can also get one of these with the breakout box:
http://www.ubertar.com/hexaphonic/If I ever have the money and a good guitar for it, I'll do it for sure!
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 6:16 pm
by coldbrightsunlight
I've definitely seen some builders make crossover splitters but I can't remember who right now. Probably most builders here would do it for you, unless I'm wrong about how difficult it is.
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 6:23 pm
by sonidero
This out left...

This out right...

Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 6:26 pm
by fever606
Obulus wrote:You can also get one of these with the breakout box:
http://www.ubertar.com/hexaphonic/If I ever have the money and a good guitar for it, I'll do it for sure!
yeah, but i kinda wanted to not split up each string. the crossover nails it... high notes (no matter what string they are on) go here, low notes go there.
sonidero wrote:This out left...
bossge7.jpg
This out right...
bossge7.jpg


yes i suppose that would work too!
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 6:38 pm
by Obulus
Yeah, I think six outs is a little overwhelming too, but I want to try it anyway. The possibilities must be endless!
And it's a good way to justify having at least six fuzzes too
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 6:44 pm
by tommasters
There's that big bottom that tym guitars makes but its pretty pricy for what it is...
http://www.tymguitars.com.au/?shopp_product=tym-big-bottom-v2
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 6:51 pm
by FancyMike
That's a pricey clean blend
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 7:22 pm
by Glenouille
fever606 wrote:so long story short i was daydreaming about ways to have certain effects on certain strings of the guitar, which is complicated enough. then i started thinking about it in terms of high and low registers and less about the strings. so what i came up with is what i will call the "frequency splitter"...
basically, signal comes in and you have a knob that determines the frequency at which the signal splits. everything above this point goes to one output, everything below goes to another. kinda like a filter, but instead of rolling off the frequencies above (or below) the cutoff, you send them to a separate output.
knowledgable folks: is this feasible? does this already exist (a cursory search says "no")? is this a solution to a problem that does not exist?
It's been the main tool on my pedalboard for years as it is key in the way I write tunes and play them... I use to have a Paralooper from Moosapotamus and the below will replace it (soon hopefully, but he's been working on it for a while):

Top row is for part A (highs) of the signal, next row is part B (lows), bottom row is if you return all part of the signal into the pedal instead of going to 2 separate amps.
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 7:30 pm
by Bellyheart
I use to dream of the hexaphonic when I was a kid...didn't know it's a reality now...awesome!
Re: pedal i want: frequency splitter
Posted: Mon Oct 08, 2012 7:43 pm
by ryan summit
dubkitty wrote:oh, is that little thing ever hip. i'll bet it'll be ideal once i get my two-amplifier stereo setup happening. i want to do a project with just me and a drummer where i can generate bass lines along with my guitar playing, and splitting the bottom strings into a octave doubler post-crossover would be just the trick.
this is what im workin on at the moment as well
im usin the stereo outs of the ps 6
one to a peavy bass amp with the ad9
the other through delaylab into randall410
i know im kinda just hoping that the bassamp
will pump out the lows
and the randall will do the highs
but i didnt know somethin like this existed
or think of usin equalizers, at least one to the bass amp
im leavin for space in few minutes
glad i checked in