Quick crossover question!

OOZMAN · #1 03-17-2011, 01:20 AM

Hi TB!

First off, as always in my threads, the foreword...

I. My apologies if some of you TB vets have seen this thread a few times; I tried searching but I didn't really know what to type in!

II. I didn't know whether to put this thread in Amps or Effects but I think it has more to do with amps, so.... yeah.

Now my question.

Is it possible to get a crossover which has low, high and full frequency outputs? My preamp has a built in crossover but it only two outputs: high and low frequencies. Specifically, I only really want the full and low frequency outputs, I don't need a high freq.

What I need, I suppose, Is just a normal crossover with a dry output or something.

Thanks TB.

peace.

Arjank · #2 03-17-2011, 01:45 AM

Which pre-amp do you have?
It only has a high and low output and no fullrange output? Does it have a DI out? If it has it will probably be a fullrange signal.

OOZMAN · #3 03-17-2011, 03:28 AM

Quote:

Originally Posted by Arjank

Which pre-amp do you have?
It only has a high and low output and no fullrange output? Does it have a DI out? If it has it will probably be a fullrange signal.

It has full freq. output (obviously), but I can set it (it's digital) so the left output is high frequencies and the right output is low frequencies. The crossover frequency is also adjustable.

But I can't set it so that it's low+full.

I probably should've added that at the start

OOZMAN · #4 03-20-2011, 04:08 AM

Bumpy bumpy

wcriley · #5 03-20-2011, 08:29 AM

Just curious.
What are you trying to achieve?

Zooberwerx · #6 03-20-2011, 08:37 AM

Which model preamp are we talking about? For the record, I've seen a couple of outboard processors (EQ? feedback destroyers?) which have a fixed mono sum sub output (xover freq. @ 100 hz).

Riis

dhomer · #7 03-20-2011, 08:40 AM

I think he wants to run one cab or driver as a sub, and the other full-range. The easiest solution would be to come up w/a passive lowpass xover and mount it in/on the sub cab. I used to run an 18" sub w/one of those Eminence px250's.. worked for me..

wcriley · #8 03-20-2011, 08:44 AM

Wouldn't it be a bad idea to run the same frequencies to mismatched cabs or drivers?

dhomer · #9 03-20-2011, 08:52 AM

Quote:

Originally Posted by wcriley

Wouldn't it be a bad idea to run the same frequencies to mismatched cabs or drivers?

In theory, yes.. Untrained ears might not know the difference.. My 1010/6 cab has an overlapping xover due to the BP102's low-mid response. Once I upgrade my PC and get some more software, I'm going to revisit this project to see if there's room for improvement.. Having played it in the rehearsal room, its not all that bad..

wcriley · #10 03-20-2011, 09:06 AM

I'm no expert, but I think there's a difference between overlapping in the mids xover region and sending the lows to mismatched cabs/drivers. At least that's been my experience.

will33 · #11 03-20-2011, 01:44 PM

This isn't making sense, running something "fullrange" defeats the purpose of having a crossover. Setting the crossover point low (100-200hz) could give you some approximation of a "bass cab + sub" sort of rig. What speakers are you running with this?

OOZMAN · #12 03-20-2011, 03:56 PM

Quote:

Originally Posted by wcriley

Just curious.
What are you trying to achieve?

Quote:

Originally Posted by will33

This isn't making sense, running something "fullrange" defeats the purpose of having a crossover. Setting the crossover point low (100-200hz) could give you some approximation of a "bass cab + sub" sort of rig. What speakers are you running with this?

I didn't want to describe my setup because usually I get 'you don't need such ridiculous speakers!' or such hate along those lines.

That in mind folks, please be nice.

I currently have two 2x15 P.A. cabs but I have found a set of 1x18 P.A. cabs on eBay also that I am interested in buying. I would like to send the full frequency to the 15s and only bass to 18s. Why? Because I want to! So, yeah!

peace

Zooberwerx · #13 03-20-2011, 04:05 PM

Quote:

Originally Posted by OOZMAN

I didn't want to describe my setup because usually I get 'you don't need such ridiculous speakers!' or such hate along those lines.

That in mind folks, please be nice.

I currently have two 2x15 P.A. cabs but I have found a set of 1x18 P.A. cabs on eBay also that I am interested in buying. I would like to send the full frequency to the 15s and only bass to 18s. Why? Because I want to! So, yeah!

peace

Okay, you're halfway to a full-blown PA rig. Might as well go all the way, install a 3 way external crossover (dbx offers some beauts), and go tri-amped with freq. points of 100 and 500-630 hz. Don't need much high end? No problem, each of the 3 bands will have its own ouput level control.

Will you be using this as a dedicated bass rig?

Riis

will33 · #14 03-20-2011, 04:29 PM

I'd use what you have and treat it like a PA and see if you like that. 150 - 250hz or so and below to the 18's, above that to the tops.

will33 · #15 03-20-2011, 04:35 PM

Probably be better served to use that rig as a full PA for your whole band instead of just a bass rig.....run everybody through it.

OOZMAN · #16 03-20-2011, 09:04 PM

Quote:

Originally Posted by will33

Probably be better served to use that rig as a full PA for your whole band instead of just a bass rig.....run everybody through it.

Yeah, versatility is one of the reasons I invested in such a rig. The 18's + 1 amp will probably be used by my band because they're poor and I'm rich, but also at parties for music. (whole rig)