"Knowing" what frequency your crossover is set to? Is it possible?

V

Vedder323

Banned
I am playing around with the integrated subs in my Strata Minis and I was just wondering if there is any way knowing what frequency I have my crossover set to? I mean, the exact HZ. Most plate amps have a low number/high number listed but thats it... Is there a sure way of knowing the in between?
 
j_garcia

j_garcia

Audioholic Jedi
Huh? Is the bass driver in that guy wired to the rest of the array or is it separate and driven by an LFE feed? If fed by an LFE feed, the receiver should be handling the X-over and the mini should be in bypass or set to the highest point.

The x-over isn't exactly a single point, but rather the point at which the slope of the x-over starts. The way you would know exactly what frequency you have set it to can be determined with an SPL meter and test tones. You should be able to chart where it starts to roll off, though you will likely have to run tones with it set to one of the "known" frequencies to see how those drivers are interacting with the room.
 
highfigh

highfigh

Seriously, I have no life.
I am playing around with the integrated subs in my Strata Minis and I was just wondering if there is any way knowing what frequency I have my crossover set to? I mean, the exact HZ. Most plate amps have a low number/high number listed but thats it... Is there a sure way of knowing the in between?
The crossover "point" isn't one frequency because it's A) impossible to cross over at one frequency with a passive filter placed between the amp and speaker and B) it really screws up the sound when drastic crossover slopes are used. Even with an electronic crossover, the low pass needs to mesh well with the high pass and on top of this, the way the speakers interact with the room will dictate where the crossover needs to be. A crossover is the theoretical point where the response is a certain level below the full-range response for that driver and the frequencies may be attenuated at 6, 12, 18, 24db/octave.

Yes, it's possible to get an idea of where it's crossing over- you can download one of the real-time analysis programs, like Room EQ Wizard, also called REW. It can do a frequency sweep that will tell you of acoustical issues and the overall response of your system, although it's best to have a better mic than computers have. This is more important at the high and low extremes, so you should be able to see the crossover region of your sub. It's best to play through only the front speakers first, get the best response and then add the sub, looking for the smoothest and flattest response. Starting with all speakers playing only guarantees frustration and if everything is set up correctly the first time, it will only be by coincidence.
 
BoredSysAdmin

BoredSysAdmin

Audioholic Slumlord
I am playing around with the integrated subs in my Strata Minis and I was just wondering if there is any way knowing what frequency I have my crossover set to? I mean, the exact HZ. Most plate amps have a low number/high number listed but thats it... Is there a sure way of knowing the in between?
Isn't it user adjustable ?? from 30 Hz to 150 Hz so the middle of the way is about 90Hz :D

At the top is the subwoofer power amplifier, with, from top to bottom, rotary controls for Crossover Frequency (30 Hz - 150 Hz), Phase (continuously adjustable from 00 - 1800), and Volume.
http://www.hometheaterhifi.com/volume_13_4/onix-strata-mini-speakers-12-2006-part-1.html
 
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