Is this how a Subwoofer Crossover is supposed to work?


I bought two Starke SW12 subwoofers that I installed.  So far I'm not particularly happy with them.  They are way too loud even with the volume set almost to off.  More importantly, I'm having trouble integrating them into my system and I'm wondering if that is because their crossover setting is really functioning as I understand a crossover should. Attached please find measurements from Room Equalization Wizard with SPL graphs of the two subs (no speakers) taken at my listening position with the crossover set at 50 Hz, 90 Hz, and 130 Hz. Ignore the peaks and dips which I assume are due to room nodes.  All of those settings appear to actually have the same crossover point of 50 Hz. All that changes is the slope of the rolloff in sound levels. This isn't how I thought a properly designed crossover was supposed to work.  I thought the frequency the levels would start to roll off would change, i.e. flat to 50 hz then a sharp drop, flat to 90 hz then a sharp drop, etc. etc..  But Starke says this is how a subwoofer crossover is supposed to work.

https://www.dropbox.com/s/8x4cr32pagwg48i/Two%20Subs%20Different%20Crossover%20Points%20No%20Speaker...
Any experts on here with an opinion about this?  Is it possible to buy an inexpensive active crossover that I could use in place of what is built into these subs?
pinwa
Erik asked: "Then let me ask this question another way. Looking at the OP’s original data, have you ever seen 2 subs start out that poorly in a room?"

I’ve never measured two subs in a room.

To my eyes, they should look a lot better than that, if configured well, but since I can't tell what is by design, and what is interference I think the OP would be well served by eliminating 1 major variable in his measurements. Plus, it’s fast, and cheap to do.


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audiokinesis

"Your measurements look to me like they are in the ballpark for a variable-frequency second-order lowpass filter.

I can elaborate if you’d like"

Please do since I don't know what that is.
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