Year it could be if woofer cone is not situated facing forward below or on top of FR.
Is this response by any chance a MA FR with a under hung surround : )
Great there is your woofer and not a bad response at LP compared to up front, woofer could maybe need +3-8dB boost but that's not up to me if you happy.
If you like some pointers then job is try to get the individual woofer and FR response look like mine first graph (orange+red traces) when measured in acoustic domain using filter correction inside miniDSP to correct their reponse curves, correcting one at a time and use whatever PEQ/low shelve/high shelve/high pass/low pass filters to massage that response for each those pass bands, the important thing to understand is those slopes shall be the acoustic measured one so it doesn't help set a same named HP or LP slope as an electric filter in DSP because those drivers have their own acoustic roll off stop band that when cascaded with a electric slope will add up to final roll off slope. Find attached a zip folder with two frd files to use as target files for your 80Hz Harsh system, use REWs import frq response feature then in "All SPL" tab or "Overlays" window you can use them overlaid with measured response to continuous EQ massage response to be a clone of those curves, they set to show up at 75dB SPL point but you can always move them up or down using "Controls" feature in the varius windows. Filters to use to base EQ correction think can vary a bit maybe start use that FDW 1/6 as before, down lows you can go down to 1/4 to filter more room out and up higher in frq up til 1/14 should work fine and get you more response wiggles or grass to correct for. Hope above is understandable else can think of use miniDSP forum where there often is guides and help.
After above two pass bands are set with right acoustic roll off slopes then sum them both plus FR (mid tweeter) needs be delayed 1/80 x 0,5 = 6,25mS relative to woofer but their physical position relative to each other and LP also counts here.
EDIT and a last thing is measurements for both pass bands they shall be in same polarity so check in "Impulse" window that direction for their impulse and step response goes in positive upwards direction, and if not correct it flip their cable or flip it electrical inside miniDSP.
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MANY thanks for your answer. I now feel a little stupid, because I haven't considered to align the impulses
. I guess this would make a substantiel improvement when making the filters in Rephase!?In Rephase are your settings at the "centering" the one that is standard ie:
Centering: "middle" and "use closest perfect impulse"
Or will this step actually "misalign" the impulses IF one already does this in REW.
Can you do a near field measurement at 0.5m (remove effects of room reflections) and use FDW set to 6 cycles? Then show 3 traces (overlay plot): woofer only, wideband only, and both. Then we can see if Harsch is setup correctly. You should see characteristic rise and dip bass and small phase bumpninnotherwise flat phase if setup correctly.
Like this:
Then look at step response - that’s the “proof is in the pudding” part.
@mkane77g read the below quote from BYRTT to make your graphs more readable:
It will help to analyse things. Right now your vertical (Y) axis shows +180 dB to -240 dB... change that to the suggested 40 to 90 or 100 dB like BYRTT suggested. It will look more rough, but allows us to see it more clearly. Basically almost all graphs look like a flat line once you zoom out that much.
It will help to analyse things. Right now your vertical (Y) axis shows +180 dB to -240 dB... change that to the suggested 40 to 90 or 100 dB like BYRTT suggested. It will look more rough, but allows us to see it more clearly. Basically almost all graphs look like a flat line once you zoom out that much
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