Little noob advice needed with an old AVR

[fastleo63]

Hello,
my AVR is a SONY STR-DB940. I have a Behringer BFD DSP1124 and a single SVS PB1000 subwoofer, positioned on front left side (room angle) and paired with a couple of Indiana Line DIVA 262 speakers.
I don't want to equalize the DIVAs because they're sounding great and are very linear (by the way, the SONY hasn't a real DSP, but only a three-band tone control, each with 20 different frequencies selection).
With the above setup I cannot apply time delay corrections between sub and mains.
With these premises, what approach I must follow to match correctly mains+sub?
I took some measurements of both of them with 80Hz x-over on the SVS and 90Hz on the SONY (available frequencies are only 60, 90,120,150 and 180Hz), but in the response graph I have both the contribution of the DIVAs (not correctable) and the SVS, so the REW calculated filters worked correctly only on sub-bass range (20-60Hz), while the proposed filters in the 60-80Hz range, if applied, led to an excessive attenuation.
Do I have to measure (and equalize) the subwoofer separately from mains? And regarding the SVS crossover, the "LFE" is preferable, as opposed to the 80Hz setting, so letting the SONY to handle the transition from sub to mains?
Thanks for your kind attention,
Leo.

 

[Wayne A. Pflughaupt]

Let the Sony do the crossover, and disable it on the SVS sub. It’s fine to have measurements for both sub and main speakers when equalizing the subwoofer. It would be best to EQ the sub from only say, 80 Hz and below, as above that point to about 100 Hz both the sub and mains are giving the signal.

As far as the “excessive attenuation” – if by that you mean the sub’s overall level is reduced, that’s perfectly normal. Just turn the sub’s gain back up to compensate.

Regards,
Wayne A. Pflughaupt

 

[fastleo63]

Let the Sony do the crossover, and disable it on the SVS sub. It’s fine to have measurements for both sub and main speakers when equalizing the subwoofer. It would be best to EQ the sub from only say, 80 Hz and below, as above that point to about 100 Hz both the sub and mains are giving the signal.

As far as the “excessive attenuation” – if by that you mean the sub’s overall level is reduced, that’s perfectly normal. Just turn the sub’s gain back up to compensate.

Regards,
Wayne A. Pflughaupt

Thanks a lot for your support. To be more precise, with the "excessive attenuation" I mean that if I measure only the SVS and equalize it, the subsequent measure (sub only) is coherent with REW predicted response.
But by measuring both sub + mains emissions and calculate filters, I was supposing that suggested corrections would have been too much "light", and not "excessive"...
The gaps caused by the excessive correction reside in the 50-80Hz range. Could they have been generated by a phase inversion between sub and mains?