Home theater crossover setup and level

Sony receiver str-dh590, Polk T50, T30, T15, and subwoofer Sony wa-2500...room size 13’ X 11’ ...thanks
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Willow Posts: 9,315
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"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
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Pioneer elite vhx 21
Sony 4k BRP
SVS SB-2000
Dynaudio Audience 72
Polk FX500 surrounds
Cary xciter dac
Cullen modded Sonos
Joule la-100 pre
B&k Ref 4420 amp
Cables-
Acoustic zen Satori speaker cables
Acoustic zen Matrix 2 IC's
Analysis plus crystal oval ic's
Wireworld eclipse 7 ic's
Audio metallurgy ga-o digital cable
Kitchen
Sonos zp90
B&k 1430
Tad 803 speakers
Again as willow said 80hz usually works great.
At times we have tried 100 and even 120 hz, and depending on location of sub, it can draw attention to itself, but if centered or like we do, 2 separate subs, can be a huge aid in reducing the load on a lower powered AVR and help clarity of smaller Left and right speakers, by removing the bass burden even more.
Levels are usually set by the AVRs set up program, but can be fine tuned manually.
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Yamaha RX-V377
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Harman Kardon Hk-350i
Harman Kardon Hk-........
Harman Kardon PM-665
Harman Kardon HK-775
Pioneer.......Stereo Receiver
This is assuming you are using the LFE connection with a sub cable (there are different ways to connect a sub and you didn't mention how yours is connected). Disable the crossover on your sub. If your sub does not have a dedicated switch to disable the crossover, turn the setting all the way up (NOT the volume knob). Receiver's crossover to 80 Hz (that's not set in stone, but good starting point, mine is set to 80 and I like it). Set speakers to small in receiver's settings and LFE set to "SUB" only. Setting speakers to small will alleviate some stress on your AVR's amp. Different brand subs recommend setting the sub's volume knob to different positions (9 o'clock, 12 o'clock, etc.), so read the owner's manual for your sub before using your avr's set up program.
6.1 - Pioneer Elite SC-05 | Pio BDP-51FD | Polk: RTi8, CSi5, F/Xi3, CSi3 | HSU Research VTF-2 MK4 | PS Audio: Quintet, Power Port Classic | DCF124BW x3 SC | Pangea: AC-9SE x2, 14SE, 14 PC | AQ Chocolate x2 HDMI | M850SW | OC703 Panels