How Move the Frequency set up on Yamaha A/V RX-V630

[Vallenato]

I have A/V receiver Yamaha RX-V630 and Reading the Manual I can not find how I can move the Frequency set up..
the Manual said:
Notes
• The cut-off frequency of the SUBWOOFER jack is 90 Hz.
but I don know if this set up can be modify or always is keeping in 90 hz
thanks in advance

 

[Adam]

Hi. On that receiver, the crossover frequency is set at 90 Hz and cannot be modified in any of the menus.