I set all the speakers to small and now the subwoofer works. I put the subwoofer to LFE +Main and lpf for lfe to 80Hz. Is this good?
No Alek, you are not doing everything right, just something of the things right. I strongly suggest you read and follow the step by step instructions on the Audyssey website.
http://www.audyssey.com/technologies/multeq/how-to
Or read the more detailed version linked below:
http://www.hometheatershack.com/forums/audio-processing/68407-audyssey-multeq-faq-setup-guide.html
If you want to try something quick though do the following:
1. As mentioned before, turn the subwoofer's Crossover knob to maximum to let Audyssey do its magic.
2. Set the subwoofer volume know to 9 O'clock position, also as suggested by others before.
3. Turn the phase knob to 0 degree.
4. If there are other features on your sub, such as PEQ, disable them. If there is no provision to disable them, set them to minimum.
All of the above had been mentioned previously but I want to repeat it here for your convenience. Now,
5. Run Audyssey auto setup by following instruction, keep the mic well clear of the back of your sofa, armchair or whatever. Do not worry about the speaker level or the master volume because Audyssey will take care of that for you.
6. When you are done, you will find that Audyssey may set your speakers to large again, manually change them to small.
7. For the main L,R,C, surrounds L,R, surround back L,R channels set crossover to 80 Hz.
8. Now on the "Bass" sub menu, select LFE, DO NOT select LFE+Main unless you want "double bass". Some people prefers that but you should try the normal LFE first.
9. Set LPF for LFE to 120 Hz, or higher. Note that there is no such thing as LFE crossover for the 3313, I think you got it mixed up with LPF. LPF is low pass filter. Setting it to 120 Hz will allow frequencies below 120 Hz going to the subwoofer. Movies are supposed to have up to 120 Hz bass information in the LFE channel so please do not short change the subwoofer by limiting it to 80 Hz.
Edit: Just want to clarify the LFE+Main mode a little. This mode should only make a difference if the speakers (at least the mains) are set to "Large".
This can be confusing because when there is a LFE channel, such as DD, DTS 5.1, 7.1, the subwoofer has double duties, it has to play the LFE channel, but also the low range frequencies below the crossover points of the other channels that are set to small.
That's why some people call LFE+Main as the double bass mode because in that mode the bass will be played not only by the speakers set to "large" but also by the subwoofer that otherwise will only play the LFE channel. Again, this is only applicable if at least the "Mains" (L,R) are set to "Large".