ur woofer should not be placed in a closed area especially under the table. most of the ppl do this mistake.. they think the scene of table shaking when u listening to the songs is cool.. sigh..
try to put the woofer at the open space.

my friend pairs up aurilium with vs4121... it did improve the sound, especially the bass, tighter..
but overall it's not a very significant improvement..

basicaly, different soundcard, different usage, different sound :
aurilium -> pure music
SB series -> gaming

use equaliser then

ur laptop sure has soundcard, else u wont hear any sound when u plug in the speaker or listening to music through ur laptop speakers..

i think he said laptop doesnt have a decent soundcard. laptop uses on board soundcard. the sound quality is bad compared to others soundcard that pluged into those desktop's slot. so, there is a solution for laptop user which is using ac external soundcard via usb connection.

wrong wrong wrong
LD2+ is a headamp, and it can be used as pre-amp too. the primary usage of ld2+ is still a headamp although it can be used as pre-amp.

anyway, it's not recommended to use a pre-amp to power up an active speaker. active speaker already came with built-in amp to power them up with sufficient gain. adding another pre-amp may over-amplify the multimedia speaker and then cause the sound to become over-whelming. however, i have tried using ld2+ as pre-amp with my s4.1. the pre-amp of ld2+ seems to be quite low-powered and it introduced some 'warm' (valve) sound to my speaker. eventually they sounded nice to my ear.