Many shops in Low Yat Plaza will carry the merchandise to your car if requested (provided of course its parked downstairs). However you may want to consider getting a cheap foldable trolley (such as the one shown below) to help carry the heavy speaker up to your house/condo...

Could be broken grounding connections, which would reduce the bass. (such as internal broken wire problem). Also make sure the plugs are properly plugged in (twist around and see if there are interruptions and changes). And I would recommend using contact cleaner instead of WD40 to clean the plugs and sockets...

Can find those hand trolleys at places like AEON, Carrefour and Tesco. Costs way less RM100 only (the one I've had costs me only RM45 but that was quite some time ago, in terms of years)...

Some laptops have slightly weak outputs from their integrated audio system. Both PCI soundcard and external USB DACs are essentially the same thing, just packaged differently. I don't think PCI sound cards can fit inside a laptop, thus a more logical choice would be an external USB DAC. You may want to try putting that subwoofer in a down-firing position with the woofer facing the floor (reflecting the bass directly off the floor) and see. Make sure there is a substantial air gap between the woofer and the floor...

Kinda dfficult to find/see any S2000 around the shops, plus pretty pricey too (one of the most expensive models from Edifier). And which "SuperM" is that? Is it the small Bluetooth thingy? If it is then that is worlds apart when compared to the S2000 (including the price also)....

This post has been edited by lex: Aug 24 2014, 05:53 PM

If its still under warranty then send for RMA. Most likely those main big filter/smoothing capacitors right after the bridge rectifier diodes. Had the same problems before, read the post here: Special Interest -> Home Entertainment -> Audiophiles-> Audio Capacitor, Where to buy? -> Post #100... Replacing those capacitors solves the problem. Some good capacitors and soldering work required...

Yes, look for bulging capacitors. But do note that sometimes bad capacitors may show no signs externally and may have to remove the capacitor from the board to measure it. As for those high quality capacitors. try buying from online electronics stores such as RS Components, element14/Farnell/Newark, Mouser and Digikey. Many of those capacitors found selling in Pasar Road are mostly counterfeits (remarked low quality el-cheapo capacitors)...

Edit: My full re-capping of Edifier M3300...

This post has been edited by lex: Aug 30 2014, 03:39 PM

Yes, I do repair/upgrade speakers though not operating from shop at the moment. For further details, just use the PM method to communicate. As for upgrading capacitors, they do improve sound quality by quite a bit...

There are other plans for that M3300 as well, such as upgrading those TDA2030A to TDA2050A (up to 32WRMS or 50W peak per channel), changing to metal film resistors, etc. But at the moment, on hold as very busy (with lots of repair work) at the moment...