I've been looking for 2.1 speakers for my desktop pc and came across these.
The reviews are very good and the price of £14.99 includes free delivery. Amazon are selling these for £25.13
Need more bass for an affordable price? With a unique Max-X band pass and ported subwoofer design, Labtec's Pulse 485 2.1 speaker system delivers the advanced bass response you're looking for. In addition to great bass, the Labtec Pulse 485 includes simple bass and volume controls for a customizable listening experience. The flat-panel satellite speaker design not only looks great, but it also helps save valuable desk space.
* Max-X high-excursion subwoofer driver creates clean, deep bass
* Band-pass ported subwoofer with wood cabinet delivers solid, distortion-free lows
* Sleek, thin profile design optimizes sound while saving space
* Three-piece system hooks up easily to PCs, CD and MP3 players
* Separate volume and subwoofer level controls provide personal sound adjustment
* AC power adapter and color-coded audio cables included
* One-year limited warranty
* Total RMS power: 28 watts RMS (8W x 2, + 12W)
* Total Peak power: 56 watts
* Frequency response: 48 Hz 20 kHz
o Satellites: 2.75" high excursion driver
o Subwoofer: 5" Max-X ported band pass driver
* Speaker dimensions:
o Satellites: (H) 7" x (W) 4" x (D) 2.25"
o Subwoofer: (H) 7.5" x (W) 6" x (D) 10.5"
* Signal to noise ratio: >80db