I'm in a quite particular situation here, and would really need some help figuring this out.
A while ago, I got an old 3.0 pack of speakers (the rear two and center speaker from: http://www.eltax.com/en/model/227_Chroma-5-pack.html), in great shape, and an old sony amplifier (http://www.sony-asia.com/support/product/SDP-E300), which seemed pretty dusty. Anyhow, I set the thing up, but when I started playing music I've noticed that it doesn't play certain sounds. I had no idea why (the rear speakers were really quiet, the center speaker did the lion's share of playing), and am to date still only guessing; a great example is the intro guitar of Slash's Anastasia (http://www.youtube.com/watch?v=1JC0NJdfbsA), which was pretty nonexistent.
While figuring out what to do I continued using the set; it's the only true alternative to laptop-speakers in my student's apartment. But then, while playing music high-medium loud, the set all of a sudden started to play really crappy. Like, without any scratching sounds accompanying the transition, just like that. And since I kinda suspected that the flawful playing of music was the amplifier's fault, I now suspect that the amplifier, well, went.
So now I'm looking for a new amplifier. ..and I've mentioned I'm a student, I really wouldn't like to waste a lot of money on it. And since any proper amplifier costs about way too much, at least as far as I know, I was looking at cheaper options; 2.1 amps from ebay (http://www.ebay.co.uk/itm/12V-Mini-Hi-Fi-2-1-Radio-MP3-Amplifier-Stereo-Home-Car-Motorcycle-Boat-B5UT-/261309661914?pt=UK_AudioTVElectronics_HomeAudioHiFi_Amplifiers&hash=item3cd74502da or http://www.ebay.co.uk/itm/UN3F-Lepai-LP-168HA-Super-Bass-2-1-Car-Power-Amplifier-Mosfet-Power-Amplifier-/281208118021?pt=UK_MusicalInstr_Amplifiers_RL&var=&hash=item41794f5b05) . Of course my first question is, are they any good? AND, would it work out if I connected my center speaker to the bass output? The lower end of the frequency range of the center is almost subwoofer-like, isn't it? ..another alternative would then be to buy a used subwoofer, but I'd do that only if it would be WAY better than the mentioned option and than buying a cca.30€ worth 2.1 speaker system.
I know the better option would be to buy some front speakers, a propper subwoofer, and a 5.1 amp, but I really don't have the finances for that..
Please help! And don't judge me if I'm doing major mistakes, I really don't know THAT much about sound systems.. but I'd really like to make use of those speakers, they seem pretty good. ..my alternative to all this is to buy a 2.1 speaker system for about 30€, but I think that would be a shame.
Thanks for the help.