Hey there,
I hear Rizki calling my name, so here I am.
a) Totally feasible to practice with one speaker. I do it all the time and don’t even bother setting things to mono. Stereo imaging in today’s music is not such that you’ll be likely to miss the important bits (kick drum, mono anyway – even in a stereo track) and the clap/hi-hat (the other half of the beat so to speak: boom – clap – boom – clap, if you know what I mean). If it’s a semi-permanent setup it won’t hurt to set your software to mono. Just saying I wouldn’t worry about it too much.
b) Sound quality. You are not setting something up to listen to music. You are setting something up to practice DJ-ing. DJ-ing means you are in a loud environment (big PA blaring in front of you, people talking/shouting on the floor) with probably a booth speaker (or two) if you are lucky. On your other ear you have 1 half or the entire headphone to listen to the incoming track. Conditions will be less than optimal from an audio quality point of view.
c) If you plan on doing production work, the story becomes totally different. You need two good speakers (preferably a sub-woofer with it, depending on the music you produce) of a high quality. If you don’t plan on production, my personal opinion is to not get studio monitors. They are actually not made to let you listen long term at high volumes. They will tire you quicker than PA-style speakers.
d) Rokit 5s. Good speaker for production purposes (I have a set of G2s on my desk and the G3 are definitely better). However the 5s are a little lacking in the low end. I can get away with that for my purposes, but if you are practicing, having a bit more oomph is nice. So, the least I’d go for are 6s. Or 5s with the 10 sub. In the latter case having only one satellite will not do (too much lows, too little mid/high). So 1 Rokit6 would make more sense from a financial standpoint.
e) You get what you pay for. If you pay about the same for two speakers as you do for one, you can pretty much assume that the two are about half the quality of the one (not quite but to illustrate the point).
f) My personal opinion on this? Get a 10″ PA-style speaker on a stand. It will sound more like a club, have a lot more oomph, plenty of power and they are made for the specific purpose of sound reproduction at high levels. And you can take it (or them if you save up for a second one later on) with you when you start doing house parties (don’t even THINK about doing that with Rokits).
My personal favorite which I use is the Numark NPM100, which has unfortunately gone out of production, but can still be found if you look for them.
http://www.digitaldjtips.com/topic/numark-npm100-dj-monitor-speaker-a-hidden-gem/ is the post I made and the recent comments of someone who bought one (and is racing to find a second one)
Hope that helps. Greetinx.
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