So this... Big question. So: “Do I need a subwoofer to go with my Dynaudio stereo speakers?” Well, generally you don’t need it. It really depends on your setup what you’re going to do. If you want to have compact speakers in a large-ish living room or you want to play loud but don’t want big speakers, then you don’t really have a choice other than adding a subwoofer. You might also be using it in a home-theatre setup, where we definitely recommend using a subwoofer to play back the LFE channel, which has a lot more dynamic range in the lower frequencies than the main channels do. So for that, you obviously need a subwoofer. You basically have two approaches to adding a subwoofer to a stereo system. So one thing you can do is, you can add in the subwoofer below the frequencies that the speaker itself can play, basically reaching those very low frequencies beyond what the speaker is capable of. And then you kind of align them together so the subwoofer is only playing what the speaker doesn’t play itself. The other approach is to have the subwoofer take over part of the frequency response from the main speakers. So that you're creating a crossover between them at a somewhat higher frequency. That gives you the benefit of being able to play louder with less distortion because you don't have as much stress on the main speakers. So it really depends on the system and the set-up capabilities that you have. Which is the best option? So when you’re adding a sub, a few different things happen. So obviously when the music actually has content in the very low frequencies, you’re now playing that back. To get the right sense of that space, of that room you really need the whole frequency range. One way to put it is that, in the same way as when you’re playing back a bass instrument or, you know, a kick-drum or something like that, that also includes higher frequencies above the core frequencies of the instrument. And that information needs to be played back to to give the right sense of the instrument. And the same thing actually happens with the low frequencies. You don’t get the right sense of the recording room and the listening space if you don't include those low frequencies. So even if you have a recording of a violin or some instrument that doesn't itself actually put out low frequencies, the spectral reproduction of that recording just becomes more believable when you have the full frequency present in the playback. Next question: “Do I need additional equipment in order to connect a subwoofer to my stereo speakers?” Well, the best way to connect a subwoofer to the system is to use a Pre-out on the amplifiers, and connect that to the subwoofer in parallel with the stereo speakers. So, assuming that you don’t have a crossover in your stereo amplifier, what you should do is set up the subwoofer so that it adds the output below the capability of the loudspeaker itself. It should really blend together with the speakers. With the Sub 6 we actually made this very simple for the user to do. We made presets that match each of the individual loudspeakers that we have. And that preset It's not just a cut-off of frequency. It’s actually balanced to make a perfect blend together with how the speaker itself rolls off in the low frequencies. That’s how we are mixing in the Sub 6 to perfectly blend that together. This has all been set up with our Jupiter measurement system so that it works anechoicly, so once you put it into your room, you will get a perfectly balanced system where all you have to do is kind of blend it into your living room. If you’re not doing measurement equipment – [if] you want to do it by ear – what you essentially should be doing is, the first step is try to balance the volume level, play some music with good, varied bass output. Try to adjust the volume of the subwoofer so that it has similar volume output as the main speaker. And then adjust the crossover point downwards but make sure that you don’t have a gap between the subwoofer and the main speaker. So that fills it out but on the other hand, you shouldn’t have too much of an overlap because then you will get a peak in that overlap area. So that’s really down to using some experience, using your ears, trying to adjust that until that balance between the two is good. What you want is not to have a gap, but also you don’t want to notice that the subwoofer is playing. It should just be an extension of the main speaker system. In order to find the right placement of your subwoofer there’s an old trick that might feel silly, but it really works. Put the subwoofer in your listening position. Put it literally in the sofa. And then crawl around on the floor, because this is where the subwoofer will actually be, to find the spot where you have the most bass output. And that’s the spot where., if you reverse the two, you will also get the best output when you’re in your listening position. So it might feel weird, but it really works in terms of finding the optimum spot for the subwoofer.