The Ones | Designing the new W371 Adaptive Woofer System.

The Ones | Designing the new W371 Adaptive Woofer System.

September 16, 2019 2 By Bernardo Ryan


Welcome to part two of the video. Now it’s time to talk about low frequency reproduction and how the W371 adaptive
woofer stand can help you with it. The W371…Aki can you tell us more about this? Yes. W371 extends the directivity capability
of The Ones to the lowest audible frequencies. So you can actually create a system that is able to control how audio is
radiated at all frequencies And it doesn’t stop there because
the W371 actually gives you the ability to steer audio in the way
that is acoustically needed in your space. So you have certain benefits that are very valuable
in acoustically challenging spaces. So how does it work? From the front it looks like a very nice
speaker stand with a woofer in. Yeah we call this the Adaptive Woofer System. -Right. And it actually is using, first of all, this acoustical principle of having more than one acoustical
radiator at low frequencies so you have one woofer in the front, but
then you have another one behind the unit So here you have the amplifier unit,
feeding both drivers and then you have another woofer here. Both of these woofers are able to work
through the whole low frequency range down to the lowest audible frequencies. This unit is able to work up
to 500 Hertz frequency, so you have a choice of crossing over to The One and you take this choice based on
the acoustical requirements of the space So that frequency range covers
the modal behavior of most rooms -Yes
-… of any reasonable size. And when you have two woofers
in different locations in the room, then you get an interesting situation where each of
the woofers is experiencing the room in a different way. -Right. And that’s exactly where
the benefits of this W371 come in. Right so they’re coupling into
the modes in the room slightly differently. Yes, when you have this kind of acoustical radiator with twin woofers, woofers at two different locations you are actually
able to supply power through the nulls, so that the nulls start disappearing in
your response. So it sounds like what started as an exercise
in directivity at low frequencies, actually resulted in a product, that has more than one mode, more than
one way of using the two drivers there in it. Yes, they’re three different modes enable you to
select how W371 is radiating in in your room. The first mode, that is very interesting
is the complementary mode, where you are actually using
one or the other woofer driver when it can best radiate
audio to the listening location. Right. So then this means that you take a couple
of measurements by this GLM AutoCal system and then it calculates, filtering where you
switch between the two woofers dynamically so that the woofer that is able to radiate audio is doing that Right. So if it’s not seeing a null we can use it, but if
it is seeing a null, we won’t waste the power… We go to the other one and
then this means that the end result is going to be that you get very tight,
solid and neutral low-frequency reproduction. Something that you wouldn’t expect
in your space normally, because normal, conventional ways of building
woofers, are not able to radiate this way. Another mode would be a directive mode? Yes and the directive mode basically
then combines with The One directivity. Maybe we have to turn the system
around at this time. And…the whole front face here has been used
to control directivity at mid and high frequencies and also the top section of low frequencies. And then you have the ability to switch over to
the W371 at any frequency below 500 Hertz, according to the acoustical needs of your space. And the W371 is able to match the
directivity of The One at lower frequencies, so you get a system that is actually controlling
directivity down to the lowest audible frequencies, when you are using this principle. So this is not at all like a subwoofer then? A subwoofer is typically very low frequency, very omnidirectional, really difficult to place
in a room, because of modal behavior. Yes this is now a totally different concept. This W371 actually integrates
completely with The Ones, so this becomes a single four-way system with
controlled directivity. So it’s a new kind of loudspeaker. When you do it this way that you actually integrate
completely the low-frequency reproduction to the mid and high frequency reproduction, then you get the best system performance. You really get the ultimate point source that extends
down to the lowest frequencies and you and you get complete integration of all
frequencies to create the sound image. So if it’s a stereophonic system or a
multi-channel system, then this method of radiation creates you the ultimately best experience of
the stereo imaging in your recording. And it was so that we need one
of these units for each One? Yes, because it creates a single system with…
The One and the W371 create one large loudspeaker. Does this allow The Ones to
play louder as well? It does indeed, yes. People have been doing hundreds of hours
of research work to understand, you know what is the optimal way of placing your
loudspeaker, but you’re still faced with the practical realities of, you know, this
is my space, this is where my workstation is and I have to have my speakers here,
so there’s a limit to how perfectly you can place your system if
it has the traditional design. But this W371 gives us more freedom there. It does indeed, because
it’s able to radiate audio in a new way compared to the traditional way
of creating low frequencies So a lot of the things we’ve been
talking about are high-frequency effects, but we’ve also put a lot of effort
into low frequency reproduction. Why? Low frequency is probably the most uneven
reproduction you get from monitoring systems widely. You basically have to position
loudspeakers into walls or something to get rid of some of the effects
that you get at low frequency. It’s the first people comment on when they hear
a new system – this has got good bass or no bass. Exactly yes, but then hearing anything near
a flat frequency response is very unusual and that’s actually what
we tried to do. To get a predictable or translation
even at low frequency, because it’s then a combination
of what we hear and what we feel, so you’ve got to get the balance right. If you get it wrong, it can be quite annoying if you have,
as you say too much or too little bass actually. -And just like The Ones work with the room…
-Yeah and don’t excite it wrong, the Adaptive Woofer System
also works with the room. That’s a good way of putting it…
and also tries to make the best of it. Thanks for joining us. Now you know some of the story, some of the background behind these wonderful new products. Remember, the only way to get to
know them better still is to go and listen.