--- In DTXpress@yahoogroups.com, "Keith" <keith@k...> wrote:
> Ed,
>
> I am impressed with the Logitech and have not heard any distortion
> from it yet, and it goes pretty loud. The reason I chose it was
that
> it uses a sub-woofer which, while a little smaller than the Yamaha
> one, is claimed to be a proper 6th order design. I spent a lot of
> time looking at speaker design for Hi-Fi a while ago and decided
that
> a well designed sub-woofer can give seriously good bass. It is what
> Bose have been using for years (and I thought they had patents on
some
> designs). I am dubious as to the design pedigree of some of the
> keyboard speaker enclosures.
>
> Yesterday at the end of my drum lesson I cranked up the volume and
let
> the drum teacher have a play and he seemed impressed, particulalry
> with the floor tom sound (Room1 Lo). Still no distortion.
>
> There is a sub-woofer adjustment knob on the wired remote which is
> useful because in my small room the bass resonates a bit if it is
> turned up too far. It helps to balance out the midrange and bass
as well.
>
> I cannot yet compare with a keyboard amp but when I get chance I am
> hoping to get round to meeting John Allsop who is local and has the
> Behringer KX1200. I was planning on buying one of those but it got
> the thumbs down from 'er indoors when she saw a picture and the
> dimensions! The Logitech is also half the price.
Keith,
It sounds impressive for computer-system performance. Bose holds the
patent on dual-chamber 6th-order design. Though this design is said
to increase efficiency and decrease audible distortion, it apparently
is a bitch to construct and puts the driver at risk for damage unless
the build quality is extraordinary or some serious means of negating
the limits on driver excursion enter into it. I've never heard a
reputedly high-quality Bose subwoofer in action, but the scuttle is
that Bose's transient performance isn't too good, and the overall
effect is more suited to something like sound reinforcement than
accurate musical reproduction. I've been a high-end audio enthusiast
for a long time--listening and reading, anyway--and Bose usually gets
short shrift, if any, in the press. But there apparently isn't a
subwoofer design in existence that doesn't have its drawbacks--the
most obvious being a tradeoff between punchy and deep. Of course, if
money and size are no objects, the odds of a more complete success go
up considerably, but who has the money or the space? I suspect that
many of the pro audio designs are maximized to protect the elements
from heavy abuse rather than to optimize fidelity. Personally, I
don't like boomy and indistinct; I like my toms and kick to have snap
and at least a reasonable frequency response. A home theater
subwoofer that doesn't have to meet the needs of critical music
appreciation could easily thrive on high efficiency and a bottom end
of 40Hz or so, even if it really plays only one note. Given that
dipoles have become an important part of the THX home theater
environment, especially in the surround channels, a subwoofer of that
type might be right at home. Since E-drum kicks and toms aren't note-
specific either, ballpark accuracy in the bass frequencies could
suffice there as well, as long as the elements were able to handle
the huge demands placed on them.
Ed
