Selling this because with my small room and new speakers on order it is not something I will need any longer. I'm the third owner, and it has not been used at all by any of us. Still in original packaging with original manuals, etc. $220 plus shipping (I'll absorb the paypal.) Original cost $399. Greatly prefer to sell in conjunction with my ULW-10 sub listed under speakers. Package price is $550 plus shipping, and preference will be given to buyer who wants the package deal. A very cool thing, but I just have no use for it any longer. PM with questions.
Description from AV123 web site:
R-DES is a product that nearly EVERY subwoofer system on the planet needs. That
is a bold statement and it's not just marketing fluff. You may not even realize
you need it but once you hear the difference it makes, you can't go back.
R-DES is a device that sits in front of your subwoofer that allows you to compensate
for the degrading effects that the room has on your subwoofer’s response. Ideally,
you want your sub to produce a flat frequency response so that all bass sounds are
heard evenly and at the same volume. This is the most natural and accurate way that
bass is reproduced. RDES can help achieve this “ideal” situation.
Your room contributes a large amount to the sound you hear from your system. In
fact, MOST of the sound you hear is actually sound that has bounced around your room
quite a bit. This is especially the case in the bass region because rooms don't absorb
low frequencies very well. With this increase in system volume from all the sound
bouncing around comes some problems. Specifically, your room starts to resonate at
certain frequencies. ONIX Graph Paper along with the provided test tones can help
you find these resonances in your room. ONIX R-DES gives you the ability to reduce
the level of those resonances to give you a more balanced bass response.
To really understand how to use R-DES to its fullest potential you really need to
understand the concept of Frequency Response. Music does not sound like a lot of
individual tones, but that is in fact what music is made up of. All music can be
seen as a combination of tones of specific frequencies that occur at specific times.
For instance an acoustic bass note may have a fundamental pitch of 100Hz, or 100
cycles per second (it also has additional harmonics that are multiples of that fundamental
pitch). When a piano hits a middle C note on top of that, that music contains all
of its tones as well. These simply add up to create music.
Now, when music is played back over speakers in a room, the speakers and the room
can’t play every frequency, or tone, at exactly the same level. This can be seen
in its Frequency Response. It is a measure of how a system plays back different tones
at slightly different levels.
A non-uniform Frequency Response is a flaw in the playback system. Some notes will
sound louder than others. Some will resonate more than others. None of this was in
the original music, it is created by your speakers and your room. Now, most speakers
do a pretty good job of playing things at similar levels. +/- 3dB is a very common
target for speakers because this change in level is not very noticeable. But rooms
can cause enormous aberrations in the Frequency Response. These variations can be
up to 20dB! This is very noticeable and is commonly referred to as one note, flabby,
or weak bass. That is because certain tones can be so much louder than everything
else. By compensating for those extra loud tones, you can bring your system’s Frequency
Response back to nearly uniform, which will significantly increase your listening
pleasure.
With R-DES, it's easy to correct for these aberrations. All you need is a SPL meter
and your PC! With the included Graph Paper program and test tones, you can easily
plot your in-room Frequency Response quickly. Graph Paper will even compensate for
the C-weighting of the Radio Shack SPL meter so you don't need to go out and buy
an expensive measuring device. Once you have your in-room response graphed out,
you can make corrections in R-DES and upload them in real time! This means you can
hear the changes you are making as you go.
R-DES also allows you to store multiple curves in the hardware. This means you
can build a Frequency Response curve for general movies, action movies, music or
whatever. If you want to crank up the bass a little for a certain kind of film or
album, it's easy with R-DES. When you want to switch curves, just touch a button
on the front panel of the R-DES hardware and it's done.
R-DES represents a huge shift towards high quality, accurate bass in the home.
With our 30-day in-home trial period, you simply must try out R-DES for yourself
and hear what it can do for your system.
Supported OSes: Windows XP (all variants). Tested with Windows 98se; not supported
but should work fine.
Mac and Linux not currently available. If you want to see these OSes supported,
tell us!
Can store up to five seperate curves and can be recalled instantly with the touch
of a button
Five bands of parametric equilization per curve with low pass crossover adjustment
(frequency and slope)
Two line-level (RCA) inputs and outputs
USB Input
Input impedance: 100K ohms
5 1/8" D x 4 1/4" W x 2 3/16" H
3 Year Warranty!
