Emu XL-7 & MP-7 User's Group

--- David <spec@...> wrote:
> definatly needed some eq as it was mixed on headphones...
> hehe - sorry about breaking your expensive champaign glasses ...

Yeah, holy shit!  About a year and a half ago I built a very large
subwoofer for my home stereo.  I had two clear (!) AR 12" drivers that
I had left over from a friend's pair of speakers.  I went through the
*very* long process of deducing all of the Thiele-Small parameters
(this took a very long time with two meters, a high-power resistor, an
amp, a temporary box, variable frequency generator...).

Then I built this huge box (about 3.5'x2.2'x1.3') with two 2" ports
tuned to 18 (yes 18!) hertz.  I wanted to push as much of the group
delay and phase anomalies out of the audible band, while retaining an
almost flat response down to about 15Hz.  I also put a blue 60w light
bulb inside so it lights the drivers from the back.

In any case, very few things actually cause the air in the tubes to be
noticeable, as things resonating at 18Hz is usually uncommon.  Your
song however, had enough low frequency energy to almost knock the
liquor bottles off the shelf above!  Good to know that the sub works!

Cool song...
  -Aaron

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