Overview:
I set out to create critical listening speakers that will be enjoyable in any room you put them in. This was accomplished by creating a floor standing pair of speakers with great off axis response to make the largest “sweet spot” to fully enjoy your music. I believe speakers should be flexible enough to be an afterthought when you are relaxing to your favorite music.
Epimetheus utilizes a passive 2.5-way crossover design which means, compared to a 2-way crossover, there is an additional woofer that handles only the bass frequency.
Features:
+/- 2 dB from 70 to 17k Hz
Great Off Axis Response
Under $800
Floor standing
F3: 60 Hz
Drivers:
Tweeter: The Morel MDT29 was selected for it’s good off axis performance, and low frequency extension that allows it to be crossed over around 1800 Hz
Woofer: The Seas L16RN-SL was selected because its Q(tc) indicated it was suited for a sealed box, plus it has good low frequency extension for its size.
Documentation:
Testing Report
Crossover Schematic
Drafting
Testing Results:
Full Range
 |
Purple: Full Range, Red: Tweeter, Blue: Mid-Woofer, Green: .5 Woofer
|
Full Range, Mid Woofer Inverted
Horizontal Off Axis Response
 |
| Purple: 0º, Red: 15º, Green: 30º Blue: 45º, Orange: 60º |
Vertical Off Axis Response
 |
| Purple: 0º, Red: 15º, Green: 30º, Blue: 45º, Orange: 60º |
Harmonic Distortion:
Step Response:
Impulse Response:
Minimum Phase Response:
Waterfall:
Tweeter Response:
Woofer Response:
Epimetheus by
Russell Goddard is licensed under a
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
