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two π tower speaker performance data

two Pi tower speaker
The two "π" tower speaker uses the same components as the bookshelf model, but its larger size affords it much greater bass extension. It provides high-efficiency and deep, full bass response.

It satisfies four basic requirements: The first requirement is that it must sound great. The second is that it sound great with little input power. The third requirement is that it provide deep bass extension. And the fourth requirement is that it be relatively inexpensive. To reach these goals, we've used only the most efficient components. It has a larger cabinet, in order that it be able to hit the low notes. But being a tower, it doesn't take up much space in the room.

The two "π" tower is efficient enough to work well with low-power amplifiers yet durable enough to handle high power, delivering high sound pressure levels. It works very well as a stereo main speaker with enough deep bass response to make subwoofers unnecessary. It is perfect for use as a main speaker in high-fidelity stereo systems and home theater. It's deep bass response makes it attractive for setups where subwoofers can't be used or aren't desired.

Frequency Response

Impedance

Notes:

  • All measurements were done halfspace, with the speaker resting in a cradle and the microphone suspended above it on a boom.
  • No post-processing or smoothing was applied.
  • Measurements were taken at a distance of 10 feet from the baffle and drive voltage was 8.62vrms. This is equivalent to 2.83v/M and 1W/1M values since average impedance is 8Ω.
  • The loudspeaker was driven with a 60Hz sine at 20vrms to pre-heat for 15 minutes immediately before measurement. This was done to bring it to a realistic operating temperature.

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