Posted by Wayne Parham on January 12, 2003 at 13:52:21

In Reply to: Woofer-tweeter posted by Mike C on January 12, 2003 at 13:08:50:

To attenuate a piezoelectric tweeter, use a capacitor in series. Since the tweeter is primarily capacitive, a series capacitor forms a voltage divider rather than a frequency splitter. There is no filter function when components having the same reactive properties are connected together. So a capacitor/capacitor network forms a simple voltage divider, much like a resistor/resistor network does.

For a KSN-1038, you can expect attenuation in the following amounts:

1.0uF 1dB
0.5uF 2dB
0.33uF 3dB
0.22uF 4dB
0.1uF 7dB

These values are what you'll get if you connect a capacitor in series with the tweeter, and do not use any other components. That gives broad-band attenuation only, and does not act as a crossover.

See the post called "Pi implementations of quartz piezoelectric tweeters" for more information about this subject.

• But Mike says the tweeter is the less efficient driver (nt) - Patrick Kopson 06:17:41 01/13/03 (3)
  • To attenuate the woofer, just use a resistor or L-Pad - Wayne Parham 14:18:38 01/13/03 (2)
    • Re: To attenuate the woofer, just use a resistor or L-Pad - Mike C 15:27:39 01/13/03 (1)
      • Electrical filters - Wayne Parham 15:57:27 01/13/03 (0)