9 is the in-room Frequency Response of the Dayton RS180s
measured with Dayton's OmniMic v2.
Black Trace is the Raw Response of the RS180s. Note the
rising response from 500Hz to 1,500Hz (+3dB). This is due
to the narrow front baffle of my box. If left uncorrected,
the mids will be too bright, resulting in "listening
Blue Plot is the Baffle Step Compensation (1.5mH//4 ohms)
with a Zobel (10uF+10 ohms). This network completely eliminates
the rising reponse. It is now virtually flat from 500Hz
The final step is the crossover. The Red Plot is with a
2nd order Network (0.95mH with 8uF). The cone breakup (at
9kHz) of the RS180s is attenuated -33dB. Reference to 82dB,
the attenuation is -20dB.
interesting outcome is eventhough the electrical crossover
is 12dB/oct, the resulting acoustic slope is actually at
18dB. That's a bonus.
Fig 10, the Blue Trace is the Raw response of the Pyle PDS382
coupled to a Dayton HE07E Elliptical Horn.
the response is very smooth to 10kHz. As the frequency increases,
there is some attenuation but fortunately, it's not too
Red Trace is with an 18dB/oct crossover. No other network
is required as the crossover is ajusted for flat response.
> Summed Response