michael chuaApril 5, 2018PRO DRIVERSD250P, Dayton, Exponential, HC23-25, Horn, Selenium
Selenium HC23-25 Specifications: • Horn type: Exponential • Minimum frequency: 600 Hz • Nominal dispersion: 100° H x 40° V • Throat diameter: 1.0″ • Mounting type: 1-3/8″-18 TPI • Dimensions: 10.0″ W x 5.0″ H x 5.7″ D • Cabinet cutout: 3-1/4″ H x 8-1/2″ W
Evaluation Setup: A 24dB/oct (Linkwitz Riley) electronic crossover is used for all measurements. |
Frequency Response of Selenium HC23-25 with Dayton D250P
 Fig 1 – Mic at 1 meter, tweeter axis. Impulse Window = 5ms. No Smoothing.
Summed Response of Dayton RS180s with Selenium HC23-25/D250P
Fig 2 – 24dB/oct L/R Electronic Crossover set at 2kHz. Disregard measurements below 500Hz.
Correct Summing with D250P wired in Reversed Phase
Fig 3 – Dayton D250P wired in reversed phase. Disregard measurements below 500Hz.
Delay Added to Dayton RS180s with D250P wired in Reversed Phase
Fig 4 – Delay Added to Dayton RS180s with D250P wired in reversed phase. Disregard measurements below 500Hz.
Time Aligned Dayton RS180s with D250P wired in Normal Phase
Fig 5 – Time Aligned RS180s with HC23-25/D250P. Disregard measurements below 500Hz.
Time Aligned Frequency Response of Dayton RS180s with Selenium HC23-25/D250P
Fig 6 – Time Aligned RS180s with HC23-25/D250P. Measurements below 500Hz are in Nearfield.
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Fig 1 – Mic at 1 meter, tweeter axis. Impulse Window = 5ms. No Smoothing.
