|The Pyle PH565 horn measures 7-5/8″W x 6-1/8″H, making it an ideal candidate for 8″ woofer. It has a coverage of 90°H x 40°V, a cut-off frequency of 1kHz, 1-3/8″-18 screw mount and made of ABS resin.
I’m not sure whether Pyle discontinued this horn but there’s one made by Goldwood, model GT-300PB. I believe they are exactly the same.
|Selenium D220Ti with Pyle PH565
Fig 1 shows the response of the Selenium D220Ti with the Pyle PH565 horn.
BLACK trace = RAW (no crossover)
No CDEQ activated. Microphone at 1 meter, tweeter axis. Gating at 5 msec. No smoothing applied.
From the plots, we can see some jagged response from 4kHz to 7Khz. Fortunately, these frequencies are not too critical as they are out of the vocal range.
The Red trace in Fig 2 is the summed response of a Dayton RS180S with the Selenium D220Ti/PH565.
Some cancellation is observed on the right of the crossover frequency.
|D220Ti in Reverse Phase
In Fig 3, the Selenium D220Ti is wired in reverse phase.
The summed response shows quite a displacement between the acoustic centers of the D220Ti and the RS180S.
In Fig 4, delay is applied to the RS180S. With the right amount, a deep notch is observed, which will be centered at the crossover frequency.
|Time Aligned RS180S and D220Ti/PH565
Fig 5 is the time aligned summed response when the D220Ti is wired back to normal phase.
Note the cancellation in Fig 2 has completely disappeared.
November 30, 2016PRO DRIVERS