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Manufacturers Info
Brand: B-52
Model: PHRN-15
Style: ----
Coverage (H x V): 90 x 40
Minimum Frequency: 900 Hz
Throat: 1"
Mounting Type: 1-3/8"-18 TPI
Dimensions: 12.5" W x 6" H x 4.25" D
Additional Notes:
Thanks to jvphotog for sending me this horn to test.
B-52 buyout From Parts Express
Measurements:
Measurements:
Test Notes: Off axis and polars measured using a Celestion CDX1-1731
Mic distance 1m, measurements gated at 4.5ms and are smoothed at 1/48 Octave.
Horizontal:
Vertical:
Raw Horizontal Off Axis Response
Raw Vertical Off Axis Response
Horizontal Off Axis Response - Normalized to On Axis
Vertical Off Axis Response - Normalized to On Axis
Horizontal Polar Response - Normalized to On Axis
-6dB Coverage Angle Highlighted
Vertical Polar Response - Normalized to On Axis
-6dB Coverage Angle Highlighted
Final Notes:
This horn design appears to be constant directivity and I'd put the measured coverage angle at roughly 100 x 70 degrees which is a fair bit wider then the rated 90 x 40.
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