B-52 PHRN-15

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:

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.