Embedded Files
Manufacturers Info
Brand: SB Audience
Model: H280
Style: Constant directivity
Coverage (H x V): 60 x 40
Minimum Frequency: 700 Hz
Throat: 1.4"
Mounting Type: 4-bolt
Dimensions (W x H x D): 279mm x 279mm x 230mm
Additional Notes:
Funds for this horn kindly provided by MDuyck1292
Measurements:
Measurements:
Test Notes: Off axis and polars measured using a Faital Pro HF146R
Mic distance 1m, measurements gated at 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:
I guess this qualifies as constant directivity if you really squint or apply a lot of smoothing but overall a pretty rough response from this horn both on and off axis. Sharp transitions between straight walled sections on the horn allow for a lot of diffraction to occur in the horn path.
Horizontal coverage looks just wider then the rated 60 degrees, while the vertical coverage appears to be just under 60 degrees rather then the rated 40.
Top octave dispersion on these 1.4" horns is determined largely by driver design and throat match-up rather then the horn itself. As such it will vary depending on the model of compression driver used.
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