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Manufacturers Info
Brand: Dayton Audio
Model: H6512
Style: Consistent Coverage
Coverage (H x V): 90 x 50
Minimum Frequency: 1000 Hz
Throat: 1"
Mounting Type: 1-3/8"-18 TPI
Dimensions: 12" W x 6.5" H x 4.25" D
Additional Notes:
Horn throat is slightly too large leading to a driver exit to throat mismatch which I have noticed on most of the Dayton Audio Horns and Waveguides.
This waveguide is a clone of the JBL 338800-001 progressive transition waveguide though the horn profile does not appear to be an exact copy of the JBL.
Measurements:
Measurements:
Test Notes: Off axis and polars measured using a Celestion CDX1-1731
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:
Both horizontal and vertical dispersion appear to be slightly wider then rated I'd put it roughly 100 x 60 degrees. Horizontal coverage is constant over most of the range but there is some waist-banding just below 2k and the the throat diameter mismatch adds a kink in the top octave. The unbranded clone has a better throat size you can see the improvement is makes here.
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