Goldwood GT-400PB

Manufacturers Info

Brand: Goldwood

Model: GT-400PB

Style: ----

Coverage (H x V): ----

Minimum Frequency: ----

Throat: 1"

Mounting Type: 1-3/8"-18 TPI

Dimensions: 10-7/16" W x 4-3/8" H

Additional Notes:

Thanks to jvphotog for sending me this horn to test.

Horn mold must have had poor cleanup and left excess plastic in the throat. The entrance is also nearly square instead of round.

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:

Horizontal coverage is very uneven and I don't even know what I would rate it as 90 degrees? Vertical shows exponential style pattern and narrows to roughly 30 degrees.