Denovo DW-654S

Manufacturers Info

Brand: Denovo

Model: DW-654S

Style: Elliptical

Coverage (H x V): -----

Minimum Frequency: 2500 Hz

Throat: 1"

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

Dimensions: 6" W x 4.5" H x 3.75" D

Additional Notes:

This waveguide was sold on DIYSG several years back.

Required a 3mm spacer with the Celestion CDX1-1731 so the exit of the compression driver fit tight against the horn throat. The CDX1-1731 has shorter threads then many common screw on drivers.

Measurements:

Test Notes: Off axis and polars measured using a Celestion CDX1-1731 compression driver.

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:

Dispersion pattern of this waveguide appears to be roughly 80 H x 60 V. I would say the loss of pattern control starts around 3000hz horizontally and 4000hz vertically.