Scan-Speak D2604 / 830000 WG

Test Scan-Speak Discovery D2604 / 830000 with WG PCT-300 / WG-300 26mm dome tweeter 4 Ω with waveguide

Datasheet © www.heissmann-acoustics.de
Measurements in 20x40cm baffle, 10mm rounded, in 70cm distance at 2,83V. Level scaled to 1m.

The Waveguide was milled with a CNC adapter platemounted on the tweeter.

Scan-Speak D2604 / 830000 WG

Directivity horizontal (0 °, 15 °, 30 °, 45 °, 60 ° & 90 °) & Impedance

 Scan_830000_winkel_hor

... normalized to 0 ° (sonogram)

Scan_830000_directivity_hor

Due to the waveguide system-related symmetrical peak from 1-10kHz.
Extremely uniform directivity without significant disturbances. In the main very close to "Constant Directivity". The slight widening around 2,5kHz can be equalized by skillful choice of the midrange and its filtering.

Burst decay

Scan_830000_bd

Overall, very smooth and rapid decaying over all frequencies.

Minimal delayed in the super high tones.

harmonic distortions (90-105dB / m)

Scan_830000_distortions

K3 remains, even at 105dB / m> 1kHz in the range <0,9% at all measured levels.

K2 increases evenly with increasing level and exceeds> 1kHz the 1% mark only at levels> 100dB.

Outstanding!

Rating

Frequency response / directional behavior:
Range:
Power handling:
consisty / without rating:
Haptics:
Price-performance:

Summary

The Scan-Speak D2604 / 830000 measures itself at the Waveguide, apart from the ~ 1dB lower efficiency practically identical to the D2604 / 833000, Therefore, the same conclusion:

In terms of "dome tweeter with waveguide" remain, realistically, nothing to be desired. Very broadband usable, extremely low-level distortions and in terms of directivity close to the ideal ...

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