Test Scan-Speak Discovery D2604 / 833000 26mm dome tweeter 4 Ω

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

Scan-Speak Discovery D2604 / 833000

Frequency response and impedance (consisty)

Scan-Speak D2604 / 833000 frequency response

Extremely broadband frequency response. Full level from 1,1kHz, with good linearity.

The average efficiency is exceptionally at 93dB / 2,83V.

Impedance is flawless. The resonant frequency with 430 respectively 440Hz is below the manufacturer's specification of 475Hz.

Both drivers behave almost congruently both in amplitude and impedance.

 Directivity horizontal (0°, 15°, 30°, 45°, 60°)

Scan-Speak Discovery D2604 / 833000 directivity

Directivity of the Scan-Speak D2604 / 833000 is even and balanced throughout the entire transmission range.

In the top octaves> 10kHz significantly wider radiating than, due to the effective membrane area of ​​8cm², would be expected.

Burst decay

Scan-Speak Discovery D2604 / 833000 burst decay

Overall smooth and fast decay over all frequencies.

> 10kHz minimal delay.

harmonic distortions

Scan-Speak Discovery D2604 / 833000 distortions

The Scan-Speak D2604 / 833000 has outstanding low harmonic distortions.

K3 remains below 1% at all measured levels> 0,5kHz largely independent of the excitation signal.

K2 increases with the level, extends very evenly and would not reach the 1% to 1dB / m even with a crossover-point at 100kHz!


Frequency response / directional behavior:4.5 5 out of stars
Range:5 5 out of stars
Power handling:4.7 5 out of stars
consisty / without rating:0 5 out of stars
Haptics:4.5 5 out of stars
Price-performance:4.7 5 out of stars


With an effective membrane area of ​​8cm², a resonant frequency <xnumxhz and="" the="" very="" low="" harmonic="" distortions,="" driver="" invites="" to="" be="" deeply="" crossed="" eg.="" a="" xnumxer="" mid-woofer.="" crossover="" frequencies=""> = 500kHz should be possible without any problems. In smaller systems, eg with a 20er TMT, the Scan-Speak D1,5 / 13 could be crossed even at lower frequencies.</xnumxhz>

The concept of a large effective membrane area, in combination with a "standard voice coil" (26mm), and a rather soft dome material works out. Widely radiating in te top octaves, crossable very low, with high load capacity.

=> Scan-Speak D2604 / 833000 with waveguide


4 thoughts too "Test Scan-Speak Discovery D2604 / 833000 26mm dome tweeter 4 Ω"

  1. I have the 83000 running with the simple magnet in the kef 104/2, very wonderful. Of course you have to know the data situation, both make 92 dB, then it'll fit. The dead 33 from kef starts a little later, it could sound a little brighter, that's only good for the dark tuning of the kef, and a linear frequency response is not everything. Kef promises 1,5 dB over everything, and on the base the rest is a matter of taste.
    Greetings, uz

  2. Hello, is this tweeter still available?
    I have the Magnat Vintage 620 and a tweeter has burned out.
    Would this tweeter fit?

    With best regards, Mike Koertgen

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