Test Monacor DT-99

Test Monacor DT-99 One of the cheapest tweeters in the Monacor range

Datasheet © www.heissmann-acoustics.de
Measurements in DIN baffle in 70cm distance at 2,83V. Level scaled to 1m
Test Monacor DT-99

Monacor DT-99 Sound Pressure & Impedance (Scattering)

Monacor DT-99 frequency response

Good linearity with full level from 2000Hz. The efficiency is on average at 90dB / 2,83V. In view of the fact that it is a 8Ohm driver is a good value (Compared to 4Ohm tweeters would have to add the DT-99 3dB). Unfortunately, the amplitude responses of the two measured drivers vary considerably below 5kHz. This can also be seen on the impedance gears. Cause is probably a lack of centering of the vibrating unit.

Also different Ferrofluidgaben can be a cause. The up-shifted and flattened impedance curve (black) may also indicate a "sticky" voice coil. So it could be that I got a broken copy.

Monacor DT-99 sound pressure at angles (15 °, 30 °, 45 °, 60 °)

Monacor DT-99 angle
Uniform and for a 25mm dome typical omnidirectional behavior.

Monacor DT-99 decay behavior

Monacor DT-99 decay behavior

Even and fast decay over all frequencies.

Monacor DT-99 harmonic distortion

Monacor DT-99 distortion

Monacor DT-99 has low harmonic distortion as of 2kHz. Recommended separation:> = 2kHz with at least 12dB / octave.


Frequency response / directional behavior:4 5 out of stars
Range:4 5 out of stars
Power handling:4 5 out of stars
Constance / without rating /:0 5 out of stars
Haptics:3.3 5 out of stars
Price-performance:4 5 out of stars


A very cheap tweeter with decent readings. Unfortunately, the two presumptuous specimens scatter more than hoped. The inner structure (in particular the centering of the oscillating unit) is designed somewhat "windy". Otherwise, the measurement results by the bank are impeccable. Can be used from 2-2,5kHz.

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