RM 120 L0021-04S

High End automotive midrange

The manually coated paper cone and the mechanically matching natural rubber surround
result in an unusually smooth midrange response.

Heavy copper rings mounted above and below the T-shaped pole piece reduce non linear
and modulation distortion and increase overload margin.

The large magnet system provides good sensitivity and transient response.
The chrome plated brass phase plug reduces compression due to temperature variations
in the voice coil, increases long term power handling capacity and eliminates resonances
in the cavity inside the voice coil former.

The extremely stiff and stable injection moulded zinc basket keeps the critical
components in perfect alignment. Large windows in the basket both above and below the
spider reduce sound refl exion, air fl ow noise and cavity resonance to a minimum.
Gold plated terminals mounted on a glass fi bre reinforced plate reduce contact resistance
and improve reliability.

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seas_lotus_rm_120_l0021-04s.jpg
pdf Download Datasheet RM 120
 
Frequency response
 
Dimensions
RM 120 L0021-04S frequency respons field sound pressure in 0, 30, and 60 degrees angle using a 2.5l closed box. Input 2.83 VRMS, microphone distance 0.5m, normalized to SPL 1m.The dotted line is a calculated response in infi nite baffle based on the parameters given for this specific driver. The impedance is measured in free air without baffl e using a 2V sine signal.   d_seas_lotus_loudspeaker_performance_rm_120_l00210_l4s.jpg
Specifications

The frequency responses above show measured free field sound pressure in 0, 30, and 60 degrees angle using a 2.5l closed box. Input 2.83 VRMS, microphone distance 0.5m, normalized to SPL 1m.The dotted line is a calculated response in infi nite baffle based on the parameters given for this specific driver. The impedance is measured in free air without baffle using a 2V sine signal.

 *IEC 268-5, via high pass butterworth filter 800Hz 6db/oct.
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