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Comparison Alphard Magnum M15D4 vs Alphard Hannibal SD152

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Alphard Magnum M15D4
Alphard Hannibal SD152
Alphard Magnum M15D4Alphard Hannibal SD152
from $103.22 up to $111.48
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Application areacarcar
Designwithout bodywithout body
Typepassivepassive
Size15" (38 cm)15" (38 cm)
Tech specs
Rated power350 W350 W
Max. power
1000 W /Peak/
1000 W /Peak/
Sensitivity88 dB87 dB
Dual voice coil
Impedance
4 ohm /single coil/
2 ohm /single coil/
Resonant frequency33,4 Hz28,05 Hz
General
Diffuser materialpulp / paperpulp / paper
Woofer Diameter380 mm380 mm
Added to E-Catalogmarch 2016march 2016

Sensitivity

Sensitivity determines the loudness of the subwoofer when a signal of a certain power is connected to it: with equal signal power and impedance (see below), the subwoofer with the higher sensitivity will sound louder.

Impedance

The electrical resistance of a subwoofer when a signal is applied to it. This parameter is important primarily for selecting a subwoofer-amplifier pair: at a lower impedance than that of the amplifier, the subwoofer will distort the sound, at a higher impedance the sound will be too quiet.

For dual voice coil models (see above), the impedance is specified for one of the voice coils.

Resonant frequency

The natural frequency of the cone in the subwoofer speaker, namely the frequency with which the cone will oscillate if the speaker is suspended freely in the air and a single impulse is transmitted to the cone (for example, by clicking on it with your finger). In subwoofers, this parameter determines, in particular, the lower limit of the frequency range (see above): at frequencies below the resonant sound power drops sharply. Accordingly, for deep rich bass, the resonant frequency should be as low as possible. This parameter is also used to calculate the size of the enclosure for the subwoofer.
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