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Comparison Mystery MBB-314A vs Mystery MBB-655A

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Mystery MBB-314A
Mystery MBB-655A
Mystery MBB-314AMystery MBB-655A
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Application areacarcar
Designenclosedenclosed
Enclosure typesealed boxsealed box
Body shapeBoxBox
Typeactiveactive
Size12" (30 cm)6.5" (16.5 cm)
Number of woofers3
Tech specs
Rated power250 W60 W
Max. power550 W120 W
Frequency range20 – 200 Hz50 – 1000 Hz
Sensitivity87 dB91 dB
Impedance4 ohm4 ohm
Bass level control
High voltage input
Gold plated contacts
General
Remote control
Protective grille
 /chrome plated/
Diffuser materialpulp / paperpolypropylene
MaterialMDFMDF
Woofer Diameter300 mm165 mm
Enclosures dimensions520х370х350 mm
Added to E-Catalognovember 2019february 2014

Size

The size (diameter) of the main subwoofer speaker. In all types of subwoofers, this parameter primarily affects the power and depth of sound: the larger the speaker, the louder it is and the deeper the bass it can provide (ceteris paribus). However with an increase in the size and dimensions, they increase accordingly, which determines the installation possibilities. The latter is especially true in Free Air subwoofers (see "Execution"): some cars are initially equipped with "seats" for a certain size, and it is difficult to install models with other dimensions there.

Now on the market there are subwoofers with such popular sizes: 5" (13 cm), 6" (15.25 cm), 6.3" (16 cm), 6.5" (16.5 cm), 6.75" (17 cm), 8" (20 cm ), 8.25"(21cm) , 9" (23cm ), 10" (25cm ), 11" (27cm), 12"(30cm) , 13" (33cm), 15"(38cm) , 16 " (40 cm), 18" (46 cm).

Number of woofers

The number of main speakers installed in the subwoofer. Most models are equipped with a single speaker, which is considered sufficient for quite decent bass reproduction. Models with two speakers sound louder and have better sensitivity, but are complex in design (as a result, more expensive) and more difficult to install, and therefore are relatively rare.

Rated power

The average (root mean square — RMS) power of the input signal, at which the subwoofer is able to work continuously without negative consequences (damage, failure) for at least an hour. The rated power of the subwoofer must be greater than the power of the amplifier connected to it — in order to avoid overloads.

Max. power

The maximum signal power that the subwoofer is able to withstand for a short time (up to several seconds) without any negative consequences. When selecting an amplifier-subwoofer pair, it is recommended to take a subwoofer with a maximum power of at least twice the maximum power of the amplifier. In general, the higher the maximum power, the more resistant the subwoofer is to overloads.

Frequency range

The range of audio frequencies reproduced by the subwoofer. It is believed that the human ear is capable of perceiving a frequency range of the order of 16 – 20,000 Hz, but in this case note that the subwoofer is designed to reproduce the lower frequency band (up to 200 Hz). Accordingly, in the case of the lower limit of the range, everything is simple: “the lower, the better”; the upper one should not be lower than the lower limit of the main car audio — otherwise there will be "gaps" in the frequencies, which will affect the sound quality.

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.

Bass level control

Since the subwoofer was originally designed to reproduce bass, in fact, in this case, it implies the presence of its own volume control, which allows you to change it without affecting the signal source. This allows you to easily set the desired bass level relative to the rest of the sound of the audio system (for different cases, this ratio may be different).

Gold plated contacts

The presence of gold plating on the subwoofer connectors. Such a coating is not only aesthetically pleasing, but above all it is resistant to oxidation, has low electrical resistance and ensures reliable contact, thus minimizing interference from the connection point.

Remote control

The remote control allows you to control the functions of the subwoofer from a distance. This is especially useful if the device is installed in the boot or otherwise difficult to access — you can easily change settings without access to the subwoofer itself, including while the car is moving.
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