Glossary of Terms

Q

The energy losses of relative damping (ratio of stored to dissipated

 

energy or ratio of reactive to resistive energy).

Fs

Free air resonance of driver in Hz.

Qms Mechanical Q.

Vas

Volume of air equivalent to driver from the rest position.

Cms

Mechanical compliance of a loud speaker piston.

Mms

Moving mass of total loud speaker piston assembly.

Xmax The maximum linear excursion of a loud speaker.

Sd

Surface area of the cone.

Dia

The piston diameter of a loud speaker.

Qes

Electrical Q of a system.

Re

DC resistance.

Le

VC inductance.

Pe

Maximum input power.

Qts

Total Q of the system.

Sens Sensitivity. An efficiency measurement in dB’s.

Vc

Volume of a closed or sealed enclosure

Vb

Volume of a vented enclosure.

Fc

The resonant frequency of a closed or sealed system

Fb

The resonant frequency of a vented system

F3 The half-power (-3dB) frequency of a loud speaker enclosure

Qtc

The Q of a loud speaker at Fc in a closed box, considering both

 

it’s electrical and mechanical resistance.

QL

The Q of a vented box, resulting from all box losses.

DV

Diameter of vent.

LV

Length of vent.

H

Height.

W

Width.

D

Depth

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Hifionics HFX12D4 manual Glossary of Terms

HFX12D4 specifications

The Hifonics HFX12D4 is a powerful subwoofer designed for audiophiles seeking extraordinary sound performance without compromise. As part of Hifonics' esteemed line of audio equipment, this model boasts advanced technologies and construction features that set it apart from competitors in the market.

At the heart of the HFX12D4 is its 12-inch dual 4-ohm voice coil configuration. This design enables greater flexibility when it comes to wiring options, allowing users to choose between various impedance setups for optimal performance with their amplifiers. The dual voice coils provide increased heat dissipation, further enhancing the subwoofer's durability during extended use at high volumes.

One of the standout features of the HFX12D4 is its robust construction. The subwoofer is equipped with an ultra-stiff polypropylene cone that ensures minimal distortion while producing deep, rich bass. Its high-excursion design allows for maximum movement, enabling it to handle more power without sacrificing sound quality. The cone is further reinforced by a durable rubber surround, which contributes to overall longevity while maintaining a consistent bass response.

Hifonics has also integrated advanced technology into the HFX12D4, including a double-stacked magnet structure that provides a strong magnetic field for more efficient sound production. This powerful magnet allows the subwoofer to generate impressive low frequencies, delivering deep bass that resonates throughout any listening environment. Additionally, the HFX12D4 features a specially designed vented pole piece that aids in cooling, preventing thermal buildup during intense playback sessions.

In terms of power handling, the HFX12D4 is no slouch. With a peak power rating of 1200 watts and an RMS power handling capability of 600 watts, this subwoofer is well-suited for both everyday listening and high-output bass applications. This impressive power handling ensures that users can push the subwoofer to its limits while maintaining clarity and precision in their sound.

Installation has also been made simpler with the HFX12D4. The subwoofer comes with a standard size that fits most enclosures, which allows for easy integration into existing sound systems. Its versatility makes it an ideal choice for various applications, whether in a home theater setup or a customized car audio system.

In summary, the Hifonics HFX12D4 stands out as a remarkable subwoofer, offering a blend of robust construction, advanced technology, and powerful performance. Its ability to produce deep, resonant bass, while maintaining clarity under high-power conditions, makes it a top choice for enthusiasts who desire an exceptional audio experience.