LFE-4 Front Panel | MK Sound instruction

Bass Management Controller

The LFE-4 consists of a series of five high-pass filters (one each for the L, C, R, LS, LR channels) that route high frequency information (above 80Hz) to their appropriate channel’s amplifier and speaker monitor. Each channel is also routed through a matching 80Hz low-pass filter. This low frequency information is then routed to a summing amplifier, which in turn sends this low frequency information, along with the LFE channel, to two dual subwoofer outputs.

This is done for two reasons. First, small loudspeakers cannot reproduce information below 80Hz. At least, not with any authority. This information is therefore summed together and redirected from the individual channels to a loudspeaker that can reproduce this low frequency information with clarity and power – a subwoofer. With the introduction of digital audio, it has become necessary for loudspeaker systems to be able to accurately reproduce audio that has a bandwidth of 20Hz to 20kHz with wide dynamics. A satellite/subwoofer system is the best way to accomplish this.

Secondly, most home theater receivers have some form of bass management in their processors. In order for work done in the studio to translate properly, the mixer must hear his mix exactly the way it will ultimately be played back. The LFE-4 together with a properly set-up and calibrated M&K monitor system allows the mixer to hear his work with more accuracy than might otherwise be possible.

The LFE channel is a discrete channel created by the mixer to supplement the low frequency content of the mix.

The subwoofer channel is the summed low frequency content from the five main channels plus the LFE channel. It is created by the processor in the encoder/decoder of your chosen format, or in this case, the LFE-4.

The LFE-4 correctly balances these channels so the mixer can accurately hear how the format processor will affect his mix.

The goal is to be able to accurately monitor multi-channel audio with a bandwidth of 20Hz to 20kHz containing extreme dynamics and have that audio translate accurately when played back on other systems.

Aproperly set-up and calibrated M&K monitoring system with an LFE-4 will allow the mixer to make quick and accurate decisions in a listening environment that he will find satisfying and enjoyable.

FIGURE 1: LFE-4 FRONT PANEL

LFE-4

Studio Bass Management Controller

Subwoofer

Left

Center

Right

Left Surround

Right Surround

FIGURE 2: LFE-4 REAR PANEL

SIGNAL

CHASSIS

GND

24 VAC

RIGHT SUR

LEFT SUR

RIGHT

CENTER

LEFT

LFE IN

SUB OUT

OUT

+0 dB

+10 dB

LFE-4 specifications

The MK Sound LFE-4 is a highly regarded low-frequency effects (LFE) speaker, designed to deliver exceptional bass response in home theater and professional audio environments. Renowned for its compact design and powerful performance, the LFE-4 is perfect for audiophiles and filmmakers looking for depth and clarity in the sound experience.

One of the standout features of the LFE-4 is its advanced driver technology. The subwoofer is equipped with a high-excursion 10-inch driver that ensures a robust low-end performance, capable of reproducing deep bass frequencies with precision and impact. This driver is housed in a sturdy cabinet that is engineered to minimize distortion and resonance, thus providing cleaner sound reproduction.

The LFE-4 also incorporates an efficient built-in amplifier, delivering ample power for both dynamic peaks and sustained low-frequency notes. With an output power of up to 300 watts RMS, the LFE-4 can handle even the most demanding cinematic soundtracks, ensuring that every explosion, rumble, and musical note is felt as much as it is heard. This makes it an ideal choice for home theater setups or studio environments where impactful sound is a priority.

In terms of connectivity, the MK Sound LFE-4 offers various options to accommodate different setups. It features both balanced XLR and unbalanced RCA inputs, allowing easy integration with various AV receivers, processors, and professional sound systems. This versatility in connectivity options makes it adaptable for different environments, whether it’s a home theater or a commercial installation.

Additionally, the LFE-4 is equipped with adjustable crossover settings, enabling users to fine-tune the subwoofer's performance to match their specific speaker configuration. This ensures seamless integration with other speakers in the system, creating a cohesive audio experience that enhances the overall soundstage.

The MK Sound LFE-4 is also designed with aesthetics in mind. Its sleek, understated appearance allows it to blend seamlessly into any decor while maintaining a professional look that signifies quality.

Overall, the MK Sound LFE-4 stands out in the market for its solid performance, versatile features, and commitment to delivering an immersive audio experience. Whether it's for music, movies, or gaming, the LFE-4 ensures that bass is not just heard but truly experienced.

MK Sound operation manual LFE-4 Front Panel

Models: LFE-4