THX subwoofers

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and it gives you maximum output level, dynamic range, and headroom. In your listening room, the "ANECHOIC" position will actually produce a rising output below about 30 Hz. Its response is not as flat (accurate) as the "THX" position and it limits the subwoofer's maximum output and dynamic range. For performance to THX specifications, this switch must be set to the "THX" position.

SETTING SUBWOOFER LEVEL (THX)

The proper method of setting the level of the subwoofer in THX mode is to use the low frequency pink noise test signal generator built into the THX controller and a sound level meter (available from Radio Shack). First set the master volume of the THX controller to the "0" or "REF" position. Then set the Subwoofer Output control on the THX controller so that the output of the subwoofer causes the sound level meter to read 75 dB (C scale, slow mode) when that test signal is playing. All channels of the THX system should be calibrated to this 75 dB level when using the unit's internal test signal.

Special Note: When calibrating the subwoofer level (and only the subwoofer level), you will find that the needle on your sound level meter will bounce plus or minus a couple of decibels when measuring the test signal. To set subwoofer level, read the AVERAGE meter level, not the peak level. Move around the room as you measure levels, so that your measurements account for the room reinforcements and cancellations found at various room locations.

For details on setting levels with your THX controller, see the instructions provided with that unit.

USING TWO SUBWOOFERS (THX)

Using two subwoofers in your THX system will give you the ultimate in bass performance. It will give you improved bass impact and definition, as well as greater output and dynamic range. If you locate the subwoofers in different parts of the room, you will get a better overall frequency response, because the room modes excited by one woofer are complemented by the presence of the other subwoofer. Alternately, if you stack two subwoofers, one on top of the other, their outputs will couple and give you an additional total of up to 6 dB of output.

Wiring with two subwoofers is simple. Instead of running two interconnect cables to one subwoofer, run one interconnect to each subwoofer, using each LEFT/MONO input jack. See Figure 2 (page 5).

Please note that when you are using two subwoofers in your system, you will have to adjust the controller's subwoofer output levels lower than when using one subwoofer.

6. OPERATION WITH A NON-THX PROCESSOR

OPERATION OF THE "LOW PASS FILTER" SWITCH

With a non-THX controller, preamp, etc., this switch should be set either to the "80 Hz 24 dB/ OCTAVE" position or the "VARIABLE" (center) switch position.

80 Hz 24 dB/OCTAVE

When the toggle switch is set to the "80 Hz 24 dB/OCTAVE" position, the subwoofer is optimized for an 80 Hz crossover with a 24 dB/octave slope.

For optimal performance in this position, we strongly recommend using an M&K HP-80 High- Pass Filter. Your subwoofer with this filter and M&K Satellites forms a 4th order Linkwitz-Riley crossover between satellite and subwoofer. The linear phase of this crossover means uncompromised performance with great flexibility in system setup without elaborate calibrations or adjustments.

VARIABLE

When the toggle switch is set to the "VARIABLE" position, the filter control knob is activated. This

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MK Sound MX-5000THX Mk II, MX-350THX Operation with a NON-THX Processor, Setting Subwoofer Level THX, Variable
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MX-350THX, MX-5000THX Mk II, MX-350THX specifications

MK Sound is a renowned name in the world of high-performance audio, and their lineup, particularly the MK-5000THX Mk II and MX-350THX, showcases their commitment to innovation, precision, and immersive sound experiences. The MX-5000THX Mk II is a powerful subwoofer designed to deliver deep, rich bass that enhances any audio system, making it an ideal choice for both home theater enthusiasts and audiophiles.

Featuring advanced technology, the MX-5000THX Mk II utilizes a high-excursion 15-inch driver that creates an impressive low-frequency response down to 20 Hz. This subwoofer is THX certified, ensuring it meets rigorous standards for performance and reliability. The design approach of the MX-5000THX Mk II incorporates a dual-firing configuration, allowing it to produce a more balanced and immersive soundstage. Its robust amplifier provides 500 watts of continuous power, with dynamic peaks allowing it to deliver visceral audio that can be felt as much as heard.

In contrast, the MX-350THX is a more compact yet equally formidable subwoofer option. Its smaller 12-inch driver does not compromise performance, delivering an impressive low-end response ideal for smaller rooms or systems where space is a premium. Like its larger sibling, the MX-350THX also boasts THX certification, reflecting its ability to reproduce cinematic sound with accuracy and impact. The subwoofer is engineered with a down-firing design that aids in better integration with room acoustics, providing a smoother overall bass response.

Another standout feature across these models is the flexibility in setup options, with multiple input configurations that support various audio sources, including high-level and low-level inputs. This versatility allows users to seamlessly integrate these subwoofers into their existing home theater or music systems.

In terms of aesthetics, both the MX-5000THX Mk II and MX-350THX are designed with clean lines and a modern look, ensuring they can fit seamlessly into any room decor. With robust build quality, these units are built to withstand the rigors of home use while delivering consistent performance.

In summary, MK Sound’s MX-5000THX Mk II and MX-350THX deliver exceptional quality and performance for both casual listeners and serious audio enthusiasts. With advanced technologies, THX certification, and versatile setup options, these subwoofers represent a significant investment in sound quality, elevating any audio experience to new heights.
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