MK Sound S-90, S-1C, S-80 SX-7 Speaker Damage & HOW to Avoid IT, If YOU Need Service

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satellite speakers

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10. SPEAKER DAMAGE & HOW TO AVOID IT

An important factor to consider with any loudspeaker system is the potential for speaker damage. Even though your M&K Satellites have extremely high power handling ability (especially for Satellite speakers), they still can be damaged by relatively low powered amplifiers.

While very few M&K Satellites are actually returned for service, the vast majority of those returned are not for manufacturing defects. Instead, they are returned because they have been overdriven, almost always because the amplifier or receiver used was driven into clipping distortion. This damage is considered abuse, and is not necessarily covered under warranty.

This clipping distortion occurs when the demands of the music are greater than the amplifier's available power. It can occur at 20 watts with a small amplifier, or at 400 watts with a large amplifier. When this happens, the amplifier's output waveform (which should look like a smooth arc) is "clipped" off, exhibiting a flat top instead of the arc.

This flat top contains multiples of the original amplified frequencies, sometimes at higher levels than the original signal itself. For tweeters, this can be very damaging, as this distortion is well above the audible range (where you are unable to hear it), and where the tweeter is most vulnerable to damage.

When an amplifier clips, its sound becomes harsh and grating, and a break-up is often audible in the bass frequencies. It will become uncomfortable to listen to, especially when compared to a slightly lower volume level. When you are listening at high volume levels, be aware of the onset of clipping distortion, and turn the volume down slightly if the sound takes on the character described above.

When tone controls or equalizers are used to boost frequencies, the problem occurs much more rapidly. Even a small boost of low or high frequencies can easily double the power requirement and lead to amplifier clipping at moderate levels. Therefore, you should use your tone controls judiciously, avoiding extreme boosts of the bass and treble controls, especially when you are listening at high volume levels.

The best way to avoid speaker damage is to use common sense. Use moderate boosts of tone controls or equalizers, at the very most. Listen carefully for any harshness and break-up, especially at high volume levels, and turn down the volume when needed. If you cannot get enough volume, you may need to consider a higher-powered amplifier. If you have any questions about this, please contact M&K, and we will be happy to discuss it with you further.

11.BI - AMPLIFYING YOUR SATELLITES WITH M&K HIGH PASS FILTERS

One excellent way to improve the sound of your Satellite speakers (and protect them if you listen at high volume levels to music with substantial deep bass output), is by using an M&K High-Pass Filter. The M&K LP-1S and VF-100 High-Pass Filters improve the performance of any system that allows for separation of its preamp and power amp stages, by filtering the bass signal fed to the main amplifier and Satellite speakers.

These filters will give you greater dynamic range, lower distortion, and an increased maximum output level. If you have any questions about the suitability of your components, please contact your M&K dealer or the factory.

To use these filters with an integrated amp or receiver, the amp/receiver MUST have back panel RCA jacks labelled Preamp/Main Output AND Power Amp/Main Input (or Front Out/Front In). There may be a switch or jumper connections between them. If you can use one of these filters, you simply connect one set of shielded RCA - RCA interconnect cables between the receiver, amp or preamp's Main Output and the LP-1S or VF-100, with a second set between the LP-1S or VF-100 and the Main Input of the receiver or amplifier, and a third set from the LP-1S or VF-100 to the Subwoofer. See the instruction sheet that comes with the High-Pass Filter for more information.

12. IF YOU NEED SERVICE

Contact your dealer or M&K with a complete description of the problem. Please have the unit's model and serial numbers (found on the back of the cabinet), date of purchase, and your dealer's name. You can call M&K between 8:30 AM and 5:00 PM Pacific Time, Monday through Friday, at (310) 204-2854. If you call outside these hours, leave a message, and we will return your call promptly.

DO NOT RETURN YOUR SPEAKERS TO THE FACTORY FOR

SERVICE WITHOUT OBTAINING PRIOR AUTHORIZATION

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Contents Satellite speakers Table of Contents Diagrams100B Speaker HOOK-UP & Usage Placement of Your Satellite SpeakersIntroduction Special Note TV Shielded Satellite Speakers100B Midrange Contour Switch 100B Hookup100B Variations of Sound Wiring with the S-100B 100B Treble Contour SwitchHookup Midrange Contour Switch90 Speaker HOOK-UP & Usage Variations of SoundWiring with the S-90 Treble Contour Switch80 Speaker HOOK-UP & Usage High Efficiency / LOW Efficiency InputsWiring with the S-80 High EFFICIENCY/LOW TweeterLOW Efficiency / LOW Tweeter 1C Speaker HOOK-UP & Usage Wiring with the S-1C 1C Midrange Contour Switch1C Treble Contour Switch 1C Directivity Control SwitchBI Wiring the S-1C Optimizing Speaker Placement BI Wiring with the S-1CLocation Away from Reflecting Surfaces Separation Between SpeakersHeight or Angle Separation Between Left and Right SpeakersHome Theatre Usage Cabinet Orientation Horizontal or VerticalSpeaker Placement SATELLITE/SUBWOOFER Phasing Test SubwooferSpeaker Damage & HOW to Avoid IT If YOU Need ServiceBI Amplifying Your Satellites with M&K High Pass Filters Cabinet Maintenance SpecificationsSelecting the Right Omnimount Bracket Uses Omnimount 75-WB Selecting the Right Omnimount BracketUSE Omnimount 75-WA Uses Omnimount 53-RST

S-80 SX-7, S-90, S-1C specifications

MK Sound has long been a name synonymous with high-quality audio solutions, and their product lineup, including the S-1C, S-90, S-80, and the SX-7, showcases the brand's commitment to delivering exceptional audio performance. Each of these models has been engineered with specific technologies and characteristics that cater to both audiophiles and casual listeners alike.

The MK Sound S-1C is a compact center speaker designed to deliver clear vocal reproduction and an engaging soundstage. It features a high-quality 1-inch tweeter and dual 5.25-inch woofers that work in unison to provide a balanced sound profile. This model excels in dialogue clarity, making it an essential component for home theater setups. The S-1C also boasts a frequency response that extends down to 70 Hz, ensuring it can adequately reproduce lower frequencies for a fuller sound experience.

Moving on to the S-90, this floor-standing speaker is a testament to MK Sound's dedication to performance and precision. It features a 1-inch tweeter and three 5.25-inch woofers, allowing for a powerful bass response and detailed high frequencies. With a frequency response of 40 Hz to 20 kHz, the S-90 is designed to fill larger rooms with immersive sound. The speaker's high sensitivity level allows it to produce loud volumes without distortion, making it an excellent choice for music and movie enthusiasts.

The S-80 is another stellar offering, designed as a versatile bookshelf speaker. Like the S-90, it features a 1-inch tweeter paired with dual 5.25-inch woofers. With a compact design, the S-80 can easily fit into smaller spaces while still delivering a wide soundstage and impressive audio fidelity. Its frequency range extends from 45 Hz to 20 kHz, ensuring a broad sonic spectrum. The elegant cabinet design also integrates acoustic dampening technologies to minimize distortion and enhance sound quality.

Finally, the SX-7 is an advanced subwoofer that reinforces MK Sound’s commitment to low-frequency performance. It includes a powerful 12-inch driver and a built-in amplification system that delivers deep, impactful bass. With a frequency response extending down to 25 Hz, the SX-7 is perfect for users seeking a cinematic experience at home. Its adjustable crossover and phase control features allow users to tailor the subwoofer’s performance to their specific room and listening preferences.

In summary, MK Sound’s S-1C, S-90, S-80, and SX-7 represent a harmonious blend of innovative technology and exceptional sound reproduction. Each model is crafted to not only meet but exceed the expectations of discerning audio enthusiasts, making them a powerful addition to any sound system.
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