MK Sound V-1250THX operation manual Calibrating the Subwoofer THX, Testing the Subwoofer THX Mode

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V-1250THX subwoofer

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If you have two subwoofers, do not use a Y - connector to feed both inputs on each subwoofer. Connect the interconnect cable to the LEFT/MONO "INPUT" only. Run the Left interconnect cable to the Left subwoofer and the Right cable to the Right subwoofer. See Figure 2 on Page 6.

TESTING THE SUBWOOFER (THX MODE)

Once all of the interconnect cables are in place, you are just about ready to plug in the subwoofer. Set the "LOW PASS FILTER" toggle switch to the "THX" position and the "BASS LEVEL" toggle switch to the "THX" position.

Set the "SUBWOOFER PHASE" switch to the "+" position. If your THX controller has a SUB- WOOFER (OFF/ON) switch on its front panel, rear panel, or remote control, set it to ON. (See the controller's manual for details).

Plug the subwoofer's AC cord in. The red LED on the back panel should illuminate.

Play some program material that has good bass content through your system. Carefully advance the system volume control. You should hear the subwoofer operate. If you think the subwoofer isn't working, walk up to the speaker and listen to it from a distance of a foot or less.

If you confirm that it is not working, unplug the subwoofer and check all of your connections before trying it again. If you have a problem that you cannot solve, contact your dealer or the M&K factory.

When your system wiring is complete and the subwoofer is plugged into the wall, leave it plugged in, even when the system is turned off. The normal mode of operation for the subwoofer is to remain plugged in 24 hours a day. Among other things, this means that you don't have to walk over to the subwoofer to turn it on every time you want to use the system.

DO NOT PLUG THE SUBWOOFER INTO A SWITCHED OUTLET ON ANOTHER COMPONENT. IT CAN

DRAW UP TO 400 WATTS FROM THE AC LINE. IT MUST BE PLUGGED INTO A SOLID AC LINE.

5. CALIBRATING THE SUBWOOFER (THX)

On the back panel of the subwoofer, three toggle switches allow you to select various modes of operation. Two are described here. A description of the function of the third toggle switch can be found in section 7, SATELLITE & SUBWOOFER PHASING TEST (page 13).

OPERATION OF THE "LOW PASS FILTER" SWITCH (THX)

When using the subwoofer with a THX controller, this switch should be set to the "THX" position. When using the subwoofer with a standard stereo system or a surround sound processor that is not THX-certified, this switch should be set to the "80 Hz 24 dB/OCTAVE" position.

The THX mode bypasses the internal crossover of the subwoofer and fixes its gain to a standard setting. The THX controller contains the crossover and sets the rolloff point of the signal fed to the subwoofer to 80 Hz (with a Linkwitz-Riley characteristic).

OPERATION OF THE "BASS LEVEL" SWITCH (THX)

When using the subwoofer with a THX controller, this switch should be set to the "THX" position. The controller sets the output level of the subwoofer, so this switch disables the subwoofer's level control. The "CALIBRATED" level control mark is referenced to the level set by the "THX" switch. If you set the switch to "VARIABLE" and the level control to "CALIBRATED," its output level is the same as when you set the switch to "THX."

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Contents THX Select powered subwoofer Wiring Diagrams Table of Contents1250THX subwooferpage Safety InstructionsIntroduction Where to Place Your SubwooferOther SET is for USE with NON-THX Processors Operation with THX Components Connecting the Subwoofer to a THX ControllerWiring ONE Subwoofer with a THX Controller Calibrating the Subwoofer THX Testing the Subwoofer THX ModeOperation of the LOW Pass Filter Switch THX Operation of the Bass Level Switch THXOperation with a NON-THX Processor Setting Subwoofer Level THXUsing TWO Subwoofers THX Operation of the LOW Pass Filter SwitchWiring with a NON-THX Processor or Preamp Operation of the Bass Level SwitchUse a Y-connector To connect to Two subwoofers Wiring with the M&K HP-80 or VF-80 HIGH-PASS Filters NON-THX Setting the Subwoofer Level NON-THX Testing the Subwoofer NON-THXUsing TWO Subwoofers NON-THX Phasing Test Method ONE SATELLITE/SUBWOOFER Phasing TestPhasing Test Method TWO If your subwoofer has no output TroubleshootingIf YOU Need to Replace the External Fuse Replacement Fuse ValuesSpecifications If YOU Need ServiceCabinet Maintenance

V-1250THX specifications

The MK Sound V-1250THX is a high-performance subwoofer that embodies the pinnacle of audio technology, specifically designed for home theaters and professional sound environments. Known for its robust power and precision, the V-1250THX is an ideal choice for those who seek to elevate their sound experience to an immersive level.

At the heart of the V-1250THX lies its powerful 12-inch driver, meticulously engineered to deliver deep, impactful bass that resonates throughout the room. This driver is coupled with a high-output amplifier, delivering a remarkable 500 watts of continuous power and peaking at 1000 watts. This impressive power aligns with THX certification standards, ensuring an audio quality that meets the needs of discerning audiophiles and movie enthusiasts alike.

One of the notable features of the MK Sound V-1250THX is its advanced bass-reflex design. This design enables the subwoofer to continuously produce low frequencies that maintain clarity and precision without distortion. The ported cabinet design further enhances this characteristic, allowing for better airflow and reducing the risk of unwanted noise.

The subwoofer is also equipped with a versatile input configuration, supporting both single-ended and balanced connections, making it compatible with a wide range of AV receivers and processors. Furthermore, the V-1250THX comes with an adjustable phase control and variable low-pass filter, giving users the ability to customize the sound output to fit their specific environments and preferences.

In terms of build quality, the V-1250THX features a sturdy enclosure that minimizes resonance and vibration, ensuring that all energy is directed towards sound production. The aesthetically pleasing finish complements various home decor styles, making it an attractive addition to any audiovisual setup.

Additionally, the subwoofer's compact size allows for flexible placement without sacrificing performance. The MK Sound V-1250THX is not just a subwoofer; it is a cornerstone of a superior audio experience built on innovation and quality craftsmanship, perfect for anyone looking to enhance their sound experience with powerful and accurate low-end reproduction.
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