MK Sound V-1250THX Operation of the Bass Level Switch, Wiring with a NON-THX Processor or Preamp

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V-1250THX subwoofer

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OPERATION OF THE "BASS LEVEL" SWITCH

When using the subwoofer with a non-THX processor, preamp, etc., this switch should be set to the "VARIABLE" position. The subwoofer level can then be set independently to match your speakers. The "CALIBRATED" mark is a reference relative to THX levels. For a discussion of this "CALIBRATED" mark, please see "OPERATION OF THE BASS LEVEL SWITCH (THX)" on page 7.

WIRING WITH A NON-THX PROCESSOR OR PREAMP

The "FROM PREAMP" RCA terminals on the subwoofer allow you to connect the subwoofer to preamp-level components other than THX controllers, such as preamplifiers, integrated amps and receivers with preamp outputs, high-pass filters, crossovers, standard surround sound processors, etc. All of the input connections and controls for the subwoofer are located on its large metal backplate, which can be found on the back panel of the subwoofer cabinet.

FIGURE 3 - WIRING ONE SUBWOOFER TO AN AMP OR PROCESSOR

WITH A SUBWOOFER OUTPUT JACK (NON-THX)

SUBWOOFER (or MONO) OUT

SURROUND

PROCESSOR

BASS LEVEL

 

 

LOW PASS

REFERENCE

LEFT/MONO

RIGHT

+

FILTER

+3 dB

VARIABLE

 

80 Hz

 

 

+6 dB

 

 

 

24 dB/OCTAVE

 

THX

INPUT

–

 

 

 

THX

 

 

 

PHASE

 

 

 

 

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS: RISQUE DE CHOC

ELECTRIQUE. NE PAS OUVRIR.

Manufactured under license

from Lucasfilm Ltd. Lucasfilm and THX are registered trademarks of Lucasfilm Ltd.

CAUTION:

DISCONNECT SUPPLY CORD

BEFORE CHANGING FUSE.

REPLACE FUSE ONLY

WITH SAME TYPE.

ATTENTION:

DEBRANCHER AVANT DE

REMPLACER LE FUSIBLE.

UTILIZER UN FUSIBLE

DE RECHANGE

DE MEME TYPE.

Made in U.S.A.

 

 

 

 

 

S O U N D

 

VAC O R PTO4 AMPR A T I O N

M I L L E R & K R E I S E L

120

 

 

 

50/60 Hz

1 0 3 9 1 J e f f e r s o n B lv d ,

C u lv e r C it y , C A SLOW9 0-BLOW2 3 2 3 1 0 / 2 0 4 - 2 8 5 4

 

 

 

 

 

If your surround processor has only one PREAMP OUTPUT (and no SUBWOOFER OUT), and you do not have an M&K High-Pass Filter or crossover, you must use a Y-connector to feed the amplifier and subwoofer. See Figure 5 above. If you have a surround sound processor with a SUBWOOFER OUTPUT jack, use it to feed the subwoofer. See Figure 5 on page 10.

Some surround processors/receivers/amps have very low output levels from their SUBWOOFER OUTPUT jacks. If you do not get enough bass when using the SUBWOOFER OUTPUT jacks on a non- THX processor, use that processor's PREAMP OUTPUT jacks instead. See Figure 5.

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Contents THX Select powered subwoofer Wiring Diagrams Table of Contents1250THX subwooferpage Safety InstructionsWhere to Place Your Subwoofer IntroductionOther 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 Operation of the LOW Pass Filter Switch THX Testing the Subwoofer THX ModeOperation of the Bass Level Switch THX Calibrating the Subwoofer THXUsing TWO Subwoofers THX Setting Subwoofer Level THXOperation of the LOW Pass Filter Switch Operation with a NON-THX ProcessorWiring 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 Testing the Subwoofer NON-THX Setting the Subwoofer Level NON-THXUsing TWO Subwoofers NON-THX SATELLITE/SUBWOOFER Phasing Test Phasing Test Method ONEPhasing Test Method TWO If your subwoofer has no output TroubleshootingIf YOU Need to Replace the External Fuse Replacement Fuse ValuesIf YOU Need Service SpecificationsCabinet 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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