MK Sound CENTER-850 - Manual (Page 10)

If your Subwoofer has a PHASE switch on its back panel, move it either
from (+) to (—) or vice versa.
If your Subwoofer does not have a PHASE switch, it takes a bit more
work. You will have to change the Positive and Negative speaker inputs on
the back of BOTH Main speakers.
You can do this at the back of both Main speakers, or at the Subwoofer's
TO SPEAKERS terminals, but never at both locations. The lead that was on
the Positive (+) terminal should be switched to the Negative (—) terminal, and
vice versa.
When switching speaker wires, take care to protect your
amplifier. Make sure that the wires do not touch each other when you are
making the switch.
As a safety measure, we suggest that you turn the
amplifier off before making the switch.
Now listen to the same musical passage as you did earlier, concentrating
on the mid-bass region. If you hear less bass, the original connection (or
switch position) was correct. If you hear more bass, the new connection (or
switch) is correct.
You need to perform this test because when Main speakers are located
separate from a Subwoofer, each speaker is at a different distance from your
ear. In some cases, the difference will be just enough so that the output from
the Subwoofer arrives out of phase with the output of the Satellites. When this
happens, that critical mid-bass is actually cancelled. You should re-do this
test any time you move your speakers.
If you want to experiment further, move the Main speakers either towards
or away from your listening position, making changes in small increments.
This will "focus" the system's sound to its optimum. When you hear the best
combination of stereo image localization and maximum impact and output in
the mid-bass, you have the ideal location.
8. USE WITH M&K STANDS & BRACKETS
The LCR-850/851/650/651 and Center-850/851 speakers contain
threaded inserts on their back baffles. One set has two 1/4-20 inserts and the
other is a single 3/8" insert. You can use either of these to securely attach the
speakers to an M&K LDM-850/851 stand, and M&K ST-series speaker stand,
or M&K ST wall-mount brackets. Both the M&K stands and brackets offer tremendous flexibility for installation in
a wide variety of environments, and both are available in several configurations. This mounting scheme can also
be used with Omnimount brackets.
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 Speakers have extremely high power handling ability (especially for Main speakers), they still can be
damaged by relatively low powered amplifiers.
While very few M&K Speakers 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.
SATELLITE SPEAKER
ST Wall Bracket - Fixed
(order as ST WALL FIX)
ST Corner Bracket - Tilt
(order as ST CRNR TILT)
ST Corner Bracket - Fixed
(order as ST CRNR FIX)
ST Wall Bracket - Tilt
(order as ST WALL TILT)
WALL MOUNTING OPTIONS
5 UP
12 DOWN
O
O
5 UP
12 DOWN
O
O
ROTATION
ROTATION
ROTATION
ROTATION
TILT
TILT
4.5"
4.5"
6.5"
6.5"
LDM-850/LDM-851
30"
FIGURE 3
9