MK Sound S-150P THX - Manual (Page 10)

Play a familiar CD, LP, or tape with steady, consistent bass content through your system.
Listen carefully to the "mid-bass" region of 75 - 125 Hz. This is the part of the spectrum where
electric or string basses and drums predominate. Then, reverse the Positive and Negative
speaker inputs on the back of BOTH Satellite speakers.
You can do this at the back of both Satellite 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.
Now listen to the same musical passage as you did earlier, concentrating on the mid-bass
region. If you hear less bass, the original connections were correct. If you hear more bass, the
new connections are correct.
You need to perform this test because when Satellite 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.
M&K ST-Wall Tilt Bracket
M&K ST-Stand System
(ST-1 Base, ST-Leg, ST-Tilt Bracket, ST-
Uni III Bracket) Omnimount 100 Series
FIGURE 2
FIGURE 3
FIGURE 4
S- 150 P THX Manual