MK Sound SW-150 operation manual Pre-ConstructionInstallation, Satellite/Subwoofer Phasing Test

In-wall Operation Manual

6. Pre-Construction Installation	!	IMPORTANT! - MAKE SURE WALL ELECTRICITY IS	!
		TURNED OFF BEFORE STARTING INSTALLATION

staples

1.Attach the mounting strips to the pre-construction bracket with the included sheet metal screws.

2.Attach the bracket assembly to the wall studs with screws or nails (not included).

3.Run the speaker wire to the location of the bracket. Secure the wire to one of the studs using staples or “U” nails. Make sure that the wire is clear of the opening or it may be damaged when the drywall is cut.

7. SATELLITE/SUBWOOFER PHASING TEST

When using a subwoofer with your SW-150, a phasing test must be performed to insure good bass blending. This test insures optimum sound in the critical bass frequencies where your Subwoofer and Main speakers overlap.

Play a familiar CD or DVD 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 phase of either the subwoofer or BOTH Main speakers.

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.

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