MTX Audio SW2 User Manual

PLACEMENT OR POSITIONING

Your new subwoofer will work well in a variety of locations. However,

placement in your listening room will affect its performance. Since the

wavelengths of sound reproduced by your subwoofer are large compared

to its size, those sounds are omni-directional in nature. This means that

locating your subwoofer in relation to your left and right main speakers will

not affect the directional cues which they provide.

Because the sounds you hear are a combination of direct sound from

the speaker and reflected sound from the walls, ceiling, and floor of your

listening room, placement of the subwoofer in relation to room boundaries

changes the balance of what you hear at low frequencies. In that low

frequency range, the dimensions of most rooms are comparable to the

wavelengths of those sounds. As sound propagates and reflects in the

room, “standing waves” are created at frequencies where the wavelength

of sound or multiples of the wavelength are equal to one of the dimensions

of the room. At your listening position, these standing wave patterns of

reflected sound add together in and out of phase causing large variations

in the response that you hear.

As a general rule, locating your subwoofer near the corner of the room will

increase its overall output, but will excite more standing waves in the room

and may result in a more uneven response. Locating your subwoofer along

a wall will usually mean less acoustic output but a somewhat smoother

response. A middle of the room location would suggest the smoothest

response with the least output capability. Of course, any location will be a

compromise between acoustic performance and the aesthetic blend of the

subwoofer enclosure with the decor and furnishings of your room. Don’t

be afraid to experiment with the location of your subwoofer in your room for

the best results at your listening position. As with any other listening test,

use program material that you are familiar with that has substantial bass

content.

WIRING AND CONNECTIONS

Turn off all power to your subwoofer and other equipment before

making any connections.

Installation using speaker level inputs

A) For amplifiers with one set of speaker connections.

If a preamplifier output connection is not available on your amplifier

or receiver, your subwoofer can be connected using your equipment’s

speaker outputs. These connections are made using commonly available

18 or 16 gauge lamp cord or speaker hook-up wire. Observe correct

polarity by connecting red(+) to red(+) and black(-) to black(-) for both left

and right channels. Connect your amplifiers speaker output terminals to the

subwoofer’s speaker level input terminals as well as to your main stereo

speakers according to Figure B.

FIGURE B

Right

Speaker

Left

Speaker

Receiver

Power Amplifier