MSubwoofer Operation

Audio On/Auto/Mute

Plug the MSubwoofer’s AC cord into a wall outlet. Do not use the outlets on the back of the receiver. Set the Audio On switch to the desired setting.

AUDIO ON – The MSubwoofer audio is always on.

AUTO – The MSubwoofer audio will turn on whenever a signal is detected. If no signal is detected after several minutes, it will automatically enter the Mute mode.

MUTE – The MSubwoofer is muted and will not produce any sound. You may want to unplug your MSubwoofer if you will not be using it for some time or wish to conserve electricity. You may also turn off the main power switch, located next to the power cord.

An LED indicator next to the Polarity switch indicates what mode the MSubwoofer is in.

OFF – The MSubwoofer is unplugged or power switch is in the "Off" position.

RED – Mute (No signal detected, Audio Off )

BLUE – Audio On (Signal detected, Audio On)

The MSubwoofer will automatically enter the Mute mode after several minutes when no signal is detected from your system. The MSubwoofer audio will then turn on when a signal is detected.

Polarity Control

(0° or 180°): Selects regular (0°) or inverted (180°) phase for the MSubwoofer. Set this switch to provide the fullest, most dynamic bass. The effect of phase will be most audible on low-frequency percussion instruments or music with a continu- ously repeating bass line.

Crossover Control

Adjusts the frequency of the low pass filter for the MSubwoofer. Note: This control is not active when using the LFE input jack.

Volume Control

Turn the MSubwoofer Volume control to the 11 o’clock position. If no sound emanates from the MSubwoofer check the AC- line cord, Audio On switch, Power switch, and input cables.

Adjust the MSubwoofer Volume control until you hear a match between the main speaker and MSubwoofer. Bass response should not overpower the room but rather be adjusted so there is a natural blend across the entire musical range.

Maintenance and Service

All wiring connections should be inspected and cleaned at least once a year.

If a problem does occur, make sure that all connections are properly made, secure and clean. If a problem occurs in one loudspeaker, rewire that speaker in a different location within the system. Should the problem persist then the problem is with the speaker. If the speaker works fine in the new position it is a strong indication of an issue with the wiring or electronics in the system. In the event that your speakers ever need service, contact your Boston Acoustics dealer or visit bostonacoustics.com.

M340, M250, M350 specifications

Boston Acoustics, renowned for its commitment to superior sound quality and innovative design, offers a range of speakers that cater to audiophiles and casual listeners alike. Among these models are the M350, M250, and M340, which stand out for their exceptional performance and advanced technologies.

The Boston Acoustics M350 is a highlight in the company's lineup, designed as a floor-standing speaker that delivers robust sound across various frequencies. With dual 6.5-inch woofers and a 1-inch soft dome tweeter, the M350 ensures an expansive soundstage with impressive bass response. Its dual 8-ohm impedance allows for compatibility with a range of amplifiers, making it a versatile choice for home audio enthusiasts. The cabinet is built with a strong MDF construction, minimizing resonance and distortion. The M350's sleek design integrates seamlessly into any decor, offering both aesthetic appeal and acoustic performance.

Next, the M250 serves as a compact yet powerful bookshelf speaker, perfect for those who desire top-notch audio in a smaller form factor. Featuring a 5.25-inch woofer paired with a 1-inch tweeter, the M250 is engineered to produce clear mid-range frequencies and crisp highs. The speaker's rear bass port enhances low-frequency performance, ensuring that the listener enjoys a rich and full sound experience. The M250 is ideal for both music playback and home theater setups, providing a remarkable audio experience without taking up too much space.

Lastly, the M340, another excellent option in the Boston Acoustics family, combines elements of both the M350 and M250. This speaker features a hybrid design that includes a 6.5-inch woofer and a 1-inch tweeter, allowing for detailed sound reproduction and a wide frequency range. The M340 is built with advanced speaker design technologies, including a computer-optimized crossover network that ensures a seamless blend between the woofers and tweeters. Its elegant design and versatile mounting options make it suitable for various room setups, whether in dedicated music rooms or a cozy living space.

In summary, Boston Acoustics' M350, M250, and M340 speakers represent a dedication to quality sound, innovative design, and user-friendly versatility. Their unique features and technologies make them standout choices for anyone looking to enhance their audio experience, whether for music or home theater applications. With Boston Acoustics, listeners can expect nothing short of excellence in sound reproduction.