Adjusting the Crossover Control

When using the Line Level inputs (not the LFE input) the subwoofer’s built-in crossover is engaged. As a starting point, set the crossover control on the subwoofer about 10Hz higher than the lower limit of your main speakers’ bass response. Fine-tune the crossover setting by ear for the smoothest blend with your main speakers. The best setting of the crossover control will depend on speaker placement and personal preference.

Speaker level

Use these high-level terminals with receivers that do not have subwoofer output. The speaker inputs accept both left and right channel speaker signals from your receiver. When using a home theater receiver, set the speaker type to “Large.” The large setting will produce a fuller sound.

Note

Certain receivers use speaker grounding circuits that may be incompatible with external powered audio products, such as powered subwoofers. When speaker wire is used instead of line level cables, this incompatibility can result in an audible hum when the receiver is turned off or switched to a different speaker channel.

If this should happen with your MSubwoofer, you will need to make a ground cable and

single conductor (-) RCA to (-) RCA ground cable

connect it to either RCA line input on the subwoofer and any unused RCA line input or output on your receiver (see diagram).

The proper ground cable for this applica- tion should consist of two male RCA plugs that have their negative outside terminals (or “sleeve”) connected to each other by any length of single conductor copper cable.

use either RCA jack

back of subwoofer

DIGITAL

INPUT

CD

COAXIAL

OPTICAL

D-TV/CBL

DVD

MD/CD-R

MD/CD-R

OPTICAL

DIGITAL

OUTPUT

 

6 CH INPUT

MAIN

 

SURROUND

 

SUB

CENTER

WOOFER

 

CD

IN

(PLAY)

MD

/CD-R

OUT

(REC)

R L

AUDIO

 

AUDIO

VIDEO

 

R

L

S VIDEO

VIDEO

 

 

V-AUX

 

 

 

IN

 

 

 

VCR

 

 

 

OUT

 

 

 

D-TV

 

 

 

/CBL

 

 

 

DVD

 

 

 

S VIDEO

VIDEO

 

 

MONITOR OUT

TUNER

 

 

 

AM

 

 

 

ANT

 

 

 

GND

COMPONENT VIDEO

 

PR/CR

PB/CB

Y

 

 

DVD

 

 

75￿ UNBAL.

D-TV

 

 

FM

/CBL

 

 

 

 

 

ANT

 

 

 

 

MONITOR

 

 

 

OUT

 

 

Note: The inside positive (or "pin") terminals should not be wired in either plug.

back of receiver

use any available RCA jack

9

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Boston Acoustics M250, M350, M340 Adjusting the Crossover Control, Speaker level, Single conductor RCA to RCA ground cable

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.

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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.