Boston Acoustics M250, M350, M340 Adjusting the Crossover Control, Speaker level, Back of receiver

Page 9

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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Contents Series Canadian Users American UsersIntroduction FeaturesMCenter MSurround M25 MSubwoofer M250 M340 M350Specifications Unpacking the System Where to Place the SpeakersGrilles Feet & SpikesFront Left and Right Speakers ConnectionsCenter Speaker Surround SpeakersSubwoofer Multi-Channel AVR or Preamp Connecting to Electronics Without a Subwoofer OutputSpeaker level Adjusting the Crossover ControlSingle conductor RCA to RCA ground cable Use either RCA jack Back of subwooferMSubwoofer Operation Maintenance and ServiceLimited Warranty If Service Seems NecessaryFor EU Customers Only Usuarios canadienses Usuarios estadounidensesCaracterísticas IntroducciónEspecificaciones Rejillas Desembalaje del sistemaPies y clavos Dónde colocar los parlantesParlantes frontales izquierdo y derecho ConexionesParlante central Parlantes envolventes¡Importante Conexión del sistema electrónico sin una salida de subwoofer Ajuste del Control de Transición Nivel del parlanteNota Mantenimiento y servicio Funcionamiento de MSubwooferGarantía Limitada Si cree que necesita servicio técnicoSólo para clientes de la UE Utilisateurs canadiens Utilisateurs américainsCaractéristiques Spécifications Déballage du système Pieds et PointesOù placer les haut-parleurs Haut-parleurs avant gauche et droit BranchementsHaut-parleur central Haut-parleurs SurroundSubwoofer Multi-canal AVR ou Préampli Ajustement de la commande du filtre de coupure Niveau de haut-parleurRemarque Commande de polarité Maintenance et service après-venteContrôle du volume Fonctionnement du MSubwooferDemande de service après-vente Garantie limitéePour les clients de l’UE uniquement Utilizzatori canadesi Utilizzatori americaniCaratteristiche IntroduzioneSpecifiche Griglie Disimballaggio del sistemaPiedini e supporti Dove collocare gli altoparlantiAltoparlanti anteriori sinistro e destro ConnessioniAltoparlante centrale Altoparlanti surroundImportante Multicanale AVR o Preamp Connessione ad elettronica priva di unuscita subwooferRegolazione del comando Crossover Livello di altoparlanteNota Uso dellMSubwoofer Comando volumeManutenzione e servizi Comando delle polaritàGaranzia limitata Caso di necessità di assistenzaClienti UE Användare i Kanada Användare i USAFunktioner InledningSpecifikationer Galler Packa upp systemetSockel & Piggar Var man bör placera högtalarnaDe främre högra och vänstra högtalarna AnslutningarMittenhögtalare SurroundhögtalareViktigt BashögtalareFlerkanalig AVR eller förförstärkare Högtalarnivå Justering av övergångskontrollenObs Med enkelledare RCA till RCA-jordkabelHur man använder MSubwoofer Underhåll och serviceOm service är nödvändigt Begränsad garantiEndast för kunder inom EU Benutzer in Kanada Benutzer in den USAFunktionsumfang EinführungHochtöner M350 M340 M250 Frequenzbereich ±3 dBMitteltöner NiederfrequenztönerBespannung Auspacken des SystemsFüße und Spikes Aufstellort der LautsprecherLautsprecher vorne links und rechts VerkabelungZentrale Lautsprecher Surround-LautsprecherWichtig Mehrkanal AV-Receiver Oder Vorverstärker Anschließen an elektronische Geräte ohne Subwoofer-AusgangLautsprecher-Anschluss Speaker level Einstellen des FrequenzweichenreglersHinweis Subwoofer-RückseiteWartung und Kundendienst Bedienung des MSubwooferNur für Kunden aus EG-Staaten Eingeschränkte Garantie重要安全说明 包人造皮革的隔音板(除 MSubwoofer 和 MSurround 以外,均为白色) 带高品质饰面的圆角机箱设计 MCenter MSurround MSubwoofer M350 M340 M250系统开箱 前置左右扬声器 超低音扬声器 使用 LFE 端口将超低音扬声器连接到数字家庭影院系统 调整分频控制 保养和维修 保修期限 Constitution Way, Woburn, MA 01801 USA

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.