Boston Acoustics ASW 650, ASW 250 owner manual Operation

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Connecting to Electronics Without a Subwoofer Output

If the receiver in your system does not have a subwoofer or LFE output you can connect the subwoofer to a preamp output. Use a stereo RCA cable (not included) to connect the preamp outputs to the “L” and “R” Line Level inputs.

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.

Operation

Audio On/Auto/Mute

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

AUDIO ON – The subwoofer audio is always on.

AUTO – The subwoofer 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 subwoofer is muted and will not produce any sound. You may turn off the main power switch, if you will not be using it for some time or wish to conserve electricity.

An LED indicator next to the Polarity switch indicates what mode the subwoofer is in:

OFF – The subwoofer is unplugged (or the main power switch is off )

RED – Mute (No signal detected, Amp Off )

GREEN – Audio On (Signal detected, Amp On)

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

Polarity Control

(0° or 180°): Selects regular (0°) or inverted (180°) phase for the subwoofer. 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 continuously repeating bass line.

Crossover Control

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

Volume Control

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

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

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Contents Series American Users Canadian UsersSpecifications IntroductionBoston a Series Subwoofers Placement Options Unpacking the SystemConnecting the Subwoofer to Stereo ConnectionsDigital receiver Operation If Service Seems Necessary Maintenance and ServiceLimited Warranty For EU Customers OnlyUsuarios de los Estados Unidos Usuarios de CanadáEspecificaciones IntroducciónSubwoofers Boston Acoustics Serie a Desembalaje del sistema Opciones de colocaciónConexiones Conexión del subwoofer a estéreoReceptor digital Funcionamiento Si cree que necesita asistencia técnica Mantenimiento y ServicioGarantía Limitada Sólo para clientes de la UEUtilisateurs américains Utilisateurs canadiensSpécifications Caissons de graves Boston Acoustics de série aDésemballage du système Options de positionnementRécepteur ConnexionsConnexion du caisson de graves à un système stéréo Récepteur NumériqueFonctionnement Garantie limitée Entretien et serviceDemande de service après-vente Pour les clients de l’UE uniquementUtilizzatori americani Utilizzatori canadesiSpecifiche IntroduzioneSubwoofer a Series di Boston Acoustics Disimballaggio del sistema Opzioni di collocazioneConnessioni Connessione del Subwoofer ad un sistema StereoRicevitore digitale Funzionamento Caso di necessità di assistenza Manutenzione e serviziGaranzia limitata Clienti UEAnvändare i USA Kanadensiska användareSpecifikationer InledningSubwoofrar i Boston Acoustics A-serie Packa upp systemet PlaceringsalternativAnsluta subwoofern till stereo Ansluta subwoofern till digitala hemmabiosystem med LFEAnslutningar ReceiverDrift Begränsad garanti Underhåll och serviceOm service verkar behövas Endast för kunder inom EUAmerikanische Verbraucher Kanadische VerbraucherSpezifikationen EinführungSubwoofer der A-Serie von Boston Acoustics Auspacken des Systems AufstellungsoptionenAnschlüsse Anschluss des Subwoofers an ein Stereo SystemDigital-Receiver Betrieb Reparaturanforderung Wartung und KundendienstEingeschränkte Garantie Nur für Kunden in der EUPage Page Jubilee Drive, Peabody, MA 01960 USA

ASW 250, ASW 650 specifications

Boston Acoustics, a brand known for its quality audio products, has made significant waves in the world of subwoofers with models like the ASW 250 and ASW 650. Both subwoofers are designed to deliver powerful and precise bass, enhancing the overall audio experience in home theater systems and music playback.

Starting with the ASW 250, this subwoofer features a robust 10-inch polypropylene cone driver that is engineered for low-frequency response. This driver is paired with a built-in 150-watt RMS amplifier, allowing it to produce deep, resonant bass that can fill a room. One of the standout features of the ASW 250 is its adjustable low-pass crossover, which permits users to customize the subwoofer's integration with their main speakers. Additionally, the phase control switch helps ensure that the bass blends seamlessly with the other audio components, preventing any phase issues that can detract from audio quality.

On the other hand, the ASW 650 steps it up with a larger 12-inch driver and a more powerful 200-watt RMS amplifier. This model is designed to deliver an even more impactful bass response, making it ideal for those looking to enhance their home theater experience further. The ASW 650 also incorporates advanced technologies such as the BassTrac Circuitry, which prevents distortion at high volume levels, ensuring clean and controlled bass without any audible artifacts.

Both models offer flexible connectivity options, making them compatible with a variety of audio systems. They come equipped with line-level and speaker-level inputs, allowing for easy integration into existing setups. Moreover, the compact and stylish design of these subwoofers means they can fit into any decor while still providing the necessary acoustic performance.

In summary, the Boston Acoustics ASW 250 and ASW 650 subwoofers are excellent choices for audiophiles looking to enhance their sound systems. With their powerful drivers, robust amplifiers, and adjustable features, these subwoofers deliver deep and dynamic bass that brings music and movies to life. Whether you’re a casual listener or a dedicated music lover, the Boston Acoustics subwoofer lineup ensures a satisfying audio experience that embodies the essence of quality sound reproduction.
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