Bose 901 Series IV Direct Reflecting System Owner's Guide

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Bose 901 Series IV Direct Reflecting Speaker System Specification

The Bose 901 Series IV Direct Reflecting Speaker System is engineered to deliver a unique acoustic performance that enhances sound quality through the integration of direct and reflected sound waves. This speaker system features a nine-driver configuration per speaker enclosure, with eight drivers positioned at the rear to reflect sound off the walls, creating a spacious and immersive audio experience. The innovative design emphasizes Bose's direct/reflecting principle, simulating the natural sound field of a live performance. Each driver measures approximately four and a half inches, providing a balanced frequency response across the audio spectrum. The system also includes an active equalizer, which is essential for optimizing the sound output by tailoring the frequency response to the room acoustics and speaker placement. The equalizer ensures the reproduction of deep bass, clear mids, and crisp highs, enhancing overall sound fidelity. The Bose 901 Series IV is encased in a durable cabinet with a sleek and minimalist design, suitable for various interior aesthetics. This system is compatible with a wide range of amplifiers and receivers, allowing for flexible integration into existing home audio setups. With a power handling capacity that accommodates both moderate and high-volume listening preferences, the Bose 901 Series IV is designed for audiophiles seeking a rich and enveloping sound experience. This speaker system exemplifies Bose's commitment to innovative audio solutions, providing users with a unique blend of advanced acoustic engineering and elegant design.

Bose 901 Series IV Direct Reflecting Speaker System F.A.Q.

How do I properly connect the Bose 901 Series IV speakers to my amplifier?

To connect the Bose 901 Series IV speakers, ensure that you use the Bose 901 Active Equalizer. Connect the speakers to the amplifier's speaker terminals and then connect the equalizer between your preamplifier or receiver's tape monitor loop. Make sure all connections are secure and consult your amplifier's manual if necessary.

What is the ideal placement for Bose 901 Series IV speakers in a room?

Place the Bose 901 Series IV speakers at least 12 inches away from the rear wall and 18 inches from the side walls for optimal sound reflection. They should be positioned at ear level when seated, ideally on speaker stands, to ensure the best direct and reflective sound balance.

How do I clean and maintain my Bose 901 Series IV speakers?

To clean the Bose 901 Series IV speakers, use a soft, dry cloth. Avoid using any cleaning fluids or sprays. Regularly check the speaker connections and equalizer for dust buildup and gently clean with compressed air if necessary.

What should I do if my Bose 901 Series IV speakers produce distorted sound?

If you experience distorted sound, first check all cable connections for security. Ensure the Bose 901 Active Equalizer is correctly connected and active. Verify that the amplifier settings do not exceed the speakers' power handling capabilities. If distortion persists, consider having the speakers inspected by an authorized service center.

Can I use Bose 901 Series IV speakers without the equalizer?

The Bose 901 Series IV speakers are designed to work with the Bose 901 Active Equalizer. Using them without the equalizer will significantly affect sound quality and is not recommended. The equalizer is essential for achieving the intended audio performance.

How can I troubleshoot if one of my Bose 901 Series IV speakers is not working?

First, check the speaker connections and ensure they are properly secured. Swap the channels on your amplifier to see if the issue follows the speaker or remains on the same side. If the problem persists with the same speaker, it might need servicing.

What is the power handling capacity of the Bose 901 Series IV speakers?

The Bose 901 Series IV speakers have a power handling capacity of 10-450 watts per channel. Ensure your amplifier is within this range to avoid damage to the speakers.

How do I replace the speaker drivers in my Bose 901 Series IV?

Replacing speaker drivers should ideally be done by an authorized service center. If you choose to do it yourself, remove the grille, unscrew the faulty driver, disconnect the wires, and replace it with a new driver, ensuring proper polarity and secure connections.

What are some common issues with the Bose 901 Series IV equalizer and how can I fix them?

Common issues include power problems, loose connections, and faulty circuitry. Ensure the equalizer is properly connected and receiving power. If problems persist, consider having it inspected by a professional technician.

How can I improve the bass response of my Bose 901 Series IV speakers?

Ensure your speakers and the equalizer are properly set up. Adjust the placement of your speakers within the room, as proximity to walls can enhance bass response. Check the equalizer settings and make sure it is functioning correctly.