bose 301 series ii manual pdf

The Bose 301 Series II is a bookshelf speaker system renowned for its Direct/Reflecting® speaker technology, delivering a spacious stereo image. It features a 10-inch acoustic mass woofer and two 3-inch high-frequency drivers, designed for optimal placement flexibility. Below are key sections for setup, features, specifications, operation, and maintenance.

Features at a Glance

Key components: Direct/Reflecting® speaker design, 10-inch acoustic mass woofer, dual 3-inch high-frequency drivers, adjustable high-frequency controls, and vinyl-clad wood cabinet.

Unpacking and Inspection

Carefully unpack and inspect contents. Ensure all components are present and undamaged.

1. Remove speaker from packaging, including protective foam.
2. Inspect cabinet, grille, and drivers for any visible damage.
3. Check for included accessories (manual, warranty card).
4. Keep packaging for future transport or storage.

WARNING! Handle speakers with care; they are heavy. Lift using the cabinet, not the grille or drivers.

Placement Guidelines

Optimal placement is critical for best performance. Follow these guidelines for stereo imaging.

1. Position speakers at ear level when seated.
2. Place speakers on sturdy shelves or stands, away from walls for initial setup.
3. Angle speakers slightly inward toward the listening position.
4. Ensure rear-facing high-frequency driver has clearance (at least 6 inches from wall).
5. Experiment with placement to achieve desired soundstage.

CAUTION! Do not place speakers in enclosed cabinets or directly against walls without testing sound quality.

Specifications

• Type: 2-way, 3-driver Direct/Reflecting® bookshelf speaker.
• Woofer: 10-inch acoustic mass.
• High-Frequency Drivers: Two 3-inch drivers (one front, one rear).
• Frequency Response: 45Hz - 20kHz.
• Nominal Impedance: 8 ohms.
• Recommended Amplifier Power: 10 - 150 watts per channel.
• Sensitivity: 90dB SPL at 1 meter with 1 watt input.
• Dimensions (H x W x D): Approx. 23 x 13 x 11 inches.
• Weight: Approx. 25 lbs per speaker.
• Finish: Walnut or Black vinyl wood grain.

Connecting to Your System

Connect speakers to amplifier/receiver using appropriate speaker wire.

1. Turn off amplifier/receiver before making connections.
2. Strip 1/2 inch of insulation from speaker wire ends.
3. Connect positive (+) terminal on amplifier to positive (+) terminal on speaker (typically red).
4. Connect negative (-) terminal on amplifier to negative (-) terminal on speaker (typically black).
5. Ensure connections are tight and secure at both ends.
6. Repeat for second speaker, maintaining consistent polarity.

Tip: Use high-quality speaker wire of sufficient gauge (16 AWG recommended for runs under 50 feet).

Direct/Reflecting® Technology

This proprietary technology uses both direct and reflected sound to create a wide, enveloping soundstage.

How it works: The front-facing high-frequency driver delivers direct sound to the listener, while the rear-facing driver reflects sound off walls, blending direct and reflected audio for a natural, room-filling experience.

Adjustment: Use the high-frequency controls on the rear panel to balance treble output between direct and reflected sound based on room acoustics and personal preference.

Operation and Listening

Once connected and placed, follow these steps for optimal listening.

1. Turn on amplifier/receiver and select source.
2. Start with volume low and gradually increase to desired level.
3. Adjust high-frequency controls if treble balance needs modification.
4. For critical listening, sit in the "sweet spot" equidistant from both speakers.
5. Experiment with speaker toe-in (angling) to focus stereo image.

WARNING! Do not exceed amplifier's power rating; distortion can damage speakers.

Care & Maintenance

Proper care ensures long-term performance and appearance.

• Dust cabinet with a soft, dry cloth.
• Clean grille by gently vacuuming with brush attachment.
• Avoid liquids, solvents, or abrasive cleaners.
• Do not remove drivers or attempt internal repairs.
• Store in a dry, temperate environment if not in use.

CAUTION! Never push on grille or drivers; they are delicate and can be permanently damaged.

Regulatory Information

Complies with applicable safety and electromagnetic compatibility standards. Bose and the Bose logo are registered trademarks of Bose Corporation. Direct/Reflecting® is a registered trademark of Bose Corporation. For support, visit www.bose.com or contact Bose Customer Service.

Troubleshooting

Service: For technical issues not resolved above, contact Bose Customer Service. Do not open cabinet; void warranty.