Bose Virtually Invisible 191 Manual

The Bose Virtually Invisible 191 is an in-wall loudspeaker designed for high-quality audio reproduction with minimal visual intrusion. It features a low-profile grille, paintable frame, and is engineered for easy installation in standard wall cavities. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Connections 6. Connecting to Audio Systems 7. Operation and Performance 8. Care & Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: In-wall speaker unit, paintable grille, mounting template, quick-connect terminals.

Feature	Description
Low-profile design	Minimizes visual impact; blends into wall surfaces
Paintable grille and frame	Customizable to match wall color and decor
Quick-connect terminals	For easy, secure speaker wire connections
Roto-block mounting system	Simplifies installation and ensures stability
High-excursion woofer	Delivers deep, accurate bass response
Tweeter with waveguide	Provides clear, wide-dispersion high frequencies
Built-in crossover	Optimizes frequency distribution between drivers
Magnetic grille attachment	Allows for easy removal and reattachment
Standard wall cavity fit	Designed for typical 16-inch stud spacing
Moisture-resistant materials	Suitable for use in bathrooms and kitchens

Installation

Unpack and inspect contents. Ensure proper tools and materials are available.

Choose location: Select wall area free of obstructions (wires, pipes). Use stud finder.
Prepare opening: Use provided template to mark cutout; cut drywall carefully.
Mount speaker: Insert into opening; rotate locking mechanism to secure.
Connect wires: Strip speaker wire ends; attach to quick-connect terminals (observe polarity).
Attach grille: Snap magnetic grille into place; paint if desired.

WARNING! Turn off power to area before cutting into walls. Ensure speaker is securely mounted to prevent falling.

First-Time Setup

After installation, configure with your audio system.

Connect to amplifier/receiver: Use appropriate gauge speaker wire (16 AWG recommended).
Set amplifier impedance: Ensure amplifier matches speaker impedance (typically 8 ohms).
Balance audio: Use receiver's speaker balance controls to match other speakers in system.
Test sound: Play audio at moderate volume to verify proper operation.

CAUTION! Do not exceed recommended power input to avoid damage. Ensure all connections are secure.

Specifications

Type: 2-way in-wall loudspeaker.
Woofer: 5.25-inch high-excursion driver.
Tweeter: 1-inch with waveguide.
Frequency Response: 55Hz - 16kHz (±3dB).
Impedance: 8 ohms nominal.
Power Handling: Up to 100 watts RMS.
Sensitivity: 89dB SPL (1 watt/1 meter).
Crossover Frequency: 2.8kHz.
Mounting Depth: 3.25 inches (83mm).
Cutout Dimensions: 7.75 inches x 11.5 inches (197mm x 292mm).
Grille Dimensions: 8.5 inches x 12.25 inches (216mm x 311mm).
Finish: White paintable grille and frame.

Controls and Connections

No external controls; operation is managed through connected audio system.

Terminals: Quick-connect spring-loaded terminals accept bare wire or spade connectors.

Polarity: Ensure positive (+) and negative (-) connections match amplifier terminals for proper phase.

Wire Gauge: Use 16 to 12 AWG for optimal performance.

Connecting to Audio Systems

Compatible with most stereo and home theater receivers.

Turn off amplifier/receiver before making connections.
Run speaker wire from amplifier to speaker location.
Connect wires to speaker terminals (red = positive, black = negative).
Connect opposite ends to corresponding amplifier terminals.
Secure wires to avoid strain on connections.

Tip: For home theater, use identical speakers for left/right channels and matching center channel if possible.

Operation and Performance

Designed for high-fidelity music and movie sound reproduction.

Volume Control: Adjust using amplifier/receiver volume control.
Tone Adjustment: Use amplifier bass/treble controls or room correction if available.
Positioning: For stereo imaging, position speakers at ear level when seated.
Break-in Period: Sound may improve after several hours of use at moderate volume.
Room Acoustics: Room size and furnishings affect sound; experiment with placement if possible.

WARNING! Avoid playing at maximum volume for extended periods to prevent overheating and distortion.

Care & Maintenance

Unplug amplifier before cleaning speakers. Use soft, dry cloth for grille; vacuum gently if dusty.

CAUTION! Do not use liquids, solvents, or abrasive cleaners. Do not remove driver units.

Regulatory Information

FCC Compliance: This device complies with Part 15 of FCC rules. Copyright © Bose Corporation. All rights reserved. Bose and Virtually Invisible are trademarks of Bose Corporation. For support, visit www.bose.com or contact Bose Customer Service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound from speaker	Amplifier off/connections	Ensure amplifier is on; check wire connections at both ends.
Distorted sound	Overdriven/incorrect polarity	Reduce volume; verify positive/negative connections match.
Uneven sound between speakers	Balance settings/wire issues	Check receiver balance; ensure both speakers wired identically.
Buzzing or humming	Ground loop/interference	Check all connections; ensure proper grounding of audio system.
Grille not attaching securely	Misaligned/damaged magnets	Remove and reattach; ensure frame is clean and undamaged.

Service: Do not attempt to repair; contact Bose authorized service center.

Support: 1-800-999-2673; www.bose.com