1. Introduction
The Bose Virtually Invisible 191 speakers are designed for flush-mount installation in walls or ceilings, providing high-quality audio performance while blending seamlessly into your living space. This manual provides essential information for the safe and correct installation, operation, and maintenance of your speakers.
2. Safety Guidelines
- Read all instructions before installing or using the speakers.
- Retain these instructions for future reference.
- Heed all warnings on the product and in the instructions.
- Follow all instructions.
- Do not use this apparatus near water.
- Clean only with a dry cloth.
- Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
- Ensure proper wiring connections to avoid electrical hazards. If unsure, consult a qualified electrician.
3. Package Contents
Verify that all components are present in the package:
- 2 Speakers (with rectangular frames attached)
- 2 Rectangular speaker grilles
- 2 Round speaker frames
- Template
- Rectangular paint shield
- Round paint shield
- 2 Round speaker grilles
4. Installation
Proper installation is crucial for optimal performance and safety. If you are not comfortable with electrical wiring or cutting into walls/ceilings, consult a professional installer.
4.1 Pre-installation Considerations
- Location: Choose a location free of obstructions (e.g., electrical wires, plumbing, HVAC ducts, studs/joists). Use a stud finder to locate framing members.
- Wall/Ceiling Depth: Ensure sufficient depth for the speaker enclosure. The speakers require at least a 2x4 wall structure.
- Wiring: Run appropriate speaker wire (e.g., 16-gauge or 14-gauge, depending on cable length) from your amplifier/receiver to the chosen speaker locations. Leave enough slack for connections.
4.2 Cutting the Opening
- Position the provided template on the wall or ceiling at your desired speaker location. Ensure it is level.
- Trace around the template with a pencil.
- Carefully cut along the traced line using a drywall saw or utility knife. Exercise caution to avoid damaging existing wiring or pipes behind the surface.
4.3 Mounting the Speakers
- Feed the speaker wire through the opening.
- Connect the speaker wires to the terminals on the back of the speaker. Ensure correct polarity (+ to + and - to -).
- Insert the speaker assembly into the cut opening. The mounting clamps will automatically rotate into position.
- Tighten the mounting screws on the front of the speaker. This will secure the clamps against the back of the wall/ceiling. Do not overtighten.
4.4 Attaching Grilles
The Bose 191 speakers come with both rectangular and round grilles. Choose the grille that best suits your aesthetic preference.
- Align the chosen grille with the speaker frame.
- Gently press the grille into place until it is flush with the wall or ceiling surface. The grilles are paintable to match your room decor. Use the provided paint shields if painting.
5. Connecting to Your Audio System
Once installed, connect the speaker wires from your in-wall/in-ceiling speakers to your amplifier or receiver.
- Ensure your amplifier/receiver is turned off before making any connections.
- Connect the positive (+) terminal of the speaker wire to the positive (+) speaker output terminal on your amplifier/receiver.
- Connect the negative (-) terminal of the speaker wire to the negative (-) speaker output terminal on your amplifier/receiver.
- Double-check all connections for correct polarity to ensure proper sound reproduction.
6. Care and Maintenance
The Bose Virtually Invisible 191 speakers require minimal maintenance.
- Cleaning: Use a soft, dry cloth to gently wipe the grilles and speaker frames. Do not use abrasive cleaners, solvents, or harsh chemicals.
- Painting Grilles: If you choose to paint the grilles, use a thin coat of spray paint. Avoid clogging the grille perforations, as this can affect sound quality.
- Environmental Conditions: Avoid exposing the speakers to excessive moisture or extreme temperatures.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from speakers | Incorrect wiring connections Amplifier/receiver off or incorrect input selected Speaker wire damage | Check speaker wire polarity and connections at both speaker and amplifier. Ensure amplifier/receiver is on and correct input is selected. Inspect speaker wires for cuts or breaks. |
| Distorted sound | Overdriven amplifier Loose speaker connections Damaged speaker | Reduce volume on amplifier/receiver. Check and tighten all speaker wire connections. Contact customer support if distortion persists at normal listening levels. |
| Poor bass response | Incorrect amplifier settings Room acoustics | Adjust bass settings on your amplifier/receiver. Ensure any subwoofer is properly integrated. Consider room treatment or speaker placement adjustments if possible. |
| Grille does not sit flush | Obstruction Improper installation | Check for any debris or paint buildup preventing the grille from seating properly. Ensure speaker mounting screws are evenly tightened. |
8. Technical Specifications
- Model Name: Virtually Invisible 191
- Speaker Type: In-Wall/In-Ceiling
- Speaker Size: 2.5 Inches (Woofer Diameter)
- Speaker Maximum Output Power: 100 Watts
- Connectivity Technology: Wired
- Audio Output Mode: Stereo, Surround
- Mounting Type: Ceiling Mount, Wall Mount
- Product Dimensions: 17.6 x 12 x 15.1 inches
- Item Weight: 13.66 pounds (6.21 Kilograms)
- Color: White
- Manufacturer: BOSE
- Item Model Number: 31509
9. Warranty and Customer Support
Your Bose Virtually Invisible 191 Speakers are covered by a limited warranty provided by the manufacturer. Please refer to the warranty documentation included with your purchase for specific terms and conditions.
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Bose customer support through their official website or the contact information provided in your product documentation.
