JBL Professional 1 Series 104-BT Compact Desktop Reference Monitors with Bluetooth User Manual

1. Introduction

This manual provides essential information for the setup, operation, and maintenance of your JBL Professional 1 Series 104-BT Compact Desktop Reference Monitors. These monitors are designed to deliver accurate and clear sound reproduction for various audio applications, including music production, podcasting, and general listening. Please read this manual thoroughly before using the product to ensure proper functionality and longevity.

2. Safety Information

• Power Source: Connect the monitors only to the specified power supply as indicated on the unit.
• Ventilation: Ensure adequate ventilation around the monitors. Do not block ventilation openings.
• Moisture: Do not expose the monitors to rain, moisture, or excessive humidity.
• Heat: Keep the monitors away from heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.
• Cleaning: Disconnect power before cleaning. Use a dry cloth for cleaning.
• Servicing: Refer all servicing to qualified service personnel. Do not attempt to service this product yourself.
• Placement: Place the monitors on a stable, level surface to prevent tipping.
• Hearing Protection: Prolonged exposure to high volume levels can cause permanent hearing damage. Use a comfortable listening level.

3. Package Contents

Verify that all items listed below are included in your package:

• JBL 104-BT Reference Monitors (Pair)
• 1x Extension Monitor Speaker Wire (2-Conductor, 2 meters)
• 1x 3.5 mm to RCA Audio Cable
• 1x Power Cord
• 1x Quick Setup Guide

4. Product Overview

4.1. Front Panel (Active Speaker)

The image above displays the front panel of the active JBL 104-BT monitor. Key controls and inputs are located here for easy access:

• Volume Control: Rotary knob to adjust the overall output volume.
• Input Select Button: Cycles through available input sources (Bluetooth, AUX, RCA, TRS, ALL).
• Input Indicators: LEDs to show the currently selected input source.
• Bluetooth Pairing Button/Indicator: Initiates Bluetooth pairing and indicates connection status.
• Headphone Jack (3.5mm): Connect headphones; automatically mutes the speakers when in use.
• AUX IN (3.5mm): Auxiliary input for connecting external audio devices.

4.2. Rear Panel (Active Speaker)

The image above illustrates the rear panel of the active JBL 104-BT monitor, featuring various connectivity options:

• TRS Inputs (Left/Right): Balanced 1/4-inch inputs for professional audio equipment.
• RCA Inputs (Left/Right): Unbalanced RCA inputs for consumer audio devices.
• Extension Monitor Output: Connects to the passive speaker using the supplied speaker wire.
• Power Input: Connects the power cord to the main power supply.
• Power Switch: Turns the monitor system on or off.

5. Setup

5.1. Placement

For optimal stereo imaging and sound accuracy, position the monitors to form an equilateral triangle with your listening position. The tweeters should ideally be at ear level. Ensure there is sufficient space behind the monitors for proper airflow and cable management. The compact design allows for placement on most desktops or studio workstations.

5.2. Connecting the Speakers

1. Identify the active speaker (with controls and power input) and the passive speaker.
2. Use the supplied 2-conductor speaker wire to connect the "Extension Monitor Output" on the active speaker to the input terminals on the passive speaker. Ensure correct polarity (red to red, black to black).

5.3. Power Connection

1. Ensure the power switch on the rear of the active speaker is in the OFF position.
2. Connect the supplied power cord to the power input on the active speaker.
3. Plug the other end of the power cord into a suitable AC power outlet.

6. Operating

6.1. Power On/Off

To power on the monitors, flip the power switch on the rear of the active speaker to the ON position. An audible chime will indicate the system is powering up. To power off, flip the switch to the OFF position.

6.2. Input Selection

Press the "Input Select" button on the front panel of the active speaker to cycle through the available input sources: Bluetooth, AUX, RCA, TRS, or ALL (combines all wired inputs). The corresponding LED indicator will illuminate to show the active input.

6.3. Bluetooth Pairing

1. Select Bluetooth as the input source using the "Input Select" button. The Bluetooth indicator will flash.
2. On your Bluetooth-enabled device, search for "JBL 104-BT" in the list of available devices.
3. Select "JBL 104-BT" to pair. Once connected, the Bluetooth indicator will glow solid blue.
4. If pairing fails, ensure no other device is connected and try again.

6.4. Wired Connections

Connect your audio source to the desired input on the active speaker's rear panel (TRS or RCA) or front panel (AUX IN). Select the corresponding input using the "Input Select" button. If using multiple wired inputs simultaneously, select "ALL" mode.

6.5. Headphone Use

Plug your headphones into the 3.5mm headphone jack on the front panel. This action will automatically mute the main speakers, allowing for private listening.

7. Maintenance

• Cleaning: Use a soft, dry cloth to wipe the exterior surfaces of the monitors. Do not use abrasive cleaners, waxes, or solvents.
• Dust: Regularly dust the speaker grilles and vents to prevent accumulation that could affect performance.
• Storage: If storing the monitors for an extended period, ensure they are powered off, disconnected from the power source, and stored in a cool, dry place.

8. Troubleshooting

9. Specifications

The image above provides the physical dimensions of the JBL 104-BT monitor for reference.

10. Warranty and Support

JBL Professional 1 Series 104-BT monitors come with a Limited Warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official JBL Professional website. For technical support, service, or replacement parts, please contact JBL Professional customer service or your authorized dealer.