The JBL Professional 104-BT is a pair of compact powered desktop reference monitors with Bluetooth 5.0 streaming. Each monitor uses a coaxial driver that combines a 4.5-inch woofer with a 0.75-inch soft-dome tweeter. The design is acoustically optimized for desktop placement.
The master monitor holds the electronics for the extension monitor, which keeps wiring and clutter to a minimum. A built-in 60-watt Class D amplifier sends 30 watts to each speaker. The cabinet is molded ABS with a contoured low-frequency port and a metal grille, finished in matte black acrylic paint.
Inputs include Bluetooth, 1/8" aux, RCA and 1/4" TRS balanced. A front-panel input control selects Bluetooth, Aux, RCA, TRS or all inputs combined. The front panel also has a volume control and a headphone jack that mutes the speakers when in use.
- Type
- Active 2-way compact reference monitors, pair
- Color
- Black (matte black acrylic finish)
- Drivers
- 4.5 in (118 mm) woofer, 0.75 in (19 mm) soft-dome tweeter
- Enclosure
- Ported, ABS with metal grille
- Amplifier
- 60 W Class D (30 W per speaker)
- Crossover
- 1725 Hz, 1st order
- Frequency range
- 88 Hz – 20 kHz (-3 dB); 60 Hz – 20 kHz (-10 dB)
- Sensitivity
- 87 dB SPL @ 1 m with -10 dBV aux in (volume = max)
- Max SPL
- 89 dB continuous; 102 dB system peak; 104 dB momentary peak
- Impedance
- 8 Ω rated; 7.8 Ω minimum @ 260 Hz
- Coverage
- 120° x 60° (horizontal x vertical)