The JBL 104-BT are compact reference monitors featuring a 4.5-inch (118 mm) coaxial low-frequency driver combined with a 0.75-inch (19 mm) soft-dome tweeter. They include an integrated 60-watt amplifier and utilize an acoustic design intended to deliver precise sound reproduction with detailed imaging. The monitors support Bluetooth streaming for wireless audio input in addition to wired connections.

• 4.5-inch coaxial LF driver and 0.75-inch soft-dome HF driver
• Bluetooth 5.0 streaming
• Integrated 60-watt Class D power amplifier
• Acoustically optimized for desktop placement
• Molded ABS cabinet with contoured low-frequency port
• Three input sets for professional, personal, and consumer devices
• Host monitor electronics for extension monitor
• Front-panel input selector for Bluetooth, Aux, RCA, TRS or combined inputs
• Front-panel volume control
• Front-panel headphone jack with speaker mute
• Integrated power supply

LF Driver	4.5 in (118 mm)
HF Driver	0.75 in (19 mm), soft dome
Crossover	1725 Hz, 1st order
Input Sensitivity	87 dB / 1 m
Power Amp	60 W (30 W each speaker), Class D
Maximum Continuous SPL	89 dB
Maximum Peak SPL	102 dB
Frequency Response (±3 dB)	60 Hz - 20 kHz
Signal to Noise Ratio	75 dBA (A-Weighted), 70 dBr (unweighted)
Coverage Angle	120º x 60º
Enclosure Type	Ported
Enclosure Material	ABS with metal baffle
Enclosure Finish	Matte black acrylic paint
Audio Output Connectors	1 x 3.5 mm stereo headphone with auto speaker mute
Input Connectors	2 x 1/4-inch balanced (+4 dBu); 2 x RCA (-10 dBV); 1 x 1/8-inch unbalanced (-10 dBV)
AC Input Voltage	100 – 240 VAC (± 10%), 50/60 Hz
Current Draw	85 W