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.

• Coaxial 4.5-inch LF driver and 0.75-inch soft-dome HF driver
• Bluetooth 5.0 streaming
• 60-watt Class D power amplifier; 30 watts per speaker
• Optimized for desktop placement
• Molded ABS cabinet with low-frequency port
• Three input sets for professional, personal, and consumer devices
• Host monitor electronics for extension monitor
• Front-panel input selector (Bluetooth, Aux, RCA, TRS, combined)
• Front-panel volume control
• Front-panel headphone jack with speaker mute
• Integrated power supply

LF Driver	4.5 in
HF Driver	0.75 in, soft dome
Crossover Frequency	1725 Hz, 1st order
Input Sensitivity	87 dB / 1 m
Power Amplifier	60 W total (30 W per speaker), Class D
Maximum Continuous SPL	89 dB
Maximum Peak SPL	102 dB
Frequency Response	60 Hz - 20 kHz (±3 dB)
Total Harmonic Distortion	<0.2% @ 1 kHz, 2.83 VRMS; <10% THD at max output with limiter
Signal to Noise Ratio	75 dBA (A-weighted), 70 dBr (unweighted)