JBL Professional 1 Series 104-BT Compact Desktop Reference Monitors with Bluetooth
- Coaxial driver, soft-dome tweeter
- 60 watts, 30 W per speaker, Class D
- Bluetooth 5.0, plus aux, RCA and TRS inputs
- 60 Hz to 20 kHz frequency range (-10 dB)
- Ported enclosure, 1725 Hz crossover
- Sold as a pair, headphone output with auto mute
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A pair of compact powered desktop monitors with a coaxial driver, Bluetooth and several analog inputs, for small desks and reference listening. The low end is modest, so bass-heavy work may need a subwoofer.
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ASIN: B07ZR2G296Category: Studio Monitors
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Overview
A coaxial driver combines the woofer and a soft-dome tweeter in one unit, aimed at a transparent sound and a wide sweet spot. Each speaker is driven by an integrated Class D amplifier, with Bluetooth streaming for reference mixes.
The reason to look at them is the coaxial driver and the mix of inputs, including Bluetooth for checking a mix from a phone. The limitation is the small woofer, whose listed response stops short of deep bass.
Who it's for
Beginners, podcasters and desktop producers working in a tight space will find the input mix enough. Mix engineers who need full-range monitoring should add a subwoofer or look at larger monitors.
Pros and cons
- Coaxial driver for a wide sweet spot
- Bluetooth 5.0 streaming
- Aux, RCA and TRS inputs
- Headphone output with auto speaker mute
- Small woofer limits deep bass
- Cabinet size and weight absent from the listing
Performance notes
A coaxial layout puts both drivers on one axis, which widens the listening area and holds the tone even as the listener shifts position. The ported enclosure extends the low frequencies somewhat, and its tuning is set by the port. The amplifier rating caps how loud the pair can play before distortion rises.
Specifications
| Brand | JBL |
|---|---|
| Dimensions & fit | |
| Woofer | 4.5 inch (118 mm), coaxial |
| Tweeter | 0.75 inch (19 mm) soft dome |
| Capacity & performance | |
| Headphone output | 1/8 inch stereo, auto speaker mute |
| Frequency range | 60 Hz to 20 kHz (-10 dB); 88 Hz to 20 kHz (-3 dB) |
| Power & efficiency | |
| Amplifier | 60 W total, 30 W per speaker, Class D |
| Construction & materials | |
| Color | Black |
| Other details | |
| Inputs | Bluetooth, aux, RCA, TRS |
| Bluetooth version | 5.0 |
| Enclosure | Ported |
| Crossover | 1725 Hz, 1st order |
| Sensitivity | 87 dB SPL at 1 m |
| Maximum continuous SPL | 89 dB |
| Coverage (H x V) | 120 x 60 |
| AC input | 100 to 240 VAC, 50/60 Hz |
Frequently asked questions
How big are the JBL 104-BT monitors?
The listing gives driver sizes, a 4.5 inch woofer and a 0.75 inch tweeter, but no cabinet dimensions or weight.
Can the JBL 104-BT play from a phone?
Yes. It has Bluetooth 5.0 streaming, which the maker pitches for reference mixes.
Are the JBL 104-BT monitors sold singly?
The title says sold as pair, and the amplifier rating is given per speaker.
Can I plug headphones into the JBL 104-BT?
Yes. A 1/8 inch stereo headphone output is listed, with auto speaker mute.