JBL One Series 104 Specifications and Review

Last updated: August 18, 2026

The JBL One Series 104 ranks #40 out of 42 total Medium Size Powered Bookshelf Speakers for sound quality. See Top Recommended Speakers By Attribute for all the top speaker suggestions.

Brand: JBL

#40 JBL One Series 104: $129 Amazon

Pros: Heavy internal EQ from the amplifier meaningfully compensates for otherwise poor raw driver measurements, and casual listening on undemanding content sounded like a scaled-down JBL 305P Mark II - well above typical computer-speaker quality for the price. Solid build quality for a $90-130 powered pair with dual built-in amplifiers.

Cons: Measuring the passive drivers alone (bypassing the amplifier’s EQ) showed “no bass, no low mids, and highly irregular highs” - a disaster by the reviewer’s description. Even with the amplifier’s correction applied, there’s an on-axis cancellation around 7.4kHz from the coaxial driver design, and JBL’s own published frequency-response graph uses a compressed 95dB vertical scale that hides real deviations the reviewer’s 50dB-scale CEA-2034 measurement reveals. Female vocals and “lisping” content became bright and annoying; the reviewer’s verdict was “can’t recommend it though if you want a true hi-fi experience.”

How it compares: Just above it: Neumi BS5P - $21 more. Just below it: Donner Dyna 3 - $40 cheaper.

AppNo
Bass Extension (-10dB)35Hz with the amplifier's DSP bass boost active (measured, Audio Science Review)
Bass Extension (-3dB)45Hz with the amplifier's DSP bass boost active (measured, Audio Science Review)
DSPYes
Dimensions9.7H x 6W x 4.9D in (per manufacturer, 104-BT)
Drivers4.5" coaxial low-frequency driver, 0.75" soft dome tweeter
EQYes (fixed, amplifier-applied)
Frequency Response60Hz - 20kHz (Manufacturer specified)
Output Power60W total Class D (30W per speaker)
Weight4.5 lbs / 2.06 kg (master), 3.8 lbs / 1.73 kg (slave)

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