Short answer: the Fluid Audio FX50 V2, if you are buying new, though neither ranks well in its class. The Fluid Audio FX50 ranks higher than it (#76 vs #77 of 81 powered bookshelf speakers, 2.8/5 vs 2.7/5) but is discontinued, so only consider it used; the Fluid Audio FX50 V2 is still sold new at $298. Both are rated below 3.0/5 among the 81 powered bookshelf speakers, and the JBL 305P MKII, ranked #14 at $289, is a better place to start if sound quality matters.
What the Fluid Audio FX50 does well: A coaxial monitor with a 1” soft dome tweeter at the center of a 5” paper woofer and 90W of bi-amplified class D power, plus XLR, TRS and RCA inputs. Watch for: On-axis response is uneven (1.02dB average deviation) and the listening window spans 5.2dB from 300Hz to 5kHz, for a preference score of 2.15.
What the Fluid Audio FX50 V2 does well: The coaxial geometry and mounting provisions allow flexible physical orientation, while balanced inputs and boundary controls suit a compact studio installation. The catch: Scores of 1.80 standalone and 4.42 with an ideal subwoofer indicate poor native tonal accuracy.
Buy the Fluid Audio FX50 V2 new; the Fluid Audio FX50 is no longer sold new, so it only makes sense as a used find.
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Specifications Side By Side
| Fluid Audio FX50 | Fluid Audio FX50 V2 | |
|---|---|---|
| Price | $298 per pair Discontinued | $298 per pair |
| Ranked | #76 of 81 in Medium Size Powered Bookshelf Speakers | #77 of 81 in Medium Size Powered Bookshelf Speakers |
| XLR Input | Yes | Yes |
| RCA Input | Yes | Yes |
| TRS Input | Yes | Yes |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | No |
| Bluetooth | No | No |
| Drivers | 5” paper woofer with coaxial 1” soft dome tweeter | 1-inch silk tweeter coaxially mounted in 5-inch paper woofer |
| Amplifier Power | 90W (50W LF + 40W HF), class D | 90W each |
| Frequency Response | 49Hz-22kHz (manufacturer specified) | 49Hz-22kHz +/-2dB |
| Dimensions | 9.2”H x 6.9”W x 9.1”D (234 x 175 x 231 mm) | 9.2H x 6.9W x 9.1D in |
| Weight | 8.4 lbs (3.8 kg) each | 8.4 lbs (3.8 kg) each |
| Bass Extension (-3dB) | 60.1Hz (measured, Audio Science Review) | - |
| Bass Extension (-10dB) | about 49.3Hz (measured, Audio Science Review) | - |
| Spinorama Preference Score | 2.15 | 1.80 |
| Spinorama Preference Score with Perfect Sub | 4.61 | 4.42 |
| DIY Kit | No | - |
| Enclosure | - | Active coaxial, front-ported |
| Maximum SPL | - | 110dB |
| Inputs | - | XLR/TRS and RCA |
Related Speaker Comparisons
How Fluid Audio FX50 compares with other leading options:
- JBL 305P MKII vs Fluid Audio FX50 V2
- KRK Classic 5 vs Fluid Audio FX50 V2
- Kali LP-UNF vs Fluid Audio FX50 V2
- Fluid Audio FX50 V2 vs Edifier R1700BT
- Fluid Audio FX50 V2 vs Presonus Eris E5
Prices on this page were last checked October 5, 2026 at 10:21 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Fluid Audio FX50: $298 per pair Discontinued eBay
Newer model: the Fluid Audio FX50 V2, ranked lower, rated 2.7/5.
Pros: A coaxial monitor with a 1” soft dome tweeter at the center of a 5” paper woofer and 90W of bi-amplified class D power, plus XLR, TRS and RCA inputs. Audio Science Review measured bass to 60.1Hz (-3dB). Measured bass extension of 60.1Hz (-3dB).
Cons: On-axis response is uneven (1.02dB average deviation) and the listening window spans 5.2dB from 300Hz to 5kHz, for a preference score of 2.15. Replaced by the FX50 V2. Discontinued.
Full Fluid Audio FX50 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 90W (50W LF + 40W HF), class D |
| Aux Input | No |
| Bass Extension (-10dB) | about 49.3Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 60.1Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| DIY Kit | No |
| Dimensions | 9.2”H x 6.9”W x 9.1”D (234 x 175 x 231 mm) |
| Drivers | 5” paper woofer with coaxial 1” soft dome tweeter |
| Frequency Response | 49Hz-22kHz (manufacturer specified) |
| HDMI Input | No |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 2.15 |
| Spinorama Preference Score with Perfect Sub | 4.61 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 8.4 lbs (3.8 kg) each |
| XLR Input | Yes |
- Reviews, Comparisons and Sound Samples
Fluid Audio FX50 V2: $298 per pair Fluid Audio eBay
Older model: the Fluid Audio FX50 (ranked higher, rated 2.8/5).
Pros: The coaxial geometry and mounting provisions allow flexible physical orientation, while balanced inputs and boundary controls suit a compact studio installation. Bass reaches -3dB around 67Hz in ASR’s selected measurement.
Cons: Scores of 1.80 standalone and 4.42 with an ideal subwoofer indicate poor native tonal accuracy. Listening-window and predicted-room narrow-band deviations are both around 0.80, showing irregular sound for both the listener and room reflections. Coaxial construction does not guarantee smooth dispersion or neutral reproduction, and correction features should not be credited as a proven fix.
Full Fluid Audio FX50 V2 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 90W each |
| Aux Input | No |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 9.2H x 6.9W x 9.1D in |
| Drivers | 1-inch silk tweeter coaxially mounted in 5-inch paper woofer |
| Enclosure | Active coaxial, front-ported |
| Frequency Response | 49Hz-22kHz +/-2dB |
| HDMI Input | No |
| Inputs | XLR/TRS and RCA |
| Maximum SPL | 110dB |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 1.80 |
| Spinorama Preference Score with Perfect Sub | 4.42 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 8.4 lbs (3.8 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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