Short answer: both reach deep bass and both run bright, so pick on the peak that bothers you. The JBL Studio 590 has pretty deep bass but a 3dB peak at 1.7kHz plus about a 4dB peak from 8k to 13k, so it will be bright up top. The Polk T50 at $498 gives pretty deep bass for the price with a 5dB peak at 1kHz and a 4dB bright top end from 11kHz on up.
Buy the Polk T50. It is rated higher for sound quality; the JBL Studio 590 is no longer sold new.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Polk T50 | JBL Studio 590 | |
|---|---|---|
| Price | $498 per pair | $2,000 per pair Discontinued |
| Ranked | #54 of 74 in Large Size Floorstanding Speakers | #69 of 74 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) | 32Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 47Hz (measured, Audio Science Review) | 48Hz (measured, Audio Science Review) |
| Impedance | 4 ohms nominal (4.2 ohms minimum, measured by Audio Science Review) | 6 ohms nominal (5 ohms measured minimum, Audio Science Review) |
| Drivers | 2x 6.5” bi-laminate paper cone woofers, 1x 1” Terylene dome tweeter + 2x 8” passive bass radiators | 2x 8” (200mm) PolyPlas cone woofers, 1x 1” (25mm) Teonex dome tweeter on Bi-Radial horn (2.5-way) |
| Weight | 75.4 lbs (34.2 kg) | 107.8 lbs (48.9 kg) |
| Sensitivity | 86.3dB (2.83V/1m, measured by Audio Science Review) | 90.3dB (2.83V/1m, measured by Audio Science Review) |
| Dimensions | 40.4”H x 9.3”W x 12.5”D (1026.2 x 235.0 x 317.5 mm) | 49.7”H x 12.7”W x 16.3”D (1263.0 x 322.0 x 413.0 mm) |
| Woofer Cabinet | passive radiator | ported, rear |
| Spinorama Preference Score | 4.14 | 4.49 |
| Spinorama Preference Score with Perfect Sub | 6.15 | 6.22 |
| DIY Kit | No | No |
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Prices on this page were last checked October 2, 2026 at 10:18 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
Polk T50: $498 per pair Amazon eBay
Pros: Pretty deep bass for the price. Distortion at 86dB SPL/1m is reasonably controlled outside a narrow spike around 250Hz. The reviewer notes performance is “not too bad for a budget speaker” once the two main tonal issues are addressed with EQ. Measured bass extension of 47Hz (-3dB), with a measured sensitivity of 86.3dB.
Cons: 5dB peak at 1kHz, 4dB bright top end from 11kHz on up. Just okay vertical off axis. Impedance and phase show several resonances between 200Hz-1kHz, with a minimum impedance of 4.2 ohms. Distortion rises substantially at 96dB SPL/1m across the midrange, with repeated peaks between 100Hz-2kHz.
Full Polk T50 review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 47Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 40.4”H x 9.3”W x 12.5”D (1026.2 x 235.0 x 317.5 mm) |
| Drivers | 2x 6.5” bi-laminate paper cone woofers, 1x 1” Terylene dome tweeter + 2x 8” passive bass radiators |
| Impedance | 4 ohms nominal (4.2 ohms minimum, measured by Audio Science Review) |
| Sensitivity | 86.3dB (2.83V/1m, measured by Audio Science Review) |
| Spinorama Preference Score | 4.14 |
| Spinorama Preference Score with Perfect Sub | 6.15 |
| Weight | 75.4 lbs (34.2 kg) |
| Woofer Cabinet | passive radiator |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
JBL Studio 590: $2,000 per pair Discontinued eBay
Newer model: the JBL Studio 698, ranked higher, rated 4.3/5.
Pros: Pretty deep bass. CEA2034 spinorama is flat on-axis at a high level, with high sensitivity around 89-90dB. Predicted in-room response is good aside from a dip between 800Hz-1.5kHz. Distortion at 86dB SPL/1m is good outside of the 8.5kHz resonance. Measured bass extension of 48Hz (-3dB), with a measured sensitivity of 90.3dB.
Cons: 3dB peak at 1.7kHz, about a 4dB peak from 8k to 13k, going to be bright up top. Just okay vertical off axis. Really bad resonance at 8.5kHz, which shows up as a sharp distortion spike at both 86dB and 96dB SPL/1m. Cumulative spectral decay (waterfall) reveals many fine resonances across the midrange and treble. At 96dB SPL/1m the midrange and treble get notably messier, with broad distortion elevation from 2-8kHz. Discontinued.
Full JBL Studio 590 review and specifications →
| Bass Extension (-10dB) | 32Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 48Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 49.7”H x 12.7”W x 16.3”D (1263.0 x 322.0 x 413.0 mm) |
| Drivers | 2x 8” (200mm) PolyPlas cone woofers, 1x 1” (25mm) Teonex dome tweeter on Bi-Radial horn (2.5-way) |
| Impedance | 6 ohms nominal (5 ohms measured minimum, Audio Science Review) |
| Sensitivity | 90.3dB (2.83V/1m, measured by Audio Science Review) |
| Spinorama Preference Score | 4.49 |
| Spinorama Preference Score with Perfect Sub | 6.22 |
| Weight | 107.8 lbs (48.9 kg) |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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