Short answer: the Polk Audio XT15. It ranks #52 of 160 bookshelf speakers by sound quality (rated 3.7/5) at $149 and is still sold new; the JBL Stage A120 ranks #129 (rated 2.5/5) and is discontinued, so it is only an option used. The JBL Stage A120’s replacement, the JBL Stage 2 240B, is rated 2.7/5.
Why pick the JBL Stage A120: Comes with a port bung, letting you experiment between ported and sealed configurations: the reviewer found the sound improved somewhat with the port sealed. Watch for: A pronounced “Batman”-shaped frequency response: boosted bass, a scooped midrange, and elevated treble (about 3-4dB above the midrange), driven partly by confirmed cabinet panel resonance around 800Hz-1.7kHz.
The Polk Audio XT15 is the more accurate choice. Very low $149/pair entry price for a Hi-Res Audio Certified 2-way design that’s Dolby Atmos and DTS:X compatible, and works with either 4- or 8-ohm amplifier outputs so it drops into almost any AVR without matching concerns. Its measured preference score, a predictor of how neutral it sounds, is 4.56 against 3.50 for the JBL Stage A120. The tradeoff: Bass rolls off early, at 77.6Hz (-3dB) and 54.2Hz (-10dB).
Buy the Polk Audio XT15. It is rated higher for sound quality and still sold new, while the JBL Stage A120 is discontinued.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| JBL Stage A120 | Polk Audio XT15 | |
|---|---|---|
| Price | $299 per pair Discontinued | $149.00 per pair |
| Ranked | #129 of 160 in Medium Size Bookshelf Speakers | #52 of 160 in Medium Size Bookshelf Speakers |
| Drivers | 0.75” tweeter + 5” woofer | 1” Terylene dome tweeter, 5.25” bi-laminate paper woofer |
| Weight | 10.6 lbs (4.8 kg) | 9 lbs (4.08 kg) each |
| Woofer Cabinet | ported | Ported |
| Sensitivity | 83dB (measured, Erin’s Audio Corner) | 86dB (1W/1m) |
| Impedance | 6 ohms | 4/8-ohm compatible |
| Dimensions | 11.3”H x 6.8”W x 7.4”D (285.8 x 171.5 x 188.9 mm) | 16.51 x 18.24cm (6.5 x 7.18 in), 4.08kg (9 lb) each |
| Bass Extension (-3dB) | 71Hz (measured, Erin’s Audio Corner) | 77.6Hz (measured, spinorama.org) |
| Bass Extension (-10dB) | 53Hz (measured, Erin’s Audio Corner) | 54.2Hz (measured, spinorama.org) |
| Spinorama Preference Score | 3.50 | 4.56 |
| Spinorama Preference Score with Perfect Sub | 6.24 | 7.31 |
| DIY Kit | No | No |
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Prices on this page were last checked October 7, 2026 at 9:25 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
JBL Stage A120: $299 per pair Discontinued eBay
Newer model: the JBL Stage 2 240B, ranked higher, estimated 2.7/5.
Same family: the JBL Stage A130 (larger bookshelf, ranked lower, rated 2.1/5), the JBL Stage A180 (floorstanding, rated 3.8/5), the JBL Stage A125C (smaller center, rated 3.4/5) and the JBL Stage A135C (larger center, rated 2.9/5).
Pros: Comes with a port bung, letting you experiment between ported and sealed configurations: the reviewer found the sound improved somewhat with the port sealed. Distortion at 96dB is broadly comparable to competitors in this price range outside of some elevated low-end THD. Wide horizontal radiation pattern for a compact bookshelf speaker in the low-to-midrange. Measured bass extension of 71Hz (-3dB), with a measured sensitivity of 83dB.
Cons: A pronounced “Batman”-shaped frequency response: boosted bass, a scooped midrange, and elevated treble (about 3-4dB above the midrange), driven partly by confirmed cabinet panel resonance around 800Hz-1.7kHz. Directivity shows significant back-to-back peaks and dips, making the speaker harder to correct with EQ since the off-axis sound doesn’t track the direct sound cleanly. Elevated treble that some might call “detailed” reads as an unwelcome boost to the reviewer rather than genuine resolution. Compression testing shows the low end degrading substantially at high output (102dB). Overall considered one of the weaker speakers the reviewer has tested in this class, with a competing model (Emotiva Airmotiv B1+) recommended instead at a similar price. Discontinued.
Full JBL Stage A120 review and specifications →
| Bass Extension (-10dB) | 53Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 71Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 11.3”H x 6.8”W x 7.4”D (285.8 x 171.5 x 188.9 mm) |
| Drivers | 0.75” tweeter + 5” woofer |
| Impedance | 6 ohms |
| Sensitivity | 83dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 3.50 |
| Spinorama Preference Score with Perfect Sub | 6.24 |
| Weight | 10.6 lbs (4.8 kg) |
| Woofer Cabinet | ported |
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Polk Audio XT15: $149.00 per pair Amazon B&H Photo Video Crutchfield eBay
Same family: the Polk Monitor XT20 (larger bookshelf, rated 3.4/5), the Polk Audio XT60 (smaller floorstanding, rated 3.5/5), the Polk Audio XT70 (larger floorstanding, rated 3.6/5), the Polk Audio XT30 (smaller center, rated 3.6/5), the Polk Audio XT35 (larger center, rated 4.1/5), the Polk Audio Monitor XT10 (smaller subwoofer, estimated 3.1/5) and the Polk Audio Monitor XT12 (larger subwoofer, estimated 3.3/5).
Pros: Very low $149/pair entry price for a Hi-Res Audio Certified 2-way design that’s Dolby Atmos and DTS:X compatible, and works with either 4- or 8-ohm amplifier outputs so it drops into almost any AVR without matching concerns. Off axis sound tracks the on axis response reasonably consistently for the price. Measured bass extension of 77.6Hz (-3dB).
Cons: Bass rolls off early, at 77.6Hz (-3dB) and 54.2Hz (-10dB). On-axis response is relatively uneven, with an average deviation of about 0.45dB, and its listening window is less smooth than pricier speakers. Modest 86dB sensitivity wants a reasonably powered amp channel. The 5.25” bi-laminate paper woofer is Polk’s entry-tier driver, not the polypropylene/Turbine cones used in its pricier Signature Elite/Reserve lines.
Full Polk Audio XT15 review and specifications →
| Bass Extension (-10dB) | 54.2Hz (measured, spinorama.org) |
|---|---|
| Bass Extension (-3dB) | 77.6Hz (measured, spinorama.org) |
| DIY Kit | No |
| Dimensions | 16.51 x 18.24cm (6.5 x 7.18 in), 4.08kg (9 lb) each |
| Drivers | 1” Terylene dome tweeter, 5.25” bi-laminate paper woofer |
| Impedance | 4/8-ohm compatible |
| Sensitivity | 86dB (1W/1m) |
| Spinorama Preference Score | 4.56 |
| Spinorama Preference Score with Perfect Sub | 7.31 |
| Weight | 9 lbs (4.08 kg) each |
| Woofer Cabinet | Ported |
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