Short answer: the Polk Audio XT60 for a budget tower that reaches low, the Definitive Technology BP-9020 for powered sub-bass. Its 8-inch side-firing subwoofer and 150-watt Class D amp reach F3 35Hz and F10 29Hz but boost the treble into brightness and sibilance. The XT60 uses a 6.5-inch woofer with two 6.5-inch passive radiators to hit 43.9Hz at -3dB and 38.1Hz at -10dB, though its bass alignment Q is the least controlled here.
Buy the Polk Audio XT60 if you want one new; the Definitive Technology BP-9020 is discontinued, so only look for it used.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Definitive Technology BP-9020 | Polk Audio XT60 | |
|---|---|---|
| Price | $500 per pair Discontinued | $458 per pair |
| Ranked | #52 of 74 in Large Size Floorstanding Speakers | #59 of 74 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 29Hz (measured, Erin’s Audio Corner) | 38.1Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 35Hz (measured, Erin’s Audio Corner) | 43.9Hz (measured, spinorama.org) |
| Dimensions | 35.3”H x 11”W x 13”D (895.4 x 279.4 x 330.2 mm) | 19.05 x 92.5 x 23.09cm (7.5 x 36.4 x 9.09 in) each |
| Impedance | 8 ohms nominal | 4/8-ohm compatible |
| Sensitivity | 87.7dB (measured average, Erin’s Audio Corner) | 86dB (1W/1m) |
| Drivers | 1 in. annealed aluminum dome tweeter, two 3.5 in. BDSS midrange (front), one 3.5 in. BDSS midrange (rear), 8 in. powered subwoofer | 1” Terylene dome tweeter, 6.5” bilaminate polypropylene woofer, 2x 6.5” passive radiators |
| Weight | 30 lbs (13.6 kg) each | 20 lbs (9.07 kg) each |
| Woofer Cabinet | ported, slot | Passive radiator-loaded |
| Spinorama Preference Score | 5.08 | 5.19 |
| Spinorama Preference Score with Perfect Sub | 6.53 | 7.13 |
| DIY Kit | No | No |
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The Two Speakers In Full
Definitive Technology BP-9020: $500 per pair Discontinued eBay
Pros: Integrated powered 8” side-firing subwoofer with a 150-watt Class D amplifier provides exceptional sub-bass extension down to an F3 of 35Hz and F10 of 29Hz without requiring a standalone subwoofer enclosure. Forward-Focused Bipolar Array technology (dual 3.5” front midrange drivers + 1” annealed aluminum dome tweeter, plus a 3.5” rear-firing midrange driver) creates a remarkably wide, spacious soundstage with broad room envelopment. On-axis frequency response stays smooth and relatively neutral when listened to directly aligned with the tweeter. Measured average sensitivity of 87.7dB SPL (2.83V/1m) allows comfortable drive from standard multi-channel receivers. Measured bass extension of 35Hz (-3dB), with a measured sensitivity of 87.7dB.
Cons: Significant high-frequency boost creates notable treble brightness and noticeable sibilance on vocal s-sounds. Bipolar rear driver radiation creates a diffuse soundstage that compromises razor-sharp imaging focus and pinpoint instrument placement. DSP-based internal limiter aggressively compresses output below 80Hz at higher listening levels, causing lower mid-bass and sub-bass impact to diminish as volume increases. Midrange clarity shows slight ‘cuppiness’ and upper-frequency directivity irregularities due to front/rear driver interaction. Discontinued.
Full Definitive Technology BP-9020 review and specifications →
| Bass Extension (-10dB) | 29Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 35Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 35.3”H x 11”W x 13”D (895.4 x 279.4 x 330.2 mm) |
| Drivers | 1 in. annealed aluminum dome tweeter, two 3.5 in. BDSS midrange (front), one 3.5 in. BDSS midrange (rear), 8 in. powered subwoofer |
| Impedance | 8 ohms nominal |
| Sensitivity | 87.7dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.08 |
| Spinorama Preference Score with Perfect Sub | 6.53 |
| Weight | 30 lbs (13.6 kg) each |
| Woofer Cabinet | ported, slot |
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Polk Audio XT60: $458 per pair Amazon B&H Photo Video Crutchfield eBay
Pros: Passive-radiator-loaded design (6.5” woofer plus two 6.5” passive radiators) gives deeper bass than the driver size alone would suggest: 43.9Hz at -3dB / 38.1Hz at -10dB, genuinely competitive extension for a budget tower. Hi-Res Audio certified, Dolby Atmos/DTS:X compatible, and works with either 4- or 8-ohm amplifier outputs. Measured bass extension of 43.9Hz (-3dB).
Cons: Bass alignment Q (lfq 0.96) is the highest, least-controlled figure in this entire batch, consistent with owner reports of a slightly loose, boomy low end at higher volumes. On-axis response is also relatively uneven, with narrow-band deviation of about 0.51dB. The vinyl-wrapped (not wood veneer) cabinet reads as budget up close per owner reviews, and at least one owner reported blowing a driver under sustained heavy bass: some caution is warranted with bass-heavy source material at volume.
Full Polk Audio XT60 review and specifications →
| Bass Extension (-10dB) | 38.1Hz (measured, spinorama.org) |
|---|---|
| Bass Extension (-3dB) | 43.9Hz (measured, spinorama.org) |
| DIY Kit | No |
| Dimensions | 19.05 x 92.5 x 23.09cm (7.5 x 36.4 x 9.09 in) each |
| Drivers | 1” Terylene dome tweeter, 6.5” bilaminate polypropylene woofer, 2x 6.5” passive radiators |
| Impedance | 4/8-ohm compatible |
| Sensitivity | 86dB (1W/1m) |
| Spinorama Preference Score | 5.19 |
| Spinorama Preference Score with Perfect Sub | 7.13 |
| Weight | 20 lbs (9.07 kg) each |
| Woofer Cabinet | Passive radiator-loaded |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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