Short answer: the Sonus Faber Lumina II for better sound quality, the Polk Reserve R100 for the lower price. The Sonus Faber Lumina II ranks #66 of 100 bookshelf speakers at $1600. The Polk Reserve R100 ranks #70 at $649, $951 cheaper.
On the Sonus Faber Lumina II side: Handmade in Italy with a gloss-finished front baffle and black leather-wrapped cabinet - genuinely nice-looking speaker with real brand cachet. Set against that: Not a neutral speaker - has a persistent high-frequency boost/lift that makes it sound forward and bright, present whether pointed directly at the listener or toed out.
What the Polk Reserve R100 offers: Compact cabinet, unusually useful bass for its size and well-controlled woofer breakup. Watch for: Erin measured only about 85dB sensitivity and the impedance reaches 3.6 ohms, so it is neither efficient nor an entirely benign AVR load.
Buy the Sonus Faber Lumina II if sound quality matters more than the price. Buy the Polk Reserve R100 if the price matters more than sound quality.
Specifications Side By Side
| Sonus Faber Lumina II | Polk Reserve R100 | |
|---|---|---|
| Price | $1600 | $649/pair |
| Ranked | #66 of 100 in Large Size Bookshelf Speakers | #70 of 100 in Large Size Bookshelf Speakers |
| Drivers | 29mm DAD dome tweeter, 150mm paper cone mid-woofer | 1" Pinnacle ring-radiator tweeter; 5.25" Turbine Cone midwoofer |
| Crossover Frequency | 1800Hz | - |
| Dimensions | 12"H x 7.1"W x 10.3"D (304 x 180 x 263mm) | 12.8"H x 6.5"W x 10.2"D |
| Weight | 12.5 lbs (12.5 lbs / 5.65 kg) each | 12.2 lb each |
| Impedance | 4 ohms nominal, 4.1 ohms minimum (measured, Erin’s Audio Corner) | 3.6 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 86dB (measured average, Erin’s Audio Corner; matches manufacturer spec) | 85dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) | 68Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 41Hz (measured, Erin’s Audio Corner) | 49Hz (measured, Erin’s Audio Corner) |
| Frequency Response | 55Hz - 24kHz (manufacturer specified) | - |
| Recommended Power | 30W - 150W | - |
| Woofer Cabinet | - | ported, rear X-Port |
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- KEF Q Concerto Meta vs Polk R200
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The Two Speakers In Full
Sonus Faber Lumina II: $1600 Crutchfield
Pros: Handmade in Italy with a gloss-finished front baffle and black leather-wrapped cabinet - genuinely nice-looking speaker with real brand cachet. Bass extension is competitive for the size, reaching about 50 Hz in-room with mild compression and good distortion figures, so higher output levels and greater listening distances aren’t a problem down to that point. About 20 dB of dynamic range at typical listening levels (73 dB at 4m), which comfortably covers most music without the tonal balance shifting as instruments and vocals peak. Off-axis behavior is consistent - toeing the speakers 20-30 degrees out doesn’t meaningfully change the in-room high-frequency character, so placement flexibility is good once you’ve dialed in the tonal balance.
Cons: Not a neutral speaker - has a persistent high-frequency boost/lift that makes it sound forward and bright, present whether pointed directly at the listener or toed out. A slightly nasal quality traced to a resonance around 1 kHz that EQ can address. The reviewer needed to trim treble by about 4 dB on his preamp to get the tonal balance he wanted, meaning most listeners will want equalization available to fully enjoy this speaker. At roughly the same $1,000ish price point, alternatives like the Ascend Acoustics Sierra 1 V2 measure more linear (with a tradeoff in distortion and crossover-region directivity), and the Dynaudio Emit 20 offers deeper bass extension and lower compression at the cost of a more deliberately colored tonal signature.
Full Sonus Faber Lumina II review and specifications →
| Bass Extension (-10dB) | 41Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 60Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 1800Hz |
| Dimensions | 12"H x 7.1"W x 10.3"D (304 x 180 x 263mm) |
| Drivers | 29mm DAD dome tweeter, 150mm paper cone mid-woofer |
| Frequency Response | 55Hz - 24kHz (manufacturer specified) |
| Impedance | 4 ohms nominal, 4.1 ohms minimum (measured, Erin's Audio Corner) |
| Recommended Power | 30W - 150W |
| Sensitivity | 86dB (measured average, Erin's Audio Corner; matches manufacturer spec) |
| Weight | 12.5 lbs (12.5 lbs / 5.65 kg) each |
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- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sonus Faber Lumina II vs Focal Aria 906
- Sonus Faber Lumina II vs Polk Monitor XT20
- Sonus Faber Lumina II vs KEF Q3 Meta
- Sonus Faber Lumina II vs Revel Performa M22
- Sonus Faber Lumina II vs Polk R200
- Sonus Faber Lumina II vs SVS Prime Bookshelf
- Sonus Faber Lumina II vs ELAC Debut 2.0 B6.2
- Sonus Faber Lumina II vs JBL XPL-90
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Polk Reserve R100: $649/pair Amazon Polk Audio
Pros: Compact cabinet, unusually useful bass for its size and well-controlled woofer breakup. Erin measured F3/F10 points of 68Hz/49Hz, and the X-Port vent avoids much of the chuffing and pipe resonance common to budget rear ports. The 5.25-inch Turbine Cone woofer and 1-inch Pinnacle ring-radiator tweeter produce good detail at moderate levels, while listening roughly 20° off-axis reduces part of the elevated top octave.
Cons: Erin measured only about 85dB sensitivity and the impedance reaches 3.6 ohms, so it is neither efficient nor an entirely benign AVR load. The treble runs roughly 3dB above the midrange and becomes aggressive above about 85dB SPL. A directivity discontinuity through the woofer/tweeter crossover means EQ cannot fully repair the power response, and a 400Hz impedance feature plus 500Hz-1kHz response irregularity suggests a cabinet or system resonance. Substantial low-frequency compression at higher playback levels limits clean dynamics.
Full Polk Reserve R100 review and specifications →
| Bass Extension (-10dB) | 49Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 68Hz (measured, Erin's Audio Corner) |
| Dimensions | 12.8"H x 6.5"W x 10.2"D |
| Drivers | 1" Pinnacle ring-radiator tweeter; 5.25" Turbine Cone midwoofer |
| Impedance | 3.6 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 85dB/2.83V/1m (measured, Erin's Audio Corner) |
| Weight | 12.2 lb each |
| Woofer Cabinet | ported, rear X-Port |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Polk Reserve R100 vs Polk R200
- Polk Reserve R100 vs JBL XPL-90
- Polk Reserve R100 vs Emotiva Airmotiv B2+
- Polk Reserve R100 vs Revel Performa M22
- Polk Reserve R100 vs Focal Aria 906
- Polk Reserve R100 vs Sonus Faber Sonetto II G2
- Polk Reserve R100 vs Polk Monitor XT20
- Polk Reserve R100 vs KEF Q3 Meta
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