Short answer: the Philharmonic Ceramic Mini. It ranks #2 of 179 bookshelf speakers by sound quality, rated 4.7/5, at $900. The Polk T15 ranks #164, rated 1.9/5, at $149, $751 cheaper, which does not close the gap in sound quality.
Why pick the Polk T15: A very affordable bookshelf speaker for near-field desktop use. The catch: Spinorama analysis shows a deep on-axis dip from 3 to 6kHz in the upper mids and lower treble, likely from tweeter-woofer phase cancellation directly on-axis.
The Philharmonic Ceramic Mini is the more accurate, deeper-bass pick. A beautifully finished bookshelf speaker with near reference accuracy, low distortion, a touch of warmth and a wide soundstage. Its measured preference score, a predictor of how neutral it sounds, is 5.77 against 0.34 for the Polk T15. Its bass reaches about 51Hz before falling 3dB, against 88.6Hz for the Polk T15. Watch for: Somewhat limited output capability for its size: audible woofer compression (“flopping”) around 95dB at 3 meters for a stereo pair, so keep to moderate levels or pair with a subwoofer for home theater use.
Buy the Philharmonic Ceramic Mini. It is rated higher for sound quality, and the $751 you would save on the Polk T15 does not close the gap.
Looking for alternatives? See the complete Passive Home rankings.
A very affordable bookshelf speaker for near-field desktop use.
A beautifully finished bookshelf speaker with near reference accuracy, low distortion, a touch of warmth and a wide soundstage.
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Specifications Side By Side
| Polk T15 | Philharmonic Ceramic Mini | |
|---|---|---|
| Price | $149.00 per pair | $900 per pair |
| Ranked | #164 of 179 in Medium Size Bookshelf Speakers | #2 of 179 in Medium Size Bookshelf Speakers |
| Drivers | 0.75” tweeter, 5.25” woofer | 5.25” ceramic woofer, 1” ceramic dome tweeter |
| Dimensions | 10.63H x 6.5W x 7.25D in | 12” x 8.5” x 11.3” (305 x 216 x 286 mm) |
| Weight | 8.2 lbs (3.74 kg) each | 17 lbs (7.7 kg) |
| Frequency Response | 60Hz - 24kHz (Manufacturer specified) | 55Hz - 20kHz (+1.5/-3dB, Manufacturer specified, ported) |
| Bass Extension (-3dB) | 88.6Hz (measured, Audio Science Review) | 51Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 58.1Hz (measured, Audio Science Review) | 36Hz (measured, Erin’s Audio Corner) |
| Impedance | 8 ohms nominal | 4 ohms nominal (3.2 ohms min, 15 ohms max) (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 0.34 | 5.77 |
| Spinorama Preference Score with Perfect Sub | 3.39 | 7.78 |
| Sensitivity | 89dB (manufacturer specified, 1W/1m); 88.98dB measured, spinorama.org | 82dB (2.83V/1m, measured by Erin’s Audio Corner) |
| DIY Kit | No | No |
| Crossover Frequency | - | 2kHz (Linkwitz-Riley 4th order) |
| Woofer Cabinet | - | ported, rear |
| Country | - | USA (Vienna, Virginia) |
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