Short answer: the Triangle Borea BR03, though neither ranks well in its class. It ranks #198 of 222 bookshelf speakers by sound quality, rated 2.8/5, at $399; the ATC SCM19 ranks #209, rated 2.4/5, and costs $3,750, so there is little reason to consider the other one. Both are rated below 3.0/5 among the 222 bookshelf speakers, so if sound quality matters, consider the March Audio Sointuva AWG instead, ranked #5 at $4,150.
The Triangle Borea BR03 is the better-sounding choice. A budget French bookshelf speaker with dual front ports, decent bass for the price and solid, well braced build quality. The catch: A noticeable mid-range suckout, most pronounced in the upper mid-range/lower treble, that the reviewer attributes to cabinet resonances and driver breakup rather than a deliberate voicing choice: it makes vocals and instruments sound recessed and thin rather than warm.
The ATC SCM19 is the more accurate choice. A heavy, sealed pro style ATC bookshelf speaker with a very dense cabinet and low distortion at high volume. Its measured preference score, a predictor of how neutral it sounds, is 4.61 against 4.03 for the Triangle Borea BR03. The catch: Some stored energy resonance around 500-700Hz, 4dB bump around 700Hz.
Buy the Triangle Borea BR03. It is rated higher for sound quality than the ATC SCM19 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Passive Home rankings.
A budget French bookshelf speaker with dual front ports, decent bass for the price and solid, well braced build quality.
A heavy, sealed pro style ATC bookshelf speaker with a very dense cabinet and low distortion at high volume.
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Specifications Side By Side
| Triangle Borea BR03 | ATC SCM19 | |
|---|---|---|
| Price | $399.00 per pair | $3750 per pair |
| Ranked | #198 of 222 in Large Size Bookshelf Speakers | #209 of 222 in Large Size Bookshelf Speakers |
| Drivers | 6.5” natural cellulose midwoofer, 1” (25mm) EFS silk dome tweeter | 5.9” Super Linear Magnet cone woofer, 1” soft dome tweeter |
| Crossover Frequency | 3600Hz | - |
| Dimensions | 14.96”H x 8.11”W x 12.36”D | 17.2”H x 10.4”W x 11.8”D (436.9 x 264.2 x 299.7 mm) |
| Weight | 13.2 lbs (6 kg) each | 39.2 lbs (17.8 kg) each |
| Impedance | 8 ohms nominal (manufacturer spec), 4.2 ohms minimum (measured, Erin’s Audio Corner) | 6 ohms |
| Sensitivity | 87.5dB (measured at 2.83V/1m, Erin’s Audio Corner) | 85dB (measured, Audio Science Review) |
| Bass Extension (-3dB) | 57Hz (measured, Erin’s Audio Corner) | 60Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 42Hz (measured, Erin’s Audio Corner) | 34Hz (measured, Audio Science Review) |
| Recommended Power | 100W | - |
| Woofer Cabinet | ported, dual front ports | sealed |
| Spinorama Preference Score | 4.03 | 4.61 |
| Spinorama Preference Score with Perfect Sub | 6.38 | 7.03 |
| DIY Kit | No | No |
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