Short answer: the Ascend Acoustics Sierra 1 v2. It ranks #3 of 178 bookshelf speakers by sound quality, rated 4.7/5, at $1,000. The Fluance Signature HFS ranks #161, rated 2.1/5, at $199.99, $800.01 cheaper, a saving that is not big enough to make up the sound-quality gap.
The Ascend Acoustics Sierra 1 v2 is the more accurate, deeper-bass pick. Formaldehyde-free layered bamboo ply cabinet with a 1” dome tweeter over a 5.25” midwoofer, mated by a 4th-order acoustic crossover rather than a stock textbook design. Its measured preference score, a predictor of how neutral it sounds, is 6.65 against 2.92 for the Fluance Signature HFS. Its bass reaches about 55Hz before falling 3dB, against 78Hz for the Fluance Signature HFS. Watch for: F3 of 55Hz and F10 of 39Hz mean in-room extension tops out in the mid-40s Hz; the reviewer still recommends a subwoofer for full-range material.
Why pick the Fluance Signature HFS: Front-facing port and pre-installed wall-mount brackets make it flexible for bookshelf or surround/height duty. The catch: CEA2034 spinorama shows serious flaws in the midrange: both the direct sound and the directivity are compromised, a combination the reviewer flagged as poor for controlled listening tests.
Buy the Ascend Acoustics Sierra 1 v2. It is rated higher for sound quality, and the $800.01 saving on the Fluance Signature HFS is not enough to make up the difference.
Want more options? Browse the full Passive Home rankings.
Formaldehyde-free layered bamboo ply cabinet with a 1” dome tweeter over a 5.25” midwoofer, mated by a 4th-order acoustic crossover rather than a stock textbook design.
Ascend Acoustics $1000 eBay
Front-facing port and pre-installed wall-mount brackets make it flexible for bookshelf or surround/height duty.
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Specifications Side By Side
| Ascend Acoustics Sierra 1 v2 | Fluance Signature HFS | |
|---|---|---|
| Price | $1000 per pair | $199.99 per pair |
| Ranked | #3 of 178 in Medium Size Bookshelf Speakers | #161 of 178 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | 60Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) | 78Hz (measured, Audio Science Review) |
| Dimensions | 14.2”H x 7.5”W x 10.5”D (361.9 x 190.5 x 266.7 mm) | 12.8H x 7.87W x 8.22D in |
| Impedance | 8 ohms nominal, 7 ohms minimum (measured, Erin’s Audio Corner) | 8 ohms |
| Sensitivity | 81.5dB (measured, Erin’s Audio Corner) | 86dB (2.83V/1m, measured, Audio Science Review) |
| Drivers | 5.25” proprietary mineral-filled polypropylene cone with cast aluminum frame woofer, 26mm aluminum/magnesium alloy dome tweeter with titanium former (SEAS Titan) | 1” neodymium silk dome tweeter (ferrofluid cooled), 5” glass-fiber-treated woofer (butyl rubber surround) |
| Weight | 18.5 lbs (8.4 kg) each | 9.7 lbs (4.4 kg) each |
| Woofer Cabinet | ported | ported, front |
| Spinorama Preference Score | 6.65 | 2.92 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 8.61 | 5.53 (spinorama.org) |
| DIY Kit | No | No |
| Power Handling | - | 30-120W recommended |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared. The two were measured by different sources, so small differences, especially in the bass, can come from the measurement setup rather than the speakers.
Measurement data: Ascend Acoustics Sierra 1 v2 (measured by the manufacturer) and Fluance Signature HFS (measured by Audio Science Review), via spinorama.org.
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