Short answer: the Ascend Acoustics Sierra Duo V2 Ribbon if sound quality matters most, the ELAC DBR62 if price matters most. The Ascend Acoustics Sierra Duo V2 Ribbon ranks #53 of 131 bookshelf speakers, rated 4.1/5, at $1,688. The ELAC DBR62 ranks #55, rated 4.0/5, at $799, $889 cheaper.
What the Ascend Acoustics Sierra Duo V2 Ribbon does well: High-quality manufacturer NFS data gives the RAAL version a low 2.09 sound-power directivity-index standard deviation, the most consistent dispersion of the two Duo V2 variants. The tradeoff: Bass measures 79.1Hz at -3dB, 64.5Hz at -6dB, and 43.9Hz at -12dB, and the 0.645dB on-axis average absolute deviation trails the Titan version’s 0.585dB.
What the ELAC DBR62 does well: Two-way design with a 6.5” woofer and 1” dome tweeter in a shallow waveguide, with the tweeter positioned close to the woofer for near-point-source coherence - giving more vertical listening leeway than typical two-ways. Watch for: A slight recess in the 1-2kHz region reduces vocal presence somewhat compared to other speakers in direct comparison.
Buy the Ascend Acoustics Sierra Duo V2 Ribbon if sound quality is the priority over the price, or the ELAC DBR62 if the price is the priority over sound quality.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Ascend Acoustics Sierra Duo V2 Ribbon | ELAC DBR62 | |
|---|---|---|
| Price | $1,688 per pair | $799.00 per pair |
| Ranked | #53 of 131 in Large Size Bookshelf Speakers | #55 of 131 in Large Size Bookshelf Speakers |
| Bass Extension (-3dB) | 79.1Hz (measured, spinorama.org) | 53Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | approximately 50Hz (measured, spinorama.org) | 41Hz (measured, Erin’s Audio Corner) |
| Drivers | Two 4.5-inch glass-fiber woofers; custom RAAL true ribbon tweeter | 6.5” Aramid Fiber woofer, 1” soft dome tweeter |
| Sensitivity | 86dB at 2.83V/1m anechoic | 84.3dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin’s Audio Corner; 86dB manufacturer specified) |
| Impedance | 8 ohms nominal | 6 ohms nominal, 5.2 ohms minimum (measured above 80Hz, Erin’s Audio Corner) |
| Dimensions | 16.25 x 5.75 x 6 in each | 14.1”H x 8.2”W x 10.8”D (358.1 x 208.3 x 274.3 mm) |
| Weight | 12.3 lbs (5.6 kg) each | 18.1 lbs (8.2 kg) each |
| Spinorama Preference Score | 4.53 | 5.07 |
| Spinorama Preference Score with Perfect Sub | 7.15 | 7.27 |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported, front |
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How Ascend Acoustics Sierra Duo V2 Ribbon compares with other leading options:
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Prices on this page were last checked September 26, 2026 at 11:14 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Ascend Acoustics Sierra Duo V2 Ribbon: $1,688 per pair Ascend Acoustics eBay
Older model: the Ascend Sierra Luna Duo (rated 1.2/5).
Pros: High-quality manufacturer NFS data gives the RAAL version a low 2.09 sound-power directivity-index standard deviation, the most consistent dispersion of the two Duo V2 variants. Its preference score improves from 4.53 to 7.15 with a subwoofer, while the compact bamboo cabinet, dual front slots, and vertical or horizontal mounting options are unusually flexible. Measured bass extension of 79.1Hz (-3dB).
Cons: Bass measures 79.1Hz at -3dB, 64.5Hz at -6dB, and 43.9Hz at -12dB, and the 0.645dB on-axis average absolute deviation trails the Titan version’s 0.585dB. The 0.410 normalized listening-window deviation and narrow horizontal dispersion when the MTM cabinet is placed horizontally make vertical orientation preferable; a subwoofer is strongly recommended.
Full Ascend Acoustics Sierra Duo V2 Ribbon review and specifications →
| Bass Extension (-10dB) | approximately 50Hz (measured, spinorama.org) |
|---|---|
| Bass Extension (-3dB) | 79.1Hz (measured, spinorama.org) |
| DIY Kit | No |
| Dimensions | 16.25 x 5.75 x 6 in each |
| Drivers | Two 4.5-inch glass-fiber woofers; custom RAAL true ribbon tweeter |
| Impedance | 8 ohms nominal |
| Sensitivity | 86dB at 2.83V/1m anechoic |
| Spinorama Preference Score | 4.53 |
| Spinorama Preference Score with Perfect Sub | 7.15 |
| Weight | 12.3 lbs (5.6 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ascend Acoustics Sierra Duo V2 Ribbon vs ELAC Debut 3.0 DB63
- Ascend Acoustics Sierra Duo V2 Ribbon vs Klipsch RP-600M II
- Ascend Acoustics Sierra Duo V2 Ribbon vs Wharfedale Linton 85
- Ascend Acoustics Sierra Duo V2 Ribbon vs Wharfedale Super Linton
- Ascend Acoustics Sierra Duo V2 Ribbon vs KEF R3
- Ascend Acoustics Sierra Duo V2 Ribbon vs KEF Q Concerto Meta
- Ascend Acoustics Sierra Duo V2 Ribbon vs KEF R3 Meta
ELAC DBR62: $799.00 per pair Amazon Crutchfield eBay
Pros: Two-way design with a 6.5” woofer and 1” dome tweeter in a shallow waveguide, with the tweeter positioned close to the woofer for near-point-source coherence - giving more vertical listening leeway than typical two-ways. Notably forgiving of placement and aiming: sounds good from directly on-axis all the way to 30° of toe-out (parallel with the rear wall), making it more room-independent than many speakers this price. Wide horizontal radiation of about ±70° until the tweeter starts beaming, right in the reviewer’s preferred sweet spot. A mild, wide-Q bass bump centered around 100Hz adds a bit of extra punch that the reviewer personally likes. On-axis linearity within about ±2.5dB, with a strong measured preference score of 5.3. Distortion stays below 3% at both 86dB and 96dB until around 50Hz. Vertical sweet spot of about ±10-20° works well for multi-row home theater seating. The reviewer calls it “the epitome of a good speaker” for its price, with no reservations recommending it. Measured bass extension of 53Hz (-3dB), with a measured sensitivity of 84.3dB.
Cons: A slight recess in the 1-2kHz region reduces vocal presence somewhat compared to other speakers in direct comparison. A mild hot spot around 4-5kHz can read as slight sibilance when pointed directly on-axis. Low-to-mid sensitivity (about 84.3dB) combined with a current draw that behaves like roughly 2.4 ohms between 100-200Hz means it’s best driven by a dedicated 4-ohm-capable amplifier rather than an AVR. A diffraction dip from the baffle edge is visible in measurements - typical of any standard rectangular-baffle speaker and not correctable without a much more expensive curved-baffle design. Multitone distortion testing suggests some potential midrange distortion could be audible on certain material, though the reviewer didn’t personally notice it. Minor resonances appear around 700Hz and 1-1.5kHz, possibly tied to the enclosure, port, or cone/surround edge termination, though their audible impact appears minimal. F3 of 53Hz means a subwoofer is still needed for real bass extension below about 40Hz.
Full ELAC DBR62 review and specifications →
| Bass Extension (-10dB) | 41Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 53Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 14.1”H x 8.2”W x 10.8”D (358.1 x 208.3 x 274.3 mm) |
| Drivers | 6.5” Aramid Fiber woofer, 1” soft dome tweeter |
| Impedance | 6 ohms nominal, 5.2 ohms minimum (measured above 80Hz, Erin’s Audio Corner) |
| Sensitivity | 84.3dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin’s Audio Corner; 86dB manufacturer specified) |
| Spinorama Preference Score | 5.07 |
| Spinorama Preference Score with Perfect Sub | 7.27 |
| Weight | 18.1 lbs (8.2 kg) each |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: Top 3 Things You Need to Know About ELAC DBR62 Before You Buy More from Erin’s Audio Corner →
- Erin’s Audio Corner Website Elac DBR62
- Erin’s Audio Corner: 5 AWESOME SPEAKERS Under $1000 You Won’t Regret
- Erin’s Audio Corner: My Top Picks of 2023: Must-Haves Under $3000
- Audio Science Review Measurements More from Audio Science Review →
- Erin’s Audio Corner Measurements (spinorama.org)
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