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 ELAC Carina BS243.4 ranks #18, rated 4.2/5, and costs $1,199, which makes this an easy call rather than a real tradeoff.
The Ascend Acoustics Sierra 1 v2 is the more accurate option. 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 4.85 for the ELAC Carina BS243.4. The tradeoff: 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.
The case for the ELAC Carina BS243.4: JET folded-ribbon tweeter (ELAC’s signature technology, normally reserved for its pricier lines) mounted over a 5.25” aluminum-cone woofer, a genuinely differentiated tweeter for a sub-$1,200/pair stand-mount. The tradeoff: On-axis response shows more ripple than pricier active speakers, with an average deviation of about 0.53dB, and its listening window is only middling in smoothness.
Buy the Ascend Acoustics Sierra 1 v2. It is rated higher for sound quality than the ELAC Carina BS243.4 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Ascend Acoustics Sierra 1 v2 | ELAC Carina BS243.4 | |
|---|---|---|
| Price | $1000 per pair | $1,199 per pair |
| Ranked | #3 of 178 in Medium Size Bookshelf Speakers | #18 of 178 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | 41.5Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) | 55.7Hz (measured, spinorama.org) |
| Dimensions | 14.2”H x 7.5”W x 10.5”D (361.9 x 190.5 x 266.7 mm) | 8.5” x 12.6” x 9.6” (216 x 319 x 245 mm) each |
| Impedance | 8 ohms nominal, 7 ohms minimum (measured, Erin’s Audio Corner) | 6 ohm nominal, 4.8 ohm minimum |
| Sensitivity | 81.5dB (measured, Erin’s Audio Corner) | 85dB (2.83V/1m) |
| Drivers | 5.25” proprietary mineral-filled polypropylene cone with cast aluminum frame woofer, 26mm aluminum/magnesium alloy dome tweeter with titanium former (SEAS Titan) | JET folded-ribbon tweeter, 5.25” aluminum cone woofer |
| Weight | 18.5 lbs (8.4 kg) each | 14.8 lbs (6.7 kg) each |
| Woofer Cabinet | ported | Bass reflex |
| Spinorama Preference Score | 6.65 | 4.85 |
| Spinorama Preference Score with Perfect Sub | 8.61 | 6.99 |
| DIY Kit | No | No |
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 ELAC Carina BS243.4 (measured by Audio Science Review), via spinorama.org.
Related Speaker Comparisons
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The Two Speakers In Full
Ascend Acoustics Sierra 1 v2: $1000 per pair Ascend Acoustics $1000 eBay
Same family: the Ascend Acoustics Sierra-2EX V2 (larger bookshelf, rated 4.3/5), the Ascend Acoustics Sierra-LX (larger bookshelf, rated 4.3/5), the Ascend Acoustics Sierra Titan Tower (floorstanding, rated 4.4/5) and the Ascend Acoustics Sierra Horizon V2 (center, estimated 4.3/5). See every Ascend Sierra generation.
Pros: 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. In-room response is extremely linear (the reviewer called it “textbook”) a clear step up from the earlier V1, which had boxiness around 700Hz-1kHz and sibilance around 4-6kHz. Preference score of 8.4 with a subwoofer (6.8 without), which the reviewer calls topnotch. Wide, even horizontal radiation of about ±70° up to 6kHz. Better vertical directivity than its tweeter-to-woofer spacing would suggest, thanks to the steep 4th-order crossover slopes. No mechanical noise, port chuffing, or woofer bottoming even driven to 96dB/1m. In a three-way comparison against the Dynaudio Emit 20 and a Revel bookshelf model (all around $1,000/pair), measured as the most linear of the three and was the reviewer’s personal pick over both, despite the Dynaudio’s deeper bass and higher output capability. Independent ASR Klippel measurements corroborate Erin’s findings: superb off-axis response with only slight on-axis variations, and an in-room response the reviewer called “incredibly smooth and accurate. Amazing for a non-DSP speaker.” Distortion above 200Hz at 86dB/1m is very low for the class. Measured bass extension of 55Hz (-3dB), with a measured sensitivity of 81.5dB.
Cons: 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. Diffraction dips appear around 3kHz and 5-6kHz, and the 1” dome tweeter starts beaming above roughly 6.7kHz, narrowing the soundstage radiation in the top octave: a straightforward consequence of dome size rather than a design flaw. At 96dB/1m the 5.25” midwoofer shows increased distortion in the midrange, likely tied to motor topology; high-passing to a subwoofer around 80Hz largely clears it up. Moderate sensitivity (~81-82dB average) with a 7-ohm minimum impedance. ASR’s power-sweep testing found response holds steady up to 96dB SPL/1m, but pushing to 102dB causes midbass below 400Hz to sag with distortion “through the roof”: a harder output ceiling than the 96dB tests alone suggest. Vertical directivity also narrows above about 1kHz, so the reviewer recommends staying at tweeter-axis height for best results.
Full Ascend Acoustics Sierra 1 v2 review and specifications →
| Released | Dec 2023 (2 years ago) |
|---|---|
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 14.2”H x 7.5”W x 10.5”D (361.9 x 190.5 x 266.7 mm) |
| Drivers | 5.25” proprietary mineral-filled polypropylene cone with cast aluminum frame woofer, 26mm aluminum/magnesium alloy dome tweeter with titanium former (SEAS Titan) |
| Impedance | 8 ohms nominal, 7 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 81.5dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 6.65 |
| Spinorama Preference Score with Perfect Sub | 8.61 |
| Weight | 18.5 lbs (8.4 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: NEW! Ascend Acoustics Sierra-1 V2 Review More from Erin’s Audio Corner →
- Erin’s Audio Corner: 5 AWESOME SPEAKERS Under $1000 You Won’t Regret
- Erin’s Audio Corner: I Tested 250 Speakers So You Don’t Have To!
- Erin’s Audio Corner: My Top Picks of 2023: Must-Haves Under $3000
- Erin’s Audio Corner Website Ascend Sierra 1 v2
- Audio Science Review Ascend Sierra 1 v2 More from Audio Science Review →
- Manufacturer Measurements (spinorama.org)
- Head-to-Head Comparisons
- Ascend Acoustics Sierra 1 v2 vs KEF LS50 Meta
- Ascend Acoustics Sierra 1 v2 vs Philharmonic Ceramic Mini
- Ascend Acoustics Sierra 1 v2 vs Audio First Fidelia
- Ascend Acoustics Sierra 1 v2 vs XMechanik Mechano23 DIY
- Ascend Acoustics Sierra 1 v2 vs Ascend Acoustics HTM-200SE2
- Ascend Acoustics Sierra 1 v2 vs Arendal 1961 Monitor
- Ascend Acoustics Sierra 1 v2 vs Ascend Acoustics Luna V2 Mini-Monitor Titan
- Ascend Acoustics Sierra 1 v2 vs Aalto Speakers Aalto 1 EVO
- See all 50 comparisons
ELAC Carina BS243.4: $1,199 per pair B&H Photo Video $1,199 ELAC $1,199.00 eBay
Same family: the ELAC Carina FS247.4 (floorstanding, estimated 4.2/5) and the ELAC Carina CC241.4 (center, estimated 3.6/5).
Pros: JET folded-ribbon tweeter (ELAC’s signature technology, normally reserved for its pricier lines) mounted over a 5.25” aluminum-cone woofer, a genuinely differentiated tweeter for a sub-$1,200/pair stand-mount. Positively reviewed by Stereophile and The Absolute Sound for fatigue-free treble detail. Measured bass extension of 55.7Hz (-3dB).
Cons: On-axis response shows more ripple than pricier active speakers, with an average deviation of about 0.53dB, and its listening window is only middling in smoothness. Moderate 85dB sensitivity paired with a 4.8-ohm minimum impedance wants a reasonably powerful amp. Bass extension is average for a 5.25” 2-way at 55.7Hz (-3dB) / 41.5Hz (-10dB).
Full ELAC Carina BS243.4 review and specifications →
| Released | Aug 2019 (7 years ago) |
|---|---|
| Bass Extension (-10dB) | 41.5Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 55.7Hz (measured, spinorama.org) |
| DIY Kit | No |
| Dimensions | 8.5” x 12.6” x 9.6” (216 x 319 x 245 mm) each |
| Drivers | JET folded-ribbon tweeter, 5.25” aluminum cone woofer |
| Impedance | 6 ohm nominal, 4.8 ohm minimum |
| Sensitivity | 85dB (2.83V/1m) |
| Spinorama Preference Score | 4.85 |
| Spinorama Preference Score with Perfect Sub | 6.99 |
| Weight | 14.8 lbs (6.7 kg) each |
| Woofer Cabinet | Bass reflex |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- ELAC Carina BS243.4 vs Arendal Sound 1961 Bookshelf
- ELAC Carina BS243.4 vs Monitor Audio Silver 50 7G
- ELAC Carina BS243.4 vs Aalto Speakers Aalto 1 EVO
- ELAC Carina BS243.4 vs Ascend Acoustics Luna V2 Mini-Monitor Titan
- ELAC Carina BS243.4 vs Wharfedale Super Denton
- ELAC Carina BS243.4 vs Arendal 1961 Monitor
- ELAC Carina BS243.4 vs Ascend Acoustics HTM-200SE2
- ELAC Carina BS243.4 vs XMechanik Mechano23 DIY
- See all 21 comparisons