Short answer: neither is a safe pick, since both are compromised. The Diapason Emera’s direct-driven woofer has no crossover component in the bass path, and its handcrafted Italian cabinet shows very good fit and finish, but its CEA2034 spinorama shows attenuated bass and scattered peaks and dips. The Chesky LC1 has premium parts, yet sounded dull, hollow and unengaging with recessed vocals and minimal bass. Both are rated below 3.0/5 among the 134 bookshelf speakers; for better sound, the AsciLab C6B ranks #6 at $1,145.
Buy the Diapason Emera only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the AsciLab C6B instead.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Diapason Emera | Chesky LC1 | |
|---|---|---|
| Price | $1,050 per pair Discontinued | $1,000 per pair Discontinued |
| Ranked | #124 of 134 in Large Size Bookshelf Speakers | #126 of 134 in Large Size Bookshelf Speakers |
| Bass Extension (-3dB) | 90Hz (measured, Audio Science Review) | 71Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 62Hz (measured, Audio Science Review) | 49Hz (measured, Erin’s Audio Corner) |
| Drivers | 170mm direct-driven (crossoverless) mid/woofer, 20mm Kapton isodynamic tweeter | 1” tweeter + 4” woofer |
| Woofer Cabinet | sealed | passive radiator |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) | 81.4dB (measured, Erin’s Audio Corner) |
| Impedance | 8 ohms nominal | 8 ohms nominal (8.4 ohms minimum, measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 2.69 (spinorama.org) | 3.21 |
| Spinorama Preference Score with Perfect Sub | 6.07 (spinorama.org) | 5.87 |
| Dimensions | 7.9” x 11.4” x 14.4” (200 x 290 x 365 mm) | 10”H x 8”W x 10”D (254.0 x 203.2 x 254.0 mm) |
| Weight | 11.7 lbs (5.3 kg) | 17.6 lbs (8 kg) |
| DIY Kit | No | No |
Related Speaker Comparisons
How Diapason Emera compares with other leading options:
- ELAC Debut 3.0 DB63 vs Diapason Emera
- Wharfedale Diamond 9.1 vs Chesky LC1
- JBL Studio 630 vs Chesky LC1
- Sonus Faber Lumina II vs Chesky LC1
- ELAC Debut 3.0 DB63 vs Chesky LC1
Prices on this page were last checked October 3, 2026 at 10:26 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
Diapason Emera: $1,050 per pair Discontinued eBay
Pros: A direct-driven woofer with no crossover component in the bass path is a distinctive design choice shared with Totem Acoustics speakers, and fit and finish on the handcrafted Italian cabinet is very good. Distortion is reasonable at 86dB SPL. Measured bass extension of 90Hz (-3dB), with a measured sensitivity of 85dB.
Cons: CEA2034 spinorama shows an aggressively engineered response with attenuated bass and peaks/dips scattered through the rest of the spectrum, and directivity falls apart around the 4.8kHz crossover point. Distortion gets notably worse at 96dB SPL. The reviewer’s first impression out of the box was “disappointing.. bright, with no bass and dull,” and while EQ made a dramatic improvement, the conclusion was “I can’t recommend the Diapason Emera speaker.” A 2002-era design no longer listed among Diapason’s current models.
Full Diapason Emera review and specifications →
| Bass Extension (-10dB) | 62Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 90Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 7.9” x 11.4” x 14.4” (200 x 290 x 365 mm) |
| Drivers | 170mm direct-driven (crossoverless) mid/woofer, 20mm Kapton isodynamic tweeter |
| Impedance | 8 ohms nominal |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) |
| Spinorama Preference Score | 2.69 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 6.07 (spinorama.org) |
| Weight | 11.7 lbs (5.3 kg) |
| Woofer Cabinet | sealed |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Chesky LC1: $1,000 per pair Discontinued eBay
Pros: Premium build details: silver-soldered crossover with film capacitors, dual inertially-balanced 8” passive radiators, and a multi-layer, non-resonant cabinet construction. Wide horizontal radiation of about ±60-70° through the midrange, in the reviewer’s preferred range. Extremely easy to drive electrically (minimum impedance about 8.4 ohms, minimum EPDR 5.4 ohms). Distortion shows good separation between second- and third-order harmonics at both 86dB and 96dB. The reviewer took the unusual step of verifying his measurements weren’t due to a defective unit: he impedance-swept both speakers, then corresponded directly with the manufacturer, whose own measurements matched his, confirming the sound reflects the actual product design. Measured bass extension of 71Hz (-3dB), with a measured sensitivity of 81.4dB.
Cons: Overall tonal balance sounded dull, hollow, and unengaging in extensive listening, with recessed vocals (both male and female) and minimal bass: the reviewer independently confirmed the same impressions auditioning the speakers at an audio show, ruling out a fluke with his own pair. Essentially no meaningful bass below about 90-100Hz in-room (F3 71Hz, F10 49Hz), well short of the 50Hz frequency-response spec, and measured sensitivity (about 81.4dB) runs well below the 86dB claimed. A pattern of peaks and dips across the spectrum, rather than a simple tilt, makes different instruments sound inconsistent depending on what frequency range they occupy: an unusually difficult profile to characterize or EQ around. Center-image focus never locked in properly regardless of listening position: traced to a measurable mismatch between the two individual speaker samples’ on-axis response, an unusual quality-control issue for a simple dome-tweeter design. A cancellation/lobing region just below the tweeter axis, likely from shallow first-order crossover slopes and some crossover-region overlap, means listening position needs to stay right at or slightly above tweeter level. Elevated multitone distortion in a region tied to a cone-edge/surround resonance (a known issue across several driver brands), only marginally improved by adding a subwoofer. Sample-to-sample driver measurements showed real inconsistency between the two review units’ tweeters and midwoofers. A cosmetic gap around the tweeter’s flush-mount cutout suggests room for tighter fit-and-finish. Discontinued.
Full Chesky LC1 review and specifications →
| Bass Extension (-10dB) | 49Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 71Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 10”H x 8”W x 10”D (254.0 x 203.2 x 254.0 mm) |
| Drivers | 1” tweeter + 4” woofer |
| Impedance | 8 ohms nominal (8.4 ohms minimum, measured, Erin’s Audio Corner) |
| Sensitivity | 81.4dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 3.21 |
| Spinorama Preference Score with Perfect Sub | 5.87 |
| Weight | 17.6 lbs (8 kg) |
| Woofer Cabinet | passive radiator |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons