Short answer: the Elac Carina BS243.4 on measured sound quality, the Sony SS-CS5 M2 on price. The Elac Carina BS243.4 ranks #16 of 87 bookshelf speakers at $1199. The Sony SS-CS5 M2 ranks #48 at $277.99, $921.01 cheaper.
What the Sony SS-CS5 M2 offers: Added internal bracing (corners, sides, front baffle) plus an updated crossover meaningfully reduce the resonance issues that plagued the original SS-CS5, giving a smoother, more neutral character overall. A modest mid-range dip (about 1-2dB) is present but tolerable, and the reviewer would rather have this dip than a peak in that region. Slightly deeper bass than the previous version, measuring about 2dB more output around 60Hz. Distortion drops noticeably when crossed to a subwoofer around 80-120Hz, meaningfully improving midrange clarity and detail versus running full-range. Easy to drive on a standard AVR - no need for a dedicated high-power amplifier. More modern, understated waveguide look compared to the previous version’s glossy trim. Watch for: Mild sibilance in the 3-5kHz range stands out on S and T sounds in vocals. Some forwardness in the midrange noticeable on certain vocal recordings. Soundstage and sense of envelopment are comparatively flat and two-dimensional, especially next to reference-quality speakers with strong 3D imaging. Marketed as a “three-way” design mainly due to an added super-tweeter that the reviewer considers largely superfluous - it engages only at very high frequencies and adds complexity without a clearly audible benefit, when that cost might have been better spent on the main crossover. Output-limited: realistic ceiling is around the mid-90s dB SPL at a few meters, with comfortable listening closer to 75-85dB at 3-4 meters before distortion and compression become audible. Bass noticeably compresses/shelves below about 120Hz as volume increases, softening kick-drum impact at higher output. Smaller drivers and a lighter motor structure than rivals like the Polk XT20, which the reviewer generally prefers for its better directivity and higher SPL capability. Still needs a subwoofer for any real bass extension.
What the Elac Carina BS243.4 offers: 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. Watch for: On-axis deviation (aad_on_axis 0.525) and listening-window smoothness (0.269) are middling for this batch - more ripple in the on-axis response than the pricier active options here. 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).
Buy the Sony SS-CS5 M2 when the price outweighs sound quality for you, and the Elac Carina BS243.4 when sound quality outweighs the price instead.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Sony SS-CS5 M2 | Elac Carina BS243.4 | |
|---|---|---|
| Price | $277.99 per pair | $1,199 per pair |
| Ranked | #48 of 87 in Medium Size Bookshelf Speakers | #16 of 87 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 54Hz (measured, Erin's Audio Corner) | 41.5Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 80Hz (measured, Erin's Audio Corner) | 55.7Hz (measured, spinorama.org) |
| Dimensions | 13.2"H x 7"W x 8.7"D (335 x 178 x 220 mm) | 8.5" x 12.6" x 9.6" (216 x 319 x 245 mm) each |
| Impedance | 6 ohms | 6 ohm nominal, 4.8 ohm minimum |
| Sensitivity | 82.5dB | 85dB (2.83V/1m) |
| Drivers | 5.12" woofer, 0.98 in tweeter; 0.75-inch supertweeter; 0.75-inch supertweeter; 0.75-inch supertweeter; 0.75-inch supertweeter | JET folded-ribbon tweeter, 5.25" aluminum cone woofer |
| Weight | 9.5 lbs (4.3 kg) each | 14.8 lbs (6.7 kg) each |
| Woofer Cabinet | ported, rear | Bass reflex |
| Spinorama Preference Score | - | 3.94 |
| Spinorama Preference Score with Perfect Sub | - | 6.07 |
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Prices on this page were last checked September 16, 2026 at 12:41 AM 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
Sony SS-CS5 M2: $277.99 per pair Amazon eBay
Pros: Added internal bracing (corners, sides, front baffle) plus an updated crossover meaningfully reduce the resonance issues that plagued the original SS-CS5, giving a smoother, more neutral character overall. A modest mid-range dip (about 1-2dB) is present but tolerable, and the reviewer would rather have this dip than a peak in that region. Slightly deeper bass than the previous version, measuring about 2dB more output around 60Hz. Distortion drops noticeably when crossed to a subwoofer around 80-120Hz, meaningfully improving midrange clarity and detail versus running full-range. Easy to drive on a standard AVR - no need for a dedicated high-power amplifier. More modern, understated waveguide look compared to the previous version’s glossy trim. Measured bass extension of 80Hz (-3dB).
Cons: Mild sibilance in the 3-5kHz range stands out on S and T sounds in vocals. Some forwardness in the midrange noticeable on certain vocal recordings. Soundstage and sense of envelopment are comparatively flat and two-dimensional, especially next to reference-quality speakers with strong 3D imaging. Marketed as a “three-way” design mainly due to an added super-tweeter that the reviewer considers largely superfluous - it engages only at very high frequencies and adds complexity without a clearly audible benefit, when that cost might have been better spent on the main crossover. Output-limited: realistic ceiling is around the mid-90s dB SPL at a few meters, with comfortable listening closer to 75-85dB at 3-4 meters before distortion and compression become audible. Bass noticeably compresses/shelves below about 120Hz as volume increases, softening kick-drum impact at higher output. Smaller drivers and a lighter motor structure than rivals like the Polk XT20, which the reviewer generally prefers for its better directivity and higher SPL capability. Still needs a subwoofer for any real bass extension.
Full Sony SS-CS5 M2 review and specifications →
| Bass Extension (-10dB) | 54Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 80Hz (measured, Erin's Audio Corner) |
| Dimensions | 13.2"H x 7"W x 8.7"D (335 x 178 x 220 mm) |
| Drivers | 5.12" woofer, 0.98 in tweeter; 0.75-inch supertweeter; 0.75-inch supertweeter; 0.75-inch supertweeter; 0.75-inch supertweeter |
| Impedance | 6 ohms |
| Sensitivity | 82.5dB |
| Weight | 9.5 lbs (4.3 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Elac Carina BS243.4: $1,199 per pair B&H Photo Video ELAC America eBay
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 deviation (aad_on_axis 0.525) and listening-window smoothness (0.269) are middling for this batch - more ripple in the on-axis response than the pricier active options here. 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 →
| Bass Extension (-10dB) | 41.5Hz (measured, spinorama.org) |
|---|---|
| Bass Extension (-3dB) | 55.7Hz (measured, spinorama.org) |
| 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 | 3.94 |
| Spinorama Preference Score with Perfect Sub | 6.07 |
| Weight | 14.8 lbs (6.7 kg) each |
| Woofer Cabinet | Bass reflex |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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