Short answer: the KEF Q100. It ranks #38 of 56 bookshelf speakers by sound quality at $550; the Pioneer Elite SP-EBS73-LR ranks #51 and costs $749, so there is not much of a tradeoff to weigh.
What the KEF Q100 gets right: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. The catch: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction.
What the Pioneer Elite SP-EBS73-LR offers: Unique dual-driver design combines a front-facing 3-way speaker with an up-firing 2-way Dolby Atmos coaxial driver in one cabinet, designed by Andrew Jones. Watch for: A wide dip between 3-10kHz makes the front speaker sound “somewhat dull” without EQ, and impedance dips below 4 ohms demand a capable amplifier.
Buy the KEF Q100. It ranks higher for sound quality than the Pioneer Elite SP-EBS73-LR and costs less, so there is no real case for the other one.
If sound quality matters at all to you, skip the Pioneer Elite SP-EBS73-LR. It ranks near the bottom of the 56 bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| KEF Q100 | Pioneer Elite SP-EBS73-LR | |
|---|---|---|
| Price | $550 Discontinued | $749 pair, discontinued |
| Ranked | #38 of 56 in Medium Size Bookshelf Speakers | #51 of 56 in Medium Size Bookshelf Speakers |
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) | - |
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) | - |
| Discontinued | Yes | - |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) | 85dB (manufacturer specified) |
| Impedance | 8 ohms nominal | below 4 ohms minimum |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) | - |
| Drivers | 5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter | 5.25" aluminum-cone woofer, 2x 4" aluminum-cone midrange, 2x 1" silk dome tweeter (front 3-way + up-firing 2-way Atmos coaxial) |
| Weight | 13 lbs / 5.9 kg each | 15.7 lbs / 7.1 kg each |
| Dimensions | 11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm) | 15.7H x 7.4W x 9.7D in |
| Woofer Cabinet | ported, rear | - |
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The Two Speakers In Full
KEF Q100: $550 Discontinued
Pros: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive.
Cons: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction. Bass sensitivity drops to about 80dB and impedance falls below 4 ohms in the bass, demanding a capable amplifier. The reviewer heard boomy, buzzing bass that improved somewhat with the port plugged, and could not recommend it, calling the famous reputation more about looks than sound. Discontinued.
Full KEF Q100 review and specifications →
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) |
| Dimensions | 11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm) |
| Discontinued | Yes |
| Drivers | 5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
| Impedance | 8 ohms nominal |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) |
| Weight | 13 lbs / 5.9 kg each |
| Woofer Cabinet | ported, rear |
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- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Pioneer Elite SP-EBS73-LR: $749 pair, discontinued
Pros: Unique dual-driver design combines a front-facing 3-way speaker with an up-firing 2-way Dolby Atmos coaxial driver in one cabinet, designed by Andrew Jones. With corrective EQ applied, the reviewer found “substantially more brilliance and detail,” and the up-firing Atmos driver produced “remarkable” spatial effects from a single box.
Cons: A wide dip between 3-10kHz makes the front speaker sound “somewhat dull” without EQ, and impedance dips below 4 ohms demand a capable amplifier. Distortion is elevated at the crossover points, around 180Hz and 2600Hz. Amir concluded: “The hole in frequency response and high distortion around the crossover point rule out this speaker for any kind of hifi use, certainly at these prices.” Long discontinued.
Full Pioneer Elite SP-EBS73-LR review and specifications →
| Dimensions | 15.7H x 7.4W x 9.7D in |
|---|---|
| Drivers | 5.25" aluminum-cone woofer, 2x 4" aluminum-cone midrange, 2x 1" silk dome tweeter (front 3-way + up-firing 2-way Atmos coaxial) |
| Impedance | below 4 ohms minimum |
| Sensitivity | 85dB (manufacturer specified) |
| Weight | 15.7 lbs / 7.1 kg each |
As an eBay Partner, we may be compensated if you make a purchase.
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