Short answer: the Genelec 8351B for better sound quality, the Focal Alpha 65 EVO for the lower price. The Genelec 8351B ranks #6 of 40 powered bookshelf speakers at $9150. The Focal Alpha 65 EVO ranks #16 at $499, $8651 cheaper.
What the Genelec 8351B gets right: CEA2034 spinorama shows exceptionally flat response both on- and off-axis. The catch: Deep bass distortion rises substantially at higher output (96dB SPL/1m) - the reviewer notes “deep bass suffers” below about 100Hz.
On the Focal Alpha 65 EVO side: Very neutral, not quite as good as the Klasik 2020 in the midrange, but with better soundstage and instrument definition than the HS8. Set against that: Ignores sub-bass, and the LF/HF trim dials lack a center detent so getting back to flat takes trial and error.
Buy the Genelec 8351B if sound quality matters more than the price. Buy the Focal Alpha 65 EVO if the price matters more than sound quality.
Specifications Side By Side
| Genelec 8351B | Focal Alpha 65 EVO | |
|---|---|---|
| Price | $9150 | $499.00 |
| Ranked | #6 of 40 in Large Size Powered Bookshelf Speakers | #16 of 40 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-10dB) | 28Hz (measured, Audio Science Review) | 36Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 33Hz (measured, Audio Science Review) | 45Hz (measured, Audio Science Review) |
| Dimensions | 17"H x 11.3"W x 10.9"D (431.8 x 287 x 276.9 mm) | 13.4"H x 10.3"W x 11.4"D (340.4 x 261.6 x 289.6 mm) |
| Inputs | XLR | TRS, XLR, RCA |
| Weight | 31.1 lbs / 14.1 kg each | 16.8 lbs / 7.6 kg each |
| Drivers | 8.6" woofer, 5" coaxial with tweeter midrange, 0.75" (19mm) coaxial tweeter | 6.5" (165mm) woofer |
| App | Yes (GLM) | No |
| Bluetooth | No | No |
| DSP | Yes | No |
| EQ | Yes (via GLM software) | Yes (Room adjustment) |
| Frequency Response | 32Hz - 40kHz (±1.5dB) (Manufacturer specified) | 40Hz - 22kHz (+-3dB) (Manufacturer specified) |
| Max SPL | 113dB @ 1m | - |
| Output Power | 550w Per Speaker | 85w Per Speaker |
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The Two Speakers In Full
Genelec 8351B: $9150 Bhphotovideo
Pros: CEA2034 spinorama shows exceptionally flat response both on- and off-axis. Predicted in-room response is “as good as it gets” - should sound very neutral in nearly any room. Horizontal beamwidth of about ±50 degrees is described by the reviewer as exceptionally smooth, a model example of well-executed directivity control. Vertical directivity is nearly as good as horizontal, a benefit of its coaxial driver design that’s rare among non-coaxial monitors. Distortion at 86dB SPL/1m is remarkably low - the reviewer says it’s “better than many headphones.”
Cons: Deep bass distortion rises substantially at higher output (96dB SPL/1m) - the reviewer notes “deep bass suffers” below about 100Hz. A distortion spike also appears near 8-10kHz at that same higher output level. Cumulative spectral decay (waterfall) measurements show resonances around 1-2kHz. Very expensive.
Full Genelec 8351B review and specifications →
| App | Yes (GLM) |
|---|---|
| Bass Extension (-10dB) | 28Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 33Hz (measured, Audio Science Review) |
| Bluetooth | No |
| DSP | Yes |
| Dimensions | 17"H x 11.3"W x 10.9"D (431.8 x 287 x 276.9 mm) |
| Drivers | 8.6" woofer, 5" coaxial with tweeter midrange, 0.75" (19mm) coaxial tweeter |
| EQ | Yes (via GLM software) |
| Frequency Response | 32Hz - 40kHz (±1.5dB) (Manufacturer specified) |
| Inputs | XLR |
| Max SPL | 113dB @ 1m |
| Output Power | 550w Per Speaker |
| Weight | 31.1 lbs / 14.1 kg each |
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- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Focal Alpha 65 EVO: $499.00 Amazon
Pros: Very neutral, not quite as good as the Klasik 2020 in the midrange, but with better soundstage and instrument definition than the HS8
Cons: Ignores sub-bass, and the LF/HF trim dials lack a center detent so getting back to flat takes trial and error. The reviewer’s original sample showed an odd distortion spike between 1.5-8kHz at 86dB SPL, though a second sample from Focal didn’t reproduce it - likely a defective unit rather than a design flaw.
Full Focal Alpha 65 EVO review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 36Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 45Hz (measured, Audio Science Review) |
| Bluetooth | No |
| DSP | No |
| Dimensions | 13.4"H x 10.3"W x 11.4"D (340.4 x 261.6 x 289.6 mm) |
| Drivers | 6.5" (165mm) woofer |
| EQ | Yes (Room adjustment) |
| Frequency Response | 40Hz - 22kHz (+-3dB) (Manufacturer specified) |
| Inputs | TRS, XLR, RCA |
| Output Power | 85w Per Speaker |
| Weight | 16.8 lbs / 7.6 kg each |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements
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