The LOGProfessional Alpha ranks #17 out of 113 total Large Size Powered Bookshelf Speakers for sound quality. See all Powered Home rankings for every top pick.
Prices on this page were last checked October 7, 2026 at 9:25 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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#17 LOGProfessional Alpha: €11,560 per pair LOGProfessional eBay
Pros: Sound & Recording’s measurements show a 1.2dB response span from 300Hz to 5kHz and a 8.26 ideal-subwoofer score. This supports a particularly even midrange and makes the Alpha a promising choice for a system with properly integrated bass support.
Cons: The measured -3dB point is 67.1Hz, making a subwoofer important for full-range listening. A smooth midrange is not proof of high clean output or uniformly controlled dispersion.
| AES Input | No |
|---|---|
| Amplifier Power | 2x 70W Class A/B |
| Aux Input | No |
| Bluetooth | No |
| Coaxial Input | No |
| Country | Graz, Austria |
| Dimensions | 13.4”W x 8.7”H x 8.7”D (340 x 220 x 220 mm) |
| Drivers | 1” dome tweeter, 6.5” bass-midrange woofer |
| Enclosure | 2-way active, bass-reflex, low-vibration housing |
| Frequency Response | 32Hz - 22kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | Digital and analog XLR, 192kHz/24-bit DSP |
| Maximum SPL | 112dB (manufacturer specified) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 5.92 |
| Spinorama Preference Score with Perfect Sub | 8.26 |
| TRS Input | No |
| USB Input | No |
| Weight | 15.4 lbs (7 kg) each |
| XLR Input | Yes |
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