The LOGProfessional Alpha ranks #48 out of 57 total Large Size Powered Bookshelf Speakers for sound quality. See Top Recommended Speakers By Attribute for all the top speaker suggestions.
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#48 LOGProfessional Alpha: €5,780 each LOGProfessional eBay
Pros: A low-vibration Class A/B active monitor hand-built in Graz, Austria, with 192kHz/24-bit DSP and both digital and analog XLR inputs. On-axis deviation of just 0.17dB is tight for a 2-way this size, with a nearly flat tonal balance (a -0.02dB per octave tilt).
Cons: Listening-window smoothness (0.503) and especially sound-power smoothness (0.243) are rough for the price, with a directivity-index standard deviation of 3.43 showing inconsistent dispersion control and a predicted in-room smoothness of just 0.37. It’s an obscure boutique brand with no independent reviews found and no US dealer network, sold only direct from Austria.
How it compares: Just above it: KRK Rokit 7 G4. Just below it: Kali Audio LP-8 V2.
| 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 |
| Inputs | Digital and analog XLR, 192kHz/24-bit DSP |
| Max SPL | 112dB |
| Power Output | 2x 70W Class A/B |
| Weight | 15.4 lbs / 7 kg each |
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