| AL-51 | AL-51T | |
| Rated power (100V): | 15W/30W | 3.75W/7.5W/15W/30W |
| Rated power (70V): | — | 1.8W/3.75W/7.5W/15W/30W |
| Rated power (8Ω): | — | 30W |
| Max power: | 60W | 60W |
| Input： | 100V | 70V/100V/8Ω |
| (level of) sensitivity（1W/1M)： | 90dB±3dB | 90dB±3dB |
| Frequency Response: | 100Hz-12KHz | 100Hz-12KHz |
| Speaker unit: | 4.5''x1 | 4.5''x1 |
| Product Size (HxWxD)： | 165 x358x320mm | 165 x358x321mm |
| Colour： | light green | light green |
| Product weight： | 2.73KG | 2.83KG |
| Protection level： | IP55(参照） | IP55(参照） |
| Packaging specification: | 4pcs/ctn | 4pcs/ctn |
| Package sizemm | 460×390×805 | 460×390×805 |
| Housing Material: | Plastic case + iron mesh cover + iron stand | Plastic case + iron mesh cover + iron stand |
