| GD-304 | |
| Rated power (100V): | 2.5W/5W/10W/20W |
| Rated power (70V): | 1.25W/2.5W/5W/10W/20W |
| Rated power (8Ω): | 20W |
| Max power: | 40W |
| Input： | 70V/100V/8Ω |
| (level of) sensitivity（1W/1M)： | 87dB±2dB |
| Frequency Response: | 90Hz-18KHz |
| Speaker unit: | 4''x1 0.75 x1 |
| Product Size (HxWxD)： | Φ137x188mm (Diameter) |
| Product weight： | 1.5KG |
| Protection level： | IP65(参照） |
| Packaging specification: | 4PCS/ctn |
| Housing Material: | ABS外壳+铝网 |
