B-300 Concerto IV (Moorish)
| Brand | Bozak |
| Manufacturer | R.T. Bozak Co. |
| Series | Concert |
| Designer | Rudy Bozak |
| Function | Speaker |
| Produced | 1970-1974 |
| Country | United States |
| Form Factor | Floorstanding |
| Signal Path | Passive Hardware |
| Dimensions | 68.6 × 76.2 × 40.9 cm (W × H × D) |
| Weight | 90lbs |
| Frequency Response | 40Hz-20kHz |
| Treble | 2" Aluminum Cone (x2) (Bozak B-200Y) |
| Midrange/Bass | 12" Wool-Paper Multi-Fiber Cone (Bozak B-199A (B-207A Coaxial)) |
| Impedance (Nominal) | 8Ω |
| Crossover Frequency | 2.5kHz |
| Crossover Slope | 6dB/Oct (First Order) |
| Finish | Walnut |