| Model ID | 4311B Control Monitor |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 36.8 × 59.7 × 29.8 cm (W × H × D) |
| Weight | 46lbs |
| Frequency Response | 45Hz-15kHz ±3dB |
| Treble | 1.4" Paper Cone (Part #LE25-2) |
| Midrange | 5" Paper Cone (Part #LE5-10) |
| Woofer | 12" Paper Cone (Part #2213H) |
| Sensitivity (500Hz-2.5kHz) | 91dB/2.83V/m |
| Sensitivity | 42dB/1mW/30ft |
| Impedance (Nominal) | 8Ω |
| Crossover Frequencies | 1.5kHz, 6kHz (Network #3112B) |
| High Frequency Dispersion | 90° |
| Distortion (Half Power, 95dB/10ft, Single Frequency, 100Hz-15kHz) | <1% Third Harmonic |
| Power Handling (RMS) | 40W |
| Power Handling (Continuous Program) | 75W |
| Enclosure Type | Bass Reflex |
| Enclosure Volume | 40l |
| Finish | Textured Gray, Walnut |
| MSRP (1979) | $365/ea |
| Connections | - Input · Spring Terminal · Socket (Female)
|
| Controls | - Mid Frequency Level · Rotary Pot
- High Frequency Level · Rotary Pot
|
