A-51
Common name: ADK Microphones A-51
Production Status: Discontinued / Vintage
The A-51 condenser microphone is designed for use in studios, concert halls, and broadcast applications. It has wide frequency response, a smooth response curve, large dynamic range, and low distortion. The Type III A-51 mic now has a 3 to 6dB lower self noise than previous models and uses a precision 1 gold sputtered diaphragm, with discrete Class A FET electronics and a transformer-coupled balanced output.
Electrical Characteristics
                                            Frequency Response
                                        
                                        
                                        20Hz - 20                                            kHz
                                        
                                    
                                            Output Sensitivity
                                        
                                        
                                            15 mV/Pa
                                        
                                    
                                            Max SPL
                                        
                                        
                                            130
                                        
                                    
                                            Max SPL, THD:
                                        
                                        
                                            1
                                        
                                    
                                            Self Noise (CCIR)
                                        
                                        
                                             dB
                                        
                                    
                                            Self Noise (DIN/IEC)
                                        
                                        
                                            17 dB-A
                                        
                                    
                                            Output Impedance
                                        
                                        
                                            200Ω
                                        
                                    
                                            Recommended Load
                                        
                                        
                                            Powering
                                        
                                        
                                            
                                                                                Phantom 48 only
								                                            
                                        
                                    
                                            Supply Current
                                        
                                        
                                             mA
                                        
                                    
                                            Alternative Powering
                                        
                                        Switchable Options
                                            Pad
                                        
                                        
                                            Filter/EQ
                                        
                                        Physical Characteristics
                                            Connector
                                        
                                        
											                                            													XLR-3M												
                                        
                                    
                                            Connector notes
                                        
                                        
                                            Available Colours
                                        
                                        
                                            Weight
                                        
                                        
                                            470 g
                                        
                                    
                                            Length
                                        
                                        
                                            190 mm
                                        
                                    
                                            Min diameter width
                                        
                                        
                                            Max diameter
                                        
                                        
                                            50 mm
                                        
                                    
                                            Depth
                                        
                                        Accessories
                                            Included
                                        
                                        
                                            Optional
                                        
                                        