C 28
Common name: AKG C 28
Production Status: Discontinued / Vintage
The C 28 is a classic axial condenser design dating from the 1950s. The preamplifier can be fitted with a CK 28A cardioid or less usually a CK 26A omni capsule. Slim VR29 and VR30 tubes allow the capsule to be extended 33 cm or 100 cm. The N 28A power supply is mains powered and can be mounted 20 m from the preamplifier (Mk 28 cable). Designed as a general-purpose studio microphone it was the mainstay of television and recording studios for many years. Frequency response shown is with CK 28 cardioid capsule.
Electrical Characteristics
                                            Frequency Response
                                        
                                        
                                        30Hz - 18                                            kHz
                                        
                                    
                                            Output Sensitivity
                                        
                                        
                                            4 mV/Pa
                                        
                                    
                                            Max SPL
                                        
                                        
                                            117.5
                                        
                                    
                                            Max SPL, THD:
                                        
                                        
                                            1
                                        
                                    
                                            Self Noise (CCIR)
                                        
                                        
                                            20 dB
                                        
                                    
                                            Self Noise (DIN/IEC)
                                        
                                        
                                             dB-A
                                        
                                    
                                            Output Impedance
                                        
                                        
                                            -
                                        
                                    
                                            Recommended Load
                                        
                                        
                                            0.5kΩ
                                        
                                    
                                            Powering
                                        
                                        
                                            
                                                                                Proprietary unit
								                                            
                                        
                                    
                                            Supply Current
                                        
                                        
                                            Plate 0.7 mA
                                        
                                    
                                            Alternative Powering
                                        
                                        
                                                Tube Model
                                            
                                            
                                                6072A - 12AY7
                                            
                                        Switchable Options
                                            Pad
                                        
                                        
                                            Filter/EQ
                                        
                                        Physical Characteristics
                                            Connector
                                        
                                        
											                                            													5-pin												
                                        
                                    
                                            Connector notes
                                        
                                        
                                            on PSU
                                        
                                    
                                            Available Colours
                                        
                                        
                                            Weight
                                        
                                        
                                            200 g
                                        
                                    
                                            Length
                                        
                                        
                                            174 mm
                                        
                                    
                                            Min diameter width
                                        
                                        
                                            Max diameter
                                        
                                        
                                            26 mm
                                        
                                    
                                            Depth
                                        
                                        Accessories
                                            Included
                                        
                                        
                                            Optional
                                        
                                        