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A beautiful vintage mic which will always be associated with The Beatles. Original features: a brushed alloy body and adjustable "hinged" rectangular head.

FEATURES
• Original period microphone casing
• pivoting head for accurate positioning
• selectable impedance by choice of cable sets

TECHNICAL SPECIFICATIONS
Transducer type . . . . . . . . . . .  miniature ribbon
Frequency response . . . . . . .    70 - 12000 Hz
Polar pattern . . . . . . . . . . . . . . Figure of 8 (modification possible to single side pick up)
Nominal impedance. . . . . . . . . RBL: 30-50 Ohms
Sensitivity. . .......... . . . . . . . ..  not known
Weight w/out cable. . . . . . . . .  240g

HISTORY
Approximate year of manufacture 1959. This was originally designed as a microphone for recording. The ribbon was very sensitive and easily damaged by loud singing or blowing into the microphone. However, close-up vocal use was made possible by inserting felt "acoustic correction pads" into the head. The felt pad gave a degree of bass reduction and protection for the ribbon. An additional yellow fabric insert at the rear of the head altered the pick up characteristic from Figure of 8 to single side making it less susceptible to feedback and more suitable for PA use.

Other variations of the RB included:
RBH with an impedance switch - 30 Ohms or Hi-Z
RB/T with a die cast tubular mounting containing the line transformer and connecting socket.
RB/TS as above but longer to accommodate a sliding on/off switch.
RB/W with an oval die cast mounting containing the transformer and connection socket with separate ½" tapped hole for stand mounting.
RB/WS as above but with a rotary on/off switch in the stand mounting position.
RBS alternative impedance choice 30-50 and 1000 Ohms.
RBY alternative impedance choice 30-50 and 10000 Ohms.