GRUNDIG small dynamic Late 1950s–Early 1960s - XLR

GRUNDIG GM 1WEST GERMAN INDUSTRIAL DYNAMIC MICROPHONE — CONVERTED TO XLR Built for communication. The Grundig GM 1 is a compact West German dynamic microphone from the post-war era, designed for applications where reliability and speech intelligibility were essential. Its small dimensions, distinctive red housing and brass grille give it a characteristic early industrial appearance. Today, it offers an interesting alternative for experimental recording and vintage speech effects. OPTICAL CONDITION Good vintage condition. The red housing shows visible surface marks and scratches consistent with age and use. The brass grille is intact, with natural patina. Original markings remain legible. TECHNICAL CONDITION Fully functional and tested. Converted to standard balanced XLR for use with modern recording equipment. BUILD & DESIGN The Grundig GM 1 features a compact red housing, fine brass mesh grille and a moving-coil dynamic capsule. Its small, solid construction reflects the practical requirements of communication equipment, with an emphasis on durability and straightforward operation. TECHNICAL FACTSHEET Manufacturer: Grundig Model: GM 1 Type: Dynamic, moving-coil Housing: Red phenolic-style material Grille: Fine brass mesh Design: Compact communication microphone Origin: West Germany Period: Post-war era Connection: Converted to XLR SOUND CHARACTERISTICS The GM 1 has a focused, mid-forward sound with limited low- and high-frequency extension. Its speech-oriented character makes it particularly interesting for talkback, lo-fi vocals, guitar amplifier textures and experimental recording. FREQUENCY RESPONSE Estimated useful bandwidth: approximately 350 Hz – 8–9 kHz Pronounced midrange presence Reduced bass and upper treble Strong emphasis on speech intelligibility Distinctive narrow-band vintage character Frequency range is an estimate based on practical testing, not a verified manufacturer specification. The Grundig GM 1 is a compact historical communication microphone with a distinctive appearance and a focused, characterful sound.