Ampex MM-1200 Master Recorder/Reproducer

Message Board - AMPEX MM-1200 General Discussion

The Ampex MM-1200 Multichannel Recorder/Reproducer provides up to 24 channels of audio recording/reproducing capability using one-inch or two-inch audio recording tape. The 8-channel version uses one-inch tape and the 16- and 24-channel versions use two-inch tape.

The Ampex MM-1200 is capable of operating in any of three speeds; i.e., 7-1/2 in/s, 15 in/s and 30 in/s. When the associated PWA is properly strapped, any two adjacent speeds are front-panel selectable by means of a high/low speed switch. NAB and IEC (CCIR) equalization capabilities are also provided.

The Ampex MM-1200 provides the capability of recording on one or more channels simultaneously while monitoring one or more previously recorded channels. A Sel Sync* (Selective Synchronization) feature permits monitoring a previously recorded channel while recording in synchronization on one or more channels. This feature is enabled by using the record head of that previously recorded channel in a playback mode while one or more record heads are in the record mode.

The Ampex MM-1200 Recorder/Reproducer consists of a tape transport assembly, a transport control assembly, a frame assembly, a motor-drive amplifier assembly, a head assembly, audio electronics assemblies, a control box assembly, a power supply assembly, a meter panel assembly, an accessory panel, and an input/output panel assembly. Multi-pin connectors are used extensively between units to facilitate removal and replacement of various components and assemblies.

Foundational text courtesy of AMPEX Corporation MM-1200 Operations Manual.

Ampex mm1200

Ampex MM-1200 24-Track 2" Master Recorders/Reproducers - Fully restored by Steve Puntolillo of Sonicraft A2DX Lab - Photo courtesy of Steve Puntolillo

Ampex MM-1200 Tape Machine

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