Ampex VR-1200
A broadcast quad VTR that stations bought by the dozen, and kept alive with third-party parts long after Ampex moved on.
Overview
The VR-1200 sits in a strange spot in Ampex's quad line. It was serious enough that stations built whole plant workflows around it, and common enough that the used market eventually treated it as a commodity. Ampex reported its turnaround for the fiscal year ending April 1973, and the annual report credited the VR-1200 series video recorders, along with the AVR-1 and ACR-25, as major contributors to the return to profit. This wasn't a niche machine. It was a volume product for the broadcast division.
The VR-1200 was a transverse-scan quadruplex recorder, part of the lineage that ran back to Ampex's original practical videotape machines. Studio Sound (December 1967, p.30) traced that line directly. It noted that the VR-1000 had used a rotating disc head assembly and that transverse-scan designs kept improving even as helical-scan machines began to dominate the market. The VR-1200 sat squarely in that transverse tradition. The magazine counted more than a thousand Ampex helical machines in service by late 1967 and still treated quad as the studio standard.
Look at the headwheel. The VR-1200 and its sibling VR-2000 used the Mark X high-band headwheel panel, and RCA, Ampex's biggest competitor, ran a factory reconditioning service for those very panels. RCA rebuilt them with its Alfecon II headwheel material. RCA's advertising claimed roughly 50 stations running the new material had passed 1000 hours of headwheel life, with one station reporting 3001 hours. The rework carried a maximum charge of $990 with a 200-hour warranty. When your competitor builds a business reconditioning your wear parts, the installed base is big.
The VR-1200 also spawned a small aftermarket. N.O.V.A. Corp. sold a directly installable audio record card, the AR-1200, for both the VR-1200 and VR-2000. It claimed lower distortion, lower noise, better headroom and high rejection of thumps, clicks, pops and dropouts during audio edits. The price was $295, and it was positioned explicitly as an upgrade over the original cards. B & M Electronics offered the BPS-1 remote burst phase shifter for the VR-1200 and VR-2000 series. It moved burst phase adjustment to the front panel with ±30° of shift and gain variation held to better than 2% across the range. Information Magnetics Corp. sold replacement audio, cue and erase heads with all-metal surfaces rated for longer life and more uniform frequency response than the originals. It also offered a conversion of a VR-1200 to VR-2000 spec by adding a second monitor head stack. Collectors note that this third-party support is part of the machine's appeal, since a VR-1200 can be kept running with parts and modifications designed specifically for it.
Ampex itself kept extending the line. The VR-1200C combined the VR-1200 series design with the editing capabilities of the VR-2000. An electronic videotape timer from Ampex permitted precise timing of recordings on VR-200 and VR-1200 series high-band color recorders, and it enabled remote control of other studio equipment. By the mid-1970s the VR-1200 was still earning its keep. One station profile described a facility where all three of its Ampex VR-1200 recorders were tied up during movie broadcasts until an ACR-25 cassette system freed one for backup and production work.
For performance, Studio Sound (September 1973, p.63) published figures for a quad machine of this class. Composite video input was 75 ohms, accepting 0.7 to 1.8V peak-to-peak. Sync ran from 1 to 8V. Tape speeds were 38 and 19 cm/s, with a 200 ms start from standby and 1 s from stop. Video frequency response was 25 Hz to 5 MHz ±2 dB in very high carrier mode. Treat those figures as representative of the series rather than a certified VR-1200 bench sheet.
By the early 1980s the secondhand market had spoken. A Studio Sound (November 1982, p.30) classified listing priced an Ampex VR1200B quad VTR at £9,500. That was real money, but a fraction of what these machines cost new, and it pointed to broadcasters retiring quad plants in favor of newer formats.
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