1949 - AMPEX ROLL AROUND CART/RACK FOR MODEL 300 TAPE RECORDER

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USED AMPEX ROLL AROUND CART / RACK FOR MODEL 300 TAPE RECORDER
This
Ampex 300 tape recorder roll-around cart / rack was purchased from Bernie Grundman and Michael Hobson of Classic Records in the late 90s.
This sheet metal cart has some cosmetic issues as you can see in the photos but everything is complete and intact, door fits tight, it's ready for a paint job.
This ad is for the
65” x 28” by 25”
roll-around cart only. It does not include the Ampex 300 which is shown in the photos. The model 300 tape deck is listed separately.
I prefer pick up of the cart in San Francisco but I can deliver to any Bay Area location for a minimal fee. Shipping arrangements from San Francisco to any other location must be made by the buyer, who would probably need to contract with a freight company.
The roll-around cart is too tall to ship internationally via USPS, UPS or DHL but a freight forwarder would be able to handle it.
The first production Model 300 was shipped in the late spring of 1949
.
At the time all performance characteristics of the Ampex Model 300 Magnetic Tape Recorder equalled or exceeded the standards of the National Association of Radio & Television Broadcasters. All Ampex audio recorders reproduced a tape frequency characteristic which had been accepted as standard by the NARTB.
Harold Lindsay designed the mechanical parts and Frank Lennert designed all of the electronics of the Ampex Model 300,
including the record/playback electronics.
It used 10.5 inch reels, 1/4-inch tape facing inward, and was a two-speed machine switchable to either 7.5 or 15 ips.
Harold designed a new head that, when compared to the one for the 200A, was less expensive, performed better and was more uniform from head to head.
The new head made tapes more easily interchangeable from machine to machine than was possible between 200A recorders.
A 15/30 ips version, the Model 301, was introduced shortly after that. The 300 transport became the platform for many versions of both audio and instrumentation recorders. Overall about 20,000 of these transports were produced.
Tapes were not interchangeable between the 200A and the 301 due to several factors. First, the tape on the 200A had the oxide facing outward, whereas on the 301 it faced inward. Second, the record equalization was different, and the 301 was designed to use 3M 111 tape instead of 3M 112 tape that the 200A used.
The Model 301 had better frequency response, lower noise, and lower flutter than the 200A. Sales of the Models 300 and 301 quickly outstripped those of the 200A, which was soon phased out; in the end, a total of  only 112 Model 200A recorders were manufactured and shipped.