The Multiplex was an automobile built in Berwick, Pennsylvania by the Multiplex Manufacturing Company (today: Crispin Multiplex Manufacturing Company; Crispin Valve) from 1912 to 1913. The Multiplex was a sporty, upper-prized and large car equipped with a four cylinder engine, and offered as a Touring, a Roadster, and a Raceabout. A prototype "Sports" car with a 85 in (2159 mm) wheelbase, weighting in at just 980 lb (444.5 kg) and allegedly capable of a top speed of 126 mph (203 km/h) was also built.
The Multiplex 50 HP was claimed as the "highest expression of touring luxury". The car was developed by F. Bingaman in 1911, and offered for sale in 1912 and 1913 only. The wheelbase of the stock automobiles was 134 in (3404 mm), front tires were 38 × 4½ in, rear 39 × 5 in.
The engine was a Waukesha. It was a very large four cylinder unit with 5 in (127 mm) bore and 6 in (152 mm) stroke, giving it a volume of 471.2 c.i. (7722 cc.). It delivered 50 bhp, and with this bore, the car had a ALAM rating of 40 hp.
The Multiplex was claimed as the "highest expression of touring luxury", but only 14 cars were sold in two years, which can be blamed on the very high prices: $3125 for the raceabout, $3175 for the roadster, and $3600 for the touring car., thus putting the car easily in the luxury field. There, it met harsh competition by such prestigious makes like Lozier, Mercer, Packard, Peerless, Thomas, and many others. The prototype sports model had an envisioned price tag of around $4000.
The most remarkable success in motor sports was a victory in the Sealed bonnet road test, held by the Philadelphia Automobile Club in spring, 1913.
After the failure of the car, Multiplex Manufacturing returned to making valves, which it did since 1905. There was a brief try with a sports car in 1954, but only prototypes of the Multiplex-Allied 186 with a Willys F-head six cylinder engine and coachwork copied straightaway from the Cisitalia 202 were actually built.