Zenith Facts!

World's Largest Bergen & McCarthy Collection in the Exhibition Gallery 
Oct 26
Radio Stratosphere

1000Z with it's Art Deco/Modern cabinet design. Zenith claimed in it's dealer material that the Stratosphere cabinet design was dictated by the basic principles of acoustics, just as that of the violin.

Wood inlaid set in matched American Butt Walnut closing doors with black lacquer accent painted trim.

1000Z with cabinet doors open with the cat in the Strat.

The Stratosphere was designed with a large black 9" airplane dial set in a hand casted Bronze Aztec design dial bezel. The 1000Z's black dial used a separate shadowgraph tuning meter helped listener with the fine tuning of stations. This multi-band dial is constructed of 5-layers of glass with each radio band etched in its own layer of glass with individually lighted tuning ranges. The radio dial tunes AM broadcast stations, Foreign; police, amateur, aviation and ships at sea.

The photo above is of the later 1000Z production pointer that matched the 1936 model line "Z" style pointer. Zenith produced a more ornate "Z" pointer with with enamel and maybe even gold plating on their earlier Stratospheres. Both versions had the station re-locator, white split second fine tuning pointer with dual tuning ratios.

1000Z Side view of the huge 50-1/2" high cabinet; 20-7/8" wide; 18-1/8" deep

Close-up of speaker cove with inlaid trim and Walnut burl. The side pilasters are made of solid Walnut and the cabinet trim and cove trim is made of Australian Laurelwood.

Greek Revival inlaid wood design set in a very figured Burl Walnut. The wood below is a straight inlaid line or African Satinwood with thin black trim set in Carpathian Elm Burl.

Zenith call its use of woods in the Stratosphere a symphony in rare woods. This is illustrated in the close-up photograph here of the flower inlaid design with imported marquetry.

Figured Carpathian Elm Burl


Walnut veneer found on the sides and top of the Stratosphere cabinet

1000Z rear view of the cabinet shows a large tuning chassis with tremendous tuning sensitivity, two 12" Jensen Concert A-12 dynamic low frequency speakers (Woofers), Jensen "Q" dynamic high frequency (horn tweeter) mounted on an electronic crossover box.

On the bottom of the large cabinet sits a 50 watt Duplex High Fidelity amplifier powered by a unique setup of eight 45 parallel push-pull power output tubes and three 5Z3 rectifiers tubes.

Rear copper screen back door provided what Zenith called elaborate shielding.

Heavy copper screen with Zenith name plate.

Zenith service manual, Stratosphere service bulletin and original Zenith dealer perpetual calendar from the 1940's

Above is a complete January 1935 set of Zenith Stratosphere advertising material with a letter from a factory representative to a prospective radio buyer