The talking machine world (July-Dec 1928)

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The Newest in Radio istics and complete elimination of microphonic noises. Deforest 110, power amplifier for socket-power sets and amplifiers. Is highly evacuated with active getter constantly present to insure a "hard" tube for high-plate voltage and quiet operation. Special filament for maximum emission and long life. Oxidecoated filament. DeForest 112-A, detector, amplifier and power amplifier. Highly evacuated with active getter to maintain high vacuum. Oxide-coated filament mica spacer. DeForest 150, a super-power amplifier, highly evacuated with active getter always present. Has special ribbon filament with oxide coating for high emission and long life. Mica spacer. DeForest 4S1, a half-wave, heavydutv rectifier of 110-milliampere, 425volt output. Has special DeForest ribbon type filament with heavy oxide coating. Findlay Model for Apex Robert Findlay Mfg. Co., Brooklyn, N. Y. Three metal tables designed especially for the Apex Model 36 and Fada Models 11 and 50 AC receiving Findlay Model for Fada II sets. The Apex table is finished in walnut and bronze with provision being made to suspend the Apex loud speaker in the console of the table. The tables for the Fada receivers are Findlay Model for Fada 50 designed In Gothic style and finished in an attractive brown and bronze. The loud speaker, with an attractive grille and metal housing, is built in the console of the table. walnut, finished with four coats of hand-rubbed lacquer. Each receiver is equipped with phonograph Jacks which allow it to be used for the electrical reproduction of phonograph records. Muter Dynamic Type 4S10 Leslie F. Muter Co., Chicago. Muter dynamic speaker unit, type 4310, for use with 110-volt alternating current. Equipped with Westinghouse Rectox dry rectifier unit and special Muter step-down transformer. Manufacturer states normal line voltage fluctuations do not affect speaker operation. All working parts completely Muter Table Model encased. Each unit provided with 8foot lamp cord and switch. List price, $39.50. Muter dynamic speaker unit type 4306 is designed for use with storage battery or external trickle charger. Operates at from 6 to 12 volts. List price, $29.50. Muter dynamic speaker unit type 4390, designed for use with power amplifiers, heavy duty B eliminators, etc. It is the same as type 4306 and 4310 except that the field has a resistance of approximately 2,500 ohms, and should be supplied with 90 to 135 volts DC. List price, $33. Muter dynamic table type speaker. Cabinet of solid walnut, supplied with any one of the three types of unit described above. List price, types 4406, 6 volts DC operation, $44.50. Type 4490, 90 volts DC operation, $48. Type 4410, 110 volts AC operation, $54.50. Bremer-Tully 8-22 Bremer-Tully Mfg. Co., Chicago, 111. Model 8-22 radio-phonograph combination, containing the B-T 8-20 eight-tube receiver, employing five tuned stages, patented Counterphase circuit, station indicator, rejector stage and built-in dynamic speaker. Phonograph is operated by electric motor, and turntable is conveniently located for changing of records. Two 210 tubes employed in the output. Cabinet of walnut, with figured, matched burl doors, decorated with Carpathian elm. Height 48 inches, width 28% inches. Operates from 110-volt AC current only. Price, less tubes, Pathe Phonograph & Radio Corp., New York. Gothic model cabinet type speaker listed at $28; dynamic type 100-volt AC speaker, listing at $70. Both models are finished in genuine walnut. Magnetic chassis No. 3 for installation In cabinets, listing at $16, and a dynamic demonstrator with electric turntable at $140, in oak or dark red finish, and $150 in walnut. The prices for this dynamic demonstrator, with Pathe Gothic Speaker out electric turntable and in the finishes named, are $120 and $125, respectively. Colonial Radio Corp., Long Island City, N. Y. DC electric receiver (companion to Model 31 AC receiver) containing an antenna coupling stage, two high-gain tuned radio frequency stages, detector and first audio-frequency stages, all utilizing UX-226 or CX-326 tubes; second audio-frequency stage is in the power speaker unit and uses two UX-171A or CX-371A tubes. Set and Cutting dynamic power speaker are housed in console cabinet. Refinements include single-dial tuning, full-vision control panel, antenna compensator, phonograph pick-up jack, all-steel chassis and complete shielding. Rudiart Laboratories, Inc., Cleveland, O. Adjustable step-down transformer with which the AC receivers and eliminators manufactured in the United States are made applicable for use in all the foreign markets. Is equipped with a special four-point switch which is connected to the tapped primary winding. It is thoroughly insulated from the transformer and positive in action. The switch is readily accessible and full instructions are given on the nameplate that is on each transformer. Two models are required to cover the range of 130 to 250 volts. One is wound to convert either 130, 150, 170 or 190 volts to 110 volts; the other to convert either 200. 220, 240 or 250 volts to 110 volts. Each transformer is supplied on the primary side with eight feet of cord and connecting plug for connecting to the power supply line. The 110-volt secondary side is equipped with two feet of cord and special receptacle so that the connecting cord to the appliance can be readily plugged into this receptacle just as if it were a standard wall receptacle. The transformers are totally enclosed and the windings are impregnated to protect them against moisture. Bushings protect the cord entering the enclosing container, and all leads are enclosed. Je9se French & Sons, New Castle, Ind., one of the oldest and most prominent manufacturing organizations In the piano industry, recently entered the radio field, introducing three radio receivers. The line includes one table model, the Seville, the Seville consolette and the Barcelona console. Each model contains the same radio chassis, which is an eight-tube AC receiver, with one rectifier tube. The set employs push-pull amplification and uses two 171-A power tubes. The consolette and console models are equipped with built-in speakers, and a purchaser may have the choice of a Rola magnetic loud speaker or a Utah dynamic speaker. The cabinets are of figured Crosley Radio Corp., Cincinnati, O. Dynacone adapter plug that makes possible the use of the Dynacone power speaker with sets other than those of Crosley manufacture is placed in the last tube socket and the tube is placed in the plug. The regular output terminals for the loud speaker are shorted and the type E Dynacone plugged into two pin jacks provided on the adapter. By this means the output condenser and choke or the output transformer are eliminated from, and the Dynacone put directly in, the output circuit of the last tube. Thus it gets the DC current to take care of energizing the electro-magnet in the speaker as well as the regular pulsating current which actuates the speaker itself. By use of the Dynacone adapter plug it is possible to use this power speaker with all sets equipped with 171-A output tubes using 135 or more volts on the plate or on receivers having an output with a plate current of 20 milliamperes. Name Freshman Freed-Eisemann Directors Successive directors' meetings of the Chas. Freshman Co., Inc., and the Freed-Eisemann Radio Corp., held recently, have caused the election of officials of both concerns to the directorates of each, thus completing the final step in the unification of the two companies. C. A. Earl, president of the Chas. Freshman Co., at the conclusion of the directors' meeting of that company, announced that Jos. D. R. Freed and Arthur Freed had been made directors and vice-presidents in the Freshman Co. Jos. D. R. Freed, president of the Freed-Eisemann Radio Corp., after a meeting of his directorate, announced that five directors of the Chas. Freshman Co. had been elected to the board of the Freed-Eisemann firm. The five are Mr. Earl, W. J. Keyes, Millard Tompkins, Edgar Miller and S. P. Woodard. Mr. Earl heads the board. A formal statement signed by Mr. Earl and Jos. D. R. Freed states that the identity of both organizations will remain unchanged . . . that both the Freshman and Freed-Eisemann lines will be manufactured and sold as heretofore . . . that this combination of two of the leading radio manufacturers will add materially to the strength of each and will make possible a greater and more comprehensive service. RCA Southern Dealers at Dinner Meeting An informal dinner meeting of RCA distributors and dealers, held in the Georgian ballroom of the Atlanta Biltmore Hotel, Atlanta, Ga., on December 12, proclaimed the opening of executive, sales and service facilities for products of the Radio Corp. in the Southern territory. Pierre Boucheron, formerly general advertising and publicity manager of RCA, who was recently appointed Southern district sales manager, was host to the gathering. Among the RCA officials who attended this housewarming party were J. L. Ray, vice-president and general sales manager; C. S. DeSousa, treasurer; E. A. Nicholas, manager Radiola division, and Meade Brunet, manager Radiotron division. As this issue of The Talking Machine World goes to press, announcement has been received from A. H. Grebe & Co., Inc., New York, of a reduction in price of the Grebe Synchrophase AC-6, which formerly listed at $227.50 and is now listed at $197.50. 107