Radio Broadcast (May 1927-Apr 1928)

Record Details:

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RADIO BROADCAST ADVERTISER REPRODUCTION Ami^M Presents a new complete I ij assembled audio unit tL AmerTran Push -Pull Power Amplifier *~pHE AmerTran Push-Pull Power Amplifier * is a new completely assembled two-stage l| unit. It contains a first stage AmerTran DeLuxe followed by AmerTran Input and Output Transformers for Power Tubes. When operated from a power source supplying sufficient voltage, (such as the \ new AmerTran ABC Hi-Power Box) the input to the speaker is almost perfect, and fidelity of reproduction is limited only by the ability of the speaker. Distortion, \ from tube harmonics and A C hum, is reduced to a minimum. The energy output to the speaker is increased, especially at the lower musical frequencies. This means greater clarity of tone at low or high volume. The amplifier is easily connected to the detector of any good receiver, replacing its audio amplifier. It is equipped with four sockets, two for power tubes, and a four-prong and a five-prong socket in the first stage for either a standard amplifying tube of the UX-201 A type, or a UY-227 AC tube. Using the latter tube, the amplifier can be entirely A C operated. AmerTran Push-Pull Amplifier as a complete unit is licensed under patents owned or controlled by the Radio Corporation of America and must be sold complete with tubes. It is built in several types, depending on the type of power tube preferred. Type 2 AP-10 is designed for 210 tubes and type 2 AP-71 for 171 tubes. The difference is only in the Push-Pull output transformers. This completely wired licensed AmerTran Push-Pull Amplifier is on display and demonstration at stores displaying the sign "Authorized AmerTran Dealer." Send for complete literature on this new AmerTran Unit. American Transformer Go. 178 Emmet Street Newark, N. J. "Transformer Builders for Over 26 Years" 1