Designed for push-pull tube output circuits. Enclosed (shielded), 4 slot, above chassis Type 'X' mounting. Frequency response 30 Hz. to 30 Khz. at full rated power (± 1 db max. - ref. 1 Khz) minimum. Insulated flexible leads 8" min. Includes 40% screen taps for Ultra-Linear operation (if desired). Typical applications - Push-Pull: triode, Ultra-Linear pentode, pentode and tetrode connected audio output. Specifications Audio Watts (RMS) 15 W Primary Impedance 5,000 CT Ω Secondary Impedance 4/8/16 Ω Maximum DC per side 100 mA Mounting Centers 1.69" x 2" Mount Type