Pony P.A. Amplifier 10651

Particularly suited for use as a phonograph amplifier, telephone booster, intercommunicating or small P.A. Systems. Has gain of 8 dB more than 2B6 amplifier but does not have as great a power output—not as broad a frequency response. 

Characteristics and Specifications:

3.5 Watt 2A5 Watt  Amplifier:

1. Power Output to Speaker Voice Coils: 3.5 watts for 2A5 Model.
2. Supply field current for one 2500 ohm field speaker.
3. Two stages with three tubes.
4. 52 dB gain with 2B6; 60 dB gain with 2A5.
5. Practically Flat Frequency Characteristic Curve within. 3 dB from 50 to 8000 cycles.
6. Input impedance 400 ohms center tapped for microphone. 50,000 ohms for phono pickup and other inputs.
7. Dual Volume Controls and Mixer, etched metal plate.
8. Combination Tone Control and on-off switch.
9. Output Impedances 7000 ohms from plate of 2A5.
10. Only .1 volts input signal required for maximum output.
11. Hum level lower than in average good quality A.C. Radio.
12. Power Consumption 45 watts.
13. Power Supply required, 105-120 volts, 50-60 cycles A.C.
14. Six foot super service power connection cord with unbreakable rubber attaching plug.
15. Bottom protecting plate with four rubber feet entirely encloses base.
16. Rich baked-on black enameled finish.
17. Overall height 6.75" ; base, width 7", length 11", height 2.375".

Price listed with tubes.

In questo link sono elencati 358 modelli, di cui 272 con immagini e 66 con schemi.
Elenco delle radio e altri apparecchi della Radolek Co., Chicago