Stereo Control Unit 305

TECHNICAL SPECIFICATIONS (Matched with 305 Stereo Main Amplifier)

Input sensitivities
Stereo or Monaural
•Pick-up: 4.4 m/V at 100KΩ ohms., RIAA curve with pre-set controls.
•Tape: 4.5 m/V at 100KΩ., CCIR curve.
•Radio: 100 m/V at 100KΩ.
•Aux: 100 m/V at 100KΩ., with pre-set controls.
Frequency Response
•Within 0.2 dB 30-20.000 cps (Hz) without filters.
Output per channel
•300 m/V.
Tape record output
•500 m/V., not affected by volume or tone controls.
Distortion
•Less than 0.1% total.
Controls
•Selector: for Tape, Radio, Gram , Aux.
•Function: for Stereo, Stereo reverse, Channel A, Channel B, Off.
•Volume: Ganged.
•Balance: To off, on each channel.
•Bass: Fully variable.
•Treble: Fully variable.
•Filter: Two position, 8 Kc (Hz) and 20 Kc (Hz).
High Pass Filter
•Fixed roll off at 30 cps (Hz) to reduce motor rumble.
Hum and noise
•Down 50 dB on all channels.
Consumption
•10 mA at 250V, and 1.5 A at 6.3V.
Finish
•Cast escutcheon and knobs finished in Black and Matt Gold. Cabinet metal plated and covered in Vinyl. Plated chassis. Fully tropicalised throughout.

In questo link sono elencati 8 modelli, di cui 1 con immagini e 1 con schemi.
Elenco delle radio e altri apparecchi della Chapman,C.T. (Reproducers) Ltd.; London