Rek-O-Kut Imperial II

 The Imperial II records directly onto disc from a variety of program sources - AM and FM radio, tape, live performances and record to disc. The equipment is housed in 2 portable vinyl-covered cases. Rek-o-Kut's SPK-44 may be used with the Imperial II for general sound amplification or playback.

The Imperial II consists of:

Model TR-43H :  Three-speed recording turntable

Model R8B :  new 20 watt, low noise, transitorized recording amplifier.

Model M-12S :  Overhead lathe

Model RH-5 :  Newly designed wide range recording head.

Model S-120 :  High fidelity tonearm.

 Recording amplifier Model R8B offers the following advantages:

A compact and versatile combination of three separate transistorized preamplifiers and 20-watt power Amplifier.

Choice of mixing or separate use of three outputs from Microphone, Tape and Phono Preamplifiers, as desired.

Specially designed tone controls for exact compensation of recording equalization or playback.

Individually selected, low-noise transistors for low signal-to-noise ratio in recording and playback.

Specifications of Imperial II

Record Cutter and Playback Unit

Motor:  Hysteresis Synchronous motor fitted with lamitex drive pulley. Suspended in shock mounts to prevent transmission of motor vibration.

Recording Area:  Records from 6" up to 13¼"

Speeds:  Simple, finger-tip speed control.  Records at both 33⅓ and 78 rpm. Includes idler and adapter for 45 rpm recordings

Overhead Recording Lathe:  Model M-12S Lathe.

Hand Crank for run-in and run-off spiral grooves.

Provision for Interchanging leadscrews for Standard and Microgroove.

Equipped with standard 120 line leadscrew, Liftomatic Safety Cam prevents double cutting stylus damage. Automatically raises cutter as center of disc is approached.

Calibrated Scale for Timing

Recording Head:  Model RH-5 response from 30 -13,000 Hz

Playback Arm:  Model S-120 for records up to 13¼" - with magnetic cartridge

Recording Amplifier Unit - R8B

Output:  20 watts

Response:  20 to 20,000 Hz ±2 dB (at full output)

Harmonic Distortion:  0,32% at 1,000 Hz (at full output)

Intermodulation Distortion:  0,8%

Hum Level (below rated output):

Tape :  60 dB

Mike :  64 dB

Phono :  61 dB

Inputs:  Microphone; Tape and Phono (mixing); Tuner (high level)

Preamplifier sections completely transistorized

Mike Preamplifier

Input Impedance:  10,000 Ω

Sensitivity:  3,25 mV

Power gain:  102 dB

Distortion: less than 1%

Noise:  -65 dB below rated output

Tape Preamplifier

Input Impedance:  High impedance head

Sensitivity:  2,17 mV

Power Gain:  104 dB

Distortion:  less than 1%

Frequency Response:  50 to 15,000 Hz ±2 dB, equalized for NARTB

Noise:  -55 dB (below rated output)

Phono Preamplifier

Input:  magnetic, high impedance

Sensitivity:  4,75 mV,  equalized for RIAA

Power Gain:  99 dB

Distortion:  less than 1%

Noise:  -59 dB (below rated output)

Tuner Input:  Accepts all std. AM and FM Tuners

Controls:

Phono, Microphone and Tape Level;

Master Volume;

Bass Control (±22 dB at 50 Hz)

Treble Control (±20 dB at 15 kHz)

Playback-Recording switch;

Power switch.

Recording Level Indicator:  Damped volume unit type meter with special calibrated scale.

Outputs:

Speaker and Cutter (16, 8 and 4 ohms);

Monitor (for use with high impedance headphones);

Pre-amp (2,000 Ω).

Tubes:  2 - 6973; 1 - 6AN8

Transistors:  3 - 2N408; 5 - 2N 406

Rectifiers:  1N2071 Silicon

Powe Requirements:  115 watts;  117 V AC, 50/60 Hz

Leatherette covered carrying cases with storage lid and handle.

Dimensions (W x H x D)

R8B Amplifier :  20½ x 7 x 10 inches

Recorder :  20½ x 14 x 18 inches

Weight:

R8B :  25 lbs

Recorder :  45 lbs