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SPECIFICATIONS
FREQUENCY RESPONSE PHASE RESPONSE HUM AND NOISE

IC 1 50

13

Hi-level: 0.6dB 3Hz-100KHz with hi-impedance load, 0.1dB 10Hz20KHz with IHF load; Phono: 0.5dB of RIAA Hi-level: typically +l to -12 20Hz-20KHz with IHF load; Phono: typically 5 20Hz-20KHz additional phase shift 20Hz-20KHz inputs shorted; Hi-level: 95dB below rated output (typically 105dB with IHF "A" weighted measurement); Phono: 85dB below 1OmV input (typically 0.3V input noise) Less than .002% at rated outputwith IHF load (typically under 0.001%) Less than .0005% @ 1KHz, max. .05% 20Hz-20KHz at rated output with IHF load Six hi-level inputs (1 tuner, 3 auxiliary, 2 tape), twoequalized phonos Hi-level: 20.8dB 0.2dB, 1OOK ohms nominal (25K ohms volume max.); Phono: 50-70dB (adjustable) 47K ohms. Sensitivity: < 1mV @ 1KHz for rated output at maximum gain 33-330mV at 1KHz, depending on gain (>1OOmV when set to 60dB total preamp gain) 12V maximum before overload, 2.5V rated, 600 ohms output impedance. Switched 0db to -1OdB pad affects both sets of outputs (Available at tape out jacks with input selector in phono) 600 ohms with typical maximum output of 11V RMS at 1KHz into hi-impedance load Stereo, 3 circuit " phone output, ahead of 0dB to -1OdB pad; output impedance 2.2K ohms each channel Precision switched attenuator of 58dB (and off) dynamic range with calibrated tracking within 0.2dB New wide-range design for excellent simulation of I.S.O. curves down to 60 phons; with exclusive dual R/C bass-boost coordinated with volume attenuator Unique, continuously-variable control for infinite adjustment from stereo to mono to stereo-reverse; replaces conventional stereo-mode switches and blend controls with an intuitive control of stereo spatial dimension Continuously variable 15dB at 30Hz and 15KHz, cancel switch bypasses independent bass and treble control settings to give instant true-flat response in both channels Uses reed relay - removes turn-on transients from IC-150A output, thus protecting speakers Rumble: -3dB at 24Hz with 6dB per-octave cut-off (volume attenuator at -2O), Scratch: -3dB at 5KHz with 12dB-per-octave cut-off Five switched with 25A switch, one unswitched About 2 watts at 120v or 240v 50-400Hz AC Five integrated circuits (equivalent to 89 bipolar transistors, 3 zeners, 12 diodes and 25 FETS) for a total of 96 bipolar transistors, 26 FETS, 4 zeners and 22 diodes 5" H x 17" W; 8 1/8" behind panel 10 Ibs., with walnut cabinet 20 Ibs.

DISTORTION IM DISTORTION THD INPUTS INPUT GAIN & IMPEDANCE

PHONO INPUT OVERLOAD MAIN OUTPUTS PHONO OUTPUT & IMPEDANCE

MONITOR OUTPUT VOLUME CONTROL LOUDNESS COMPENSATION

PANORAMA CONTROL

TONE CONTROLS

MUTING FILTERS AC OUTLETS POWER REQUIREMENTS SEMICONDUCTOR COMPLEMENT

DIMENSIONS WEIGHT

PARTS LIST, IC-150A Page 1

Schematic Designation

Description MAIN MODULE Main PC Board Switches

Crown Part # 41681 9627

Other Information

SW30A,B,C,D SW31A,B,C,D IC 130, 230 IC 30 K30 L130, 230 D30, 32 D33,34 D35,36 D31 D37,38

4 PDT Latching PB Integrated Circuits

3226

Loudness Control Tone Cancel

LF 356H FET-Op Amp RC 4195
Relay

4127 3825

5K ohms, DPDT, NC, reed
Coil

3496

12 mhy
Diodes 1N4148

1661

3181

lN961B, lOV, zener lN4003
Transistors

3549 2851

Q30 Q31 C130, 230 C131,231 C133,233 C134,234 C132, 232 C135, 235 C136,236 C137,237 C138,238 C30 C31, 34,35 C32,33

2N3859A, selected 2N5459, NCH, JFET
Capacitors .082 MF 1OOV

2961 3053

4133 4119

.47 MF 1OOV

.047 MF 200V mylar 25 MF 15V NP vertical .0015 MF 200V filmatic .015 MF 200V filmatic .068 MF 200V filmatic .22 MF 1OOV filmatic 5 MF 30V vertical 250 MF 35V vertical

3978 3186 3089 3288 3190 3218 4026 3787