[. . . ] [. . . ] 6 PCB Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7~8 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 9~10 EIGHT CHANNEL POWER AMPLIFIER RB-991 Specification Continuous Power Output - all channel driven (20-20 kHz, < 0. 05% THD) Total Harmonic Distortion (20Hz-20kHz, 8 ohms) Intermodulation Distortion (60 Hz : 7 kHz, 4:1) Frequency Response ( ± 1 dB) Damping Factor (20-20, 000 Hz, 8 ohms) Speaker Impedance Signal to Noise Ratio (IHF A network) Input Impedance Input Sensitivity Power Requirements USA: Europe: Power Consumption Dimensions (W x H x D) 40 watts/ch into 8 ohms < 0. 05% < 0. 03% 15Hz­100kHz 150 4 ohms minimum 110 dB 22 k ohms 1. 0 volt 115 Volts, 60 Hz 230 Volts, 50 Hz 400 W atts 432 x 121 x 432 mm 17 x 4 3/ 4 x 17 in 109 mm, 4 9/ 32 in 15. 1 kg, 33. 3 lb. Panel Height Weight (net) SHINSEN-BLD. Beginning Y-367A-0208/pdf Appearance RB-991 EIGHT CHANNEL POWER AMPLIFIER RB-991 A PROTECTION B C D CH - D LEVEL CH - A LEVEL CH - B LEVEL CH - C LEVEL POWER D INPUT R L LINK R INPUT L C INPUT LINK R L B INPUT LINK R L A SIGNALOUTPUT LINK R L IN OUT MODEL NO. Step Coupling R133 or R135 R134 or R136 R233 or R235 R234 or R236 R333 or R335 R334 or R336 R433 or R435 R434 or R436 Location X-1334-01 PCB X-1334-01 PCB X-1334-01 PCB X-1334-01 PCB X-1334-02 PCB X-1334-02 PCB X-1334-02 PCB X-1334-02 PCB Adjust VR103 VR104 VR203 VR204 VR303 VR304 VR403 VR404 Adjust for RB-991 1 2 3 4 5 6 7 8 DC milli-voltmeter Reads 4mV Case Outline 2SB817P 2SD1047P 2SC536K 2SA608K 2SA1016K 2SB631K 2SD600K PC817B 2SC1941 UPC1237HA 6 PCB Assembly -1 RB-991 016 X-1334A01-02 7 PCB Assembly - 2 016 X-1335B01-07 RB-991 8 Schematic Diagram -1/2 RB-991 9 Schematic diagram -2/2 RB-991 10 [. . . ] [. . . ]