Pioneer SX-7730 (35W/Ch)

Filter Caps Replaced

Speaker Terminals Upgraded to Banana Plugs

Lamps Replaced with LEDs

Fully Tested and Cleaned

Specifications:
Amplifier Section

Continuous Power Output
Both channels driven 20Hz-20kHz 35W + 35W into 8Ω
40W + 40W into 4Ω
Harmonic Distortion 0.5%

Intermodulation Distortion 0.5%

Output Speaker
Headphones A, B, A + B, 4Ω-16Ω

Low Impedance
Damping Factor (1kHz, 8Ω) 40

Input Sensitivity/Impedance
PHONO, MIC
AUX, TAPE PB 1,2
TAPE PB 2 (DIN connector) 2.5mV/50kΩ
150mV/50kΩ
150mV/50kΩ

Output Level/Impedance
TAPE REC 1, 2
TAPE REC 2 (DIN connector) 150mV
30mV/80kΩ

Frequency Response
PHONO (RIAA equalization)
AUX, TAPE PB 30Hz-15kHz ±0.3dB
15Hz-40kHz +0.5dB,-1dB
Hum & Noise (IHF,
short-circuited, A Network) PHONO 70dB, MIC 65dB
AUX, TAPE PB 95dB

FM Section
Usable Sensitivity (IHF) 1.9µV

Capture Ratio (IHF) 1.0dB

Selectivity (IHF) 60dB

S/N Ratio 70dB

Harmonic Distortion MONO 0.2%, STEREO 0.4%

Frequency Response 20Hz-15kHz +0.2dB,-2.0dB
50Hz-10kHz +0.2dB,-0.5dB

Antenna Input 300Ω Balanced, 75Ω Unbalanced

AM Section

Sensitivity (IHF, Ferrite antenna) 300µV/m
(IHF, Ext. antenna) 15µV
Selectivity 35dB

S/N Ratio: 50dB

Semiconductors
FET 1, ICs 3, Transistors 46, Diodes 22

Power requirements
110/120/130/220/240V AC 50/60Hz with voltage selector.