YAMAHA CR-1040

A solid-state stereo receiver with dual power supply and OTL amplifier design, rated at 80 watts per channel.

Overview

The YAMAHA CR-1040 is a stereo receiver from Yamaha. It handles FM reception and amplification. It puts out 80 watts per channel into 8 ohms with low distortion and a wide frequency response, and it takes speaker loads from 4Ω to 16Ω. It weighs 38.6 lbs (17.5 kg) and measures 22-1/4" wide, 6-3/4" high, and 16-1/4" deep.

Specifications

Power output	80 watts per channel into 8Ω (20Hz-20kHz, 0.05% THD)
Frequency response	20Hz to 20kHz
Total harmonic distortion	0.05%
Signal to noise ratio	90dB (MM), 100dB (line)
Input sensitivity	2.5mV (MM), 150mV (line)
Speaker load impedance	4Ω to 16Ω
Dimensions	22-1/4" wide, 6-3/4" high, 16-1/4" deep
Weight	38.6lbs (17.5kg)
Semiconductors	1 FET, 70 transistors, 46 diodes
Tuner section: FM sensitivity	1.9uV (IHF)
Tuner section: FM S/N ratio	70dB
Tuner section: FM THD	0.3%
Tuner section: FM frequency response	30Hz-15kHz

Design

The CR-1040 runs a dual power supply, with one supply for the front end and a separate one for the power amplifier. The amplifier is direct-coupled OTL (output transformer-less). The phono equalizer uses a new low-noise dual FET in the first stage.