Yamaha RX-1130 (1987–1989)
The Yamaha RX-1130 was an AV receiver built from 1987 to 1989. It sold in Japan for ¥118,000 and in the US for $599. Yamaha used it to put home theater processing and two-channel performance in one chassis. It has a modest following among vintage enthusiasts who like that dual nature.
At its core, the RX-1130 is a serious stereo receiver. It makes 100 watts per channel into 8 ohms from 20Hz to 20kHz at no more than 0.015% THD. The amplifier is direct-coupled with pure current feedback, and the output stage uses power MOSFETs. A dual FET differential input stage feeds the main channels. There's no protection relay in the signal path, which Yamaha did to keep the circuit clean. The front channels are also rated for 100W into 6 ohms at 1kHz (0.05% THD). Front and surround sections get separate power supplies so they don't interfere with one another.
The surround section is where the RX-1130 gets interesting. An additional amplifier drives two rear channels (25W + 25W into 8 ohms at 1kHz, 0.05% THD). There are five surround modes - Dolby, Natural, Hall, Simulated Stereo, and Live - plus three digital DSP programs. A rear channel level control balances the surround output. This was early home theater territory, and Yamaha positioned the RX-1130 between stereo purists and the coming wave of surround sound. Audio (October 1989, p.256) ran a full-page advertisement for it. The ad pushed the 360-watt dynamic power into 2 ohms, the low-impedance drive capability, and the five digital surround modes, and it stressed that the receiver could handle demanding speakers and movie soundtracks alike.
The front panel is busy but purposeful. A motorized volume control sits next to a built-in 7-band graphic equalizer with spectrum analyzer display, and a high-resolution fluorescent display handles system feedback. The tuner is microprocessor-controlled with 40 presets for AM and FM. FM sensitivity is rated at 1.5µV with an 85dB signal-to-noise ratio. Phono inputs cover both MM (2.5mV sensitivity, 86dB S/N) and MC (200µV, 75dB S/N). The phono stage measures a flat ±0.3dB RIAA deviation with 0.003% THD, which is respectable even today. Line-level inputs (CD, tuner, aux) claim 0.0008% THD and a 98dB signal-to-noise ratio.
Video is the missing piece. The RX-1130 is called an AV receiver, but no video input counts or specifications are documented. That suggests Yamaha may have treated video switching as an afterthought or left it to external processors. No remote control model number is on record either, though the motorized volume strongly implies one existed.
The RX-1130 weighs 13.5kg and measures 435 × 150.5 × 420mm. Power consumption is rated at 230W. The seven-band EQ can be switched into the signal path or bypassed. The fluorescent display doubles as a spectrum analyzer when the EQ is engaged.
Owner reports are generally positive. One review rated it 4 out of 5 stars, praising sound quality, clean FM reception, and reliable build. It also noted that bench testing showed around 80W continuous into 8 ohms rather than the rated 100W. A forum post on AudioKarma called it "a hidden gem for 2-channel listening" with an "excellent phono section." Known issues are typical for the era. The fluorescent display tube can fail and is now essentially unobtainable, and some units develop noisy volume controls after decades. Cleaning the motorized potentiometer usually helps. The service manual is available for free download at HiFi Engine.
The RX-1130 sits in an interesting spot in Yamaha's late-1980s lineup. It's not as celebrated as the earlier CR-series receivers, nor as exotic as the flagship separates of the period. It combines the company's stereo heritage with the coming home theater wave.
- Power output: 100W + 100W (20Hz–20kHz, 8Ω, 0.015% THD)
- Surround power: 25W + 25W (1kHz, 8Ω, 0.05% THD)
- Dynamic power: 360W/ch into 2Ω (advertised)
- Phono: MM and MC inputs, RIAA ±0.3dB
- 7-band graphic EQ with spectrum analyzer
- FM sensitivity: 1.5µV; 40 station presets
- Dimensions: 435 × 150.5 × 420mm; 13.5kg
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