Marantz RV351
¥ 29,800 (around 1986)
Commentary
A surround processor that supports Dolby surround system.
It faithfully reproduces the Dolby Surround Circuit developed by Dolby Research Laboratories and can reproduce the surround signal recorded in software. The reverse phase surround signal is processed in the following order : matrix circuit → delay circuit → 7 khz low-pass filter → Dolby B Type NR system.
Equipped with a calibration control, the indicator lights up at the calibration level that can be adjusted according to the source level.
It has a delay control function and can be set according to the source.
In addition to Dolby surround sound, it is equipped with matrix surround sound and spatial surround sound, and it can be used from normal stereo source to monaural source by switching the switch.
Matrix Surround lets you surround a normal stereo source, Spatial Surround lets you create a pseudo-stereo mono source, and Effect Controls let you adjust the matrix and spatial surround effects according to the source.
It has a dedicated power amplifier to drive surround speakers.
With a built-in master volume, you can control the volume of the surround speakers and the main speakers simultaneously.
It also has a rear volume that allows you to adjust only the surround sound volume.
Equipped with two front outputs.
.JPG)
Model Rating
| Type | Dolby surround processor |
| Dynamic Power (IHF) | 30W (6 Ω) |
| Maximum effective power (EIAJ) | 25W (6 Ω) |
| Total harmonic distortion factor | 0.03% (1 kHz, 20W, 6 Ω) |
| Frequency characteristic | 20 Hz ~ 20 kHz -1.5 dB (direct) 20 Hz to 15 kHz -3dB (matrix) 100 hz ~ 6 khz -3dB (Dolby) |
| Input Sensitivity / Impedance | 250mV/68k Ω |
| Signal-to-noise ratio | 90dB(IHF-A) 68 dB (Dolby CCIR/ARM auditory correction noise level) |
| Delay time | 15 mS ~ 30 mS (Variable) |
| External dimensions | Width 420x Height 60x Depth 200 mm |
| Weight | 3.2kg |