VICTOR/JVC NR-50

Commentary

In addition to SuperANRS and Dolby B (ANRS), this noise reduction unit is also compatible with Dolby C.

In order to maintain compatibility with various cassettes, it is compatible with Dolby C, Dolby B (ANRS) and Super ANRS.

The Dolby C uses a two stage sliding band system that reduces noise by changing the compression and expansion frequency depending on the signal level. This reduces the tonal variation and bleeding while improving the high-frequency linearity and reducing noise significantly.
The Dolby C circuit consists of two connected ICs that guarantee stable operation. It can also be used as B type by switching the switch.

A calibration oscillator, a playback calibration volume, and an MPX filter switch are installed to ensure accurate system operation.

Model Rating

Type	Noise reduction unit
NR system	Dolby C NR, Super ANRS, ANRS/Dolby B NR
Number of channels	2 Channel
Noise reduction effect	Dolby C NR on: S/N : Approx. 15 dB improvement at 500 Hz Approx. 20 dB improvement at 1 kHz to 10 kHz MOL improvement effect : 4 db improvement at 10 khz ANRS/Dolby B NR on: S/N : 5 db improvement at 1 khz 10 db improvement at 5 khz Super ANRS on: S/N ratio improvement is same as ANRS/Dolby B NR MOL improvement effect Frequency characteristics : 6 dB at 10 kHz (0 VU recording) 12 dB at 10 kHz (+ 5 VU recording) Distortion Factor : 3% or less at 10 kHz (0 VU recording) 3% or less at 10 kHz (+ 5 VU recording)
Frequency characteristic	20 Hz to 20 kHz ± 1 dB
Total harmonic distortion factor	0.12% at 400 Hz at Dolby level
Input terminal	Line (2 systems) : 80mV/70k Ω Mic (2 systems) : 150mV/60k Ω
Output terminal	Line (2 systems) : 0 ~ 0.5V/2.3k Ω, Applicable Impedance : 50k Ω or more Tape (2 systems) : 0.5V/1.5k Ω, Applicable Impedance : 50k Ω or More
AC outlet	unswitched:300W max
Pwer	100 VAC, 50Hz/60Hz
Power consumption	13W (Electrical Appliance and Material Control Law)
External dimensions	Width 420x Height 60x Depth 252 mm
Weight	3.0kg