Audio Database


Noise reduction unit equipped with dbx system.

The dbx system records music signals compressed by half and expands them twice during playback, so that even music signals with a dynamic range of 110 dB can be recorded on cassette tapes with a dynamic range of 55 dB.
The dbx system provides a noise reduction of more than 30 dB over the entire audio band and more faithful recording at a recording saturation level of + 20 dB.

We have solved the problem of cassette tapes in which the higher the input level, the lower the high-frequency characteristics.

It is capable of simultaneous recording and monitoring as possible with a 3-head deck, and is equipped with dbx disc position.

There are 2 variations, silver and black.

Model Rating
Type Dbx noise reduction unit
Input impedance 36k Ω
Input level 300 mv, up to 6 v
Output impedance 2.5k Ω
Output level Maximum 5.5 V (20 Hz ~ 20 kHz, 22k Ω load)
Frequency characteristic 40 Hz to 20 kHz ± 1 dB
Total harmonic distortion factor 0.15% or Less (100 Hz to 20 kHz)
Compression / extension ratio 2 : 1 / 1 : 2 (constant linear decibel)
Pwer 100 VAC, 50Hz/60Hz
Power consumption Approx. 7W
External dimensions Width 430x Height 53x Depth 260 mm
Weight Approx. 3.5 kg