dbx 3BX 3 Band Dynamic Range Expander

dbx 3BX
The dbx 3BX is a state-of-the-art dynamic range expander that enhances audio quality by dividing the sound spectrum into three frequency bands. Utilising advanced RMS detectors and voltage-controlled amplifiers, it individually expands bass, midrange, and treble, ensuring pristine sound clarity and preserving musical integrity even in the most complex compositions.

dbx 3BX 3 Band Dynamic Range Expander Details

With the dbx 3BX, dbx has advanced dynamic range expansion by dividing the audio spectrum into three separate frequency bands.

The dbx 3BX uses multiple true RMS detectors and voltage-controlled amplifiers, allowing the bass, midrange, and treble portions of your music to be linearly expanded individually. This method achieves stunning results that other expander systems cannot match.

With the dbx 3BX, powerful, percussive bass notes won’t artificially elevate midrange sounds, and midrange crescendos won’t cause low-level high-frequency information to be unnaturally brought to the foreground.

This precision ensures that even the most complex musical material maintains its integrity, providing an unmatched solution for audiophiles who demand the highest level of sound quality.

dbx 3BX

Specifications

Released in: 1977
Made in: U.S.A.
  • Expansion Ratio: Continuously adjustable to 1.5
  • Dynamic Range (peak signal to weighted background noise): 110 dB
  • Input Impedance: 50 K
  • Input Level (nominal): 300 mV
  • Input Level (maximum): 7 V RMS
  • Output Impedance (designed to drive 5 K ohms or greater): 100 ohms
  • Output Level (maximum, 20 Hz to 20 kHz): 7 V RMS
  • Frequency Response: 20 Hz to 20 kHz ± 0.5 dB
  • Input Noise (unweighted, referenced to 1 V): -85 dBV
  • Total Harmonic Distortion: 0.1% typical at 1.0 expansion, 20 Hz to 20 kHz
  • I.M. Distortion (SMPTE): 0.15% typical
  • Power Line Requirement: 117 VAC, 50 to 60 Hz (100, 220, 240 optional for export markets)
  • Power Line Consumption: 30 W
  • Dimensions: 95.2 mm x 450.85 mm x 260.35 mm
  • Weight: 5.44 kg
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User Reviews

dbx 3BX 3 Band Dynamic Range Expander User Reviews

This thing will knock ya socks off

By Justin R

Sound Quality 100%
Build Quality 100%
Usefullness 100%
Mojo/Funk 100%
Reliability 100%

If you’re really looking to draw out those truly minuscule, but oh so very satisfying, little things that you had no idea existed within a recording or how much further it draws you into a world of feeling the music as if it were live, e.g. Since i’ve been loving you’ by Led Zeppelin,

Used it? Leave your rating and review.

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The details provided above are drawn from historical documents like advertising brochures or user manuals. They’re shared without bias or review. This info is given solely for your consideration, helping you gauge its usefulness to you.

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