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DBX 120A Subharmonic Synthesizer

Model: 120A

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About: DBX 120A Subharmonic Synthesizer

Subharmonic Synthesizer Patented Modeled Waveform ™ Synthesis;
individual control for two ranges of subharmonics level, low frequency
boost, and separate subwoofer output level. Selectable crossover at
80Hz or 120Hz. Balanced inputs with 1/4” and RCA outputs.

  • Individual control for two ranges of subharmonic frequencies
  • Separate Low Frequency Boost Circuit
  • Separate Subwoofer Output
  • 1/4" Balanced inputs and outputs
  • RCA Input Connectors
  • Front panel LEDs that show crossover status and synthesis activity
  • Patented circuitry ensures that mid and high frequencies are not affected
  • Built-in crossover with choice of 80Hz or 120Hz crossover point
  • Enhance bass audio material for use in a veriety of professional applications such as:
  • Nightclub and dance mixing
  • DJ Mixing
  • Theater and Film Sound
  • Music Recording
  • Live Music Performance
  • Broadcasting


Frequency Response: 20Hz-20kHz ±0.5dB, (no synthesis, full-range mode) 15Hz-90kHz +0, -3dB

Input Impedance: >= 40k ohm Bal or 20k ohm unbal. (1/4") 20k ohm (RCA)

Maximum Input Level: +22dBu (1/4") +8.5dBV (RCA)

Output Impedance: 100 ohm, Impedance balanced

Maximum Output Level: +22 dBu into 600 ohm

Connector Type: 1/4" TRS jacks (inputs and outputs) RCA inputs

THD: 0.05% (no synthesis, either output)

Output Noise: -88dBu, controls@max., 22Hz > 22kHz unweighted (full range output)

Front Panel Controls: 26-36Hz and 36-56Hz Band Synthesis Level, Subharmonics,
Low Frequency Boost, Subwoofer Output Crossover Frequency, Select, Crossover in/out

Indicators: Power, Crossover, Bypass

Metering: Synthesis activity (3 LEDs per band)

Dynamic Range: 112dB

Synthesis Frequency
Range: 26-56Hz (from 54-110Hz input signal)

Crossover: 12dB/octave high pass (-3dB @ 80 Hz or 120Hz);
6dB/octave derived low pass. Phase-coherent (unity-sum)


Power Requirements: 100-120VAC; 50/60Hz DO Version, 220-240VAC; 50/60Hz EU Version


Dimensions: 1.75"x19"x6.2" (4.5cm x 48.3cm x 15.75cm)

Rack Space: 1 Rack Unit

Weight: Net/shipping 4.75 lbs/8 lbs., 2.2kg/3.7kg

UPC: 691991400407 is a Canadian authorized dbx retailer.

Reviews: DBX 120A Subharmonic Synthesizer

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Warranty: DBX 120A Subharmonic Synthesizer Warranty:

30 Days

Manufacturer's Warranty:

Soundcraft, Lexicon, BSS, and dbx products are warranted to be free from defects of material and workmanship for 1 year from the date of delivery to the original user. Repairs will be undertaken at no cost for labor or materials within this time period.