dbx 100 Boom Box subharmonic synthesizer. This unit uses input information in the 50-100 hz range, and generates low frequencies one octave below, which you can selectively mix in with the original input information. Also has a low frequency boost that enhances the existing bass frequencies in the input. Low frequency output can be routed to its own output if you want to use a dedicated low end amp and speaker.

Sometimes described as an aural exciter for the low end, it adds serious bass even to input signals that have no 25-50hz frequencies at all. If you have speakers that are able to reproduce extreme low end, this unit is guaranteed to shake them!

Very good shape, has a little wear on the wood sides and some scratches (see pictures), but overall very clean, and functions just as it should.

From dbx and assorted promotional materials:

The dbx Boom Box: an all-analog subharmonic synthesizer that doesn't just boost your bass, it manufactures it. Feed it a signal and it tracks the bass already there, synthesizes a clean tone one full octave below, and blends it back in, rebuilding the deep 25 to 50Hz octave that vinyl, tape and small speakers throw away. Two controls, wood-panelled 70s charm, and a low end you feel in your chest. A cult favourite in dub, disco and club sound systems, and a secret weapon for fattening drum machines and synth bass.Why just rock the house when you can shake the foundation loose? For decades, the patented dbx Subharmonic Synthesis has been the secret weapon used by mobile DJ's and film and sound professionals to produce an impact unavailable from any other device. Subharmonic Synthesis brings out and extends bass frequencies, producing tremor-like lows you can feel as well as hear.

The dbx 100 Sub Harmonic Synthesizer recreates this lost portion of the audio spectrum by seizing information in the 50-100 Hz range, creating a signal one octave lower (25-50 Hz) and mixing this new signal back into the program

FEATURES & PROS:

• Real Subharmonic Synthesis: generates a tracked octave-down tone, not just an EQ boost.
• Fills the Bottom Octave: rebuilds the deep lows that recordings and small systems lose.
• Two Simple Controls: subharmonic level and a contoured low-frequency boost, set by ear in seconds.
• Selectable Low Frequency output: Enables you to send just the enhanced low end to a separate amplifier and speaker for biamping.

GENRE / USE

• Dub, disco and house, where synthesized sub-bass moves club PAs
• Fattening drum machines, 303 lines and synth bass with a tracked sub-octave
• Restoring lost low end on vinyl and tape playback
• Live and DJ low-end reinforcement that tracks tighter than an octave pedal