top of page

Digital signal processing for the win

One of the best ways to get superior sound fidelity in your car is to add an amplifier to pump up the power, along with a digital signal processor to fine-tune the sound quality. JBL's incredibly compact DSP4086 8-channel amp/processor will do both, providing eight channels of 40 watts RMS while sculpting the sound with powerful tuning software using your Windows PC.

Connecting to the whole system

The DSP4086 was designed to take the signals from your vehicle's front speakers, rear speakers, front center channel, and rear subwoofer. You can then process those signals to create eight powered outputs, and you have the ability to power and control your front tweeters.

Tuning

Every channel features 31-band EQ, switchable from parametric to graphic; completely variable high-, low-, and band-pass filters with selectable slopes; time delay, up to 12ms in 0.2ms increments; and 0/180° phase adjustment. You can assign each input to an output, and you can sum signals in order to create a full-range signal to be processed.

JBL DSP4086

$439.95 Regular Price
$399.95Sale Price
    • Featured in our article: Best multi-channel car amplifiers for 2023
    • 8-channel car amplifier with digital signal processing
      • 40 watts RMS x 8 at 4 ohms
      • 60 watts RMS x 8 at 2 ohms
    • DSP and EQ tuning tool adjustments made via USB connection to a Windows PC
      • save up to 10 presets
    • inputs: 6 assignable preamp and speaker-level (RCA adapters included)
    • outputs: 8 powered and processed

    Adjustment Details:

    • 31-band EQ (selectable parametric or graphic)
    • adjustable high-, low-, and band-pass filters (20-20,000 Hz)
      • selectable filter slopes 6, 12, 18, 24, 30, 36, 42, 48 dB/octave)
    • adjustable delay: 0 to 12ms in 0.2ms increments
    • phase adjustment: 0 or 180°
    • programming done by a Windows-run PC

    Other Features:

    • includes wired remote for ch 7/8
    • fuse rating: 40A x 1
    • wiring and hardware not included with amplifier
      • 8-gauge power and ground leads recommended
    • dimensions: 5-11/16"W x 2"H x 9-3/8"D
    • warranty: 1 year
  • JBL DSP4086 owner's manual

    • 8-Channel DSP amplifier w/ attached 6" 6-RCA input harness
    • Remote bass level control
    • 16.5' Remote level control cable (RJ-12 connectors both ends)
    • 8" Power/ground/Rem harness (inline 40A ATO fuse)
    • 8" 16-Pin speaker output harness
    • 70" USB Cable (type-A both ends / 2.0)
    • 6 Input adapters (RCA to set-screw)
    • Spare 40A ATO fuse
    • Four 15mm screws
    • Two 10mm screws
    • 4 Large flat-washers
    • 4 Small flat-washers
    • 4 Lock-washers
    • Four 6-1/2" wire ties
    • Owner's manual (Eng/Span/Fren/Others)