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17. 

Parametric or graphic EQ.

 You can apply custom EQ 

curves to each channel you have connected. To increase the 
level of a given frequency, drag the slider up. To lower it, drag 
the slider down.

18. 

EQ Setup.

 This EQ setup feature lets you click to select the 

channels to which you want to apply EQ curves. 

 

 

NOTE: 

The FREQ, GAIN, and Q fields shows the values of the 

changes made by moving the EQ sliders. Only Gain is adjustable 
when in Graphic EQ Mode. Frequency, Gain, and Q are all 
adjustable in Parametric EQ Mode. These adjustments can be 
made using the sliders or entering specific values in the F, G, and Q 
fields.

19. 

Bypass EQ and Restore EQ.

 “Bypass EQ” allow you to 

return your EQ settings to flat so you can hear the differences 
made during your tuning. “Restore EQ” returns all EQ 
adjustments to the previous settings. 

SPECIFICATIONS

•  RMS Power Output (Watts x Channel) @ 2-ohm: 60W x 8

•  RMS Power Output (Watts x Channel) @ 4-ohm: 40W x 8

•  Amplifier Class: Class D

•  Battery Voltage Range (Volts): 8V to 16V

•  Selectable Turn-on Modes: 12V, Audio Signal Sense, DC 

Offset, 12V remote output

•  LED Indicator: red/green

•  Frequency Response: 10Hz to 22kHz @ -3dB

•  Signal-to-Noise Ratio: 90dB

•  Signal-to-Noise Ratio (CEA-2006): 75dB

•  THD+N @ 4-ohm: <1%

•  Input Sensitivity, selectable: High-level or low-level

•  Input Sensitivity - Low Level: 680mV to 6V

•  Input Sensitivity - High Level: 1.6V to 15V

•  Variable Crossovers: All Channels: HPF, LPF, Band-pass w/ 

selectable 0 to 48dB slope

•  Gain, variable: All Channels with PC

•  Subwoofer level, variable : Channels 7 & 8 in PC software or 

using accessory remote control from -30dB to +6dB

•  Fuse Rating: 40A

•  Minimum Recommended Power/Ground Wire Gauge: 8awg

•  Speaker Level Inputs: Yes (RCA adapter)

•  Remote Bass Control: Included

•  Length : 9-3/8” (237.5mm)

•  Width: 5-11/16” (144mm)

•  Height: 1-15/16” (49.5mm)

•  Weight: Approx. 1000g

•  Protection: DC, OVP, UVP, OCP, OTP

TROUBLESHOOTING

No audio and POWER INDICATOR is off.

•  No voltage at BATT+ and/or REM terminals, or bad or no 

ground connection. Check voltages at amplifier terminals with 
VOM.

No audio and PROTECT INDICATOR flashes.

•  DC voltage on amplifier output. Amplifier may need service; see 

enclosed warranty card for service information.

No audio and PROTECT and POWER INDICATORS flash.

•  Voltage less than 9V on BATT+ connection. Check vehicle 

charging system.

No audio and PROTECT INDICATOR is on.

•  Amplifier is overheated. Make sure amplifier cooling is not 

blocked at mounting location. Verify that speaker-system 
impedance is within specified limits. Or, there may be voltage 
greater than 16V (or less than 8V) on BATT+ connection. 
Check vehicle charging system.

Amplifier fuse keeps blowing.

•  The wiring is connected incorrectly or there is a short circuit. 

Review installation precautions and procedures. Check wiring 
connections.

Distorted audio.

•  Gain is not set properly. Check Individual Channel Volume and/

or Mater Volume settings. Check speaker wires for shorts or 
grounds. Amplifier or source unit may be defective.

Distorted audio and PROTECT INDICATOR flashes.

•  Short circuit in speaker or wire. Remove speaker leads one at 

a time to locate shorted speaker or wire, and repair.

Music lacks dynamics or “punch.”

•  Speakers are not connected properly. Use 0°/180° phase 

adjustment, and check speaker connections at amplifier and 
speaker.

Summary of Contents for JBL DSP4086

Page 1: ...JBL DSP Amplifier DSP4086 EN FR ZH CH ID JP KO RU ES Owner s Manual Manual de propietario Mode d emploi Ɋɭɤɨɜɨɞɫɬɜɨ ɩɨɥɶɡɨɜɚɬɟɥɹ 欽䨪䩛ⱃ Panduan Pengguna 䪔铡僇剅 칺푷핞 컲졓컪 ...

Page 2: ...s and operation instructions Please note that proper installation of mobile audio components requires qualified experience with mechanical and electrical procedures If you do not have the knowledge and tools to perform this installation we strongly recommend consulting an authorized JBL dealer about your installation options TABLE OF CONTENTS PRODUCT DESCRIPTION 2 WHAT S IN THE BOX 2 INSTALLATION A...

Page 3: ...AUDIO TURN ON MODE PC SPEAKER OUTPUT CHANNELS POWER REM OUT GND GND GND 12V 12V 12V REM IN PRT PWR AUDIO INPUT 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 Chassis ground Remote turn on blue to stereo REM out Battery Fuse holder 40A fuse 18 46cm PRODUCT DESCRIPTION The JBL DSP Amplifier is an audio processor for fine tuning of aftermarket audio systems It is a self contained audio system with 6 channel audio inp...

Page 4: ... speaker terminal and negative lead to the appropriate negative speaker terminal Then plug the speaker output wiring harness into the DSP Amplifier NOTE You can connect up to 8 speakers to the JBL DSP Amplifier then specify the frequencies the amplifiers sends to each one with the JBL tuning software See Setting the Sound for details NOTE If you decide you need more power in your system you can use t...

Page 5: ... fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fi fie e e e e e e e e e e e e e e e e e e e er r r r r r r r D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D...

Page 6: ...master volume value b The current subwoofer volume level for channel 7 or 8 and adjustable from 30dB to 6dB when using the remote bass control c The voltage the amplifier is reading at the power input d The amplifier s current operating temperature e Your current system configuration 8 X OVER You can adjust the crossover points of the high pass and low pass crossovers for each channel to maximize the...

Page 7: ...PC software or using accessory remote control from 30dB to 6dB Fuse Rating 40A Minimum Recommended Power Ground Wire Gauge 8awg Speaker Level Inputs Yes RCA adapter Remote Bass Control Included Length 9 3 8 237 5mm Width 5 11 16 144mm Height 1 15 16 49 5mm Weight Approx 1000g Protection DC OVP UVP OCP OTP TROUBLESHOOTING No audio and POWER INDICATOR is off No voltage at BATT and or REM terminals o...

Page 8: ...CA_JBL_DSP Amplifier DSP4086_QSG_SOP_V6 ...

Page 9: ... crossovers selectable 0 to 48dB slopes time delay 31 band parametric or graphic EQ adjustment assignable input to output mixer with input channel summing channel gain master volume control clipping indicator to ensure the audio output is not distorted and ability to save up to 10 presets Features Small footprint All in One Class D Amplifier with DSP Control Everything You Need to Get Started Simp...

Page 10: ...orsepower to satisfy experienced installers The Windows PC user interface includes variable crossover control 0 to 48dB selectable slopes 31 band parametric or graphic EQ adjustment time delay in 0 2ms output clipping indicator assignable input to output mixer with input channel summing output channel gain master volume control clipping indicator and ability to save up to 10 presets Versatile Conn...

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