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JL Audio

 

 

LOW-PASS FILTER CONTROL

The JX monoblock employs a 12dB/octave  

low-pass active filter for its internal channel. This 
feature is designed to attenuate frequencies above 
its filter frequency, so that the system’s subwoofers 
do not reproduce any audible mid-range content.

The low-pass filter is fully variable between 

50 Hz and 200 Hz via the 

“Filter Frequency”

 

control knob. 80 Hz (as shown in the diagram 
below) is  a good starting point for system tuning. 

“PREOUTS”

The JX monoblock incorporates a pass-

through preamp output (Preouts) section, 
designed to make multiple amplifier systems easy 
to set up. This section consists of a pair of RCA-
type jacks marked “

Preouts

”.

These preamp outputs deliver the same signal 

that is being fed to the Low-Level inputs. (If the 
input signals are full-range, the preamp outputs 
will be full-range). This signal is not affected by 
the bass boost or Filter processing selected for the 
amplifier. 

 

I M P O R TA N T !

!

 

The "Preouts" of the JX250/1D and JX500/1D 
will not pass signals from the Hi-Level inputs. 
The JX1000/1D will pass signals from the 
Hi-Level inputs and will attenuate them to 
Low-Level.

Summary of Contents for JX1000/1D

Page 1: ...tion equipment to ensure optimum performance from this product Should you decide to install the amplifier yourself please take the time to read this manual thoroughly so as to familiarize yourself wit...

Page 2: ...l allows you to hear necessary noises to operate your vehicle safely horns sirens etc SERIAL NUMBER In the event that your amplifier requires service or is ever stolen you will need to have a record o...

Page 3: ...enclosure be ventilated with the aid of a fan In normal applications fan cooling is not necessary IMPORTANT Mounting the amplifier upside down is strongly discouraged If mounting the amplifier under...

Page 4: ...4 Run signal cables RCA cables and remote turn on wire from the source unit to the amplifier mounting location 5 Run speaker wire from the speaker systems to the amplifier mounting location 6 Find a g...

Page 5: ...AWG is sufficient for JX250 1D only and should be kept as short as possible while accessing a solid piece of sheet metal in the vehicle The surface of the sheet metal should be sanded at the contact...

Page 6: ...UTS The JX monoblock amplifier offers two input connection methods one for high level speaker level signals and one for low level preamp level signals You may run a stereo or a mono signal into the in...

Page 7: ...hassis ground and only connect the Left and Right Positive plug wires to the factory radio outputs IMPORTANT If you plan to use the preamp outputs to feed a stereo amplifier you must connect stereo si...

Page 8: ...g PREOUTS The JX monoblock incorporates a pass through preamp output Preouts section designed to make multiple amplifier systems easy to set up This section consists of a pair of RCA type jacks marked...

Page 9: ...nel of the JX Monoblock amplifier using a standard telephone cable supplied with the RBC 1 When connected to the amplifier the Remote Level Control operates as follows At full counter clockwise rotati...

Page 10: ...Do not chassis ground any speakers connected to this or any other JL Audio amplifier Doing so will cause the amplifier to go into protection To connect the speaker wires to the amplifier strip 1 2 inc...

Page 11: ...own to protect its circuitry When the problem is corrected the amplifier will return to normal operation and the Protect LED will shut off SERVICING YOUR AMPLIFIER If your amplifier fails or malfuncti...

Page 12: ...d to the amplifier outputs Make sure you reference the appropriate chart for your specific JX monoblock model 6 Verify that you have disconnected the speakers before proceeding Play a track with an ap...

Page 13: ...sions LxWxH 10 94 x 7 68 x 2 09 278 mm x 195 mm x 53 mm Net Weight 7 0 lbs 3 18 kg Due to ongoing product development all specifications are subject to change without notice APPENDIX B Specifications...

Page 14: ...on is pinched by the terminal set screw and that each connection is tight Check to make sure there is 12V at the Remote connection of the amplifier In some cases the turn on lead from the source unit...

Page 15: ...revious check item after plugging the input cables back into the amplifier test for output at the speaker outputs of the amplifier Unless you enjoy test tones at high levels it is a good idea to remov...

Page 16: ...16 JL Audio INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions...

Page 17: ...JX250 1D JX500 1D JX1000 1D 17 ENGLISH...

Page 18: ...retail and no warranties whether express or implied shall apply to this product thereafter Some states do not allow limitations on implied warranties therefore these exclusions may not apply to you Th...

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