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APPENDIX B:

RD1500/1 Specifications

 

Amplifier Section:

Amplifier Topology:

 NexD™ High Speed Class D

Power Supply:

 Unregulated MOSFET switching type

Rated Power at 14.4V with less than 

 

1% THD+Noise (20Hz - 20 kHz) RMS Method

750W RMS x 1 @ 4 ohms*
1000W RMS x 1 @ 3 ohms*
1500W RMS x 1 @ 2 ohms*
1500W RMS x 1 @ 1 ohms**
*Requires “Low Z” switch to be in “2Ω” position
**Requires “Low Z” switch to be in “1Ω” position

Rated Power @ 12.5V with less than  

1% THD + Noise (20Hz - 20 kHz) RMS Method

750W RMS x 1 @ 4 ohms*
1000W RMS x 1 @ 3 ohms*
1200W RMS x 1 @ 2 ohms*
1500W RMS x 1 @ 1 ohms**
*Requires “Low Z” switch to be in “2Ω” position
**Requires “Low Z” switch to be in “1Ω” position

Signal to Noise Ratio:

 

>82 dB referred to rated power
(A-weighted, 20 Hz-20 kHz noise bandwidth)
>50 dB referred to 1W
(A-weighted, 20 Hz-20 kHz noise bandwidth)

Frequency Response:

  7 Hz - 500 Hz (+0, -1dB)

Damping Factor

>1100 @ 4 ohms / 50 Hz  
>550 @ 2 ohms / 50 Hz

Input Section:

No. of Inputs:

 One Stereo Pair

Input Type: 

 Differential-balanced with RCA jack inputs 

Input Range: 

 200mV - 8V RMS

Signal Processing:

Filter Type: 

Low-Pass, 12 dB/octave Butterworth with 

continuously variable cutoff frequency selection  
from 50 - 500 Hz. 

Bass Boost: 

Single-band with 45 Hz center frequency, 

adjustable from 0 to +12 dB.

Remote Level Control:

 Via optional, wired RBC-1 remote 

level controller. Full mute to 0 dB range. (sold separately) 

Preamp Output:

 Buffered pass-through type. 

Power Connections:

Recommended Fuse Value: 

 150A

Minimum Copper Power/Ground Wire :

  2 AWG

(Note: Copper Clad Aluminum (CCA) wire is  
not recommended.)

Dimensions(LxWxH): 

18.05” x 6.96” x 2.13” (458mm x 177mm x 54mm)

Due to ongoing product development, all specifications are subject to 
change without notice.

Summary of Contents for NexD RD1500/1

Page 1: ...rized JL Audio dealer Your authorized dealer has the training expertise and installation equipment to ensure optimum performance from this product Should you decide to install the amplifier yourself p...

Page 2: ...und on the bottom panel of the amplifier and on the amplifier packaging Serial Number INSTALLATION APPLICATIONS This amplifier is designed for operation in vehicles with 12 volt negative ground electr...

Page 3: ...anner which does not interfere with your vehicle s safety equipment air bags seat belt systems ABS brake systems etc You should also take the time to securely mount the amplifier so that it does not c...

Page 4: ...speaker systems to the amplifier mounting location 6 Find a good solid metal grounding point close to the amplifier and connect the negative power wire to it using appropriate hardware use of the JL A...

Page 5: ...w The ground connection should be made using 2 AWG copper wire 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...

Page 6: ...rminal tighten the set screw firmly taking care not to strip the head of the screw and making sure that the wire is firmly gripped by the set screw If a source unit does not have a dedicated remote tu...

Page 7: ...n you should select The High position on the Input Voltage switch selects an input sensitivity range between 800mV and 8V for all input channels This is useful for certain high output preamp level sig...

Page 8: ...void distortion Correct use of the filter can substantially improve the fidelity of your audio system LP Filter Operation The RD 500 1 monoblock employs a 12 dB per octave low pass active filter with...

Page 9: ...of the preamp output SUBWOOFER OUTPUTS The RD1500 1 is designed to deliver power into subwoofer loads equal to or greater than 1 ohm of nominal impedance The RD1500 1 s subwoofer outputs are designed...

Page 10: ...ondition remains it will return to red and mute the output again A continuous over current condition is displayed with alternating red blue lights Because the muting behavior may be very short in dura...

Page 11: ...try in the JL Audio amplifiers requires specifically trained service personnel Do not attempt to service the amplifier yourself or through unauthorized repair facilities This will not only void the wa...

Page 12: ...or reasonable gain overlap with moderate clipping at full volume 5 Verify that you have disconnected the speakers before proceeding Play a track with an appropriate sine wave within the frequency rang...

Page 13: ...B referred to 1W A weighted 20 Hz 20 kHz noise bandwidth Frequency Response 7 Hz 500 Hz 0 1dB Damping Factor 1100 4 ohms 50 Hz 550 2 ohms 50 Hz Input Section No of Inputs One Stereo Pair Input Type Di...

Page 14: ...s required To test for this problem jump the 12VDC wire to the Remote terminal to see if the amplifier turns on I hear a repetitive ticking or popping sound coming out of the speaker s Check Check the...

Page 15: ...e unit while an appropriate test tone is played through the source unit disconnect the input cables from the amplifier prior to this test The frequency used should be in the range that is to be amplif...

Page 16: ...16 JL Audio RD1500 1 Owner s Manual INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions...

Page 17: ...17...

Page 18: ...18 JL Audio RD1500 1 Owner s Manual NOTES...

Page 19: ...19 NOTES...

Page 20: ...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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