JL Audio XD400/4 Appendix B Precise Frequency Selection Chart, Input Sections, Amplifier Section

Appendix B: 

Precise Frequency Selection Chart

“Filter FREQ”

Detent Panel Actual

Number Marking Freq.

Full counter-clockwise: 49

01 . . . . . . . . . . . . . . 49 02 . . . . . . “50” . . . . . .49 03 . . . . . . . . . . . . . . 50 04 . . . . . . . . . . . . . . 50 05 . . . . . . . . . . . . . . 52 06 . . . . . . . . . . . . . . 53 07 . . . . . . . . . . . . . . 55 08 . . . . . . “60” . . . . . .57 09 . . . . . . . . . . . . . . 59 10 . . . . . . . . . . . . . . 61 11 . . . . . . . . . . . . . . 63 12 . . . . . . . . . . . . . . 65 13 . . . . . . . . . . . . . . 68 14 . . . . . . . . . . . . . . 70 15 . . . . . . . . . . . . . . 73 16 . . . . . . “80” . . . . . .76 17 . . . . . . . . . . . . . . 79 18 . . . . . . . . . . . . . . 83 19 . . . . . . . . . . . . . . 86 20 . . . . “12 o’clock” . . . .90 21 . . . . . . . . . . . . . . 95 22 . . . . . . . . . . . . . . 100 23 . . . . . . . . . . . . . . 105 24 . . . . . “120” . . . . . 111 25 . . . . . . . . . . . . . . 118 26 . . . . . . . . . . . . . . 126 27 . . . . . . . . . . . . . . 135 28 . . . . . . . . . . . . . . 146 29 . . . . . . . . . . . . . . 160 30 . . . . . . . . . . . . . . 174 31 . . . . . . . . . . . . . . 192 32 . . . . . “200” . . . . . 217 33 . . . . . . . . . . . . . . 243 34 . . . . . . . . . . . . . . 286 35 . . . . . . . . . . . . . . 339 36 . . . . . . . . . . . . . . 406 37 . . . . . . . . . . . . . . 444 38 . . . . . “500” . . . . . 482 39 . . . . . . . . . . . . . . 483

Full-clockwise: 483

Appendix C:

XD400/4 Specifications

General Specifications:

Recommended Fuse Value: 40A
Recommended Fuse Type: MAXI® or AGU	ENGLISH
Input Sections:
No. of Inputs: Two Stereo Pairs
Input Type: Differential-balanced with RCA jack inputs
Input Range: 100mV - 4V RMS
Amplifier Section:
Amplifier Topology: NexD™ Ultra-High Speed Class D
Power Supply: Unregulated MOSFET switching type

Rated Power at 14.4V with less than 1% THD+Noise (20Hz - 20 kHz)

Stereo, all channels driven:

75W RMS x 4 @ 4 ohms, 100W RMS x 4 @ 2 ohms Bridged, all channels driven:

150W RMS x 2 @ 8 ohms, 200W RMS x 2 @ 4 ohms

Rated Power @ 12.5V with less than 1% THD + Noise (20Hz - 20 kHz)

Stereo, all channels driven:

60W RMS x 4 @ 4 ohms, 90W RMS x 4 @ 2 ohms Rated Power Bridged, all channels driven:

120W RMS x 2 @ 8 ohms, 180W RMS x 2 @ 4 ohms Signal to Noise Ratio:

>104 dB referred to rated power (A-weighted, 20 Hz-20 kHz noise bandwidth) >84 dB referred to 1W

(A-weighted, 20 Hz-20 kHz noise bandwidth) Frequency Response: 12 Hz - 22 kHz (+0, -1dB) Damping Factor:

>150 @ 4 ohms per ch./ 50 Hz >75 @ 2 ohms per ch. / 50 Hz

Crossover Filters:

Filter Type: State-variable, 12dB/octave Butterworth with continuously variable cutoff frequency selection from 50-500 Hz.

Configurable as Low-Pass or High-Pass. Defeatable.

Dimensions (LxWxH):

8.52” x 7.09” x 2.05” (217mm x 180mm x 52mm)

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

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