Appendix B Precise Frequency Selection Chart

Appendix B:

Precise Frequency Selection Chart

“Filter FREQ”

Detent Panel Actual

Number Marking Freq. (Hz)

Full counter-clockwise: 53

01 . . . . . . “50” . . . . . .53 02 . . . . . . . . . . . . . . 53 03 . . . . . . . . . . . . . . 53 04 . . . . . . . . . . . . . . 53 05 . . . . . . . . . . . . . . 54 06 . . . . . . . . . . . . . . 55 07 . . . . . . . . . . . . . . 57 08 . . . . . . . . . . . . . . 58 09 . . . . . . “60” . . . . . .60 10 . . . . . . . . . . . . . . 62 11 . . . . . . . . . . . . . . 64 12 . . . . . . . . . . . . . . 66 13 . . . . . . . . . . . . . . 69 14 . . . . . . . . . . . . . . 71 15 . . . . . . . . . . . . . . 74 16 . . . . . . . . . . . . . . 77 17 . . . . . . “80” . . . . . .80 18 . . . . . . . . . . . . . . 85 19 . . . . . . . . . . . . . . 86 20 . . . . . . . . . . . . . . .90 21 . . . . . . . . . . . . . . 95 22 . . . . . . . . . . . . . . 100 23 . . . . . . . . . . . . . . 104 24 . . . . . . . . . . . . . . 110 25 . . . . “12 o’clock” . . . 116 26 . . . . . . . . . . . . . . 123 27 . . . . . . . . . . . . . . 131 28 . . . . . . . . . . . . . . 141 29 . . . . . . . . . . . . . . 151 30 . . . . . . . . . . . . . . 165 31 . . . . . . . . . . . . . . 180 32 . . . . . . . . . . . . . . 200 33 . . . . . . . . . . . . . . 224 34 . . . . . “250” . . . . . 248 35 . . . . . . . . . . . . . . 293 36 . . . . . . . . . . . . . . 347 37 . . . . . . . . . . . . . . 422 38 . . . . . . . . . . . . . . 459 39 . . . . . “500” . . . . . 504 40 . . . . . . . . . . . . . . 508 41 . . . . . . . . . . . . . . 508

Full-clockwise: 508

Appendix C:

Input Sensitivity Level Setting JL Audio amplifiers utilizing the Regulated

Intelligent Power Supply (R.I.P.S.) allow delivery of their rated power when connected to any load impedance from 1.5 - 4Ω per channel and when connected to a charging system with any voltage from 11 - 14.5V. This design is beneficial for many reasons. One of these reasons is ease of setup.

Because each JL Audio amplifier will always deliver the same amount of power within

its operational range of supply voltages, the maximum, unclipped output is very predictable.

This makes setting the gain structure via the input sensitivity controls very simple. Following the directions below will allow the user to adjust the input sensitivity of the amplifier(s) simply and easily in just a few minutes using equipment which is commonly available in installation bays.

Necessary Equipment

•Digital AC Voltmeter

•CD with a sine-wave test tone recorded at

0 dB reference level in the frequency range to be amplified for that set of channels

(50 Hz for subwoofer channels, 1 kHz for a midrange application). The CleanSweep® Calibration Disc contains the appropriate test tones and is available for sale at http://store.jlaudio.com Do not use attenuated test tones (-10 dB, -20 dB, etc.).

Do not increase any “Input Sens.” setting in the system beyond the maximum level established during this procedure. Doing so will result in audible distortion and possible speaker damage.

It will be necessary to re-adjust the “Input Sens.” for the affected channels if any equalizer boost is activated after setting the “Input Sens.” with this procedure. This applies to any EQ boost circuit, source unit tone controls or EQ circuits. EQ cuts will not require re-adjustment.

18 JL Audio - HD900/5 Owner’s Manual