APPENDIX A:
Input Sensitivity Level Setting
Following the directions below will allow the installer 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). Do not use attenuated test tones (-10 dB, -20 dB, etc.).
The Nine-Step Procedure
1)Disconnect the speaker(s) from the amplifier’s speaker output connectors.
2)Turn off all processing (bass/treble, loudness, EQ, etc.) on the source unit, processors (if used) and amplifier. Set fader control to center position and subwoofer level control to 3/4 of maximum (if used to feed the e1800D).
3)Turn the “Input Sens.” control all the
way down.
4)Set the source unit volume to 3/4 of full volume. This will allow for reasonable gain overlap with moderate clipping at full volume.
5)Using the chart on this page, determine the target voltage for input sensitivity adjustment according to the nominal impedance of the speaker system connected to the amplifier outputs.
6)Verify that you have disconnected the speakers before proceeding. Play a track with an appropriate sine wave (within the frequency range to be amplified by the e1800D) at 3/4 source unit volume.
7)Connect the AC voltmeter to the speaker
output connectors of the amplifier using either possitive (+) connection and either negative (-) connection.
8)Increase the “Input Sens.” control until the target voltage is observed with the voltmeter.
9)Once you have adjusted the e1800D to its maximum low-distortion output level, lower the system volume (on the source unit) and reconnect the speaker(s).The “Input Sens.” controls can now be adjusted downward if the amplifier requires attenuation to achieve the desired system balance.
!
IMPORTANT
Do not increase any “Input Sens.” setting for any amplifier 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, including source unit tone controls or EQ circuits. EQ cuts will not require re-adjustment.
Nom. Impedance | Target AC Voltage |
4Ω (or higher) | 43.8 V |
| |
3Ω | 42.0 V |
2Ω | 40.0 V |
APPENDIX B:
Precise Frequency Selection Chart
“FILTER FREQ” AMP FILTER
Detent Panel Actual
Number Marking Freq.
Full counter-clockwise: 53
01 . . . . . . . . . . . . . . . . . . . . . . . .53 02 . . . . . . . . .“50” . . . . . . . . .53 03 . . . . . . . . . . . . . . . . . . . . . . . .53 04 . . . . . . . . . . . . . . . . . . . . . . . .54 05 . . . . . . . . . . . . . . . . . . . . . . . .54 06 . . . . . . . . . . . . . . . . . . . . . . . .55 07 . . . . . . . . . . . . . . . . . . . . . . . .55 08 . . . . . . . . .“55” . . . . . . . . .56 09 . . . . . . . . . . . . . . . . . . . . . . . .56 10 . . . . . . . . . . . . . . . . . . . . . . . .57 11 . . . . . . . . . . . . . . . . . . . . . . . .58 12 . . . . . . . . . . . . . . . . . . . . . . . .59 13 . . . . . . . . . . . . . . . . . . . . . . . .62 14 . . . . . . . . .“60” . . . . . . . . .65 15 . . . . . . . . . . . . . . . . . . . . . . . .65 16 . . . . . . . . . . . . . . . . . . . . . . . .66 17 . . . . . . . . . . . . . . . . . . . . . . . .70 18 . . . . . . . . . . . . . . . . . . . . . . . .73 19 . . . . . . . . . . . . . . . . . . . . . . . .77 20 . . . . . . . . .“80” . . . . . . . . .81 21 . . . . . . . . . . . . . . . . . . . . . . . .84 22 . . . . . . . . . . . . . . . . . . . . . . . .88 23 . . . . . . . . . . . . . . . . . . . . . . . .94 24 . . . . . . . . . . . . . . . . . . . . . . .101 25 . . . . . . . . . . . . . . . . . . . . . . .104 26 . . . . . . . . .“120” . . . . . . . .115 27 . . . . . . . . . . . . . . . . . . . . . . .118 28 . . . . . . . . . . . . . . . . . . . . . . .128 29 . . . . . . . . . . . . . . . . . . . . . . .137 30 . . . . . . . . . . . . . . . . . . . . . . .146 31 . . . . . . . . . . . . . . . . . . . . . . .164 32 . . . . . . . . .“150” . . . . . . . .177 33 . . . . . . . . . . . . . . . . . . . . . . .193 34 . . . . . . . . . . . . . . . . . . . . . . .197 35 . . . . . . . . . . . . . . . . . . . . . . .209 36 . . . . . . . . . . . . . . . . . . . . . . .213 37 . . . . . . . . . . . . . . . . . . . . . . .216 38 . . . . . . . . .“200” . . . . . . . .218 39 . . . . . . . . . . . . . . . . . . . . . . .225
Full-clockwise: 225
APPENDIX C:
e1800D Specifications
GENERAL SPECIFICATIONS: Recommended Fuse Value: 80A Recommended Fuse Type: AGU or MaxiFuse™
INPUT SECTIONS:
No. of Inputs: One Stereo Pair
Input Type: Differential, noise-cancelling with RCA jack inputs (low-level) and multi-pin jack (high-level)
Input Range: 200mV - 8V RMS
AMPLIFIER SECTION:
Amplifier Topology: H-Bridge, Class D Mono with impedance optimization and patented discrete drive circuitry
Power Supply: Unregulated MOSFET switching type Rated Power @ 12.5V (Mono):
480W RMS x 1 @ 4Ω
800W RMS x 1 @ 2Ω
THD at Rated Power: <0.08%
(20 Hz - 250 Hz)
Rated Power @ 14.4V (Mono):
640W RMS x 1 @ 4Ω
1000W RMS x 1 @ 2Ω THD at Rated Power: <1% (20 Hz - 250 Hz)
Signal to Noise Ratio: >95 dB referred to rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) Frequency Response: 10 - 250 Hz (+0, -1 dB)
Damping Factor: >500 @ 4Ω/50 Hz, >250 @ 2Ω/50 Hz
Input Range: 200mV - 8V RMS
AMPLIFIER FILTER:
Amplifier Low-Pass Filter: State-variable, 12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley with continuously variable cutoff frequency selection
from 40 - 200 Hz. Defeatable.
PREAMP OUTPUT:
Pass-through type. Output signal is identical to the signal at the Amp Inputs.
DIMENSIONS (LxWxH):
15.75" x 9.25" x 2.36" (400mm x 235mm x 60mm)
Due to ongoing product development, all specifications are subject to change without notice.
