JL Audio iM700/5 Owner's Manual page 8

aPPendix a:
input sensitivity level setting
Following the directions below will allow the
installer to adjust the input sensitivity of each
amplifier channel pair 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 M700/5).
3) Turn all three "Input Sens." controls 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.
nom.
main CH
impedance
(stereo)
8Ω
17.4 V
6Ω 17.4 V
4Ω 17.4 V
3Ω
16.4 V
2Ω
14.1 V
14 | JL Audio - M700/5 Owner's Manual
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 channel you are
adjusting) at 3/4 source unit volume.
7) Connect the AC voltmeter to the speaker output
connectors of the amplifier. If the channel
pair is operating in stereo, it is only necessary
to measure one channel. If bridged, make sure
you test the voltage at the correct connectors
(L+ and R–).
8) Increase the "Input Sens." control until the
target voltage is observed with the voltmeter.
9) Once you have adjusted each channel sectio
of the M700/5 to its maximum low-distortion
output level, reconnect the speaker(s).
The "Input Sens." controls can now be
adjusted downward if the amplifier requires
attenuation to achieve the desired system
balance.
Do not increase any "Input Sens." setting for
any amplifier channel or channel pair 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 readjust 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.
target aC Voltage
main CH subwoofer
(bridged) CH
34.8 V 24.5 V
32.8 V 24.5 V
28.2 V 24.5 V
not recommended 26.9 V
not recommended 26.8 V
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
Due to ongoing product development, all specifications are subject to
change without notice.
aPPendix C:
m700/5 specifications:
Recommended Fuse Value: 60A
Recommended Fuse Type: MAXI® or AGU
input sections:
No. of Inputs: Three 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), rms method
Main Channels, Stereo, all channels driven:
75W x 4 @ 4 ohms, 100W x 4 @ 2 ohms
Main Channels, Bridged, all channels driven:
150W x 2 @ 8 ohms, 200W x 2 @ 4 ohms
Subwoofer Channel, Mono, all channels driven:
180W x 1 @ 4 ohms, 240W x 1 @ 3 ohms, 300W x 1 @ 2 ohms
rated Power @ 12.5V with less than
1% tHd + noise (20Hz - 20 kHz), rms method
Stereo, all channels driven:
60W x 4 @ 4 ohms, 90W x 4 @ 2 ohms
Rated Power Bridged, all channels driven:
120W x 2 @ 8 ohms, 180W x 2 @ 4 ohms
Subwoofer Channel, Mono, all channels driven:
180W x 1 @ 4 ohms, 240W x 1 @ 3 ohms, 300W x 1 @ 2 ohms
S/N Ratio (A-weighted, 20 Hz-20 kHz noise bandwidth):
Main Channels: >104 dB referred to rated power,
>84 dB referred to 1W
Subwoofer Channel: >103dB referred to rated power,
>83dB referred to 1W
Frequency Response:
Main Channels: 12 Hz - 22 kHz (+0, -1dB)
Subwoofer Channel: 10 Hz - 1 kHz (+0, -1dB)
Damping Factor:
Main Channels: >150 @ 4 ohms per ch./ 50 Hz,
>75 @ 2 ohms per ch. / 50 Hz
Subwoofer Channel: >120 @ 4 ohms per ch./ 50 Hz,
>60 @ 2 ohms per ch. / 50 Hz
Crossover Filters:
Filter Type: State-variable / Sallen-Key, with continuously
variable cutoff frequency selection, defeatable
Ch 1&2: 12dB/oct. High-Pass (50-500 Hz, switchable to 500-
5000 Hz via"x10" switch)
Ch. 3&4: 12dB/oct. High-Pass (50-500 Hz) or Bandpass (uses
Ch 1&2 Filter Frequency as Low-Pass cutoff)
Sub Ch: 12dB or 24dB/oct. Low-Pass (50-500 Hz)
dimensions (lxwxH):
10.23" x 7.09" x 2.05" (260mm x 180mm x 52mm)
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