701304

JL Audio A4300 Manual

8
Zoom out
Zoom in
Previous page
1/11
Next page
JL AUDIO A4300 15
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:
A4300 Specifications
General Specifications:
Recommended Fuse Value: 40A
Recommended Fuse Type: AFS, AGU or MaxiFuse™
Input Sections:
No. of Inputs: Two Stereo Pairs
Input Type: Differential-balanced with RCA jack inputs
Input Range: Switchable from 200mV - 2V RMS to
800mV - 8V RMS
Amplifier Section:
Amplifier Topology: Class A/B with patented Absolute
Symmetry™ dual N-Channel MOSFET output design
Power Supply: Unregulated MOSFET switching type
Rated Power at 12.5 V (Stereo, all channels driven):
45W RMS x 4 @ 4 ohms, 75W RMS x 4 @ 2 ohms
Rated Power at 12.5 V (Bridged, all channels driven):
90W RMS x 2 @ 8 ohms, 150W RMS x 2 @ 4 ohms
THD at Rated Power:
<0.08% @ 4 ohms per ch. (20 Hz - 20 kHz)
Signal to Noise Ratio: >104 dB referred to rated power
(A-weighted, 20 Hz-20 kHz noise bandwidth)
Frequency Response: 10 Hz - 25 kHz (+0, -1dB)
Damping Factor: >200 @ 4 ohms per ch./50 Hz,
>100 @ 2 ohms per ch. /50 Hz
Slew Rate: ± 22V/µs
Power output at 14.4V supply voltage and 1% THD:
70W RMS x 4 @ 4 ohms (14.4V, 1% THD)
110W RMS x 4 @ 2 ohms (14.4V, 1% THD)
Rated Power (Bridged):
140W RMS x 2 @ 8 ohms (14.4V, 1% THD)
220W RMS x 2 @ 4 ohms (14.4V, 1% THD)
Amplifier Filter:
Filter Type: State-variable, 12dB/octave Butterworth
with continuously variable cutoff frequency selection
from 50-200 Hz.
Configurable as Low-Pass or High-Pass. Defeatable.
Preamp Output:
Pass-through type, buffered.
Switch-selectable to pass signal from CH 1&2 inputs
only or from all four inputs (summed).
Dimensions(LxWxH):
13.8" x 9.25" x 2.50" (350mm x 235mm x 63.5mm)
14 JL AUDIO A4300
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 A4300).
3) Switch the “Input Voltage” switch to “Low”
and 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 A4300) 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 the A4300 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 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.
Due to ongoing product development, all specifications are subject to
change without notice.
Nom.
Impedance
Target AC Voltage
Stereo Bridged
8
13.4 V 26.8 V
6
13.4 V 25.6 V
4
13.4 V 24.6 V
3
12.8 V not recommended
2
12.3 V not recommended
… 8 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for JL Audio A4300 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of JL Audio A4300 in the language / languages: English as an attachment in your email.

The manual is 0,66 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info