Lightning Audio L-2125 - Page 16

Adjusting Level
1. Turn amplifier levels to minimum (counter-clockwise).
2. Turn the source unit volume up to 7/8 maximum (or
when distortion is just inaudible) .
ill us.-3.1
LEVEL
· 0. ·
MIN MAX
3. Slowly increase amplifier level control until adequate volume is
achieved.
NOTE: Best signal to noise and dynamic range are realized with gain set to
minimum. For a more in depth setting procedure, contact Lightning Audio
Technical Support.
A>. CAUTION A~oid ~ettin~ amplifie~ gain high as noise and
~ d1stort1on w1ll greatly mcrease.
Adjusting Crossover Frequency
illus. -3.3
Do the following individually for each channel.
il\us.-3.2
100 175
Placing the crossover switch in the HP posi-
tion sets the amplifier to the High Pass mode,
enabling frequencies above the cut - off point to
pass, adjustable between 50-250Hz .
HP-AP-LP
ICIJ I
75· 0. ·225
50 250
FREQ.
Hz
Placing the crossover switch in the APposition sets the amplifier to the All
Pass mode, preventing any crossover adjustment, allowing all frequencies
to pass .
Placing the crossover switch in the LP position sets the amplifier to the
Low Pass mode, enabling frequencies below the cut-off point to pass,
adjustable between 50-250Hz .
Turn the crossover adjustment knob all the way down . With the system
playing, turn the crossover adjustment knob up slowly until the desired
crossover point is achieved.
Variable Phase
Allows you to conveniently switch the output phase of the
amplifier between oo and 180 °. This has the same effect
as physically reversing the Positive (+) and Negative (-)
speaker wires .
High Level Input
ill us.-3.4
PHASE
I ccJ I
o• tso•
High Level Inputs are used when you want to connect an amplifier to your
factory radio or an aftermarket radio that does not have low - level (RCA)
inputs. It allows you to use the signal coming from the speaker outputs as
an input source for the amplifier .
1 6
OPERATION
Bass Boost
This works along with the crossover switch on the amplifier. When set to
Low-Pass (LP) operation, this is a variable Bass Boost. When set to High-
Pass (HP) operation, this is a variable Mid-Bass and Treble Boost. When
set to All-Pass (AP) operation, both the Bass and Treble frequencies are
boosted . Set this to your personal preference while listening to the system.
Maximum
Boost
+20
+18
+16
BASS +14
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ds·•
--· ·-J +6
I OdB +12dB
I +4
I +2
[ _______ ..,
Minimum -2
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Flat 20 , 5o 100 200 5oo 1k 2k
Bass Hz
illus .-3 .5
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5k 10k 20k
Variable 0 - + 12dB @ 45Hz (L-5600, L -1250, L -15000 & L -11 0000)
illus .-3.6
Maximum •
20
Boost •
18
+16
dB
+14
BASS BOOST r . •
12
I OJI I +10
OdB +6dB +12dB_! +8
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- +6
: ~ -- -' +4
I +2
,__ _______ ..0
Minimum -2
Flat 20
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Sk 10k 20k
Selectable : 0/+6dB/+ 12dB @45Hz (L - 2125, L -4300)
Lt. CAUTION Over excursion and subsequent damage may
• occur at high levels of boost.
Remote Level Control (Option)
Quick Install:
1. Using the screws supplied , install the mounting clip .
2. Slip the remote onto the mounting clip until it snaps into place.
3. Route and connect the cable to the remote and amplifier.
Operation:
4. When connected, the " Level Control" is linked and allows you to
remotely control the output level of the amplifier from the dash or
center console .