Owner's Manual

Top Panel Adjustments
Level
Freq
Level
Freq
Freq
Freq
Level
Freq
Freq
Level
Freq
Freq
Level LevelLevelLevel
CH1/2
IN
CH3/4
IN
CH5/6
IN
CH7/8
IN
CH1/2
CH1+3
CH2+4
GAIN
GAIN
GAIN
GAIN
CH1+3+5
CH2+4+6
CH1+3+5+7
CH2+4+6+8
Full-Range or HP
BP+HP
BP+BP+HP
Full-Range
Tweeter HP
Midrange BP
Midbass BP
Sub LP
CH1/2
OUT
CH3/4
OUT
CH5/6
OUT
CH7/8
OUT
ΠAUX Gain Adjustment: In systems
using both the link8's main speaker
level and auxiliary inputs, this gain
adjustment is primarily for matching
the AUX output level with that of
the main source. It is recommended
to set the speaker level input gain(s)
first, particularly if summing.
 CH1/2, CH3/4, CH5/6, CH7/8 Gain Adjustments: These gain adjustments are for matching each output
channel pair’s signal level with the source’s maximum unclipped signal range and the maximum input
capability of connected amplifier(s). When summing channels together, these gain adjustments should
be used for matching relative output levels so that the combined signals sum as close to flat as
possible. If a gain difference between channel pairs is desired with direct signal input, adjustments
made at the link8 should also minimize amplifier gain settings for best S/N. Note that the gain
adjustment will be bypassed if its input select is set to copy the previous channel pair.
Ž Clipping Indicators: These yellow LEDs indicate when the output signal from each channel pair is at
maximum level before clipping (distortion) occurs, whether the source is main speaker level or AUX
input. Each will be dimly lit just before the onset of clipping and full bright at clipping. Since the link8
can produce up to 10Vrms output before clipping, it is likely that gain(s) will need to be reduced below
the illumination point(s) to match your amplifier(s) maximum input capability or optimize source
volume range. Note that the AUX input is controlled by its own unified gain that affects all four
output channel pairs equally and will illuminate all LEDs simulaneously when clipping.
 CH3/4, CH5/6, CH7/8 Input Select: These 3-position switches are for selecting which signal is routed
internally to each channel pair’s output stage. It provides for 2-channel, 4-channel, 6-channel or 8-
channel input, as well as various independent and summed input configurations:
 Copy: In the left switch position, this input setting will copy the internal signal from after the
previous channel pair’s gain stage and route to its outputs. This bypasses the gain adjustment so
its outputs are controlled by the previous channel pair’s gain. If independent gain is desired, use
jumper wires at the speaker input terminals and select direct input instead.
‘ Direct: In the middle switch position, this input setting will route the channel pair’s input signal
directly to its gain and output stages.
’ Sum: In the right switch position, this input setting will sum the indicated channel signals from
after their respective gain stages and route the combined signals to its left and right RCA outputs.
For example, if CH3/4’s input select is set to CH1+3/2+4, CH1+3 will be sent to the CH3(L) output,
and CH2+4 will be sent to the CH4(R) output. For vehicles without an available full-range signal,
this function can be used to sum pre-filtered signals together to create a useable frequency range
output from up to a 4-way factory system. Note that CH1/2’s output is selectable, getting its signal
either directly from CH1/2’s input or copied from CH7/8 (after its summing stage). Also note that if
front channels are input to CH5/6 and rear channels are input to CH7/8 (or vise versa), selecting
CH5+7/CH6+8 can be used to ensure CH7/8’s output will always retain at least 50% or more signal
(Never-Zero) for a subwoofer, regardless of fader changes made at the source.
Example: 4-way Summing Signal Flow
Œ

Ž


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’ 
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’ 
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