Amplifier Owner’s Manual
© 2018 Stinger • www.stingerelectronics.com
System tuning
1. Install all system fuses.
2. Set the amplifier’s input sensitivity
controls to their minimum positions (full
counterclockwise).
3. Set all amplifier signal routing switches
according to your system’s design.
4. Make preliminary adjustments to the crossover frequency,
usually 80Hz is good starting point for high and low pass. It may
be necessary to fine tune the crossover
frequency later for the best overall
sound quality.
5. If using an Remote Level Control, set it
to maximum (full clockwise).
6. Turn the headunit on with the volume set to minimum or pair
your bluetooth device and set volume to minimum.
6. Visually check the amplifier’s has powered on by the power
LED.
8. Check the condition of all other components to make sure
they are powered up.
9. Set the headunit’s tone controls, balance, and fader to the
center (flat) position. Turn off any loudness or other signal
processing features.
10. Set the volume control of the source unit
for maximum undistorted output (on most
headunits / media devices this will be
approximately 7/8 of maximum volume). Use a
very clear and dynamic recording.
11. Turn up the input level control until the speakers reach
maximum undistorted output.
12. Repeat input level adjustments for all other amplifiers.
13. Reduce the source unit volume to a comfortable level.
14. Listen to various musical selections to check overall system
balance. Compare front to rear, midbass to midrange, etc. If
one speaker set is too loud compared to another, then its level
must be lowered to blend correctly with the other speakers.
The idea is to reference all speakers to the weakest set.
15. Fine tune crossover frequencies to achieve the smoothest
possible blending of each speaker set.
16. With all levels set correctly, the system will reach overall
maximum undistorted output at the volume level set in step 10.
Volume Control with Mute Function
The included volume control will allow for +/- 20dB of level
adjustment from the remote based on the level set in the previous
step.
In some instances this will not be enough to completely mute the
output level depending on the amount of input signal. In these
cases, a mute function allows for instant mute of output without
adjusting the volume control.
To activate the mute function, press the volume control knob
inward until it clicks.
To return to previous output level; press the control knob again.
