Owner's Manual

In-Dash

THREE.2

Owner’s Enjoyment Manual

shipped in the unbalanced mode, which is often best, it may

be necessary to change this depending upon the conﬁgura-

tion of the components you use. To change this, move the

appropriate jumper on the 3-pin header.

12. Input Gain Control: This potentiometer (aka

“pot”) is used to increase the amount of signal voltage to

your power ampliﬁers. With this control you can provide

up to 13 Volts (peak) to your ampliﬁer’s inputs. Check with

your ampliﬁer manufacturer’s specs to determine exactly

how much voltage they can really handle. More info on this

in the section on “Level Matching” page 12.

13. Crossover Frequency Selection:

14. Illumination Selection: These jumpers let you

change the backlight illumination to Cool Blue or Hot Red.

Given that we are acclimated to sun free life in the rainforest,

we have shipped the THREE.2 in the Cool Blue mode.

15. Ground Isolation Selector: This feature allows

you to change the power supply ground for different systems.

When the THREE.2 is shipped from the factory, the selector

is in the fully isolated position (which is generally the best).

Alas, not every manufacturer devotes so much time into

getting its grounds right. Therefore, we have provided other

ground isolation options to help if you have a ground loop

noise (alternator whine) in your system. Experiment with

different settings if you run into this type of problem. To

change the settings, turn the system off, carefully move the

black jumper from the center two pins (Isolated) and move it

to either the top two pins (200Ω) or the bottom two pins

(Ground).

Now: If you don’t feel comfortable with everything you

have read up to this point, run, don’t walk to your nearest

authorized AudioControl dealer and let them install it. Life

is too short to be tearing your hair out over your car audio

system.

The crossover

adjustement pot selects the frequency that the front/rear

outputs of your THREE.2 will play down to and where your

subwoofer will begin playing. There is a bypass (off/on) switch

that lets you defeat the crossover, so if your system does not

use a separate subwoofer, all your ampliﬁers will get a full

range signal from the front/rear outputs. The subwoofer

output will remain low passed at the selected frequency.