Bedienungsanleitung JBL gto 601 1 ii (Seite 6 von 8) (Englisch)

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INSTALLATION AND SETUP

SETTING THE

CROSSOVER(S)

Determine your system plans and set the

crossover mode switch accordingly. If

you plan to use the GTO75.2 II or GTO75.4II

to drive full-range speakers, set the

crossover mode to FLAT and skip to

“Setting Input Sensitivity.”

Initially set the crossover frequency

control midway. While listening to music,

adjust the crossover for the least

perceived distortion from the speakers,

allowing them to reproduce as much

bass as possible.

Systems using a separate subwoofer set

the crossover mode to HP (high pass) for

your full-range speakers. Adjust the

crossover frequency to limit bass and

provide increased system volume with

less distortion.

For subwoofers, choose the highest

frequency that removes vocal information

from the sound of the subwoofer.

If using the GTO75.2

II or GTO75.4 II to drive

a subwoofer(s), set the crossover mode to

LP (low pass).

NOTE: The GTO301.1II, GTO601.1II,

GTO1201.1II and the subwoofer output of

the GTO755.6 II are low-pass only and do

not have a crossover mode switch.

SETTING INPUT

SENSITIVITY

1. Initially turn the INPUT LEVEL control(s)

to minimum (counter clockwise).

2. Reconnect the (–) negative lead to the

vehicle’s battery. Apply power to the

audio system and play a dynamic music

track.

3. On the source unit, increase the volume

control to 3/4 volume. Slowly increase

the INPUT LEVEL control(s) toward three

o’clock until you hear slight distortion

in the music. Then reduce the INPUT

LEVEL slightly until distortion is no

longer heard.

NOTE: After the source unit is on, red LEDs

(on the top panel) will light, indicating the

amplifier is on. If not, check the wiring,

especially the remote connection from the

source unit. Also refer to “Troubleshooting”

on the next page.

REMOTE LEVEL CONTROL

The GTO755.6 II and all three GTO

subwoofer amplifiers have inputs for

an optional remote level control (RLC).

This will allow the amplifier’s input level

to be adjusted from the listening position.

Connect the optional remote level control

using the RJ-11 jack on the side of the

amplifier. Install the control module in the

front of the vehicle within easy reach of

the driver. Under the dash or in the center

console are both suitable locations.

SETTING THE BASS BOOST

The GTO755.6 II, GTO301.1II, GTO601.1II and

GTO1201.1II are all equipped with a bass-

boost control. This allows you to adjust the

bass output of your system at 50Hz up to

12dB and enhance low frequency.

AUX OUTPUT

GTO amplifiers (except GTO755.6 II) are

equipped with full-range outputs that can

be used to connect additional amplifiers.

NOTE: When using the high-level inputs,

the AUX outputs can be used to pass a

line-level signal to another amplifier.

INSTALLING NEON TUBES

(OPTIONAL)

1. Using a Phillips screwdriver, remove all

screws on the amplifier’s output/power

end panel and set them aside.

2. Using a 3⁄32-inch Allen wrench, remove

only the screws on the amplifier’s (top)

clear cover and set them aside.

3. Remove the end panel and slide the

cover off. Set both parts aside.

4. Locate the enclosed hardware bag and

remove the four clips. Each clip has a

square end and a larger round end.

Using a round end, press two clips onto

each neon tube (e.g., Street Glow AN9

or equivalent), as shown in

Figure 13.

5. For each tube, align both clips so the

square ends slide onto an exposed

extrusion edge, as shown in Figure 9.

Do not cover any screw holes. When

installed correctly, each neon tube will

sit under an extrusion and not be visible

when viewed from directly above.

6. Route each neon tube’s power cable

through its respective NEON hole on the

end panel (see

Figure 13).

7. Slide the cover back into place and re-

install its screws. Then, replace the end

panel and reinstall its screws.

8. Finish the installation of the neon tubes

as instructed in their owner’s manual.

Figure 12. Control end panel.

GTO75.2

GTO75.4 II

GTO301.1II, GTO601.1II, GTO1201.1II

GTO75.6 II

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