Bedienungsanleitung JBL BassPro SL (Seite 4 von 38) (Alle Sprachen)

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TUNING BASSPRO

BassPro provides several controls that simplify sonic integration

with virtually any vehicle’s unique acoustic properties. Please read

the following section carefully to familiarize yourself with the

function of each control.

Phase Switch: This switch will reverse the phase of BassPro’s

output with respect to its input. When installing BassPro with an

existing factory or aftermarket system, depending on BassPro’s

location in the vehicle and the distance between it and the other

speakers in the car, changing the setting of the phase switch may

produce a discernable increase or decrease in the amount of

upper bass reproduced. Although the position that yields the

most upper bass is technically correct, you may choose the

position that best suits your taste.

Level Control: This control will adjust the input sensitivity of

BassPro. Use this control to adjust the relative volume (loudness)

of BassPro with respect to the other speakers in the vehicle.

Crossover Control: The crossover control adjusts the amount of

upper bass and midbass information present in BassPro’s output.

After listening to music on the system for a time, fine-tune the

Crossover control setting to achieve a smooth transition from the

BassPro to the rest of the system’s speakers while avoiding a

“hole,” where the sounds that occur between the BassPro and

other speakers seem to drop out.

Bass Boost Control: BassPro’s interaction with the acoustics of

your vehicle may produce a peak or dip in BassPro’s response.

For the vast majority of vehicles, these peaks or dips occur at

about 40Hz – around the frequency of the lowest bass guitar

note. Use the Bass Boost control to correct that peak or dip.

Adjustment between 0dB and +9dB is possible. Although

response without any sharp peaks or dips is technically correct,

you may choose the position that best suits your taste.

Audio Sense Switch:

If you have used the High-Level inputs to

connect the BassPro to your system’s radio/head unit (see Input

Connections, above), set the Audio Sense switch in the “On”

position. This will allow the BassPro to sense voltage on the

speaker inputs and turn itself on when the rest of the audio

system turns on.

Input Load Switch: This switch has an effect only when you

Power

Connections

Fuse

(20A)

High-Level

Input

Remote

Connection

Line-

Level

Inputs

Audio

Sense

Switch

Crossover

Control

Input

Load

Switch

Level

Control

Phase

Switch

Bass

Boost

Control

have used the High-Level inputs to connect the BassPro to your

system’s radio/head unit. For the lowest noise in most

applications, set the Input Load switch in the “High” position. In

some cases, (such as when using the radio’s power fader), the

“Low” position may produce better results.

Remote Connection: This connector is compatible with the

RBC remote volume control (sold separately).

Adjustment sequence

1. Start with Level control set to minimum, the Phase switch set

to “0” and the Crossover and Bass Boost controls rotated to

the 3 o’clock position.

2. Choose program material with substantial bass content and

turn the volume control on your head unit to three-quarters of

its total output (approximately 3 o’clock on rotary controls).

3. Adjust the gain control clockwise until the BassPro’s volume

sounds balanced with the rest of the system.

4. Continue listening, making a mental note of the amount of

upper bass present in your system.

5. Switch the Phase switch to “180” and recheck for upper bass

content. There may be more upper bass, less upper bass, or

there may be no change. The position that provides the most

upper bass is correct, but you may choose either setting

according to your taste.

6. Adjust the Crossover control clockwise or counterclockwise

until the perceived output from BassPro, as heard at the

listening position, contains only low-frequency information;

i.e., you should NOT hear any vocals coming from BassPro

when you are seated in the normal listening position.

7. Adjust the Bass Boost control clockwise or counterclockwise

to suit your taste.

Note: Although this adjustment sequence will in most cases

provide satisfactory tuning, the actual process may include

several readjustments of each of the controls since their settings

will interact with each other. If necessary, consult your authorized

JBL car audio dealer for help in tuning your system.

SPECIFICATIONS

Amplifier Power : 125W RMS

Frequency Response : 35Hz – 120Hz

Fuse : 20A

Maximum Current Draw : 12A

Quiescent Current Draw : <800mA

Input Sensitivity : 0.2V – 2V Line-Level Input

2V – 20V High-Level Input

Crossover Frequency : 50Hz – 120Hz

Crossover Slope : 12dB/octave

Bass Boost : 0dB to +9dB @ 70Hz

Dimensions (W x H x D) : 13-9/16" x 9-7/8" x 2-13/16"

(344mm x 250mm x 71mm)

HARMAN International Industries, Incorporated

8500 Balboa Boulevard, Northridge, CA 91329 USA

JBL is a trademark of HARMAN International Industries, Incorporated, registered in the

appearance are subject to change without notice.

JBL BassPro SL Seite 4

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