Crunch GTO4120 User's manual

GTO 41 20
4-KANAL VERSTÄRKER
4 CHANNEL AMPLIFIER
AMPLIFICATEUR 4 CANAUX
AMPLIFICATORE 4 CANALI
AMPLIFICADOR DE 4 CANALES
INHALTSVERZEICHNIS
TABLE OF CONTENT
TABLE DES MATIÈRES
SOMMARIO
INDICE
DEU
3
ENG
9
FRA
15
ITA
21
ESP
MANUAL DE USO
27
33
DEU
GTO4120
Ausgangsleistung RMS
4 x 70 W an 4 Ohm
4 x 120 W an 2 Ohm
4 x 140 W an 4 Ohm
4 x 240 W an 2 Ohm
Lautsprecherimpedanz
2 – 8 Ohm
10 Hz – 40 kHz (-3 dB)
Klirrfaktor
< 0,2 % (1 kHz)
> 90 dB
0,2 – 6 V
Eingangsimpedanz
Cinch 20 kOhm / High Level 200 Ohm
Hochpassfilter
50 – 250 Hz @ 12 dB/Oktave
Tiefpassfilter
50 – 250 Hz @ 12 dB/Oktave
Bass Boost
+12 V (12 – 16 V), Minus an negativer Masse
40 A
135 x 50 x 210 mm
3
DEU
DEU
- orange
- orange
+ gelb
+ gelb
DEU
ABBILDUNGEN (S. 33-36)
ANSCHLÜSSE UND BEDIENELEMENTE (ABB. 1)
(1)
(2)
(3)
(4)
(5)
(6)
DEU
DEU
8
ENG
Please read the user's manual carefully before the installation and the first
operation of the amplifier.
SPECIFICATIONS
GTO4120
Output Power RMS
4 x 70 W @ 4 Ohms
4 x 120 W @ 2 Ohms
Output Power Max.
4 x 140 W @ 4 Ohms
4 x 240 W @ 2 Ohms
Loudspeaker impedance
10 Hz – 40 kHz (-3 dB)
Total Harmonic Distortion
< 0,2 % (1 kHz)
Signal-to-Noise Ratio
> 90 dB
Input Impedance
RCA 20 kOhms / High Level 200 Ohms
50 – 250 Hz @ 12 dB/Octave
Highpass Filter
50 – 250 Hz @ 12 dB/Octave
Bass Boost
Operating Voltage
+12 V (12 – 16 V), negative ground
40 A
135 x 50 x 210 mm
All Specifications are subject to change
WARRANTY
This product meets the current EU minimum warranty requirements, if purchased in countries of the EU. To ensure your warranty
policy keep your original receipt proofing the date of purchase. Any damage to the product as a result of misuse, abuse, accident,
incorrect wiring, improper installation, alteration of date code or barcode labels, revolution, natural disaster, or any sneaky stuff
because someone messed up, repair or alteration out side of our factory or authorized service centers and any thing else you
have done that you should not have done is not covered. This warranty is limited to defective parts and specifically excludes
any incidental or consequential damages connected therewith.
9
ENG
IMPORTANT NOTES PRIOR TO INSTALLATION
- This device is only suited for the operation in a vehicle.
- This device is only suited for a 12 volt system with negative ground.
- The radiated heat while operation requires sufficient air circulation at the place of installation. It is
very important that the heatsink fins do not have contact with any metal parts or any surfaces which
could impair air circulation. The amplifier may not be installed in small closed location or spaces
without air circulation (e.g. spare wheel recess or below the vehicle carpeting). We recommend the
installation in the vehicle’s trunk. Ensure sufficient protection against vibrations, dust and dirt.
- Ensure that the input and output cables are sufficiently separated from the power supply cables.
Otherwise interferences may occur.
- Ensure the accessibility of the fuse and the operating elements after installation.
- The reliability and performance of the amplifier depends on the quality of installation. Preferably
consult an expert to install the system, particularly if you want to install several loudspeakers.
INTERCONNECTION
POWER SUPPLY AND TURN-ON-CONNECTION
ATTENTION: Before you start with the installation, disconnect the ground connection from the
vehicle’s battery in order to prevent short circuits.
The power wiring which is usually installed in on-board car networks is not sufficient for a power
amplifier's demands. Make sure that the power wires to GND and to the +12 V terminal has been
sufficiently specified. A cable crosssection of at least 16 mm2 must be used to connect the battery to
the amplifier's terminals.
First connect the GND terminal of the amplifier to an appropriate ground connection at the chassis. To
ensure a good connection, residue dirt and dust from the connection point. A loose connection may
cause malfunctions or interferences noise and distortion.
Then connect the +12 V terminal of the amplifier with the battery by using an appropriate cable including
an in-line fuse. This fuse should be located very close to the battery; for safety reasons not more than
30 cm away. Only insert the fuse when the installation, including the connection of the loudspeakers,
has been accomplished.
Then connect the remote turn-on-wire from the headunit with the amplifier's REM terminal. A cable with
a cross-section of 0.5 mm2 is adequate.
If your headunit is not eqquiped with a remote turn-on cable, please check the section ”AUTO TURN
ON” on the following page.
AUDIO SIGNAL CABLES
When installing the audio cables between the RCA outputs of the headunit and the RCA inputs of the
amplifier, the audio and power supply cables should, if possible, not be routed along the same side of
the vehicle. We recommend a separated installation, e.g. routing the power cable through the cable
channel on the left side and the audio cables through the cable channel on the right side or vice versa.
This prevents interferences due to crosstalk into the audio signal.
10
ENG
HIGH LEVEL INPUTS
The HIGH LEVEL INPUTS (Fig. 1, 1) are suitable to connect the amplifier inputs with speaker wires,
if your headunit is not equipped with pre-amplifier RCA outputs. Extend therefore every regarding
speaker cable from your headunit with appropriate speaker cables from your car audio retailer to the
mounting location of the amplifier. Then connect the each matching loudspeaker cable with the cables
of the included HIGH LEVEL jacks like described below.
NOTE: Never use the HIGH LEVEL INPUTS and the RCA inputs at the same time. This may damage
the amplifier seriously. The loudspeaker cables of the HIGH LEVEL INPUTS must have no contact to
the ground (GND).
+ blue
- white
= speaker - right - CH2 - positive
+ blue
- white
= speaker - right - CH3 - positive
= speaker - right - CH2 - negative
- orange
= speaker - left - CH1 - negative
- orange
= speaker - left - CH4 - negative
+ yellow
= speaker - left - CH1 - positive
+ yellow
= speaker - left - CH4 - positive
= speaker - right - CH3 - negative
AUTO TURN ON
The amplifier detects a voltage rise (6 Volts) with a so called ”DC Offset” over the connected input
signal on the HIGH LEVEL INPUTS (Fig. 1, 1) when the headunit will be switched on. Hence, the
amplifier will also be turned on. As soon as the headunit will be turned off, the amplifier turns also
automatically off. In this case the turn-on connection (REM, Fig. 2, 2) is not needed.
Note: The Auto Turn On function usually works with 90% of all headunits, because they are equipped
with ”High Power”-outputs. Only with a few older and still existing headunits the Auto Turn On function
is not working.
LOUDSPEAKER CONNECTIONS
- In 4-channel operation (i.e. one loudspeaker on each amplifier channel), the impedance must
not be lower than 2 ohms for each speaker
- In bridging mode (two amplifier outputs combined) the impedance must not be lower than 4 ohms
for the bridged output.
- Never connect loudspeaker cables with the ground of the chassis or the +12 V supply voltage.
If the amplifier is operated with a too low impedance or incorrectly used, the entire sound system
may be damaged. This means a warranty void in such cases.
SIGNAL OUTPUTS TO CONNECT AN ADDITIONAL AMPLIFIER
Due to its compact design, the amplifier has no signal outputs to supply additional amplifiers, such as
a mono subwoofer amplifier. Split in this case the input signal with a suitable Y-connector to provide
the input signal to both amplifiers.
OPERATING ELEMENTS
INPUT SENSITIVITY
Turn the input level controls (INPUT LEVEL, Fig. 1, 3) for each channel pair on the amplifier to the MIN.
position. Turn then the volume control of the headunit to 80% - 90% of its maximum volume. Now turn
slowly the input level control on the amplifier (INPUT LEVEL, Fig. 1, 3) in a clockwise direction until
you hear some distortion, then turn back slightly until the distortion is not audible anymore.
11
ENG
VARIABLE HIGHPASS FILTER
If the amplifier is to be used for satellite loudspeakers (mid-range/tweeter loudspeakers), set the switch
(X-OVER, Fig. 1, 5) to "HPF" or for bigger loudspeakers (>20 cm) to ”FULL”. Set the desired crossover frequency on controller (LPF/HPF, Fig.1, 6). Thus to that only the frequencies above the chosen
cross-over frequency will be amplified. This effectively minimizes distortions and overloads at lower
frequencies. A good point to start is at 125 Hz.
VARIABLE LOWPASS FILTER
If the amplifier is used to drive a subwoofer, set the switch (X-OVER, Fig. 1, 5) to "LPF". Set the desired
cross-over frequency by using the controller (LPF/HPF, Fig. 1, 6). Thus to that only the frequencies
below the chosen cross-over frequency will be amplified and the subwoofer plays more precised and
efficient. A good point to start is at 125 Hz.
VARIABLE BASS BOOST
By using the controller (BASS BOOST, Fig.1, 4) you are able to increase the bass level. The range is
between 0 and 12dB.
Note: Use the bass boost wisely. A too high bass boost could permanently damage the speakers.
PROTECTION CIRCUIT
The LED (POWER, fig. 2, 7) lits up, if the amplifier is in operation.
The LED (PROTECTION, fig. 2, 7) lits up, when the amplifier is overheated, or a short circuit occurs
resp. a too low impedance load is connected to the speaker outputs. If this happens, the internal builtin protection circuit shuts down the amplifier automatically. The amplifier should work again properly
after you have solved the problems.
FIGURES (P. 33-36)
CONNECTIONS AND CONTROLLERS (FIG. 1)
(1)
(2)
(3)
(4)
(5)
(6)
High level signal input for loudspeaker outputs from the headunit.
RCA audio signal inputs from the headunit
Gain level controller
Bass boost controller
Selectors LPF (Lowpass) / FULL / HPF (Highpass)
Lowpass/Highpass filter controllers
POWER SUPPLY AND TURN ON CONNECTION (FIG. 2)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
+12 V terminal for the positive-connection of the battery
REM terminal for the turn on connection
GND terminal for the ground
Vehicle’s battery
In-Line Fuse (not included in the scope of delivery)
Turn on wire from the headunit or the electrical antenna
Protection-LED and Power-LED
12
ENG
4-CHANNEL OPERATION STEREO (FIG. 3)
If you want to run the amplifier with 4 line output channels from the headunit to drive 4 loudspeakers,
in stereo connect the following setup:
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
RCA audio signal input from the headunit, CH1 / FRONT LEFT
RCA audio signal input from the headunit, CH2 / FRONT RIGHT
RCA audio signal input from the headunit, CH3 / REAR LEFT
RCA audio signal input from the headunit, CH4 / REAR RIGHT
Stereo high level input for loudspeaker outputs from the headunit FRONT L/R
Stereo high level input for loudspeaker outputs from the headunit REAR L/R
Loudspeaker CH1 / FRONT LEFT (2 - 8 Ohms)
Loudspeaker CH2 / FRONT RIGHT (2 - 8 Ohms)
Loudspeaker CH3 / REAR LEFT (2 - 8 Ohms)
Loudspeaker CH4 / REAR RIGHT (2 - 8 Ohms)
NOTE: (1 – 4) must not be operated simultaneously with (5 & 6).
3-CHANNEL OPERATION STEREO/MONO (FIG. 4)
If you want to run the amplifier with 4 line output channels from the headunit to drive 2 loudspeakers
in stereo and a subwoofer, connect the following setup:
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
RCA audio signal input from the headunit, CH1 / FRONT LEFT
RCA audio signal input from the headunit, CH2 / FRONT RIGHT
RCA audio signal input from the headunit, CH3 / REAR LEFT or SUB OUT
RCA audio signal input from the headunit, CH4 / REAR RIGHT or SUB OUT
Stereo high level input for loudspeaker outputs from the headunit FRONT L/R
Stereo high level input for loudspeaker outputs from the headunit REAR L/R
Loudspeaker CH1 / FRONT LEFT (2 - 8 Ohms)
Loudspeaker CH2 / FRONT RIGHT (2 - 8 Ohms)
Subwoofer CH3/4 (4 - 8 Ohms)
NOTE: (1 – 4) must not be operated simultaneously with (5 & 6).
2-CHANNEL OPERATION MONO (FIG. 5)
If you want to run the amplifier with 2 line output channels from the headunit to drive 2 subwoofers in
mono, connect the following setup:
(1)
(2)
(3)
(4)
RCA audio signal input from the headunit, CH1 / FRONT LEFT or SUB OUT 1
RCA audio signal input from the headunit, CH2 / FRONT RIGHT or SUB OUT 2
RCA audio signal input from the headunit, CH3 / REAR LEFT or SUB OUT 1
RCA audio signal input from the headunit, CH4 / REAR RIGHT or SUB OUT 2
NOTE: Split the subwoofer signal coming from the headunit by using two Y-connectors, to supply a
audio signal to the connections (1 - 4).
(5)
(6)
(7)
(8)
Stereo high level input for loudspeaker outputs from the headunit FRONT L/R
Stereo high level input for loudspeaker outputs from the headunit REAR L/R
Subwoofer 1 CH1/2 (4 - 8 Ohms)
Subwoofer 2 CH3/4 (4 - 8 Ohms)
NOTE: (1 – 4) must not be operated simultaneously with (5 & 6).
13
ENG
TROUBLESHOOTING
If you are having problems after installation follow the Troubleshooting procedures below.
Procedure 1:
Check Amplifier for proper connections.
Verify that POWER LED is on. If POWER LED is on skip to Step 3, if not continue.
1. Check external in-line fuse on battery positive cable. Replace if necessary.
2. Verify that ground connection is connected to clean metal on the vehicle’s chassis. Repair/replace if necessary.
3. Verify there is 12 to 16 Volts present at the positive battery and remote turn-on cable.Verify quality connections for both cables at amplifier,
stereo, and battery/fuseholder. Repair/replace if necessary.
Procedure 2:
PROTECT LED is on.
1. If the PROTECT light is on, this is a sign of a possible short in the speaker connections. Check for proper speaker connections and use a
multimeter to check for possible shorts in the speaker wiring. Too low speaker impedance may also cause PROTECT to light.
This can also be a sign of driving the amplifier at very high power levels without adequate airflow around the amplifier. Shut off the system
and allow amplifier to cool down. Check that the vehicle charging system is maintaining proper voltage.
If the previous items do not solve the problem, a fault may be in the amplifier.
Procedure 3:
Check Amplifier for audio output.
1. Verify good RCA input connections at stereo and amplifier. Check entire length of cables for kinks, splices, etc.
Test RCA inputs for AC volts with stereo on. Repair/replace if necessary.
Procedure 4:
Check Amplifier for a popping noise while turning on.
1. Disconnect input signal to amplifier and turn amplifier on and off.
2. If the noise is eliminated, connect the REMOTE lead of amplifier to source unit with a delay turn-on module.
OR
1. Use a different 12 Volt source for REMOTE lead of amplifier (i.e. battery direct).
2. If the noise is eliminated, use a relay to isolate the amplifier from noisy turn-on output.
Procedure 5:
Check Amplifier if you experience excess Engine Noise.
1. Route all signal carrying wires (RCA, Speaker cables) away from power and ground wires.
OR
2. Bypass any and all electrical components between the headunit and the amplifier(s). Connect stereo
directly to input of amplifier. If noise goes away the unit being bypassed is the cause of the noise.
OR
3. Remove existing ground wires for all electrical components. Reground wires to different locations.
Verify that grounding location is clean, shiny metal free of paint, rust etc.
OR
4. Add secondary ground cable from negative battery terminal to the chassis metal or engine block of vehicle.
OR
5. Have alternator and battery load tested by your mechanic.Verify good working order of vehicle electrical system including distributor,
spark plugs, spark plug wires, voltage regulator etc.
14
FRA
GTO4120
4 x 70 W @ 4 Ohm
4 x 120 W @ 2 Ohm
4 x 140 W @ 4 Ohm
4 x 240 W @ 2 Ohm
2 – 8 Ohm
10 Hz – 40 kHz (-3 dB)
< 0,2 % (1 kHz)
Rapport signal/brut
> 90 dB
RCA 20 kOhm / High Level 200 Ohm
50 – 250 Hz @ 12 dB/Octave
50 – 250 Hz @ 12 dB/Octave
Booster des basses
40 A
135 x 50 x 210 mm
15
FRA
FRA
FRA
ALIMENTATION ÉLECTRIQUE ET ENCLENCHEMENT (FIG. 2)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
FRA
FRA
20
ITA
GTO4120
4 x 70 W @ 4 Ohm
4 x 120 W @ 2 Ohm
4 x 140 W @ 4 Ohm
4 x 240 W @ 2 Ohm
2 – 8 Ohm
10 Hz – 40 kHz (-3 dB)
< 0,2 % (1 kHz)
> 90 dB
RCA 20 kOhm / High Level 200 Ohm
50 – 250 Hz @ 12 dB/Ottava
50 – 250 Hz @ 12 dB/Ottava
Bass Boost
Fusibile
40 A
135 x 50 x 210 mm
21
ITA
ITA
ITA
FIGURE (P. 33-36)
CONNESSIONI E CONTROLLI (FIG. 1)
(1)
(2)
(3)
(4)
(5)
(6)
ALIMENTAZIONE ELETTRICA E IMPIANTO D’ACCENSIONE (FIG. 2)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
ITA
ITA
26
ESP
GTO4120
Potencia de salida RMS
4 x 70 W @ 4 Ohmios
4 x 120 W @ 2 Ohmios
Potencia de salida Max.
4 x 140 W @ 4 Ohmios
4 x 240 W @ 2 Ohmios
Impedancia de altavoces
10 Hz – 40 kHz (-3 dB)
< 0,2 % (1 kHz)
> 90 dB
RCA 20 kOhmios / High Level 200 Ohmios
50 – 250 Hz @ 12 dB/octava
50 – 250 Hz @ 12 dB/octava
Bass Boost
Suministro eléctrico
40 A
Dimensiones (A x A x P)
135 x 50 x 210 mm
27
ESP
ESP
+ azul
- blanco
- naranja
- naranja
ESP
CONEXIONES DE ALIMENTACIÓN Y ENCENDIDO A DISTANCIA (FIG. 2)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
ESP
Nota: (1 - 4) no debe ser operado simultáneamente con (5 & 6)
Nota: (1 - 4) no debe ser operado simultáneamente con (5 & 6)
ESP
32
1
2
3
1
2
5
4
6
2
2
7
1
3
6
5
4
33
+
–
3
3
5
1
HPF
FULL
HPF
4
2
FULL
6
9
10
2 - 8 Ohms
2 - 8 Ohms
7
8
2 - 8 Ohms
2 - 8 Ohms
34
4
2
5
1
HPF
FULL
LPF
3
2
6
9
4 - 8 Ohms
7
8
2 - 8 Ohms
2 - 8 Ohms
35
5
3
5
1
LPF
LPF
4
2
6
8
7
4 - 8 Ohms
4 - 8 Ohms
36
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