GP600 - Subwoofer Crunch - Free user manual and instructions

Product Type	Amplified subwoofer enclosure
Brand	Crunch
Model	GP600
Dimensions (L x H x D)	210 x 76 x 285 mm
Weight	2.5 kg (approx)
Power Supply	12 V (9 – 15 V), negative ground
Fuse	15 A
RMS Output Power	1 x 100 W
Max Output Power	1 x 200 W
Speaker	13 x 20 cm (5" x 8")
Adjustable Low-Pass Filter	50 – 150 Hz
Phase	0° / 180°
Adjustable Bass Boost	0 – 12 dB @ 45 Hz
Audio Inputs	RCA and high-level (HI LEVEL)
Auto Turn-On	Yes (DC offset detection)
Remote Bass Level Control	Yes (included)
Protections	Overheating and short circuit (red LED)
Maintenance and Cleaning	Clean with a soft, dry cloth. Avoid water and chemicals.
Safety	Disconnect the battery before installation. Use a fuse near the battery (distance < 30 cm).
Spare Parts and Repairability	Replaceable 15 A fuse. For other repairs, contact a specialist.
Installation	Recommended by a specialist. Mount away from shocks, vibrations, dust, and dirt.
General Information	Active subwoofer for 12 V audio system. Manual available in several languages.

Frequently Asked Questions - GP600 Crunch

How to connect the power supply of the GP600 subwoofer?

First connect the GND terminal [1] to the negative battery terminal, then the +12V terminal [2] via a cable with an integrated fuse [3] placed near the battery (< 30 cm). Finally, connect the REM cable [5] to the remote output of the car stereo.

Can I use both the RCA input and the high-level input simultaneously?

No, never. Use either the RCA inputs [6] or the HI LEVEL input [7]. Simultaneous use can seriously damage the unit.

How does the auto turn-on (Auto Turn On) work?

Set the AUTO TURN ON switch [8] to ON. The amplifier detects a voltage increase (6 V) on the high-level input when the source turns on, and turns on automatically. It turns off when the source turns off. The REM connection is not needed in this mode.

How to adjust the input sensitivity (LEVEL INPUT)?

Set the car stereo volume to halfway, then adjust the LEVEL INPUT control [9] to achieve a moderate sound level. This provides sufficient power headroom and a good signal-to-noise ratio.

What is the purpose of the phase switch (PHASE)?

The PHASE switch [11] allows setting the phase to 0° or 180° to synchronize the subwoofer with other speakers according to the vehicle's acoustics.

How to adjust the low-pass filter (LOW PASS)?

Adjust the LOW PASS control [12] between 50 and 150 Hz to set the cutoff frequency. Thus, only low frequencies are reproduced by the subwoofer.

How to use the Bass Boost?

Turn the BASS BOOST control [10] to increase the bass level from 0 to 12 dB at 45 Hz. Caution: do not overuse to avoid distortion.

What does the red PROTECT LED mean?

The PROTECT LED [15] lights up red in case of overheating or short circuit. The amplifier turns off automatically. Once the problem is fixed, it will work again.

How to connect the remote bass level control?

Connect the provided remote control to the REMOTE connector [14] using the included cable. You can then adjust the bass level from the driver's seat.

What are the installation precautions?

Disconnect the battery before installation. Mount the unit away from shocks, vibrations, dust, and dirt. Keep audio cables away from power cables. Use a 15 A fuse near the battery.

USER MANUAL GP600 Crunch

Black CRUNCH audio amplifier device with visible buttons and speaker grille (no text or symbols on main body)

GP600

ACTIVE SUBWOOFER SYSTEM

BENUTZERHANDBUCH

OWNER'S MANUAL

INHALTSVERZEICHNIS TABLE OF CONTENT TABLE DES MATIÈRES SOMMARIO INDICE

graph LR
    A["6"] --> B["LOW LEVEL INPUT"]
    B --> C["R"]
    B --> D["L"]

HOCHPEGELEINGÄNGE

7 HI LEVEL INPUT L+ L- weiβ = L + schwarz/weiβ = L - grau = R + grau/schwarz = R -

AUTOMATISCHE EINSCHALTFUNKTION

Please read the user's manual carefully before the installation and the first operation of the amplifier.

SPECIFICATIONS

Subwoofer	13 x 20 cm (5" x 8")
Output Power RMS	1 x 100 W
Output Power Max	1 x 200 W
Lowpass Filter	50 – 150 Hz
Phase Shift	0° / 180°
Bass Boost	0 – 12 dB @ 45 Hz
Operating Voltage	+12 V (9 – 15 V), negative ground
Fuse Rating	15 A
Dimensions (B x H x L)	210 x 76 x 285 mm

All Specifications are subject to change

IMPORTANT NOTES PRIOR TO INSTALLATION

• This device is only suited for a 12 volt system with negative ground.
• 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.
• Avoid any damage or removing of the components of the vehicle like wires, cables, board computer, seat belts, gas tank or the like.

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. Use the enclosed cable plug to connect each terminal.

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 +12V terminal has been sufficiently specified.

First connect the GND terminal [1] 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 [2] of the amplifier with the battery by using an appropriate cable including an in-line fuse. This fuse [4] should be located very close to the battery [3]; 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 [5] from the head unit with the amplifier's REM terminal. A cable with a cross-section of 0.5 mm^2 is adequate.

POWER GND REM +12V 1 2 3 4 5

AUDIO SIGNAL CABLES

When installing the audio cables between the RCA outputs of the head unit and the RCA inputs of the amplifier [6], 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 of the vehicle on the right side or vice versa. This prevents interferences due to crosstalk into the audio signal.

graph LR
    A["6"] --> B["LOW LEVEL INPUT"]
    B --> C["R"]
    B --> D["L"]

HIGH LEVEL INPUTS & AUTO TURN ON

The high level inputs under HI LEVEL INPUT [7] is suitable to connect the device input with speaker wires, if your head unit is not equipped with pre-amplifier RCA outputs. Extend therefore every regarding speaker cable from your head unit 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 Input jack.

CAUTION: Never use the high level inputs and the RCA inputs at the same time. This may damage the device seriously. Use the enclosed cable plug to connect each terminal.

HI LEVEL INPUT L+ L- white = L + black/white = L - grey = R + grey/black = R -

AUTO TURN ON

Push the AUTO TURN ON switch [8] to ON position. The amplifier detects now a voltage rise (6 Volts) over the connected input signal on the HI LEVEL INPUT [7] when the head unit will be switched on. Hence, the amplifier will also be turned on. As soon as the head unit will be turned off, the amplifier turns also automatically off. In this case the turn-on connection [5] is not needed.

NOTE: The AUTO TURN ON function usually works with 90% of all head units, because they are equipped with "High Power"-outputs. Only with a few older and still existing head units the Auto Turn On function is not working.

8 OFF ON AUTO TURN ON

INPUT SENSITIVITY

Turn the LEVEL INPUT [9] controller of the amplifier to the MIN position. Then turn the volume controller of the head unit to 80 - 90% of its full setting. Now turn LEVEL INPUT [9] clockwise until you hear some distortion. Then turn back LEVEL INPUT [9] slightly until you hear a cleaner sound.

9 LEVEL INPUT MIN MAX

VARIABLE BASS BOOST

By using the BASS BOOST controller [10] you are able to increase the bass enhancement from 0 to 12 dB. ATTENTION: Use the BASS BOOST wisely!

BASS BOOST 10 0dB 12dB

PHASE SWITCH

The PHASE switch [11] allows to switch the phase from 0^ to 180^ to match the output signal with the vehicle's interior acoustic.

VARIABLE LOW PASS FILTER

Set the desired crossover frequency by using the controller LOW PASS [12]. Thus to that only the frequencies below the chosen crossover frequency will be amplified and the subwoofer plays more precisely and efficient.

12 LOW PASS 50Hz 150Hz

With the included bass level cable remote controller [13] allows to adjust the bass level e.g. out of the driver's seat. Connect the remote controller and the REMOTE terminal [14] with the enclosed cable.

CRUNCH BASS LEVEL REMOTE 13 14

PROTECTION CIRCUIT

The PROTECT LED [15] lights up red, when the amplifier is overheated, or a short circuit occurs respective a too low impedance load is connected to the speaker outputs. If this events, the internal built-in protection circuit shuts down the amplifier automatically. The amplifier should work again properly after you have solved the problems.

The POWER LED [16] lights up green, if the amplifier is in operation.

15 —○ PROTECT 16 —○ POWER

6 LOW LEVEL INPUT R L

ENTRÉE HAUT NIVEAU

graph LR
    A["6"] --> B["LOW LEVEL INPUT"]
    B --> C["R"]
    B --> D["L"]

INGRESSO ALTO LIVELLO

CONTROLLO REMOTO DAL LIVELLO DEI BASSI

6 LOW LEVEL INPUT R L

ENTRADAS DE ALTO NIVEL

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