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GTX680

COAXIAL SPEAKERS

INSTRUCTION MANUAL

WARNING

Continuous, excessive exposure to sound pressure levels in excess of 85dB 

can cause hearing loss. While BLAUPUNKT sound systems are capable of 

producing sound pressure levels greater than 85dB, they are also designed 

for enjoyment at reasonable levels. Please observe all local sound ordinances 

while listening to your BLAUPUNKT sound system.

Dimensions:

Specifications:

Features:

Mounting:

Troubleshooting:

If you start having problems with distorted sound or loss performance after 

installing your subs, you can follow the instructions below to try and locate what is 

causing the problem.

1). If you have any distorted sound, loss of performance, or rattling from your subs, 

check the connections running from your amplifier or other processors to the box. 

You will also want to check the connections inside the box to make sure no wires 

have become unhooked or are loose.

2). If the above does not solve the problem, check your enclosure thoroughly to 

see if there are any leaks, cracks, or broken pieces. Any loss of structural integrity of 

your enclosure can cause significant performance loss and distortion.

3). The next step you can take is to remove the subs and look for any burned wire 

leads or separated components. You can normally smell something burning when 

a sub blows or is going bad. Sometimes when you play subs to hard for too long, 

they will start to heat up.

4). If none of the above steps solve the problem, you will want to start looking at 

the other components in the vehicle. Start by checking all connections to and 

from the box, amplifier, source unit, or any other processors you may be using. You 

will need to reference to that particular manufacturer for any setting configura

tions or troubleshooting.

Warning:

Investigate the layout of your automobile thoroughly before drill or cutting any 

holes. Take care when you work near the gas tanks, gas lines, hydraulic lines, and 

electrical wiring. Attach the system securely to the automobile to prevent damage, 

particularly in the event of an accident. Do not mount the system so that the wire 

connections are unprotected or are subject to pinching or damage from nearby 

objects.

The +12V DC power wire must be fused at the battery positive terminal connec

tion. Before making or breaking power connections at the system power terminals, 

disconnect the +12V wire at the battery end. Confrm your radio/head unit or other 

equipment is turned off while connectiong the input jacks and subwoofer termi

nals. 

If you need to replace the power fuse, replace it only with a fuse identical to that 

supplied with the system. Using a fuse of different type or rating may result in 

damage to this system.

Contents

Dimensions............................................................. 3

Features.................................................................... 4

Specifications......................................................... 4

Mounting................................................................. 5

Troubleshooting................................................... 6

Warning................................................................... 6

Front Cover                                                                                                                                     Back Cover                                                                                                                                           Page 1                                                                                                                                            Page 2                             

Page 2

Page 3

Page 4

Page 5

Page 6

Model
Size

 

Impedance
Frequency Response 
SPL (dB-1W/1M)
Power Rating (RMS)
Power Rating (Peak)
Voice Coil
Magnet Weight

GTX680

6”x8” 4-way

4 Ohms

70Hz ~ 20KHz

90dB

120Watts
300Watts

1”

12.4oz

4-WAY COAXIAL SPEAKER

Instruction Manual

GTX680

7

4.2”

5.0”

0.4”x 0.2”

2.5”

3.1”

8” x 5.7”

7.4” x 5.1”

Thank you for purchasing the BLAUPUNKT speaker.  Throughout the years, we have used 

our engineering expertise, craftsmanship, and critical testing procedures to create a 

wide range of audio products that deliver all of the clarity and richness you deserve 

in your motor vechicle. 

For maximum performance, it is recommended that you have your BLAUPUNKT product

installed by a certified installer.  Please read the operation manual carefully before installing

or using this device. keep this manual, your reciept of purchase, and the original box for

future reference.

If after reading this manual, you still have questions regarding your product, we recommend

that you see your nearest BLAUPUNKT dealer

•  High Quality Polyproplene Cone

•  Foam Surrond

•  High Temperature Aluminium Voice Coil

•  Ceramic Magnet

•  Mylar Dome Tweeter

NOTE:  BLAUPUNKT strongly remommneds that you operate your system at low 

volume levels prior to the completed installation of your BLAUPUNKT speakers.

This will allow you to test the subwoofers before permanently securing the speakers 

to your vehicle.

CAUTION:  Make sure that all of the speakers wiring is fully protected from cuts, 

tears, and possible wear.  Any short circuits created from cuts, tears or wear could 

severely damage thesource unit or amplifier.  Make sure all speaker wires easily reach 

the speakers terminal with no stress on the wire or connectors.

IMPORTANT:  Never cut any metal that is an integral part of the vehicle’s safety or 

structural support system.  If you are unsure of the importance of any components 

of your vehicle, it isrecommended that you have your speakers professionally installed.

CHOOSING A LOCATION:  It is always best to plan the complete installation prior to 

attempting to install any product.  The routing of wires, power connections, and 

mounting locations should be planned first.  As with any car stereo installation, all 

work performance should be checked thoroughly and carefully prior to the operation 

of the system.

The placement of your BLAUPUNKT  speakers within your vehicle will greatly effect 

the overall performance of your audio system.  Every model of a car is different,  so 

installation into your vehicle may not be possible without  modification.  Refer to 

your vehicle’s manual for more information about your vehicle’s sound system.

BLAUPUNKT speakers are designed to fit in almost any factory location.  Again, if at all

possible, it is recommended that you use a factory location.  This applies mostly to 

later model cars.  For those earlier models that do not have factory locations or are 

limited to just front speaker, it is recommended that you choose a location with a 

sufficient amount of air space.

If you allow an insufficient amount of air space, the subwoofer may not produce low

frequencies very well.  It is recommended to mount the speaker in the door panels,

kick panels, rear decks, etc. ideally, the speakers should be mounted where it will

be in an enclosed airspace.  This will allow for extended bass response.

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