Quantum QM-TWO Owner's Manual - Interconnection
9
IMPORTANT NOTES PRIOR TO INSTALLATION
- This device is only suited for a 12 volt system with negative ground.
- Theradiatedheatwhileoperationrequiressufficientaircirculationattheplaceofinstallation.Itis
veryimportantthattheheatsinkfinsdonothavecontactwithanymetalpartsoranysurfaceswhich
couldimpairaircirculation.Theamplifiermaynotbeinstalledinsmallclosedlocationorspaces
without air circulation (e.g. spare wheel recess or below the vehicle carpeting). We recommend the
installationinthevehicle’strunk.Ensuresufficientprotectionagainstvibrations,dustanddirt.
- Ensurethattheinputandoutputcablesaresufficientlyseparatedfromthepowersupplycables.
Otherwise interferences may occur.
- Ensure the accessibility of the fuse and the operating elements after installation.
- Thereliabilityandperformanceoftheamplifierdependsonthequalityofinstallation.Preferably
consult an expert to install the system, particularly if you want to install several loudspeakers.
POWER SUPPLY AND TURN-ON-CONNECTION
INTERCONNECTION
ATTENTION: Before you start with the installation, disconnect the ground connection from the ve-
hicle’s battery in order to prevent short circuits.
Thepowerwiringwhichisusuallyinstalledinon-boardcarnetworksisnotsufficientforapoweramplifier‘s
demands.MakesurethatthepowerwirestoGNDandtothe+12Vterminalhasbeensufficientlyspecified.A
cable cross section of at least 6 mm
2
mustbeusedtoconnectthebatterytotheamplifier‘sterminals.
FirstconnecttheGNDterminaloftheamplifiertoanappropriategroundconnectionatthechassis.Toensurea
good connection, residue dirt and dust from the connection point. A loose connection may cause malfunctions
or interferences noise and distortion.
Thenconnectthe+12Vterminaloftheamplifierwiththebatterybyusinganappropriatecableincludingan
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 ac-
complished.
Thenconnecttheremoteturn-on-wirefromtheheadunitwiththeamplifier‘sREMterminal.Acablewitha
cross-section of 0.5 mm
2
is adequate.
LOUDSPEAKER CONNECTIONS
- In2-channeloperation(i.e.oneloudspeakeroneachamplifierchannel),theimpedancemust
not be lower than 2 ohms for each speaker
- Inbridgingmode(twoamplifieroutputscombined)theimpedancemustnotbelowerthan4ohms.
- Never connect loudspeaker cables with the ground of the chassis or the +12 V supply voltage.
Iftheamplifierisoperatedwithatoolowimpedanceorincorrectlyused,theentiresoundsystemmaybedam-
aged. This means a warranty void in such cases.