Kenwood XR-S17P Car Stereo System User Manual


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AMPLIFIERS WWW.KENWOODUSA.COM
Kings Among Amps
Reference Series eXcelon amplifiers carry over and include the KAC-
X1R mono Class D power amp and the KAC-X4R 4-channel digital
power amp. We’re also bringing back our KAC-X10D Class D amp, the
KAC-X20 2-channel amp, and the KAC-X40 4-channel amp.
Part of our eXcelon Reference
Series, the KAC-X1R mono digital power amp
features Dual Sigma Drive, dual power supply,
and is 1-Ohm capable.
Features include Dual Sigma Drive and DSP technology, and several
eXcelon amps (and the KAC-9104D) are 1-ohm load capable, so when it
comes to system demands, these amps deliver.
Rated at 1200 Watts RMS (2400 Watts max power), the KAC-X1R mono
digital Class D amp uses Dual Sigma Drive technology that provides an
excellent damping factor. Damping factor measures how well an ampli-
fier controls a woofer. The higher the number, the more it limits distortion
caused by unwanted woofer movement.
The Class D Difference
Class D amps give your customers stronger, louder, more chest-thump-
ingbasswithreducedcurrentdemandsthanClassA/Bamps.ClassD
amps are also easier on the vehicle’s electrical system, which means
they are less apt to make the lights dim during bass notes.
For subwoofer applications, Class D amps are efficient and their small
sizeoffersinstallationflexibility.Beforeamplifyinganincomingsignal,a
Class D amp converts the signal to digital. Digital signals can be ampli-
fied very efficiently, so you get a lot more power with less current. Less
inputcurrentreducespowersupplysizeandgenerateslesswasteheat,
thusreducingtheheatsinksize.Theampthenconvertstheamplified
signal back to analog. This process allows Class D amps, like the KAC-
X1R, KAC-X10D, Kenwood KAC-9104D, and KAC-8104D, to crank more
powerthanClassA/Bampsofthesamesize.
Kenwood’s Power Couple
More potent than Brad-jolina and Tom-Kat combined, the dual power
supply on the KAC-1XR and KAC-X4R provide one power supply for
positive current and one power supply for negative current. The result is
a cleaner voltage source, less failure due to short circuit or power loss
due to variances in transformer tolerances, and less transformer noise.
A dual power supply with two
transformers ensures steady
operation, even when the positive
and negative loads are unstable!
The KAC-X4R Reference Series Amplier
is a 4-channel, full range digital amplier.
The Full Range Digital Amp
The KAC-X4R 4-channel amp uses digital amplifier technology in a full
rangeapplicationalongwithauniqueDSP.This600WattRMSamplifier
Talk about your threesome! The KAC-X1R works perfect-
ly with a pair of KFC-XW1200F or KFC-XW1000F shallow-
mount subs. The amplifier is small, easy to install and, in
this configuration, delivers 1200 Watts RMS!
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