Volvo Trucks North America, Inc. Date Group No. Page
Service Bulletin 4.2004 392 08 38(47)
Amplifier
W3003014
The purpose of an amplifier is to increase the power of a
voltage or current signal. The output signal of an amplifier
may consist of the same frequencies as the input signal
or it may consist of only a portion of the frequencies of the
input signal, as in the case of a subwoofer or a mid-range
amplifier.
The amplifier provides better sound performance in
general and can be played at higher volume levels without
noticeable distortion. The Delco/Delphi Electronics
amplifier in the VN 770’s High Performance, Premium
speaker package has been tuned with special volume
levels and filters at specific frequencies on all eight
channels to optimize the system components for the
vehicle’s unique acoustics.