Alpine 3547 Service Manual page 4

3547
FEATURES
MULTIMODE CAPABILITY
Multimode capability allows the 3547 to operate in its 2-channel stereo,
and bridged mono modes simultaneously. This way, the amplifier can
power.a pair of satellite speakers, along with a bridged mono subwoofer,
and/or a true center channel speaker.
3, 2, OR 1 CHANNEL OPERATION
Thanks to its Multimode capability, the 3547 can simultaneously drive a
pair of satellite speakers in stereo, along with a bridged mono subwoofer
{and/or center channel speaker) for a total of 3 channels. In addition to
Multimode, the 3547 can be driven in a conventional 2-channel mode, or
its two channels can be bridged into a single channel of considerably
higher power output.
ACTIVE DIVIDING NETWORK
A built-in, switchable electronic crossover network at 80 Hz, 18 dB oer
octave, can be used to set up the amplifier for low-pass (subwoofer) or
high-pass (tweeter/midrange satellite) applications. This network can also
be switched off to allow full-range signal amplification.
DUO-B FEEDBACK CIRCUITRY
Alpine's proprietary Duo-Beta is a technologically advanced form of
feedback circuitry. Duo-Beta supplies low negative feedback throughout
the audio frequency bandwidth and very high negative feedback at DC.
This stabilizes the amplifier, removes DC offset, and offers excellent total
harmonic distortion (T.H.D.) characteristics. It also provides low transient
intermodulation distortion (T.I.M.), excellent slew rate, stability, and
musicality.
NO CURRENT LIMITING
Absence of current limiters in the audio section ensures low T.1.M.,
excellent transient response, and superb sonic quality.
S.T.A.R. CIRCUITRY
The Alpine-developed Signal Transit for Accurate Response circuit
topology improves sonic properties by reducing interaction between
different sections of the circuitry.