Design Features - Soundstream Reference 414s Owner's Manual And Installation Manual

DESIGN FEATURES

Uncompromising Design and Construction including mil-spec glass
l
epoxy circuit boards and high current custom gold-plated solid brass
connections that will accept up to 4 gauge power/ground wire.
Auto High CurrentTM - Soundstream's exclusive circuit which
l
automatically customizes your amplifier to its particular
application-High Current, low impedance loads (multiple subwoofers.
less than 2 ohms mono) or High Power, higher impedance loads (2
ohms mono and up).
Coherent StereoTMIMixed Mono selection for either "pure" stereo
l
operation or mixed mono for simultaneous stereo and mono.
l
of the output section incorporates multiple output transistors instead of
a few for faster, stronger power delivery.
sandwiched between the circuit board and the heatsink in a design
called ChassisinkTM to ensure cool, efficient amplifier operation.
l
are located near one another, connected by thick, wide PCB traces,
which ensures rapid, high current delivery The entire power supply is
isolated on one side of the circuit board while the audio stage is located
opposite it, guaranteeing minimal noise.
. Ultra-Low ESR Capacitance Bank Multiple small input power
capacitors are used to provide lower ESR (Equivalent Series
Resistance), which means more power in and out fasfer.
too hot. In the unlikely event the REFERENCE amplifier reaches 85"
C, it will gradually roll back its average power (without affecting the
dynamics). Once the amplifier has cooled off, it returns to full power
output. If overheating should continue, a second thermal sensing
protection circuit will shut off the amplifier if the heatsink reaches 95" C.
Fault Monitor LED on the top panel notifies you of blown power supply
l
fuses.
The transistors are
4
. l/2 ohm Drive Ability - (Reference644s
amplifier is designed to drive virtually any load-all the way down to l/2
ohm stereo (1 ohm mono).
amplifier is designed to drive virtually any load--all the way down to 1
ohm stereo (Zohm mono).
. Dual Discrete Class A Drive Stages -Over 12 times the drive current
of most amplifiers, which maintains performance into low impedance
loads.
. Drive Delay TM Muted Turn-on/off Circuit - A unique circuit which
completely eliminates any amplifier-related turn-on/off noises.
. Flexible Dual Input Level Sensitivity (Reference644s
2 voltage ranges; from 200 mV to 2.0 V and from 500 mV to 5.0 V.
unit. The Reference414s has a single input range, varying from 200
. Differential Balanced Input Design for added immunity to noise
caused by component and vehicle electrical system interaction when
using unbalanced RCA inputs.
. True Balanced Input (Reference644s only) for professional-quality
performance and noise cancellation. The 6-pin DIN plug carries (+)
and (-) signal information for left and right channels, audio ground, and
Transmitters.
. A/RBASSTM Upgradable - This feature allows RF remote control level
adjustment while the low pass filter on the amplifier's internal crossover
is being used.
only) The REFERENCE6445
only) accepts