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The 700RB Series is a flexible, state-of-the-art Bass
Amplifier, designed to deliver maximum performance,
and be simple to operate. This is accomplished
.
through a few, very important features:
·
Extremely high current power supply and
power amp circuitry, gets the sound out of
.
your head.
·
Bi-Amp sound, two power amps, 380 Watts for
. .
the woofer, and 50 Watts for the horn.
·
Electronic crossover, seamless two way sound.
·
Four, Bass specific bands of active
.
equalization for precise tone control.
·
Three voicing filters for shaping and
.
customizing your sound.
·
Balanced direct output with level control
. .
eliminates need for a direct box.
·
Continuously variable fan cooling.
·
Designed and Built in the U.S. for years of
reliability and quality service.
When a power amplifier is pushing several speaker cones,
and a high-power transient like a string slap comes
along, the amp has to tap into a large power reserve to
maintain cone control. It's kind of like grabbing a swing
at the bottom of it's travel and trying to push it the other
way - it could knock you over. If the amplifier doesn't
have this ability, the sound is unresponsive and less out
front. The amp loses it's punch and feel at higher
playing levels. Instead of responding to your every
command, the amplifier simply cuts those transients off,
leaving you with the feeling that something is missing
in your sound.
Since most amplifiers have limited output current
capacity, they need "current limiting circuits" to
protect against self-destruction. High-power tran-
sients trigger these circuits, which rob the amplifier of
it's ability to control speaker cones. This creates a
mushy, unresponsive feel to your sound. The 700RB
Series has extremely high current capacity, so it
doesn't need current limiting circuits for over-load
protection.
There is nothing in the 700RB Series power amp to
come between you and your sound except faithful,
raw power.
Bass players have always liked the growl they get from
slight overdrive. In GK amps this comes partly from
the boost circuits and partly from the power amp. The
problem is that growl, sounds great through woofers, and
horrible through horns. In the typical full range system
with a passive crossover, there is no way to get growl and
keep the definition that the horn provides. The horn
always has to be turned down. In a Bi-Amp system like
the 700RB Series, the woofer and the horn, each have
their own power amp, allowing us to get growl in the
woofer only, while keeping the horn sound crystal clear.
Now you can over-drive the woofer as much as you want,
and leave the horn all the way up, keeping the definition
it brings to your sound. Running the 700RB Series in Bi-
Amp mode through a GK-RBH cabinet, for the first time
allows full access to the benefits of Bi-Amp sound. This is
the reason the 700RB Series is a Bi-Amp, and it is the
reason you will be able to explore an entirely new
territory of Bass sound.
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