Gallien-Krueger 700RB/210 Manuale d'uso - Pagina 13

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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.