Gallien-Krueger Micro Lead series Manuel d'utilisation - Page 3

Parcourez en ligne ou téléchargez le pdf Manuel d'utilisation pour {nom_de_la_catégorie} Gallien-Krueger Micro Lead series. Gallien-Krueger Micro Lead series 8 pages. Micro lead series

Imprimer la page

Gallien-Krueger Micro Lead series Manuel d'utilisation

Front Panel Features

(1) Input Jack

Accepts a 1/4'' phone plug and can be driven by a

variety of instruments; however, the internal

electronics have been optimized for use with an

electric guitar.

(2) Channel Select Switch

Allows you to switch between the Lead and Clean

channels. The RF2 Foot Controller (on the ML/S)

or the RFG4 Foot controller (on the ML/E) will

switch channels when this switch is in the "in" position

and the footswitch is plugged in.

(3) Boost Control

This unique feature works like a third footswitchable

channel. It controls the amount of gain before the

first overdrive stage. Turning clockwise increases

the gain level. It is footswitchable with the RF2

Foot Controller (on the ML/S) or the RFG4 Foot

Controller (on the ML/E). You can achieve two dif-

ferent, footswitchable lead sounds by setting the

Gain Level control first for your low overdrive

sound, then setting the Boost control for your

extreme overdrive sound. The Boost can then be

taken in and out of the circuit with the footswitch.

The Boost has no effect when the Gain Level(4) is

set all the way up (clockwise).

(4) Gain Level

Controls the gain of the first and second overdrive

stages using a dual potentiometer. Turning clock-

wise will increase the amount of "saturation" in the

gain stages, producing fuller harmonics and

increased sustain. The gain of the first overdrive

stage will be increased when the Boost control is

used.

(5) Lead Channel Indicator LED

When lit, the Lead channel is activated.

(6) Lead Master

Controls the volume of the lead channel. It affects

the Send (12), Headphones(17), and Balanced

Outputs(30).

(7) Shape Control

This is a passive midrange control (post overdrive).

It effectively varies the midrange frequencies in the

Lead channel, allowing a variety of lead voicings to

be attained easily. Rotating clockwise boosts the

midrange.

(8) Clean Channel Indicator LED

When lit, the Clean channel is activated.

(9) Clean Channel Volume Control

Controls the volume of the Clean channel. It affects

the Send(12), Headphones(17), and Balanced

Outputs(30).

(10) 4-Band Active Equalizer

Provides boost and cut over four different frequency

bands. Each band has a specially selected Q and

center point optimizing it for a particular guitar

spectrum.

(11) Output Level Control

Adjusts the level of the signal being sent to the

internal power amplifier(s) and headphones, affecting

the Speaker Outputs(19) and the Headphone

Output(17). The Balanced Outputs(30) are not

affected.

(12,13,13E) Effects Loop

Provides a means of adding in-line effects. The

Send(12) can drive most standard foot and rack

mountable effects. (see Sample Hookups)

The Return(13) on the ML/S is switchable, allowing

you to return a regular mono signal with a standard

1/4'' phone plug or a stereo signal using a stereo

1/4'' stereo phone plug. The Stereo/Mono

Switch(14) must be in the appropriate position to

take advantage of the return's mono/stereo capability.

If the send signal should overdrive the outboard

effects (causing unwanted distortion), keeping the

Output Level greater than the 1 o'clock position

will usually solve the problem.

The Effects Loop comes after the Channel (1-9,23)

and Equalization (10) stages and before Output

Level (11) and line outputs (15&18) on the ML/S

and ML/E. The internal effects (24-28) and

Balanced Outputs are also post effects Loop on the

ML/E (see Block Diagram).

(14) Return and Line Out Stereo/Mono Switch

(ML/S only)

Affects the Return(13) and Line Out (15). In the

"Mono" position, the Return and Line Out accept a

standard 1/4'' phone plug and accept (Return) or

provide(Line Out) a mono signal. In the "Stereo"

position, the Return and Line Out accept a stereo

1/4'' phone plug and accept (Return) or

provide(Line Out) a stereo signal when using out-

board stereo effects through the Effects Loop.

If the Effects Loop and Line Out are not being used.

The position of this switch is not important.

(15) Line Out (stereo/mono) (ML/S only)

Provides a line level signal that is switchable

mono/stereo to take advantage of the stereo capa-

bility of the Effects Loop Return. When used in the

"Mono" mode, it accepts a standard 1/4'' phone

plug. When used in the "Stereo" mode, it accepts a

stereo 1/4'' phone plug. Unless you are using stereo

outboard effects through the Effects Loop and the

Stereo/Mono Switch(14) is in the "Stereo" position,

only a mono signal will be present.

(16,16E) RF2 and RFG4 Foot Controller Jacks

Provides a means to hook-up the optional

footswitch for your amplifier. The ML/S accepts

the RF2 two-button Foot Controller, allowing

remote Channel Switching(Lead/Clean) and Boost

On/Off. The RF2 requires any standard 1/4'' stereo

phone cord for operation (available from GK (Part

#304-2500-0). The ML/E accepts the RFG4 four-

button Foot Controller, allowing remote Channel

Switching (Lead/Clean), Boost On/Off (when in the

Lead channel) or Compressor On/Off (when in the

Clean channel), Reverb On/Off, and Chorus

On/Off. The RFG4 requires any standard 5-pin

DIN(MIDI) cable for operation. Please make sure

that the 5-pin DIN cable has all five wires, not two

or three.

(17) Stereo Headphone Output

Accepts a stereo 1/4'' phone plug, delivering a

stereo signal for use with any standard headphones.

Headphone Output level is controlled by the Output

Level(11).

Rear Panel Features

(18) Right/Stereo Line Out

Provides a line level signal (post Output Level)for

interfacing with outboard power amplifiers: Right

Line Out for mono internal power units. Stereo Line

Out for stereo internal power units. (see Sample

Hookups)

....on Mono Power Units:

Plugging into the Right Line Out splits the preamp

signal; "left" going to the internal 130 watt power

amplifier and "right" going to the Right Line Out.

By connecting this line out signal to an external

power amplifier (in this case the GK ML/P), you

have created a 130 watt per channel stereo guitar

system. A standard 1/4'' phone plug is required for

hook up. A slight volume loss in the internal channel is

normal.

...on Stereo Power Units:

A stereo signal is provided for connecting to an

external stereo power amplifier or two external

mono power amplifiers (the GK 265ML/P or

130ML/P are recommended for these applications).

Any standard stereo 1/4'' plug is required for

hookup.

(19) External Speaker Outputs

Allows external speakers to be driven by the internal

power amplifier(s). For optimum performance and

to avoid damaging your amplifier, use the following

minimum external speaker impedance:

HEADS:

ML/S & ML/E Mono Heads :

4 Minimum impedance Total

(1x4 speaker, 2x8 speakers. Or 4x16 speakers)

ML/S & ML/E Stereo Heads:

8 Minimum Impedance Per Side

(1x8 speaker, or 2x16 speakers per side)

COMBOS:

206 & 208 Mono Power Combos:

• With Internal Speakers "on" : 8 Minimum Total

External Impedance

• With Internal Speakers "off" : 4 Minimum Total

External Impedance

206 & 208 Stereo Power Combos:

• With Internal Speakers "on" : 16 Minimum

External Impedance Per Side

• With Internal Speakers "off" : 8 Minimum

External Impedance Per Side

112 Mono Power Combos :

• With Internal Speaker "on" : 8 Minimum Total

External Impedance

• With Internal Speaker "off" : 4 Minimum Total

External Impedance

112 Stereo Power Combos :

• With Internal speaker "on" : 8 Minimum

Impedance plugged into "Right" Side Jack Only!!!

Note : DO NOT plug external speaker into the

"Left" Side Jack on the 112 Stereo Power Combos

when the internal speaker is "on"!!!

• With Internal speaker "off" : 8 Minimum

External Impedance Per Side

IMPORTANT :

Warning : Under no conditions should the two

speaker outputs of a stereo power unit be connected

together in any way!!! This will damage the ampli-

fier and void your warranty, so please be careful in

setting up your speaker configurations!

Auto Amplifier Shutdown : To protect against

failure, the ML/S and ML/E heads and combos are

equipped with an Auto Shutdown feature that is

enabled when the Speaker Outputs are overloaded

or when the temperature of the unit exceeds safe

operation. The power dissipation in the outputs is

actually computed to determine if it is within safe

operating conditions and automatically shutdown

when limits are exceeded. When shutdown occurs,

the unit will appear to be on and all functions and

LED's will work; however, there will be no power

output to speakers. To reset the amplifier, turn the

power switch off, wait 3 seconds, remove or lower

the input signal, and turn the amplifier back on. If

you experience more shutdowns, even after correct-

ing the cause of the initial shutdown, check all

speakers and cables. If further action is necessary,

please call your local GK Service Center.

(continues on the next page)