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LEVEL MIDLOW HIGHGAIN VOLUME
CD/TAPE
INPUT
GUITAR
INPUT
HEADPHONE
POWER
LEAD RHYTHM
EQUALIZER
EFFECTS
REVERB
CHORUS
Dual 30RC
PREAMP
CHANNEL
SELECT
EFFECTS
USA
UK
ON
OFF
LEAD
RHYTHM
1 2
3
5
6
7
8 9
10
12
13
4 11 14
15 16
1.) CD/Tape Input - this 1/4" 3 conductor jack will allow you to plug in a CD player, tape or any other source
to practice along with. It sums the left and right signals into a mono signal. To control the volume of the
source, adjust the output volume of the device. We suggest you turn the volume all the way down then
plug in and adjust the volume according to your taste.
2.) Guitar Input Jack - this is a 1/4" 2 conductor input jack for plugging in your instrument. It is intended for
guitars but will accept other instruments as well.
3.) Lead Gain - adjust this clockwise to increase the amount of distortion you add to the overdrive signal.
Used in the lower ranges of the control, you get a less distorted sound, a "bluesy" tone. As you increase
the gain, you add tremendous amounts of distortion to the signal for a harder edged "crunch" tone.
4.) Channel Switch - this switch selects which preamp you are using. It will switch between the Rhythm and
Lead channels.
5.) Lead Volume - this control is the output volume control for the Lead Channel. It follows the same tone
circuit as the other channel. It's gain structure is determined by the lead gain control but this serves as the
overall master volume for this channel.
6.) Rhythm Level - this is the volume control for the clean channel. It's gain structure is preset for maximum
signal before distortion and determines the output level of the amp.
7.) Bass - this control is the bass control. It is passive and set to shelve frequencies at 65 Hz. This will effect
the low frequency signals. Turning it fully clockwise, the signal is left alone. Turning it counterclockwise,
the lows will be rolled off.
8.) Preamp Switch - this switch selects which preamp style you are using. It will switch between the classic
USA warm sound or Brighter sound famous in the UK.
9.) Mid - this control is the midrange control. It is passive and set to shelve frequencies at 1KHz. This will
effect the middle frequency signals. Turning it counterclockwise, your signal will "hollow out" the mids
which is popular in today's music.
10.) High - this control is the high control. It is passive and set to shelve frequencies at 5KHz. This will effect
the high frequency signals. Turning it fully clockwise, the signal is left alone. Turning it counterclockwise,
the highs will be rolled off.
11.) Reverb Level - this control adds the spring reverb and mixes it into the main signal buss. Reverberation
creates a trail like effect with the sound. It lets the notes "hang in the air" longer, extending the sound.
12.) Chorus On/Off Switch - this is the switch to turn on and off the chorus circuit.
13.) Chorus Level - this is the Speed Control for the chorus circuit.
14.) Headphone Jack - this is a 1/4" 3 conductor jack for plugging headphones. It will sum the signal and put
the sound in both ears, thereby creating a pseudo-stereo sound. Volume will be determined by the volume
control on the channel you are on. It will disconnect the internal speaker when plugged in. This will allow
quiet practicing.
15.) Jewel Light - this jewel light lets you know that the amplifier is on.
16.) Power - this switch turns on and off the AC power to the amp.
Back Panel - (not pictured)
Speaker Out - this is a 2 conductor 1/4" speaker output jack. This will disconnect the internal speaker and
allow an external speaker cabinet to be employed. Rating is 8 ohms.
Line Output - this is a 2 conductor 1/4" line output jack. This will allow an external amplifier or mixing
board to be supplied with the signal from this amp. This signal is attenuated and comes from the power
amp.
Effects Loop I/O - these are 2-2 conductor 1/4" jacks. This will allow an external effects device or
equalizer to be patched back in before the power amp section in this amp. One is send and the other is
return.
Footswitch Jack - this is a 3 conductor 1/4" jack. This is for hooking up a footswitch to switch channels
and to turn on/off the chorus.