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Rivera KNUCKLE HEAD 2 Guide de dépannage Page 8

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Tr eble (with Pull Bright switch) This treble control is similar in operation to the one on the
Leac/Crunch channel. In addition, it has a built-in Pull Bright switch. When pulled out, it adds bright
highlights to the tone.
Gain 2 The Gain 2 knob regulates the preamp’s volume and works with Master 2 to set the level and dis-
tortion amount. A simple rule of thumb is, the higher Gain 2 is set, the more distortion you get.
Lead/Crunch channel Both channels are voiced differ-
ently, and the Lead/Crunch channel is definitely geared
toward creating impressive overdrive (think of a “distor-
tion” tone). Grit, grunge, dirt—whatever you’re looking for
in the distortion department is here, from sweet and
singing to hard-driving to maximum sustain.
Note: Like the controls on all classic amps, the Bass, Middle, and Treble interact, creating smooth,
musical tone changes. All three controls operate with even response throughout their ranges.
Master 1 (with Pull Boost switch) Think of Master 1 as a sort of governor that sets the maxi-
mum loudness for the channel. Also, think of it as the second half of what Gain 1 does. With Gain 1
turned down and Master 1 up, there’s less distortion than if you crank up Gain 1 and set Master 1 lower.
The Master 1 control comes after all distortion and tone-shaping on the Lead/Crunch channel, so its level
doesn’t have a bearing on your basic tone. When you pull out the Boost switch on the Lead/Crunch chan-
nel, it adds a whole range of harmonics, and not just gain. This is easy to hear by playing a power chord
and comparing its sound with the switch pushed in and pulled out. With the switch activated, the tone
blooms, going from fat to ferocious
.
Tr eble (with Pull Sweet) Whether you’re looking for edge, slash, or just a little shimmer, this knob’s
for you. Like the Bass control, the apparent effect of the Treble changes with the loudness and distortion
you dial in. The Pull Sweet switch increases the high-end brightness post-distortion, adding an addition-
al distortion edge
.
Middle (with Pull Scoop) The midrange circuit provides the “meat” that fills out your sound. It
has a slight notch in the frequency spectrum at about 500 Hz when the control is pushed in, and 750 Hz
when the control is pulled out. Turning the knob alters the depth of that notch, letting you dramatically
change the overall voicing of your tone.
Bass (with Pull Bottom) The “chunk” and support that form the backbone of your tone come from
this control. Its effect on your overall sound will be different at high and low volumes due to the speak-
er’s characteristics and how much distortion you use. Pull Bottom extends the bass and bottom-end range.
This is essential for adding the huge wall of bottom end that modern players need, especially with 7-
String instruments. The bass EQ curve has been specially tailored to complement the maximum bass
response of the RIVERA K-Cab speaker enclosure.
Gain 1 (with Pull Channel Select switch) Although it’s labeled “Gain,” this control does a lot
more than determine how loud the Lead/Crunch channel is. It regulates the preamp’s volume and works
with Master 1 to set the level and distortion amount. A simple rule of thumb is, the higher Gain 1 is set,
the more distortion you get. The pull switch selects which channel is active. Its circuitry is designed so
that you don’t hear a pop or click when the channel is changed. (The FS-7 footswitch also selects chan-
Knuckle
Head
II
®
PRESENCE
POWER STANDBY
FOCUS MASTER 2 BASS MIDDLE TREBLE GAIN 2 MASTER 1 TREBLE MIDDLE BASS GAIN 1
BOOST SWEET SCOOP BOOST SELECTNINJA NOTCH BRIGHT
INPUTS
LOW
GAIN
HIGH
GAIN
HANDCRAFTED BY
RIVERA RESEARCH & DEVELOPMENT SYLMAR, CA USA
PULLPULLPULLPULL
CLEAN/RHYTHM LEAD/CRUNCH
PULL PULL PULL PULL
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MASTER 1 TREBLE MIDDLE BASS GAIN 1
BOOST SWEET SCOOP BOOST SELECT
PULL
LEAD/CRUNCH
PULL PULL PULL PULL
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