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Knucklehead Reverb 1.0 p 9

Gain (with channel-select Push-Switch)

Although it's labeled "Gain," this control does a lot more than determine how loud

Channel 2 is. It regulates the Preamp's volume and works with the Master to set the

level and distortion amount. A simple rule of thumb is, the higher the Gain is set, the

more distortion you get. The push switch selects which channel is active. Its circuitry is

designed so that you don't hear a loud pop or click when the channel is changed.

Bass

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

speaker's characteristics and how much distortion you use. The bass EQ curve has

been specially tailored to complement the maximum bass response of the RIVERA

Knucklehead 412-Cab (T/B) speaker enclosures.

Middle (with scoop Pull-Switch)

The midrange circuit provides the "meat" that fills out your sound. Two notch

frequencies are available-550Hz (when pushed in), and 750 Hz (when pulled out).

Notch is the hinge point of the Bass and Treble controls. Think of it as a valley between

two mountains on a graph. Turning the knob alters the depth of that notch, letting you

dramatically change the overall voicing of your tone. Vintage Tweed and Plexi British is

typically at 550 Hz. Modern lead sounds are often EQ’d in the studio to 750 Hz dip.

Adjust to your taste.

Treble

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.

Master (with Push Boost switch)

Think of the Master as a sort of governor that sets the maximum loudness for the

channel. Also, think of it as the second half of what the Gain knob does. With the Gain

turned down and the Master up, there's less distortion than if you crank up the Gain and

set the Master lower. The Master control comes after all distortion and tone-shaping on

Channel 2, so its level doesn't have a bearing on your basic tone. When you push the

Boost switch on Channel 2, 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.

Channel 3

Channel 3 shares the EQ with Channel 2, but is a different texture of distortion and gain.

A extra section of a Preamp Tube is switched into the circuit for Channel 3. Identical in

controls, EQ, and features, it's difference lies in it's internal circuitry and distortion

textures. Different music can at time require a different fabric of harmonics and

textures. Many players have said that the tone is more greasy and more hard-core.

Like Channel 2, all of the descriptions of the features and the instructions for their usage

apply. Because of the extra tube stages involved in the circuits, the attack and

compression response also differs from Channel 2. Just try it and you will hear.

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