Carr Hammerhead MK II Manual de usuario descargar pdf (Pagina 2)

INPUT DRIVE – Also known as Drive, Volume, Gain, etc. It is the knob closest

to the input jack. In many cases it has a bright cap so the frequency response

will be dependent on the knob position. As the gain increases the tone shifts

from a treble and upper mid emphasis to a bass and lower mid emphasis. On

jumpered amps, this setting’s label changes to TREBLE DRIVE.

OVERDRIVE – A second drive control for some amp models. It does not have a

bright cap so it only aects the gain. Set Overdrive to 8.00 to get the identical

response to pre-v10.10 rmware for models that have Overdrive. On jumpered

amps, this setting’s label changes to NORMAL DRIVE.

INPUT TRIM – A clean, linear gain applied at the input to the amp block that

adjusts the relative gain of the preamp. (This is analogous to changing the type

of tube for V1 in an actual amp.) It does the same thing as the BOOST switch,

the dierence being that you can control how much is boosted or cut (+/-20

dB). As a rule of thumb, every 2x multiplier equals +6dB boost. In other words,

Input Trim at 4.0 produces a +12dB boost. Input Trim should be set to 1.00 if

you want to match the actual amp.

BOOST – Toggles the input boost for an additional 12 dB of input gain. Enabling

Boost sometimes works better than turning up preamp gain.

CUT – Reduces the amount of low frequencies into the amp. This can be used

to achieve a tighter tone or to reduce low-end “ub”. This is similar to increasing

LOW CUT (Tone page) while still retaining some low end so it doesn’t get thin.

Provides an easy way to cut the overpowering bass in models such as Recto,

Splawn Nitro, Komet and others.

FAT – Emphasizes midrange “body” by shifting down the tone stack center

frequency. Specically, it multiplies the tone stack treble capacitor by four.

Depending upon the type of tone stack, tone control settings, position, etc., the

eect can be more or less noticeable. (See TONE page.)

BRIGHT SWITCH – A “treble peaker” which functions mainly to compensate for

the loss of highs at low amp volume. The eect may be subtle or pronounced,

depending on the amp selected, and it is also aected by the BRIGHT CAP.

SATURATION – In a real amp, the circuit is located between the preamp and

power amp. It switches in a zener diode clipping stage between the preamp

and the tone stack (the “Arrendondo Mod”) for more aggressive distortion char-

acter which also adds compression and cuts volume. You may have to adjust

the MASTER VOLUME or LEVEL to compensate.

DYNAMIC PRESENCE – Models the output transformer leakage inductance that

results in a brightening of the tone when the power amp is pushed. Increasing

this value results in a brighter response as the virtual power amp is pushed.

When playing softly or at lower gains, the inuence of this control is lessened.

Note that this only aects the power amp modeling and is dependent on

the degree of power amp overdrive. This control can also be set negative to

cause the tone to darken when playing hard. This control can also be used to

help “dial in” the sweet spot of an amp model. As the MV is increased an amp

becomes more liquid, compressed and easier to play. However, the highs may

get overly compressed causing the amp to sound too dark. The Dynamic Pres-

ence control allows you to get the desired power amp drive and liquid feeling

and then bring the highs back without aecting the rest of the spectrum.

DYNAMIC DEPTH – Analogous to the Dynamic Presence control, this increases

or decreases low frequencies when the virtual amp is being pushed. While real

amps don’t display this behavior, it is a valuable tone-shaping tool.

MASTER VOL TRIM – Can be used to increase (or decrease) the Master Volume

for non-MV amps. If MV is 10 and you set MV Trim to 2.0 then the MV will be 20.

Amp Block

You can also adjust preamp gain globally with GLOBAL AMP GAIN, which

aects every amp and preset. One reason you might do this is to compensate

for the gain dierence when switching to a hotter/ quieter guitar.

On the Axe-Fx unit: GLOBAL button > CONFIG > AMP GAIN

MASTER VOLUME defaults to 10 for non-master volume (vintage) amps. If

you want more MV on non-MV amps, increase MASTER VOL TRIM.

Most MV amps achieve full volume between 2-4. Further increase com-

presses the bass and treble, thereby adding mids. (Bass and treble are

boosted by the speaker impedance curve, so they clip earlier.) The sweet

spot is that point at which the power amp starts to compress. If you want a

more “open” sound, be careful not to set the MV too high. You can also lower

XFORMER MATCH (a little goes a long way.)

Modern high-gain amps can easily push the power amp into clipping at

relatively low MV settings. With a real amp, it gets incredibly loud at those

settings so you instinctively reduce the MV. In our virtual world we are

unaware of how hard the virtual power amp is being pushed. Don’t be sur-

prised if a high-gain amp sounds best with the MV around 2. (Increase LEVEL

to compensate for low MV.)

PRESENCE and DEPTH dier from BASS, TREBLE, and BRIGHT (Tone page)

in that they are applied to the power amp as opposed to the preamp. Their

eect is dependent on the amount of NEGATIVE FEEDBACK.

SATURATION changes the distortion character. To preserve the distortion

character and tone use BOOST or INPUT TRIM instead.

For most tone stacks, when you set the BASS and TREB to zero, the tone stack

becomes basically “at” and the MID becomes a volume control.

INPUT DRIVE and OVERDRIVE will have a dramatic eect on the response of

the amplier and the personality of your instrument.

TOP ROW BOTTOM ROW

PRESENCE – Decreases high frequency negative feedback in the power amp.

Increased Increase it to help sound cut through a heavy mix. Decrease it to

compensate for overly-bright amps. It is tightly coupled to speaker impedance

(HI FREQ, HI RESONANCE.)

HI CUT – On amps with no negative feedback (NEG FDBK=0), Presence is

replaced with Hi Cut, a simple high-shelf EQ at the power amp output.

DEPTH – Boosts low frequencies from the power amp by varying the negative

feedback frequency response. On amps with a xed depth circuit, Depth will

have a preset value. Also called “Resonance” or “Girth” on some amps.

MASTER VOLUME – Determines the amount of power amp distortion. As it

increases, the tone controls have less inuence on the sound. Amp models

default to a starting Master Volume setting when selected. (Non-MV amps

default to 10.)

BASS/MID/TREB – “Passive” tone stack. Can be changed with TONESTACK TYPE.

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Carr Hammerhead MK II Manual de usuario Pagina 2

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