Mesa Throttle Box, Owner'S Manual

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BOOST
Another valuable feature is the global (works in both LO and HI Modes) BOOST switch that allows you to further shape the overall
EQ of the pedal to your needs. This switch adds a bit of gain, girth and fat low end and fills in all the “holes” and generally makes your sound
bigger. You may have to adjust the TONE control and/or the setting of the Graphic EQ to achieve your preferred and/or a balanced sound with
the BOOST activated.
Heavy, high gain sounds usually benefit from the BOOST position engaged. Low to medium gain sounds can work with both positions, but often
benefit from the more tapered and balanced low end of the non-BOOST or normal position.
HI/LO FOOTSWITCH
The HI/LO footswitch incorporated into the GAIN circuit creates two different gain regions (overdrive levels). This
footswitch toggles you between the HI and LO Gain Modes.
LO works great for Crunch or clipped chording and medium gain solo sounds. HI provides an increased level of saturation that is better suited
for heavy Rock and Metal rhythm styles and smoldering single note lead work. Try the LO Mode with the BOOST bypassed for the best balance
when searching for lower to mid gain sounds appropriate for Blues, R&B or any other time when subtle saturation is in order (see BOOST section
earlier in this manual). The balance between low end and top end will be more in-sync and even, making the sound sweeter and more dynamic.
The HI Mode kicks the gain up a few notches and delivers much more overdrive, sustain and harmonic layering. Try the BOOST engaged for
high gain applications where you need maximum saturation and thunderous, tuned low-end for Heavy styles.
BYPASS
This footswitch is pretty self-explanatory... it “hard” bypasses the THROTTLE BOX EQ™. It removes all circuitry from your signal
path and uses a piece of wire from the INPUT to the OUTPUT. It is the same as having a very short piece of wire in line with your guitar’s signal
cable. When in BYPASS Mode none of the controls on the THROTTLE BOX EQ™ have any effect on the signal and you can rest assured your
guitar ‘s sound is not being altered in any way by the THROTTLE BOX EQ™.
NOTE: Make sure to take into account that any length of cable more than a few inches may have some cable capacitance and roll off a bit of top
end. Use as short of cables as possible to avoid this annoyance.
EXTERNAL DC POWER JACK
This standard female DC Receptacle on the pedal is the External Power Supply Jack and it accepts the
male plug from a standard 9-Volt DC “wall-wart” power supply. When installing your unit into a pedal board utilizing a universal power supply
(multi-output pedal board power supplies), connect the external power source here. SEE WARNING BELOW!
NOTE: The External DC Power Supply is Not Included. WARNING!!! To avoid immediate damage to your unit and the voiding of your warranty,
the External Power Supply
MUST be 9VDC with a NEGATIVE CENTER plug polarity and a jack size of 2.1mm x 5.5mm. Do NOT connect a
9-Volt AC Voltage Power Supply to the EXT Power Jack!
The internal battery is (are) automatically disconnected by a switching element in the External DC Receptacle on the front of the pedal. However,
if you know you will not be using battery power for an extended period—for example, if you are mounting the unit to your pedal board permanently
- it is wise to remove the battery to avoid possible damage from long-term battery corrosion.