Fx Mix Control; Speaker Mute Switch; Speakers - Mesa/Boogie F-100 Owner's Manual

REAR PANEL:
FX MIX:
This control determines the dry/wet blend of the FX Loop signal in relation to the unaffected signal. Set to 10%
you will experience only the dry signal (no noticeable FX) and at a setting of 90% the entire signal will be wet (total
10% 1 0 0%
effect.)
FX MIX
RETURN
For the best results...Set the mix of your effect to 100% wet. Then dial in the amount of effect that you wish to hear,
starting at 10% with the FX LOOP MIX control. The drier (closer to 10%) signal you use, the better your tone
should be. This parallel type FX Loop allows the amplifier to retain its purity with the smallest amount of degredation
due to possible effect impedance mismatching.
%
10 0
MIX
TURN
MUTE SPKR ON
SILENT RECORDING

SPEAKERS

4 OHM
8 OHM 4 OHM
4x12 cabinets may be 4, 8 or 16 Ohms. If you are not sure of the impedance of your cabinet, you may need to remove the Rear Panel
in order to verify the impedance rating of the individual speaker or speakers. Mesa/Boogie 4x12 and 4x10 cabinets come
standard wired to 8 Ohms, and are wired in series-parallel.
Some Non-Mesa 4x12 cabinets are wired 16 Ohms using four 16 Ohm speakers. By wiring all four speakers in parallel, you can
reduce the cabinet to an impedance load of 4 Ohms (assuming the speakers are 16 Ohms each.) No matter how unusual your
speaker setup, it is always possible to get good performance.
SILENT RECORDING:
This rocker switch which is located down under the chassis and selects between the live "Speaker
On" setting and the silent "Speaker Mute" setting. This is a perfect solution for all-nighters! This
switch mutes all of the signal at the power section driver stage, removing the need for a speaker load
IN THIS POSITION ONLY!
NOTE: When this switch is set to the "ON" position, a speaker load must be maintained by either a
load resistor of some type or a speaker itself. Failure to follow this instruction could result in major
damage to the amplifier. Leave your speaker connected.
SPEAKERS:
Sensitivity to speaker mismatching in regards to ohmage differences is low, hence no damage to
the amplifier will occur. However, very low ohmage loads will cause the power tubes to wear faster.
The F-Series are equipped with a single 12 inch 8 Ohm speaker, but as you can see, other speaker
configurations may be used. When using two 8 Ohm speakers, connect each of them to the 4 Ohm
speaker jacks that are provided, this will equal a 4 Ohm load which is the proper impedance
required when using this particular speaker configuration.
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