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Attenuator toggle and Attenuator – When the toggle points up to the left the Attenuator is
out of the signal path and the amp delivers its full 16 watts to the speaker. When the toggle
is down the Attenuator is active and you can continuously vary from 4 down to ~ 0 watts.
Line Out – ¼ inch mono guitar cable output which is always active. We have tailored the
sound to simulate a speaker roll-off and response. You can run this into an A/D converter
then into your computer to record or run it into a mixer/PA for live sound in addition to the
amps speaker. If you want to record silently – turn on the attenuator and set it to minimum.
Standby – Off – Play – The toggle switch baton in the middle position is Power Off. To
play set the amp to Standby (switch baton
down). After 1 minute of warm up, switch the
Power baton
up to Play. The amp is ready to be played. Using the Standby setting every time
the amp is turned on will prolong tube life.
Bottom Panel
Fuse – In the unlikely event that a tube fails, the Mercury V is protected by a 1.5 Amp slow
blow fuse for 120v and 100v (North America and Japan) models or a 0.75 Amp slow blow
fuse for 220v and 240v (Europe and Asia) models. Please consult us or a qualified tech for
assistance in the event of a fuse blowing. The fuse is located on the bottom of the chassis by
the power cord.
Speaker output jack – The speaker output jack is located between the third and fourth pre
amp tubes on the chassis (see
Chassis Diagram). The Mercury V is designed to drive an 8
ohm load. Maximum tone will be realized when connected to a 8 ohm speaker or cabinet.
The speakers in Mercury V combos and extension cabinets are configured to provide the
amplifier with an 8 ohm load.
To run an external cabinet, turn the Mercury V OFF, unplug the internal speaker (combo
amps) and plug in the external cabinet’s speaker cord. Alternatively, a “Y” speaker cord can
be used to run a 16 ohm external cabinet along with the internal speaker(s) of a combo amp
without damage to the amp (the total impedance or speaker load in this case will be 5.3
ohms – see the previous paragraph).
Damage will result from operating the Mercury V without a speaker load or into a 4 ohm
load. The Attenuator is designed to operate with an 8 ohm load only.
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