Fuse; Rectifier_Select - Mesa/Boogie Lonestar Owner's Manual

REAR_PANEL:
WARNING:
Unplug power
before replacing
fuse or removing
bolts mounting

FUSE

SILICON FAN
chassis
First set sound with
DIODES ON
LOOP bypassed. Then
FUSE
set SEND & OUTPUT
to 50% for unity gain.
With LOOP IN, adjust
SEND to match FX.
POWER FUSE TUBE FAN
Use OUTPUT for
RECTIFIER OFF
RETURN level and
120 V~ 4 A
TRACKING
live volume control.
60 Hz SLO
4 A BLO
FUSE:
This is the A.C.'s (Alternating Current) main fuse and provides protection from outside A .C. fluctuations as well as power
tube failure damage. Should the FUSE blow, replace it with the same rating in a Slo-Blo type package. The domestic U.S. version
requires a 4 amp Slo-Blo_FUSE. A power tube short or failure is often the cause of a blown FUSE...Follow the
WARNING:
cold start procedure mentioned in the ON/STANDBY switch section and watch the power tubes as you flip
Unplug_power
before_replacing
fuse_or_removing
the STANDBY to the ON position. If a power tube is going bad or is arcing you will see it! Flip the STANDBY
bolts_mounting_
DIODES
chassis
FUSE
switch to Standby immediately and replace the faulty power tube and the_FUSE if necessary.
FUSE
POWER___FUSE
120_V~ 4_A TUBE
If you see nothing abnormal as you switch the STANDBY on, it is possible that a power tube shorted temporarily
RECTIFIER
60_Hz SLO
TRACKING
4_A BLO
and blew the FUSE. If this is the case it may work again normally. To be safe, you might want to replace just
the adjacent tube or all power tubes in the "shotgun" troubleshooting tradition and save the replaced set as spares. Spare fuses are a
must for the fabled cord bag along with your spare tubes. Always carry both for they could be worth their weight in gold someday.
RECTIFIER_SELECT:_Diodes_/_Tube_Rectifier_Tracking
to convert the voltage from AC to DC for the power supply. The LONE_STAR_incorporates a further improved version of our patented
Switchable Rectifier feature first seen on the Dual and Triple Rectifier SOLO heads. It incorporates a Rectifier Tracking™ feature
that insures proper voltage is present at all times and improves reliability. This switch operates in tandem with
WARNING:
the individual Channel Power Select (50/100) switch located on the right side of the Front Panel.
Unplug_power
before_replacing
fuse_or_removing
bolts_mounting_
chassis
DIODES
FUSE
The Rectifier Tracking feature monitors the Channels, determines their power status and automatically selects
FUSE
the proper rectifier type - which ultimately assures the best sound. This provides optimization of the power
POWER___FUSE
120_V~ 4_A TUBE
settings, delivering a magical tube-rectified power-sag vibe for the channel set to 50 watts - and a tighter,
RECTIFIER
60_Hz SLO
TRACKING
4_A BLO
bolder 100 watts of diode-rectified authority for the channel set to full power.
Selecting DIODES chooses the solid state diode rectifiers which deliver maximum power and headroom, while tracking tighter and
imparting a quicker transient response and bolder attack. When set to DIODES, both Channels will respond with this character
regardless of their individual power settings on the Front Panel. Selecting TUBE_RECTIFIER_TRACKING engages the 5U4 rectifier
tube automatically (either or both channels) whenever the 50 watt selection is made on the Front Panel Channel Power Select switch.
When switching to the opposite channel, if the Channel Power Select is set to 100 watts, the Diodes are automatically engaged to
insure proper matching to the added load on the supply.
This innovative feature allows you to tune each channel for the ultimate power expression and feel. With this flexibility you can switch
between a high power, spanking clean rhythm sound in Channel 1- and a saggy brown, old school power clip for bluesy single note
solo work with the DRIVE bypassed in Channel 2. Or conversely, set Channel 1 for a sweet low power clean sound and crank up the
horsepower with the DRIVE active to articulate a high gain solo voice in Channel 2. Regardless of the way you choose to dedicate
your Channels, you will find this power section flexibility a remarkable step forward toward your ultimate tone.
NOTE: Don't forget the Front Panel AC switch incorporates the reduced voltage TWEED setting. This adds yet another dimension to
the power expression scenario and can produce amazing results when combined with the TUBE_RECTIFIER_ T RACKING feature. Be
sure to experiment with these two features in combination with each other.
LONE STAR
SEND RETURN
NORMAL
MIN
HARD BYPASS
SEND LEVEL
TUBE LOCATIONS
1 x 5U4 4 x 6L6
B
M
ALL - TUBE
ESA OOGIE
AMPLIFIER
CH 2 REVERB CH 1
REVERB
LOOP
BRIGHT
IN
REV WARM
This two position toggle selects the type of rectifier, Silicon Diodes or Tube,
PAGE_12
CHANNEL SOLO BIAS SELECT
EL-34 EL-34
EXT
SW
WHEN
6L6
RED ON
CAUTION: SWITCH MUST
MATCH TUBES IN USE
SPEAKERS
SLAVE
8 OHM 4 OHM 4 OHM
HAND BUILT IN PETALUMA CA.