Slave Out; Speakers; Bias Select - Mesa/Boogie pmn Owner's Manual

REAR PANEL:
SINGLE RECTIFIER SERIES 2 SOLO HEAD
ALL TUBE AMPLIFIER HANDMADE IN PETALUMA, CALIF USA

SPEAKERS

SLAVE
4 OHM
OUT 4 OHM 8 OHM
(TO EXT. PWR AMP)
REAR VIEW - HEAD VERSION

SLAVE OUT:

This 1/4" jack provides a signal derived from the speaker jack. Perfect for using the RECT-O 50 as a master pre-
amp, or additional power amps may be connected for more power when needed. Some players use this to derive an FX Send Signal
SINGLE RECTIFIER SERIES 2
ALL TUBE AMPLIFIER HANDMADE IN PETA
SPE
SLAVE
4 O
4 OHM
OUT
(TO EXT. PWR AMP)
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 RECT-O 50 (combo only) is equipped with
SINGLE RECTIFIER SERIES 2 SOLO HEAD
ALL TUBE AMPLIFIER HANDMADE IN PETALUMA, CALIF USA
SPEAKERS
SLAVE
4 OHM 4 OHM
OUT
(TO EXT. PWR AMP)
HEAD VERSION

BIAS SELECT:

Your RECT-O 50 amplifier was designed with versatility in mind. So to add to the already awesome array of on
board features...we felt it essential that these new RECT-O 50 Series 2 amplifiers be able to adapt their power output section to
use the other classic pentode power tubes, the British style EL 34. These tubes are largely responsible for
the signature sound of many immediately identifiable and wonderful sounding amps created in Great Britain
and used on some of the best recordings to date.
BIAS SWITCH
The nature of their sound is usually brighter in the extremely high frequencies...some players find this almost
6L6 EL34
thin at first. However, aficionados of the EL34 sound know that nothing has the lushness of harmonics or
spread like a power amp using EL34's. In truth EL34's do focus in on a region of upper harmonics that 6L6's
CAUTION
SWITCH MUST MATCH
TUBES IN USE
reproduce, but not really enhance, in the same way the EL34's do.
This characteristic is sometimes preferred for sounds that range from a soft clip that would be used for
FX MIX
BIAS SWITCH
6L6 EL34
90 %
10%
CAUTION WARNING
electric shock, replace fuse with
SWITCH MUST MATCH
same type and rating only. Do not
TUBES IN USE expose this unit to rain or moisture.
and go to other amps for their wet sound.
NOTE: Once a signal is taken from the SLAVE, it can not be inserted back into the FX Loop Return
jack or a feedback loop will occur. Much like holding a microphone into the PA system's cabinets...a
loud high pitched squeal will occur.
a Celestion Custom 90 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.
8 OHM
FX LOOP
EXT. SWITCHING
RETURN
SEND SOLO
: :
To reduce risk of fire or CAUTION To reduce risk of fire or electric
shock, do not remove cover. No user-
serviceable parts inside. Refer
servicing to qualified personnel.
SLAVE SLAVE, it can not be inserted back into the FX Loop Return
PAGE 9
PATENTED 4,211,000 & OTHERS PENDING FOR SOLO, MUTE & LOOP CONFIGURATION
CHANNEL 1
FOOT
CHANNEL
CHANNEL 2
SWITCH
FUSE
SET TO CHANNEL 1
TO USE FOOTSWITCH
POWER FUSE POWER FUSE
WARNING:
Unplug power
120 V~ 2.5 A
before replacing
50-60 Hz SLO fuse or removing
bolts mounting
2.5 A BLO
chassis.