Mesa/Boogie SOLO 50 - Manual (Page 10)

OUTPUT:
SOLO:
This control determines the overall output volume level of the amplifier. After the GAIN controls have been set for the desired sound
style and the two channels levels have been balanced with the channel MASTER controls, the OUTPUT control allows you to change
the playing level by adjusting a single control. The OUTPUT control is also wired as the Effects Loop Return
Level control. Should you ever use your RECT-O 50 as a power amp alone by inserting a signal into the
RETURN jack, the OUTPUT control will serve as the master level control.
NOTE: When using the EFFECTS RETURN as an input - to use the RECT-O 50 as a power amp - the
SOLO control can be used to attain a footswitchable boost if the Footswitch is connected. It is wired in
parallel to the OUTPUT control and therefore also controls the volume of the power section.
NOTE: The Effects Loop RETURN jack can serve as a power amp input so that you may use your SINGLE
RECTIFIER as a power amplifier for either stereo reproduction or to incorporate additional pre-amps.
While the possibilities for this type of application are virtually limitless, there are a few things to remember
that will help you when interfacing to the RECT-O for use as a power amp only;
1.) Connect “Dummy” plug or loose cable to SEND jack. ( This prevents any possible loading that could result in diminished RETURN
sensitivity.)
2.) The OUTPUT Level will be the only active control on the Front Panel (the PRESENCE control of the top / Rhythm channel will be
active only when that channel is engaged - see #3 )
3.) The SOLO control may be used to footswitch to a pre-determined amount of boost when the footswitch is connected.
4.) The lower LEAD channels’ MODERN mode - as part of its voicing - utilizes substantially less negative feedback in the power stage
creating a scenario of greatly increased power sensitivity. This internal revoicing produces amazing results in the lead sounds and
requires a sophisticated network of elements to switch to prevent the increased power sensitivity from blowing you out of the room as
the LEAD channel is toggled between VINTAGE and MODERN.
Therefor, we recommend selecting the top / RHYTHM channel when you wish to use the RECT-O as a power amp. The more
conventional power sensitivity of this channel will be the most compatible with external sources. Another benefit to using the RHYTHM
channel in a power-only application is that the PRESENCE control will be active and allow you to tailor the power voicing to your
specific tastes. If you do need the extra sensitivity the MODERN mode produces for a source that is unusually weak, it is there if you
need it. Simply select the LEAD channels MODERN mode. The PRESENCE control will not have any effect on the sound as it
switches with the mode change to an earlier stage in the pre-amp.
5.) The EFFECTS MIX control must be set to 100%.
This control can only be activated if the correct Footswitch is connected to the Footswitch DIN jack. SOLO is an additional fin al
output level control wired in parallel with the OUTPUT control. It is capable of a setting above that of the
OUTPUT control and can not be set below. The amount of apparent boost also depends on that of the
OUTPUT control - in that if the amplifier is at either the extreme low or extreme high levels of the OUTPUT,
its effectiveness is minimized. It has been optimized for live performance volume levels.
If the power section is either not a part of the sound (super quiet), or producing all its rated wattage ( super
loud), there is very little signal for the SOLO control to work with. By using the Footswitch and selecting
CONTROLS:
(Continued)
PAGE 6
SOLO OUTPUT
HEAD VERSION
SOLO OUTPUT
HEAD VERSION