Mesa/Boogie OOGIEBMESA Owner's Manual download pdf (Page 19)

PAG E 1 5

LIVE OUT: To Power Amp The

Recto Pre

provides two output channels for feeding signal to either stereo power amplifiers, effects

processors (see EFFECTS LOOP - presented earlier in the Rear Panel section of this manual) or even the effects return or power-in

stages of self contained amplifiers. Thus the

Recto Pre

is a stereo

capable pre-amp with two identical signals that appear at the MAIN

OUTPUTS. For mono applications simply connect either of the MAIN

OUTPUT jacks to your power amp or processor. To use both MAIN

and RECORD OUTPUTS in a mono scheme simultaneously, con-

nect opposing outputs (one channels’ MAIN OUTPUT to your power

amp - the other channels’ RECORD to your console.

The MAIN OUTPUTS are fed signal from both individual channel MASTERS as well as the final OUTPUT Level Control located at the far

right on the Front Panel. As mentioned earlier, the channels are controlled simultaneously with the single OUTPUT control, as this poten-

tiometer is actually two syncronous pots in one. To control the output channels separately, they must be sent to two different power

sources and then controlled independently from there. In this type of set-up it may be necessary to lift the ground on one of the power

sources to prevent a ground loop. This application is most often seen when a pre-amp is used to feed two or more power amps on a large

stage where there is need for both back line and stagefront monitor cabinets.

TUBE BAY: The

Recto Pre

uses six 12AX7A type dual triode pre-amp tubes for its’ all-tube circuitry which are mounted horizontally and

recessed in an easily accessible tube bay. In the unlikely event that you need to replace a tube, you may do so by simply unplugging it from

its socket and plugging a new one in. Since the tube sock-

ets grab the pins on the tube rather firmly, it helps to gently

rock the tube back and forth while pulling outward on the

tube (see illustration below).

When installing the replacement, make sure that the pins

on the tube are not bent (you can straighten bent pins with a

pair of needle nose pliers) and line them up carefully before

inserting the tube.

REAR PANEL CONTROLS: (Continued)

RECORD

OUT

TO MIX

CONSOLE

LEFT

RIGHT

LIVE

OUT

PWR

AMP

(ALT FX PATCH)

RETURN - L

RETURN - R

EXTERNAL SWITCHES

SEND

CH1 - CH2

SOLO

MODERN

EXT. TRIGGER

TO POWER AMP

10%

100%

FX MIX

NORMAL

HANDBUILT IN PETALUMA CALIFORNIA PATENTS PENDING FOR MUTE, RECORDING & SOLO FEATURES TUBES: SIX 12AX7

RECTO~PREAMP

ALL TUBE

RECORDING AMPLIFIER

117 V~

1 AMP

60 HZ.

POWER

LIFT

GROUND

MIN.

INPUT

MESA

12AX7

ESA

MESA

12AX7

MESA

12AX7

GENTLY ROCK TUBE BACK AND FORTH WHILE PULLING IN AN OUTWARD DIRECTION CAREFULLY

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 37 38

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Mesa/Boogie OOGIEBMESA Owner's Manual Page 19

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