Mesa/Boogie Dual Rectifier Road King Amp Owner's Manual page 27

REAR PANEL CONTROLS & FEATURES
LOOP 2 MIX:
This rotary control determines the dry/wet ratio of the Parallel Effects Loop in each of the 4 Channels. Remember that the SERIES
(LOOP 1) Loop dry/wet ratio must be controlled at the processor that is inserted into its SEND & RETURN jacks. LOOP 1 has a
predetermined level of RETURN signal strength at the Return stage of the amplifier, which is critical to overall
NORMAL
2x6L6 performance. Only LOOP 2, because of its Parallel signal path, can be adjusted as to how much of its signal will
2xEL34 4x
2x
EL34 6L6
2x 2xEL+
be fed back in with the main signal. Keep this fact in mind when dedicating the processors you wish to use to
6L6 4x6L6
PROGRESSIVE
10% 90%
LINKAGE one or the other of the LOOPS.
LOOP 2
MIX
CH 4
A
ON ON
A
+
NOTE: Remember that the EFFECTS LOOP must be engaged in the EFFECTS LOOP section of the Rear
B
B
OFF OFF
SPKR LOOP 1 LOOP 2
Panel and something connected to the LOOP 2 insert jacks for this control to have any effect on the signal.
That wasn't so bad...was it. Now you are a Master Of Channels and can confidently begin to dial and dedicate each of the four
Channels to a specific sound and application. Before we continue, take a while to enjoy these different Channels and we will pick it up
when you finish to go over the EFFECTS LOOP and the rest of the features on the Rear Panel.
EXTERNAL TRIGGERS:
These two jacks provide trigger ports for the remote control of external effects devices, drum machines, samplers or anything that will
accept either momentary or tip-to-ground logic as a control language. By connecting a cable from the unit you wish to control to these
HANDBUILT
2x6L6
offer or electric L
IN PETALUMA
No user-
2xEL34
Refer 2x
CALIFORNIA, USA A
sonnel
EL34
T
2x
C
6L6
H
NORMAL
I
PROGRESSIVE
N
LINKAGE
G
CH 4
90%
10%
A
FTSW MIX DIODE
P
U
L
S
E
B
TUBE-TRACKING
RETURN 2 SPKR
RECTO
EXT. TRIGGERS
ceives another keystroke, at which time the tip is unlatched from ground.
NOTE: Unshielded (speaker cable will work) cable is recommended for the control lines used in the EXTERNAL TRIGGER applica-
tions. If you have only shielded cable, this will suffice until such time that you can obtain unshielded cable.
EFFECT LOOPS:
As we mentioned earlier, there is a SERIES LOOP (1) and a PARALLEL LOOP (2) for your processing needs. The entire LOOP
section of the amplifier may be hard Bypassed to omit all associated loop circuitry from the signal path. When BYPASS is selected,
WARNING :
To reduce risk of fire or electric
shock, Do not remove cover. No user-
serviceable parts inside. Refer
servicing to qualified personnel.
NORMAL
SEND 1
LOOP SYSTEM
ACTIVE
10%
BYPASS
SEND LEVEL FTSW
LOOPS, SOLO
& MASTER
CONTROLS
RETURN 1 SEND 2 RETURN 2
excessive gain at the processors Input and Output stage, thus reducing the internal separation between these stages we have built
into the Road Kings' EFFECTS LOOP. Why can't there be more separation at this point in the circuit? There could be if we -and you
- didn't care about TONE. This is an extremely sensitive part of any amplifier, and we have always chosen these most critical part
values on the side of TONE, knowing that if the loops are used properly - with high quality processors there will be no problems.
jacks you may control the status of the device(s) by hitting the EXT TRIG button located in the center
of the Footcontroller. As mentioned, there are two types of logic and each has a separate jack so that
one button can control two devices.
PULSE triggers a "one-shot" momentary type pulse that will control virtually anything requiring mo-
mentary pulse logic.
LATCHING connects the tip-to-ground and latches them in this state until the EXT TRIG button re-
both LOOPS along with their controls, the Front Panel OUTPUT and SOLO controls and two
12AX7's are taken out of the circuit. This leaves the individual Channel MASTER controls as
the main volume controls. Front Panel LED indicators for each Loop located between the pairs
NORMAL
of Channels to keep you abreast of LOOP 1 & 2 status.
90%
NOTE: It is important to understand that the two EFFECTS LOOPS were designed to
MIX
work best with a unity gain signal. By increasing the gain on your processors Input or
Output beyond this point, you run the risk of experiencing a high pitched squeal or feed-
back. This is a result of the SEND and RETURN jack being connected together by adding
(Continued)
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