R&R Ampflication SL User manual

P R E - A M P L I F I E R
MANUAL

TABLE OF CONTENTS
R&R SOUND AMPLIFICATION SL/LD MultiGain PRE-AMPLIFIER
MANUAL 1-1
R&R SL/LD MultiGain PRE-AMPLIFIER. OVERVIEW
PRECAUTIONARY MEASURES
FRONT PANEL CONTROLS
џturn on / turn off
џchannel CLEAN CH-1
џchannels LEAD CH-2 и CH-3
BACK PANEL CONTROLS
џnetwork connection, input / outputs
џFX LOOP
џmodes BRIGHT / NORMAL second channel
џmodes A250K / A1M third channel
џexternal preamp control
џtype, location and purpose of lamps
WIRING SCHEMES
PREAMPLIFIER ELECTRICAL BLOCK SCHEMES
SPECIFICATIONS
EXAMPLES OF FACTORY PRESETS
џchannel setting CH-1 CLEAN
џchannel setting CH-2 LEAD-1
џchannel setting CH-3 LEAD-2
1-2
1-4
2-1
2-1
2-1
2-2
3-1
3-1
3-1
3-2
3-2
3-2
3-2
4-1
4-2
4-3
5-1
5-1
5-2
5-3

O F F
A250K
A1M
CH-3
R&R SL/LD MultiGain PRE-AMPLIFIER. OVERVIEW
1-2 R&R SOUND AMPLIFICATION SL/LD MultiGain PRE-AMPLIFIER
MANUAL
The SL/LD MultiGain model 3-channel guitar preamp is designed with five 12AX7 tubes. It has a rack design (1 unit high) and
is convenient for use both in the studio and in concert activities, easy to use. It has a wide range of sound adjustment that
allows everyone to find their own unique sound.
џall-tube sound path (5 tubes 12AX7) with the ability to use tubes from different manufacturers separately for clean and
overdrive sound;
џ3 completely independent channels: CH-1 CLEAN (clean channel), CH-2 LEAD 1 (overdrive channel) and CH-3 LEAD 2
(drive channel). Channel switching is carried out both on the front panel and from the 2-button foot controller that comes
with the preamplifier;
џFX LOOP tube effects loop with a choice of operating modes (serial or parallel), switching on / off separately for clean /
drive channels, control from a two-button foot controller, softening the sound of transistor and digital processing due to
the use of a 12AX7 lamp in the circuit;
џA250K / A1M mode GAIN control for channel CH-3 (LEAD-2). The A250K has a more punchy sound with more pronounced
low frequencies. A1M has balanced high and low frequencies;
џconnecting to the instrument input of a guitar amplifier (as an effects pedal), to the RETURN of a guitar amplifier, or to a
final power amplifier (as a preamp);
џbuilt-in speaker simulator for line connection and recording devices;
џdedicated headphone output.

R&R SOUND AMPLIFICATION SL/LD MultiGain PRE-AMPLIFIER
MANUAL 1-3
CH-1 CLEAN (clean channel):
The “GAIN” control plays a key role here, and at low values the sound is well suited for playing picks, drumming rhythms, etc.,
while at high values there is a “glass” - a crystal clear, transparent sound suitable for blues solos. When using powerful
humbuckers and the GAIN control close to the maximum, you can get a slight crunch. Excellent channel dynamics allows you
to highlight the solo with a simple increase in attack. There is a 3-band pre-gain EQ for fine-tuning the sound.
CH-2 LEAD-1 (overdrive channel):
Quite significantly overloads the sound. Suitable for playing blues, hard rock and heavy metal from the 70s and 80s. Works
well in other styles that don't require hi-gain overdrive. Transparent, warm, overtone-rich sound, harmonics “shoot” from
under the fingers even at low levels of the GAIN control. The BRIGHT switch will add "glass" to your solos, and the rhythm will
sound sharper. The presence of a 3-band post-gain EQ and a PRESENCE control allow you to create a wide palette of sounds.
CH-3 LEAD-2 (drive channel):
Very dense, aggressive, heavy and fat HI-GAIN overdrive - "that" Californian sound. The stock of gain is incredible. The
warmth and compression of the tube is excellent. The sound is very versatile and is well suited for both GARY MOORE's
stringy solos and the tight rhythm of the heaviest styles. Good readability in low tunings. There is a 3-band EQ located after
the gain. The PRESENCE control will make your part stand out in the mix.
R&R SL/LD MultiGain PRE-AMPLIFIER. OVERVIEW

1-4 R&R SOUND AMPLIFICATION SL/LD MultiGain PRE-AMPLIFIER
MANUAL
џhave the appliance repaired only by qualified personnel.
џoperation is allowed only under strict observance of all instructions and recommendations set out in this manual.
џdo not store or operate the instrument in high humidity environments.
џdo not place the device in direct sunlight or near heating devices.
џdo not operate the device without reliable grounding.
џwhen connecting to the mains, make sure that the voltage meets the power supply requirements of the device (indicated
on the nameplate or on the cover of the device).
џin the event of a fire, unplug the power cord from the appliance.
џreconnection of cables is carried out only when the equipment is turned off.
џdo not use excessive force when using the switches and controls.
џavoid touching the heated lamps of the device.
џturn off the device before replacing the lamps; the cooled lamp must be removed from the base by slightly rocking in
different directions.
џwhen replacing lamps, install only serviceable lamps of the appropriate type and in their respective sockets.
џdo not use solvents to clean the body of the instrument, use a clean, dry cloth for this.
џIf the device is not used for a long time, it must be disconnected from the mains.
PRECAUTIONARY MEASURES

1
2
3
CH-3
LEAD-2
LEAD-1
MASTER ROUND
EDGE
OFF
R&R SOUND AMPLIFICATION SL/LD MultiGain PRE-AMPLIFIER
MANUAL 2-1
FRONT PANEL CONTROLS
turn on / turn off
channel CLEAN CH-1
CLEAN LED
Green indicator of activity of the
first channel (CLEAN CH-1).
6
BASS
Control of the amount of low
frequencies in the signal for the
first channel.
CLEAN / LEAD
Select whether the CLEAN channel
(CH-1) or LEAD channels (CH-2
and CH-3) are active.
7
POWER ROUND/OFF/EDGE
Modes:
ROUND - more viscous,
compressed sound. POWER LED
Red glow power indicator.
MASTER
Output level control (setting the
overall signal level for the three
channels).
1
2
3
OFF - turned off.
EDGE - sharper, sharper sound.
24
3 5 6 7
INPUT
GAIN
TREBLE
MID
BASS
CH-1
LEAD
CLEAN
1
INPUT
Instrument input for connecting a
guitar.
1
5
GAIN
Control of the overall gain and
sensitivity of the first channel.
2
TREBLE
Control of the amount of high
frequencies in the signal for the
first channel.
3
MID
Control of the number of mid
frequencies in the signal for the
first channel.
4

BASS
Controls the amount of low
frequencies in the signal for the
second channel LEAD-1 CH-2 and
the third channel LEAD-2 CH-3,
respectively.
2-2 R&R SOUND AMPLIFICATION SL/LD MultiGain PRE-AMPLIFIER
MANUAL
channels LEAD CH-2 и CH-3
18 19 110 111 112 113 11
161514131211
114 11115
17
1
GAIN
Controls the overall gain and
sensitivity of the second channel
LEAD-1 CH-2 and the third
channel LEAD-2 CH-3
respectively.
TREBLE
Controls the amount of high
frequencies in the signal for the
second channel LEAD-1 CH-2 and
the third channel LEAD-2 CH-3
respectively.
2
9
10
MID
Controls the amount of mid
frequencies in the signal for the
second channel LEAD-1 CH-2 and
the third channel LEAD-2 CH-3,
respectively.
311
4
PRESENCE
Transparency control for the
second channel LEAD-1 CH-2 and
the third channel LEAD-2 CH-3
respectively. Allows you to control
higher frequencies than the
TREBLE control.
5
12
13
MASTER
Master volume for the second
channel LEAD-1 CH-2 and the
third channel LEAD-2 CH-3
respectively.
614
LEAD-1 / LEAD-2 (CH-2/CH-3)
Selects the activity of the LEAD-1
CH-2 channel and the LEAD-2
CH-3 channel.
4
“LEAD-1” LED
Blue glow indicator of activity of
the second channel LEAD-1 CH-2.
8
“LEAD-2” LED
Indicator of red glow of activity of
the third channel LEAD-2 CH-3.
15
GAIN
LEAD
CLEAN
MIDTREBLE PRESENCE
BASS MASTER
CH-3
LEAD-2
LEAD-1
CH-2
MA
FRONT PANEL CONTROLS

INPUT
CH1-CH3 FX LOOP POWER AMP LINE OUT REC OUT FX
CH-2
BRIGHT
NORMAL
FX
SERIAL
PARALLEL
6
PHONES MIX SEND RETURN
123456
CH-3
A250K
A1M
BACK PANEL CONTROLS
R&R SOUND AMPLIFICATION SL/LD MultiGain PRE-AMPLIFIER
MANUAL 3-1
network connection, input / outputs
1
AC 110V or 230V
Connection to network ~110 Volts
(~230V).
LINE OUT
LINE OUT for connecting to the
instrument output or FX RETURN
loop return of a combo amp.
Designed for switching with more
sensitive outputs compared to the
signal from the POWER AMP
output.
4
PHONES
Headphone output.
2
POWER AMP
Output for connecting to the input
of a power amplifier.
3
REC OUT
Output from the speaker simulator
for connection to a mixer, to
recording devices or to a
computer sound card. Designed
for recording with stack sound
emulation.
55
INPUT
Instrument INPUT input for
connecting a guitar.
6
FX LOOP
1
SERIAL / PARALLEL
Switches from SERIAL FX LOOP to
PARALLEL FX LOOP and vice
versa.
SEND | RETURN
Controls the level of the signal
sent by SEND to and returned by
RETURN from the FX LOOP.
3
LEAD | CLEAN ON/OF
Turns the effects loop on/off for
the LEAD channels CH-2 and CH-
3 and the clean channel CLEAN
CH-1 respectively.
55
4
MIX
Controls the amount of signal
processed in the FX LOOP in the
overall mix in relation to the
unprocessed signal.
2
5
6
FX SEND | FX RETURN
SEND and RETURN jacks for
connecting external effects.
78
12345
876
NORMAL
FX SEND FX RETURN
REC OUT
FX SENDLINE OUT
POWER AMP
FX LOOP CH3
CH-2
BRIGHT
PARALLEL
FX
SERIAL MIX SEND RETURN LEAD
FX ON OFF
CLEAN

3-2 R&R SOUND AMPLIFICATION SL/LD MultiGain PRE-AMPLIFIER
MANUAL
modes BRIGHT / NORMAL second channel,
external preamp control
1
FSW CH-1, CH-2, CH-3 | FSW LOOP
Selects the activity of the CLEAN, LEAD-1, or LEAD-2 channels and controls
the FX LOOP (on/off) with external 2-button foot controllers FSW CH-1,
CH-2, CH-3 and FSW LOOP respectively.
2
type, location and purpose of lamps
Channel input CH-1 CLEAN
V1
Channel input CH-2 LEAD-1 and CH-3
LEAD-2
V2
Channels CH-2 LEAD-1 и CH-3
LEAD-2
V3 V4
FX LOOP
V5
V1V2
V3
V4
V5
1
1
Tubes 12АХ7 (V1...V5)
iThe delivery set includes only the FSW CH-1, CH-2, CH-3 channel control controller and its execution is
not specified in this manual.
ATTENTION! Turn off the power before replacing lamps.
The cooled lamp must be removed from the base by slightly rocking in different directions.
When replacing lamps, install only serviceable lamps.
!
IN
OFF
TURN
BACK PANEL CONTROLS
modes A250K / A1M third channel
1
A250K / A1M
Controls the GAIN knob for the third channel CH-3 LEAD-2. Switch between
A250K and A1M modes.
2
CH1-CH3 FX LOOP POWER AMP
CH-2
BRIGHT
NORMAL
FX
SERIAL
PARALLEL
PHONES MIX
CH-3
A250K
A1M
1 2
CH-2 BRIGHT / CH-2 NORMAL
Switches between BRIGHT and NORMAL modes for the second channel
CH-2 LEAD-1. The BRIGHT mode adds brightness to the sound, unlike the
NORMAL mode.
CH1-CH3 FX LOOP POWER AMP
CH-2
BRIGHT
NORMAL
FX
SERIAL
PARALLEL
PHONES MIX
CH-3
A250K
A1M
1 2

WIRING SCHEMES
R&R SOUND AMPLIFICATION SL/LD MultiGain PRE-AMPLIFIER
MANUAL 4-1
PHONES
INPUT
CH1-CH3 FX LOOP POWER AMP LINE OUT REC OUT FX SEND FX RETURN
MIDI FC
Effects pedals
Effects Processor
MIDI IN
INPUT
RELAY
OUT
FSW
CH1-CH3
INPUT
FX
SEND
FX
RETURN
OUTPUT
Recording devices, mixer
Combo amplifier
Amplifier
Cabinets
Two-button foot
controllers
CH1-CH3
LOOP
FSW
LOOP
FSW
CH1-CH3
POWER AMP
POWER INPUT
LINE OUT
INSTR. INPUT / FX RETURN
REC OUT
MIX SEND RETURN LEAD
FX ON OFF
CLEAN
CH-2
BRIGHT
NORMAL
FX
SERIAL
CH-3
A250K
A1M PARALLEL