Congratulations on the purchase of your new George
Lynch Signature “LynchBox”
RANDALL
Amplifier!
George and all of us at Randall Amplification appreciate
that you chose this amplifier. We spent a lot of time at the
bench with George helping us refine the tone and gain
structure into this bad-ass machine you just pulled out of
the box.
Please review the safety instructions below and be
aware that the documentation provided in this manual
references 120volt USA versions of the models
covered. Note that the POWER listed on the back of
the unit should be for your countries’ power standard.
A M P L
I
F
I
E R S
RM50/RM80
M O D U L A R T U B E C O M B O S
O W N E R S
M A N U A L
16. Speaker Outputs:
MINIMUM 4
Ω
LOAD !!!!
- LB50C- Celestion “LYNCHBACK speaker already plugged in.
- LB50C can accommodate LB112 Extension plugged into 2nd
Speaker output >
This is a very cool setup as you get both a open
and closed back blend
- LB50H - plug in (1) or (2) LB112 8
Ω
Extension speaker cabs
- LB50 will run with 16
Ω
load , but will not have %100 full output
volume/wattage
17. Blend knob controls amount of effect signal mixed into effects
loop.
18. Effects loop return- the output from external effects are
inserted here. This is also the power amp input.
19. Effects loop send -the input from external effects are inserted
here. This is also the preamp output.
20. Footswitch jack- Standard 1/4” TRS controls Channel and
boost
(Randall Model RF2T2C)
*IMPORTANT NOTES ON TUBES*
LB50 Amplifiers are “self biasing” so no adjustments are needed
and come with EL34L stock. The added bonus to this style of
circuit is that many different power tubes can be used in the amp
without any modification.
YOU MUST USE THE SAME (2) MODEL
POWER TUBES AT THE SAME TIME- NO MIX AND MATCH!
*The user will also experience different tone variations and various
levels of output wattage-- many under 50 watts*
Use the following power tubes:
EL34/6CA7/6L6/5881/6550/KT88/KT77/6V6
1. 1/4” Guitar Input
2. “
JUDGE
” Channel gain- this channel is George
ʼ
s
heavily modded out plexi style tone - versatile for
Blues all the way to Metal.
3. “
JUDGE
”
Channel Volume
4. Channel Selector Switch
(Footswitchable)
5. “
SUPER V
ʼ
’ Channel Volume -this is a
ʻ
Chimey
ʼ
vintage british style tone that is mostly clean but
breaks up nicely with the gain knob pushed
6. Boost - Adds layer of tube overdrive to both
channels
(Footswitchable)
7. Bass EQ Response
8. Midrange EQ Response
9. Treble EQ Response
10. Presence Response
11. Master volume controls overall output
12. Standby/Play switch- Wait 5 seconds after
powering amp on before switching from Standby to
Play and -visa/versa.
13. Power switch turns unit on and off
14. Power cable input for mains connection.
