8 Ohms Parallel
1 x 8 Ohms or 2 x 16 Ohms
16 Ohms
4 Ohms Parallel
1 x 4 Ohms or 2 x 8 Ohms
8
8
8
8
L
L
R
R
Lo Lead
Bottom
Ch II Gain
Ch I Gain
Hi Lead
Bottom
Bright
Bottom
Bass
Bass
Mid-open
Middle
Mid-focused
Treble-Clean
Treble
Treble-Crunch
Lo Lead Vol.
Clean Volume
Crunch Volume
Hi Lead Vol.
open/
focused Ch I /II
Gain
Lo /Hi
Master A
Presence
Master B
Depth Punch
Power Tube Monitor
V1
V2
V3
V4
Input
Power
Stand By
Powerball
Amp
Tube
R
6L6GC
powered
Lo Lead
Bottom
Ch II Gain
Ch I Gain
Hi Lead
Bottom
Bright
Bottom
Bass
Bass
Mid-open
Middle
Mid-focused
Treble-Clean
Treble
Treble-Crunch
Lo Lead Vol.
Clean Volume
Crunch Volume
Hi Lead Vol.
open/
focused Ch I /II
Gain
Lo /Hi
Master A
Presence
Master B
Depth Punch
Power Tube Monitor
V1
V2
V3
V4
Input
Power
Stand By
Powerball
Amp
Tube
R
6L6GC
powered
8
int.
Gain 2
Middle
Treble
Volume 2
Input
Bass
Hi
Gain
Gain 1
Middle
Treble
Volume 1
Depth Punch
Bass
Presence
Bright
Master B
Master A
Power
Stand By
RAIDER 100
Master
A/B
FX
Loop
Reverb
Reverb
Mid
Boost
off / on
CH 1
Power Tube Monitor
V1
V2
V3
V4
Clean
Bright
CH 1
CH 2
Amp
Tube
8
8
8
8
L
L
R
R
internal
speaker
4. two 100 watts amp heads or a Stereo Poweramp (e.g. E850) combined with
one ENGL 412 speaker cabinet set to stereo mode
SPEAKER CABINET
RIGHT
THRU
LEFT
INPUT
R
Amp head #1: Poweramp Output
Stereo Poweramp: Left channel
8 Ohms Parallel
1 x 8 Ohms
2 x 16 Ohms
4 Ohms Parallel
1 x 4 Ohms
2 x 8 Ohms
16 Ohms
4
8
Or
8
And
Or->
8
16
Or
16
And
16
STEREO
MONO
set to
Stereo
412 cabinet:
rear connection panel
Amp head #2: Poweramp Output
Stereo Poweramp: Right channel
8 Ohms Parallel
1 x 8 Ohms
2 x 16 Ohms
4 Ohms Parallel
1 x 4 Ohms
2 x 8 Ohms
16 Ohms
4
8
Or
8
And
Or->
8
16
Or
16
And
16
5. a 100 watts combo amp combined with one ENGL 412 speaker cabinet
SPEAKER CABINET
RIGHT
THRU
LEFT
INPUT
R
STEREO
MONO
set to
Mono
412 cabinet:
rear connection panel
internal speaker
impedance:
8 ohms
cabinet speaker
impedance:
8 ohms
connected in parallel
results 4 ohms
output impedance:
4 ohms
Combo Amp: Poweramp Output
speaker impedance:
16 ohms Left side
16 ohms Right side
output impedance:
16 ohms
at each poweramp
or stereo channel
