User Manual
JAM CLASS-A high voltage preamp, no integrated circuits, no NFB
P24
IN
IN
10V
GAIN VOLUMELOW MID HIGH REV (AUX)
RESON
FLAT
OL
150Hz
240Hz
2
IN
P24
GAIN
OL
LOW
HIGH REV (AUX)
VOLUME
OLIN
10V
ø
GAIN
WARM
GAIN
300Hz 3.3KHz
700Hz
PARAMETRIC MIDS
GAIN
300Hz 3.3KHz
700Hz
PARAMETRIC MIDS
LOW HIGH REV (AUX) VOLUME AUX
OUT
1
3 4
STEREO
IN
REVERB
master
DECAY MASTER
LINE OUT
INSERT
DI OUT
5
VOLUMELEFT RIGHT
FX RETURN
1. FRONT PANEL - INSTRUMENT IN
1.1. INSTRUMENT IN
Unbalanced input for the connection of jacks (6.3mm or 1/4”), with optimal sensitivity for high level signals.
The electronics will adapt to any situation. No special action is required.
1.2.PHASE
In case of feedback, or unwanted effects between different channels use the phase reverse switch.
1.3. 10V
Phantom power supplies the Jack connector with 10V for powering electret microphones.
1.4. GAIN
This variable gain preamplier adjusts the sensitivity level to ensure the best possible processing of the
INSTRUMENT IN signal through the channel.
It is important that this input level should be set and optimised in the best way to achieve the cleanest
sound possible.
1.5. OVERLOAD
This LED (when lit) indicates that the level of the input signal is too high and it might introduce distortions
1.6. WARM
When engaged, this low-pass lter damps higher frequencies to produce a warmer sound when using
bridge-mounted pickups such as the SCHERTLER STAT-Series for violin, viola, cello and double bass..
1.7. HIGH, MID, LOW
These controls are devoted to high, medium and low frequency regulation. Offering cut and boost of
±15dB, they allow a wide range of tonal variations to be explored. Parametrics MIDS regulation offers the
possibility to cut or boost a frequency range between 300Hz and 3,3kHz. When the controls are positioned
centrally there is no cut or boost of the selected frequency band.
1.8. REV/AUX
This rotary control sets both the level of the digital reverb on the channel and the level of the signal to the
AUX OUT output. If you want to bypass the on-board reverb, you can set the Reverb Master knob to zero
and use the REV/AUX to control the amount of signal you want to send to an external effect unit or to an
additional monitor.
1.9. VOLUME
This rotatory control regulates the channel volume.
1.1
1.31.2
1.4
1.5
1.6 1.7
1.8 1.9