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
3. FRONT PANEL MIC / 4. STEREO IN
3.1
3.2
3.3
3.4
3.5
3.6
3.7
4.1
3.1. MIC INPUT
This input is electronically balanced for XLR type connections. The new MIC/DYN channel is now
conceived for any kind of signal sources. You can plug in vocal microphones. The electronics will adapt to
any situation. No special action is required.
3.2. P24
The amplier’s XLR input provides 24V phantom power for use with a condenser microphone. Most
condenser (and dynamic) microphones, along with some preamps, can be safely phantom powered. In
certain cases however, phantom power can cause damage to a device.
This tends to occur with unbalanced microphones, preamps or stompboxes that have been modied for
balanced XLR use.
For any doubt, please contact us to check the compatibility of your audio device before using the amplier
3.3. GAIN
This variable gain preamplier adjusts the sensitivity level to ensure the best possible processing of the
MIC 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.
3.4. OVERLOAD
This LED (when lit) indicates that the level of the inputsignal is too high and it might introduce distortions
3.5. 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 MID 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.
3.6. REVERB
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 to send to an external effect unit or to an additional
monitor.
3.7. VOLUME
This rotatory control regulates the channel volume
4.1. STEREO IN
Mini Jack stereo 3.5mm input for PC, MP3 and several electronic devices. The volume depends on the
MASTER-VOL regulation