SPL Cabulator 2930, Manual

Page: 10 / 20

10
Cabulator
Speaker In
Here you connect the guitar amp‘s loudspeaker output.
Connector variant and pin configurations follow industry standards: Unbalanced 1/4" jack
connector with the signal at the tip and ground at the sleeve.
As with any typical amp and cabinet cabling, it is critical to observe loudspeaker
cable of a minimum 1.5 mm2 cross section. Instrument or line cables can lead
to amplifier damage!
We recommend to use cables with a maximum length of 3
meters/10 feet for lossless signal transmission.
IMPORTANT WARNING ON CONNECTING GUITAR AMPS
Many guitar amps are not designed for sustained maximum level operation, and if run this
way, it can lead to overloads and power amp damage. At high levels, amps can produce high
frequency oscillations which can destroy output transformers. Moreover, this can cause
audible unwanted output transformer distortion. Such problems are not a result of Cabulator
use, but reside within the guitar amp.
Even in situations where you might wish to push the guitar amp to its limits in conjunction
with the Cabulator, you should always be sure to allow for ample power reserves to avoid
endangering the amp itself!
In the same way a guitar amp and box should never be run knobs full to the right, so should
you avoid running the Cabulator this way. Therefore we strongly recommend that the guitar
amp should never be run at over 70% of its maximal signal level!
Look for the amp‘s “Sweet Spot” as you make adjustments to it. This is almost never in the
upper level output range. Where the amp‘s bass starts to sound “spongy” and somewhat
undifferentiated is the place where your master level control should be turned back.
The guitar amp output must be rated at 8 ohms! Only connect amplifiers rated at a 100 W
maximum to maintain a further 100 W reserve for signal peaks. A guitar amp may be used
ONLY within its normal operating parameters.
The Cabulator may be loaded up to 200 W. But
please note that a 100 W amp at higher volumes, eventually combined with further effects,
produces peaks far above 100 W. Therefore we strongly recommend connecting amps rated at
a maximum of 100 W.
Soak Output
This output provides the amp signal reduced by the power soak, but without sound simula-
tion. It allows for the connection of an additional 4, 8 or 16-ohm cabinet. This setup makes it
possible to have a traditional amp and cabinet combination on stage and at the same time,
route the D. I. OUTPUT to P. A. or recording.
At SOAK OUTPUT the amp signal appears as reduced with the POWER SOAK control. The
minimal reduction is -8 dB with the POWER SOAK control turned fully right (refer to POWER
SOAK control on page 12). With this “volume control” between amp and cab, the guitar amp
can be driven into saturation also at moderate listening levels.
Connector variant and connections follow industry standards: Unbalanced 1/4" jack connector
with the signal at the tip and ground at the sleeve.
As with any typical amp and cabinet cabling, it is critical to observe loudspeaker
cable of a minimum 1.5mm2 cross section. Instrument or line cables can lead
to amplifier damage!
We recommend to use cables with a maximum length of 3
meters/10 feet for lossless signal transmission.
IMPORTANT NOTE: Turn the POWER SOAK control fully left if no cabinet is connected to the
SOAK OUTPUT. Otherwise the impedance at the SPEAKER IN increases. This is not critical but
reduces the power of the input signal at the SPEAKER IN.
Rear Panel
Connections
SPEAKER IN
SPEAKER IN
8Ω
Load Only !
Connect to Speaker
Out of Amplifier
Max: 100 Watts
T ip = (+)/ Sleeve = GND
SOAK OUTPUT
SOAK OUTPUT
Power Soak
Output
T ip = (+)/ Sleeve = GND
Connect to
Speaker Cabinet
4 Ω to 16 Ω Load