Genz Benz Shuttle Max 9.2 Owner's Manual page 6

EFFECTS LOOPS – The serial "EFFECTS LOOP" jacks are provided to allow access to the signal for the purpose of
inserting signal processing equipment such as compressors, chorus, delay & reverb processors. Individual pre-EQ
loops are provided for the TUBE channel and the FET channel. An additional MASTER post EQ loop is provided for
the summed (TUBE + FET) signal. This loop may also be used as a PREAMP OUTPUT or POWER AMP INPUT patch
point. "SEND" (output) and "RETURN" (input) are nominal +4 dB level.
"Series" devices (such as compressors and gates) require that the signal flow out from the send jack on the amplifier,
through the processing device and back into the return jack on the amplifier. Parallel or mixed signal devices (such
as chorus, delay and reverb processors) require that the signal flow out of the send jack on the amplifier, through the
unit where it is split into a dry (unaltered) signal and a wet (processed) signal. On the processing unit, you will use the
mixed signal output to return the signals (both wet and dry) to the return jack on the amplifier. The ratio between the
wet signal and the dry signal is heard as the amount of effects added back to the original signal, which is controlled by
the mix knob (also called "balance") on the effects processor. This may be a real knob (as in the Alesis® Microverb), or
software controlled (as in the Yamaha SPX-90, SPX900 or SPX 990). Set the input sensitivity on the effects processor
according to the manufacturer's instructions.
The front panel MUTE switch will shut all of these outputs down when engaged.
FOOTSWITCHES – A DIN connector is provided for connecting the
included 5-button footswitch. This footswitch controls CHANNEL
switching and mixing along with all the GLOBAL SIGNAL SHAPE
circuits. Additionally a ¼" footswitch jack is also provided for switch-
ing the MUTE function separately. Any single button latching style
footswitch will operate this function.
HEADPHONE OUT – A 1/4" TRS jack is provided for connection to headphones for silent practice use. A speaker
load is not required. Do not connect this output to anything but headphones.
POWER AMPLIFIER – The SHUTTLE
quency switch-mode power supply (SMPS) to achieve unprecedented high performance and lightweight packaging.
Switch-mode power supplies convert the AC line directly to high voltage DC, then the precision PWM (pulse width
modulation) inverter creates a new AC power signal at a frequency more than 1000 times higher than the original
wall frequency of 50/60Hz. This new high voltage, high frequency power signal is then fed into a custom high fre-
quency transformer that steps the voltage down, a high frequency rectifier and high ESR filter capacitors finish the
process off by converting the high frequency AC signal back to the DC voltages that the amplifier's internal circuitry
uses. One advantage of this conversion process is that the DC power supply rails are refreshed more than 1000
times more often than in traditional linear supplies, thus reducing annoying hum in the audio signal. The high fre-
quency switching is used to reduce the size and weight of the magnetic and filter components while increasing the
performance by recharging the power supply rails more often. The Class D amplifier uses digital PWM techniques
similar to those in more familiar digital to analog converters to reduce the size and weight by a factor of 10 times
that of a comparably rated conventional Class AB amplifier. Essentially, a Class D amplifier converts the analog
signal into a logic level PWM digital signal with an analog to digital converter, level shifts this PWM signal up to a
higher voltage and current and then reconstructs the analog signal by passing it through what is essentially a power
digital to analog converter. Additionally, we developed our proprietary 3DPM™ technology to give a distinctly analog
feel and sound to the Class D platform. This system provides exceptional performance even for low frequency ap-
plications such as bass guitar.
SPEAKER OUTPUTS – The SHUTTLE
speaker jacks are paralleled. The minimum speaker load is 4 ohms. Do not ground either the "+" or the "-" out-
puts.
®
9.2 uses a state of the art, Class D power amplifier design and a high fre-
®
9.2 provides two Neutrik Speak-On™ connectors (wired 1+/1-). The
6