Genz-Benz shuttle 3.0-8t ユーザーガイド

TUNER OUTPUT – The SHUTTLE 3.0® is equipped with a fully isolated Tuner Output. This jack is located after the front 

end scaling preamplifier, but is pre-signal shape and pre-EQ. This output may also be used to drive a separate direct box 

or high-impedance recording device. The Tuner Output remains active when the amplifier is muted, allowing silent tuning 

on stage.

DIRECT OUTPUT – An XLR balanced direct output is provided for connection to a PA system or directly into a recording 

studio console or D/A converter. The Direct Out signal may be switched between mic and line level, pre and post gain/EQ, 

and the audio signal ground may be connected or lifted from pin 1 to eliminate hum due to ground loops. This output is 

fully protected against 48 volt phantom power, and may be used for driving microphone lines of up to 300 feet without 

problems

SIGNAL SHAPE – The SHUTTLE 3.0® is equipped with 3 Signal Shape circuits. The L.F. BOOST adds low frequency 

peaking gain in the 38-67 HZ band. This filter is especially effective when used with a 5 string bass. The MID SCOOP 

switch generates midrange cut at approx. 800-1KHz, the H.F ATTACK adds a peaking high frequency boost in the 

2.25-8kHz band. LED indicators are provided to visually show when each filter is engaged. Each filter Q (bandwidth) is 

optimized for its particular functions and is different for each filter.

ACTIVE EQUALIZATION – The SHUTTLE 3.0® contains an active 3 band equalizer with sweepable parametric mid-

range frequency control. This equalizer, similar to those found on professional sound consoles, is a very useful tool. 

The low frequency EQ section is an 80 Hz shelving curve with 15dB of cut or boost. The high frequency EQ section is 

a 3.5 kHz shelving curve with 15dB of cut or boost. The parametric sweepable-mid frequency section features 12 dB 

of cut or boost with a bandwidth approximately 1 octave wide. The center frequency of this filter is continuously user 

adjustable from 150 Hz to 2 kHz with a single control. This filter is typically (but not always) used to reduce or remove 

offending frequencies in the instrument’s pick-up response, or boosting response to achieve a particular voicing. Spend 

some time experimenting so that the process becomes creative as well as corrective. Note that our active equalizers 

are very wide response and a little bit can go a long way.

MASTER VOLUME – The master volume control adjusts the overall volume of the amplifier and the effects return. Typi-

cally, best results are obtained when this control is operated between the 9:00 and 3:00 positions.

OUTPUT LIMITER – The SHUTTLE 3.0® contains an internal power amplifier “Soft Clip” Limiter. This Limiter allows 

simulation of the output stage saturation as the amplifier nears it maximum power. The limiter is a compound multi-

stage analog circuit, is quite graceful in nature and is particularly musical sounding, even when driven hard.  The output 

“CLIP/LIMIT” LED shows limiting action at the maximum power threshold and then indicates power amplifier clipping as 

the power amplifier gradually transitions into gentle clipping.

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The “OPERATE” light indicates that the amplifier is ON and the low voltage power supplies are active.

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The red “STANDBY” LED indicates that the amp is in “standby” mode and the power amplifier output 

 

de-energized. This led will Illuminate for approximately 1.5 seconds during power turn–on and turn-off.  It will  

 

also illuminate during any internal fault condition such as overheating from 2 ohm operation. If the stand-by  

 

LED stays on, consult a repair technician.

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The blue “SIGNAL” LED indicates that the power amplifier is receiving signal (over several watts output) and  

 

is performing properly.

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The red “CLIP/LIMIT” indicates that the power amp has reached maximum power and for 6dB after this 

 

threshold has been crossed it is in soft clip/limit mode. It is normal that this LED will light with the strongest  

 

pulses of the signal. Driving hard beyond this point will cause the amplifier to gradually begin to clip.