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GENZ BENZ ENCLOSURES
250/500 BASS AMPLIFIER
OWNERS MANUAL
(Rev: 1/14/2006)
GENZ BENZ - Model 250/500 Bass Amplifier (Page 1, Rev: 1/14/2006)
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Design Philosophy - With experience designing and manufacturing both bass guitar speaker cabinets and amplifiers, it became obvious that there is a large market for a bass amplifier that reproduces the natural tones of the instrument itself. With many amplifier manufacturers hyping their “distinctive” sound, it seems forgotten that the player has chosen his instrument for it’s feel, playability and tone. Why then, should the amplifier manufacturer feel compelled to change this sound? A
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GENZ BENZ - Model 250/500 Bass Amplifier (Page 3, Rev: 1/14/2006)
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Inputs - Two inputs are provided, passive and active. The passive input has a higher gain and input impedance which is tailored to the characteristics of passive pickups. 2 distinct types of passive pickup exist (there are some exceptions which aren’t important for this discussion). A passive magnetic pickup consists basically of a permanent magnet (or one for each string), called a pole piece, with a wound wire coil around it. As the string interrupts the magnetic field, the coil pick
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Tube Dynamics Controls - The harmonics and saturation controls, in conjunction with the tube gain control, allow additional control of preamp overdrive variables. The saturation control affects primarily the apex of the waveform, similar to the effect of overdriving and saturating the output or interstage transformer of a tube amplifier. Our implementation generates a distortion rich in second harmonics and subtle waveform compression. The harmonic control affects the waveform closer
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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 sensit
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A ground lift switch is provided which opens pin 1 (shield) on the direct output to prevent ground loops. Use the position that results in a minimum of noise. The output level is nominal line level (typ. between -10 and -30 dB), pin 2 hot. This output is fully protected from the effects of phantom power provided by the mixing console and does not require phantom power to operate. Output Jacks - The 250 series amplifiers feature standard 1/4” speaker jacks, one for the internal s
