Publicidad
Idiomas disponibles
Idiomas disponibles
ACTIVE INPUT
The Active input jack should be used with instruments having a built-in (on board) preamp that will
produce signals over 1 volt RMS. Basses with really "hot" pickups may be more compatible with
this input. If you are using a KEYBOARD or BASS PEDAL, etc. with the SM-500, we have found the
best choice to be the Active input.
Note: Using the Active input with a passive instrument may result in a loss of high end transients. Players who roll
off their high end frequencies starting at about 2kHz or who prefer a "darker" sound may prefer to use this input.
If you hear some distortion with your active bass and are using the Active input jack, check your
instrument's battery. Also, make sure that the preamp clip LED is not lit. Following these instruc-
tions can save you and a service technician a lot of aggravation.
GAIN CONTROL
The Gain control adjusts the volume of the preamp section. After the tone controls, Variable
Graphic Equalizer, and Limiter are set to your liking, the Gain control should be set to where the
Preamp Clip LED barely flashes upon striking your loudest note. Then adjust the Master Volume to
the desired volume level. Utilizing these controls in this manner assures the user of maximum sig-
nal-to-noise ratio and prevents distortion caused by the preamp circuits clipping.
PREAMP CLIP LED
The Preamp Clip LED will light if any portion of the preamplifier reaches clipping or runs out of
headroom. This can be caused by the Gain control being set too high or any tone or equalizer con-
trol set in a high boost position. To correct this condition, turn down one of the previously men-
tioned controls.
Note: The Preamp Clip LED indicates that at some point the preamplifier is clipping. No harm is being done to
your amplifier but, clipping of the power amplifier can cause damage to your speakers and is not recommended.
LIMITER
The Limiter circuit prevents the signal from exceeding a preset level. The Limiter control sets the
"threshold," which is the level at which limiting begins to take effect. The Limiter LED will light to
indicate that the signal has reached the limiter threshold and that the Limiter is now active. The
Limiter is completely out of the circuit when the Limiter control is set to the "Off" position. Loss
in volume caused by extreme limiting can be overcome by increasing the level of the Master
Volume control.
Note: If the Threshold is set at maximum and still no limiting effect occurs, the Gain control is set too low and
should be increased to a desired level.
AURAL ENHANCER
SWR's Aural Enhancer control was developed to bring out the fundamental low notes of the bass
guitar, reduce certain frequencies that help mask the fundamentals, and enhance the high end
transients. The resulting frequency response should be similar to that used for recording the bass
in the studio. This effect becomes more radical as the control is turned to maximum. The result is
a more "transparent" sound and is especially noticeable when "slapping" on the bass guitar.
Basically, the Aural Enhancer can be thought of as a tone-shaping control, as it is a passive R/C
network that alters the frequency response throughout the bass spectrum. This pre-shaping is
"blended" into the original signal via the Aural Enhancer control. Exact frequencies affected are
dependent on the characteristics of the instrument used.
SM-500 • 9
Publicidad
