Rivera 9000-0011-0037, Руководство пользователя

Страница: 11 / 19

Of course, you can use pedals and rack-mounted effects between your guitar and the amp. In fact,
that’s where most wah-wahs and other pedals sound exceptionally good. However, rack signal
processors are often best suited to being placed after the preamp’s tone-shaping circuitry. Your
Sedona’s Effects Loop is designed to give you the best match between the amp and the processor
by allowing you to set the level of the signal going to the effect, as well as the one coming back.
Therefore, you can tailor your amp/effects levels for best signal-to-noise ratio and the amount of
distortion you want. The Anti-Feedback Equalizer is placed in the signal chain after the Effects
Loop.
Note: The Effects Loop send can be used to route a signal to a guitar tuner.
The Effects Loop comes after the preamp and reverb sections. In addition, its low-impedance
circuitry lets you drive everything from the simplest stomp-box effect to the most sophisticated pro
signal processor with excellent results. It’s also fully buffered, meaning that it can drive long cords
and line-level gear and mixing consoles. (Because the signal is electrically unbalanced, you can use
an unbalanced-to-balanced output transformer to connect to equipment requiring a balanced input.)
Before you connect a signal processor to your amp, either turn the amp off or to standby.
Use high-quality shielded cords between the amp and processor. Never use a speaker cord.
Setting Effects Loop levels
1. After you connect the amp’s Send and Return with the signal processor’s input and output, set
the amp’s Send Level and Return Level between 1 and 2.
2. Plug in your guitar, turn the signal processor on, and then turn on the amp (or flip the standby
switch).
3. Set the amp’s Effects Loop Send Level and the signal processor’s input level so that you don’t
overload the processor. Keep your ears open for unwanted distortion from the signal processor
(you’ll know it by its crackly, unmusical sound). Whack a few chords on your guitar to check that
your settings are correct.
4. Now turn up the Effects Loop Return knob until the proper volume and overdrive are dialed in.
You’ll
probably have to experiment with the signal processor’s output level until you get the best
sound and lowest amount of noise.
5. Make sure that you set your straight/effects blend at the signal processor, since all of your
preamp’s signal is passed through the Effects Loop. Do not use an effects-only output to return
from the processor to the amp. Always use the “mix” output, if the unit has one.
The Effects Loop Send is configured so that it is always active, so you can use it as a variable
output. Note that if you use the Send to drive slave amps, etc., and have nothing plugged into the
Return jack, the signal still passes from the preamp to the power amp.
Direct Out
Internal to Sedona is a direct box with an adjustable level output. It is terminated with an
unbalanced-line 3-pin XLR male-type connector, and can drive impedances as low as 600 ohms.
The signal-level output is continuously adjustable and can be set from below Instrument level
(-20dBv) to line level (+10dBv). This level is ultimately determined by the strength of the signal
from the instrument. Like any true direct box, the signal that is present at the ¼ output is directly
from the instrument, fully buffered.
Direct Level Control
To adjust the output of the Tube Direct Box, rotate the Level control until the desired level is
obtained. If you are connecting to a recording or broadcast-quality mixer, try bypassing the mixer’s
microphone preamp and plug in prefader. This may require increasing the level control’s setting,