Reasons For Dynamic Losses In The Effects Loop - Diezel Einstein User Manual

to adjust the input levelof the effects unit to the amplifiers level. Most effects
units have led bar or otherlevel control devices. The Output of the effects unit
must be connected to one ofthe return jacks, parallel,, or serial. If you use the
parallel return, then the signalcan be mixed to the original signal via the rear
panel mounted "Volume" control.
3.2.2 Parallel or Serial
Which is better for you? Read on.There are 2 ways to handle effects signals.
The serial loop interrupts the signalpath of the Einstein and the signal is sent
to the processor, becomes processed,then sent back to the serial return into
the power amp. Digital effects units oftendigitize this signal once received,
then process the signal, convert it back toanalog, then send it to the amp. This
is called ADA (analog digital analog)conversion. It is necessary for digital
effects units digitize your guitar signal sothat the processor can read and
understand signal. Your tubes, however, need ananalog signal to operate, so
the processor converts the signal back to analogbefore it goes back to the
amp. Generally, even in highest quality effectsprocessors, this causes a change
in the original signal, typically a loss of tonalityand warmth, also noticeable as
a "harder" sound. When you use the serial loop foran effects unit like this, then
your signal will have been ADA converted at leastonce. Tone junkies and
vintage freaks alike will more than likely have hivesdeveloping by now. But - as
always, there is a better way. Use the Parallel loopand the Volume control in
the rear determines how much effect signal is beingadded to the original
signal, which now still flows through the amplifier. There isalways an analog
connection between the send and return jacks; a parallel loop!Important: You
must set the mix control on the effects unit to 100% wet when using the
parallel loop. Otherwise there will be nasty phasing problems resultingin
unsatisfactory tone. The signal portion that is unaffected by the mix control
inthe effects unit would reach the amplifier at a different time due to the
cabling,and cause phasing cancellations.
3.2.3 Top 5 Reasons for dynamic losses in the effects loop
Many different factors can be responsible for loss of dynamics, aside from
thosementioned in 3.2.2 (ADA conversion). A vital point that often leads to
frustrationis a maladjusted output level of an effects unit. If the output level is
too high, thenit will cause unwanted distortion in the power amp. If it is too
low, then the rig
will not sound punchy and might get lost in the band sound. When used in the
serial loop, the output of the effects unit determines the ultimate drive signal
strength of the power amp. The output level should be matched to give the
best possible sound with all channels without over driving the power amp
section. (Unless this is desired for power amp distortion) Headroom
adjustments of 10% are usually sufficient.