
THE EFFECT DEVICES
360
Spider Audio Merger &
Splitter
The Spider Audio Merger & Splitter is not an effect device, but a utility. It has two ba-
sic functions:
D To merge up to four audio input signals into one output.
D To split one audio input signal into four outputs.
There are no controls on the front panel of this device, only signal indicators.
Merging audio
On the back panel of the Spider are several audio connectors. The left half of the
panel contains four stereo audio input connectors, and to the right of these, one
merged stereo output.
D The principle is simple; all audio signals connected to any of the four in-
puts will be merged and output via the output connectors.
If you connect a mono signal (to a L/Mono input, with nothing connected to the
corresponding R input) it will be output on both merged outputs. This way you can
merge stereo and mono signals freely.
If you connect a signal to the R input only (with nothing connected to the corre-
sponding L/Mono input) it will be output on the R output only.
Practical uses of merging audio
There are many practical uses of merging audio signals together, for example:
D Process several audio signals with the same insert effect(s).
Perhaps you want to process certain channels in a mix with the same compressor,
or use one ECF-42 to filter a group of instruments in a mix. You can also set up a
chain of insert effects and process the merged signals.
D Sub-grouping signals.
It may be practical to control several audio signals using one channel strip in the
Mixer.
D Use merged signals as either carrier or modulator source for the BV512
Vocoder.
You could use several sounds as carrier signal, or modulate the carrier with sev-
eral signal sources.
Splitting audio
The right half of the back panel contains two signal splitters, labeled “A (L)” and “B
(R)”. The two splitters work independently, in the following way:
D The signal fed to the input connector will be simultaneously output by all
four outputs.
For splitting stereo signals you simply use both splitters with “A” for the left chan-
nel and “B” for the right channel.
Practical uses of splitting audio
There are many practical uses of splitting audio signals - here a few examples:
D Create “pseudo” stereo effects from mono signals.
For example, you could route the mono output of a Subtractor to the Spider and
then send two split outputs (from the same row) to different effects and on to dif-
ferent Mixer channels panned left and right.
D It provides a way to instantly switch between (or mix) different variations
of the same signal.
This is a neat way of applying “spot effects” in a mix. An instrument output is split
and sent to three different combinations of insert effect processing. The outputs
from the three effects are routed to separate channels in the Mixer, which could in
turn have different send effects, eq, etc. You then have three different variations of
the same signal that can be easily switched in and out of the mix for drastic sonic
changes - or combined for huge layered sounds.
Four audio input pairs. Merged outputs.
Four split output pairs.Inputs.
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