8.6 Keyed Bass
As a special effect, try using the signal from a kick drum to key a gated bass. This technique
will tighten the "signal start" relationship between the two instruments. Since the bass will
not be heard until the drum is played, the result is a perfectly tight kick/bass combination.
EQ
RETURN(TIP)
SEND(RING)
IN/OUT
SIDECHAIN
EQ OUTPUT
EQ INPUT
COMPRESSOR
-10 -12 -15 -25
-40
-10
BYPASS
RATIO (X:1)RELEASE
1
10
2
-8 -6 -4 -2
FAST
SLOW
+10 -25
THRESHOLD (dBu)
1.3 2.5
q
The expander threshold control varies the amount of action; higher settings are crisp, lower settings
merely increase the volume when the kick drum keys the expander.
q
Use the release control to make the expander follow the music.
8.7 Sibilance Control
Patching an equalizer into the sidechain can cause the 425 to respond more or less to selected
frequencies, giving it the ability to make sibilance problems less apparent. Fine tuning
between the compressor threshold, ratio, and the EQ boost applied in the sidechain will have
to be made to arrive at premimum results.
q
To find basic settings, start with a fairly high ratio (5:1 or so), and a compressor threshold
setting between -20 and -5. Cut the low frequencies on the equalizer and give a 15 dB
broadband boost to the EQ at around 5 or 6kHz. Now, carefully "tweak" the threshold
setting as you count "four, five, six." What you're looking for is no compression on "four,
five," and somewhere around 9 dB of gain reduction on the word "six."
q
You can refine the setting by listening to the equalizer output and adjusting the EQ to
emphasize the sibilance in the source. Remember that you're equalizing the signal to
emphasize the sibilance, not to sound groovy. Let the 425 do that.
q
Do you have a recording where the cymbals drive you nuts?...try the same technique on
the overall mix.
q
Set the peak limiter threshold for 6 dB of gain reduction when Sam Screamer is on the
system.
q
All normal signals will be slightly compressed, and really loud signals will activate the
peak limiter. With these settings a shy person will be audible, and the guy who thinks he
has to shout won't be too loud, or cause distortion.
8-3
Rev 2.0, 10/29/93
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