230
instruction Manual
Aphex Systems Ltd. Model 230Page 4
230
master voice channel
Page 5Aphex Systems Ltd. Model 230
POWER INDICATION
The Aphex logo above the power switch glows yellow during the
tube preamp’s warmup time and green when the unit is ready.
LOW NOISE MIC PRE
The 230 works with all professional microphones. The clean and
stable 48V phantom supply is suitable for even the most expen-
sive microphones. The 12dB/octave low cut filter starts at 70Hz
to effectively reduce wind blast without diminishing voice body.
Included is a selectable phase rotator following the principles of
the Spectral Phase Refractor (SPR) circuit used in our Type III Aural
Exciter and Model 661 Expressor. This helps to make spiky voices
more symmetrical while also adding clarity and body.
COMPRESSOR
The 230 includes a special version of Aphex’s patented Easyrider™
Compressor which has proven to be outstanding for voice work.
It is very simple to use with only two controls: Gain/Drive and
Release. To get deeper compression, turn up more Gain. To
manage the density and loudness, work with Release. Faster is
louder and denser. Slower is more natural and open.
LOGIC ASSISTED GATE™
Another Aphex patent, this noise gate is the most stable gate on
the market. It never hesitates or chatters. Once triggered, even
by a microscopic transient, it progresses fully through the attack,
hold, and release sequence. The attenuation depth and gating
threshold are user adjustable to allow for varying requirements.
The attack, hold, and release timing are internally set to function
optimally on voice waveforms.
1.0 Controls and Indicators with Quick Setup
DE-ESSER
This de-esser is unlike any other. It is more effective and flattering to
voice. Using a split-band technique with Linkwitz-Riley crossovers,
the voice remains bright and sharp, never losing presence while
de-essing. The de-ess threshold control lets you chose the essing
level that you want. Because of sophisticated technology, sibilance
is trapped for all voices. No frequency tuning is necessary.
EQUALIZATION BLOCK
Other voice processors give you several bands of parametric eq
that you must fuss with to find a suitable setting, usually not really
flattering to voice. Instead, the Model 320 gives you the popular
Aphex Big Bottom and Aural Exciter that are proven to not only
flatter voices but increase power, punch and intelligibility. As a real
plus, they are also very easy to adjust. A fully parametric equalizer
band is also provided to handle those annoying frequency anoma-
lies that some voices can contain, or for special effects.
REAR INSERT JACK
Allows you to insert any kind of line level audio equipment into
the signal path between the 230’s dynamics processing and the
equalizer section. The operating level at this jack is in the vicinity of
0dBu. You should set up your inserted outboard gear accordingly.
METER
Either peak output level (relevant to both analog and digital head-
room at 0dB = max before clip) or the compressor’s gain reduction
will be shown according to the position of the Meter switch. The
bar graph will move upwards indicating level, and downwards
indicating gain reduction.
POWER
SWITCH
Turns power
on and off.
GAIN/DRIVE
Adjusts
preamp gain
and drive into
the compres-
sor.
Lo Cut
Switches on
the 70Hz Low
Cut filter.
Invert
Polarity
When
pressed,
inverts the
relative polar-
ity (phase)
of the mic
input.
Phase Rota-
tor
Enables the
Spectral
Phase
Refractor
to improve
speech sym-
metry.
Compressor
Turns on the
Easyrider
compressor
circuit.
Meter
Indicates
peak output
level or gain
reduction of
the compres-
sor.
RELEASE
Controls the
density of
compres-
sion. Slow
for natural
leveling and
fast for more
loudness.
GATING
Shows when
the gate
is closed
or closing.
When the
light is off,
the gate is
fully open.
GATE THRESHOLD
When the sound is higher than this
level, the gate opens up instantly. No
“chattering” thanks to the patented
Logic Assisted Gate.
POWER INDICATOR
Logo glows yellow during power
on warmup. Preamp output is held
muted. Turns green after warmup
interval. Preamp becomes operational.
CLIP/MUTE
Flashes yellow when the
preamp is muted by the
cough switch. Flashes red
indicating clipping.
PAD
When pressed,
turns on the 20dB
input pad.
48V
When pressed,
turns on the
microphone phan-
tom 48V power