known Steve Mathews of Radio Garage Productions since radio commercials were
recorded on “carts.” You remember? Those little plastic cartridges with a continuous
loop of audiotape inside them?
the time, Steve was the production director of KIMM(AM)/KGGG(FM) in Rapid City,
S.D. Steve would spend his mornings typing his scripts and cart labels on his
typewriter. Later in the day, he would take the scripts and wedge them between
a very tall stack of carts and his chin. With a cigarette hanging out of his
mouth, Steve would then rush into the production studio before the whole cart
the studio, Steve would spend the next couple hours smoking cigarettes and
performing his own brand of radio production magic. These spots were good; no, great.
The whole radio station sounded better because
references to “carts,” “typewriters” and “cigarettes” inside radio studios, you’ve
by now realized that I have known Steve Mathews a long time. Today he is the
founder/owner/head audio mechanic at Radio Garage Productions in Des Moines,
Iowa, one of the top radio commercial production facilities in the country.
addition to writing and producing radio commercials, Radio Garage does audio
for online training, corporate communications, Flash, PowerPoint, etc.
Mathews and His Treasured Aphex Channel
years, I have been pestering Steve to try one of my favorite professional audio
products, the Aphex 230 Master Voice Channel. Over the years, I have used the
230 to make microphones and talent sound better. Finally one day, Steve caved
in to my pressure and bought one for Radio Garage.
Radio Garage, our voice talent ranges from experienced announcers to the first-timer,”
says Steve, adding, “We try to make everyone sound good no matter who they are
or what mic we use. The Aphex 230 has helped us make them sound better.”
Garage has been in the audio recording business for over 22 years, he said. “We
produce audio for clients all over this country. From just the right
compression to keep the screaming woman from clipping the audio, to adding that
just right richness, to de-essing that business owner’s little girl’s voice,
the Aphex really does what it says it will.”
Steve upgraded the Aphex 230 to the improved and rechristened Aphex Channel, so
I travelled to Radio Garage in Des Moines to give Steve’s mic chain a tune-up.
Channel has the same features as the Aphex 230, but with several improvements.
On the front panel, the Channel now has separate gain reduction and peak audio meters.
In the same display is a clock select-and-display feature.
Also there is a low-level input with a TRS
jack on the front. Along with a new name, the panel is redesigned to reflect
the product enhancements. “Sweet spot” guides for several controls are
silkscreened on their respective scales.
is the microphone preamp circuit utilizing a vacuum tube reflected plate amplifier
with Aphex’s Spectral Phase Refractor circuit. Sometimes called a phase
scrambler, this makes the voice signal more symmetrical and easier to process.
a vacuum tube in a modern audio product? “Today’s digital audio equipment is
sometimes ‘too perfect’ and can often sound cold and sterile,” Steve explains.
“Despite noise and other issues, the old vacuum tube gear — and even the audio
tape — added something pleasing to the sound.”
I agree that certain harmonics generated by a
vacuum tube amplifier are pleasing to the ear, giving warmth and detail to the
use the Channel to compress the dynamic range of the voice, giving it more
clarity and impact,” Steve says. “Some people have a problem with ‘plosives,’ such
as the letter ‘P.’ Pop filters can help, but we often need to back the talent
off the mic. The Aphex Channel’s EasyRider compressor stage then restores voice
power and presence. Problem solved.”
Master Preamp & Input Processor
+ Tube preamp with Spectral Phase Refractor
+ EasyRider compressor
+ Aural Exciter
+ Big Bottom bass enhancement
+ Other goodies
- Runs a little warm
- More expensive than most mic processors
Price: MSRP $1,299; street $999
For information, contact Michael Hurwitz at Aphex in California at (818) 767-2929 or visit www.aphex.com.
patented Wave Dependent Compressor automatically adjusts attack-and-release
times according to program complexity. A no-knee compression curve circuitry
automatically adjusts compression ratio based on program levels.
can also remove unwanted sibilance using the onboard de-esser threshold. Once
these are set, then the remaining processor stages included in the box: the company’s
“Big Bottom” bass enhancer, parametric EQ and the also famous Aural Exciter can
be added to taste, or not used at all.
use these controls to achieve a voice effect, improve a voice or match a microphone
to other audio,” he says. “The EQ is useful to increase ‘resonance’ in a voice.
The Aural Exciter can enhance clarity, presence and loudness in voices; like a
spice, sometimes a little bit is all that is needed.”
final stage on the Aphex Channel is the output control; some know it as “make-up
gain.” Compression and other processing can change the final output level, so
check this setting anytime you make a change in processing.
Aphex Channel provides many flavors of output signal types including balanced
(+4 dBu) and unbalanced (–10 dBV) analog outputs, and AES/EBU, S/PDIF and TOSlink
optical digital outputs. One more thing: Aphex recommends that to maintain the
best signal to noise performance, do not feed the Aphex into a microphone level
Entertainment Group, the parent company of Aphex is including Channel
technology in its new product offerings,
so as we say in our biz ... Stay Tuned!
Mario Hieb, P.E., is a broadcast
consulting engineer with more than 30 years of experience.