User's Manual
ENGLISH
iA231F/iA231FD
Dual Channel 31-Band Digital Graphic Equalizer with
Feedback Detection
1. Re ad the se ins tr uctions before operatin g th is
apparatus.
2. Keep these instructions for future reference.
3. Heed all warnings to ensure safe operation.
4. Follow all instructions provided in this document.
5. Do not use this apparatus near water or in locations
where condensation may occur.
6. Clean only with dry cloth. Do not use aerosol or liquid
cleaners. Unplug this apparatus before cleaning.
7. Do not block any of the ventilation openings. Install
in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including
ampliers) that produce heat.
9. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade or the third prong is provided for your safety. If
the provided plug does not t into your outlet, consult
an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or
pinched particularly at plug, convenience receptacles,
and the point where they exit from the apparatus.
11. Only use attachments/accessories specied by the
manufacturer.
12. Use only with a ca rt, stan d, tr ipod, br acket, or
table specied by the manufacturer, or sold with
the apparatus. When a cart is used, use caution
wh en moving the c ar t/ ap paratus
combination to avoid injury from tipover.
13. Unplug this apparatus during lighting
st or ms or wh en unu se d fo r lo ng
periods of time.
14. Refer all servicing to qualied service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate
normally, or has been dropped.
IMPORTANT SAFETY INSTRUCTIONS
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
!
The lightning ash with arrowhead symbol, within an equi-
lateral triangle, is intended to alert the user to the presence
of uninsulated “dangerous voltage” within the product’s
enclosure that may be of sufcient
magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is in-
tended to alert the user to the presence of important operat-
ing and maintenance (servicing) instructions in the literature
accompanying the appliance.
WARNING: To reduce the risk of re or electric shock, do
not expose this apparatus to rain or moisture.
CAUTION: Use of controls or adjustments or performance
of procedures other than those specied may result in
hazardous radiation exposure.
!
The apparatus shall not be exposed to dripping or splashing and that no objects lled with liquids, such as vases,
shall be placed on the apparatus. The MAINS plug is used as the disconnect device, the disconnect device shall
remain readily operable.
Warning: the user shall not place this apparatus in the conned area during the operation so that the mains switch
can be easily accessible.
TAB LE OF CO NTE NTS
page
31-BAND DUAL CHANNEL EQUALIZER
iA231F / iA231FD
Phonic reserves the right to improve or alter any information supplied within this document without prior notice.
V1.0 NOV 19,
Introduction .....................................................................................................4
Features............................................................................................................4
Getting Started ................................................................................................5
Basic Setup......................................................................................................5
Controls and Settings .....................................................................................6
Front Panel........................................................................................................... 6
Back Panel ........................................................................................................... 7
Operation .........................................................................................................8
Feedback Control ................................................................................................ 8
Channel Equalization .......................................................................................... 8
Large Room Equalization ................................................................................... 8
Quick Tips ............................................................................................................ 8
Application.......................................................................................................9
Frequency Chart ............................................................................................ 10
Specications ................................................................................................ 11
Dimensions .................................................................................................... 13
WITH DIGITAL FEEDBACK DETECTION
iA231F / iA231FD User's Manual PHONIC CORPORATION
page 4
page 5
PHONIC CORPORATION iA231F / iA231FD User's Manual
INTRODUCTION
We at Phonic would like to congratulate you on making
the wise choice in investing in an all new iA231F or
iA231FD graphic equalizer, analog in appearance, but
purely digital on the inside.
The iA231F and 231FD are dual channel, 1/3 octave 31band graphic equalizers with 6 or 12 dB of boost or cut
to ISO standard frequencies between 25 Hz and 10 kHz,
giving you, the user, ultimate control over your audio
quality in most any situation.
Featuring feedback elimination, a handy take-it-orleave-it delay control, as well as a nifty high pass lter,
allowing for those troublesome and mind-numbingly
pointless low-frequency sounds to be removed without a
hassle, the iA series takes care of various needs that any
regularly equalizer would no doubt forget.
Provided your iA equalizer is used correctly, it should
provide you with many years of valuable use; which is
why we have included this handy user's manual. Read
on, dear friend, and you shall nd tips and hints and
such, the likes of which no other equalizer user's manual
has ever offered. And if that doesn't sell you on reading
through this manual, perhaps you could do it anyway,
storing it afterwards in a place you can remember and
nd later, if need be.
FEATURES
l
Professional DUAL 31-band, 1/3 octave stereo
Graphic Equalizer
l
30mm VR for precise adjustment
l
Feedback Detection System instantly reveals critical
frequencies and can also be used as Audio Analyzer
l
Built-in limiter control form -20 dB to +20 dB (OFF)
l
Variable low-cut lter, 15 to 400 Hz (off), and high-cut
lter, 2.5 to 30 kHz (off)
l
Switchable boost/cut range between 6 dB and 12 dB
l
EQ IN/OUT switch
l
I/O level meter switch
l
Dedicated mono subwoofer output with adjustable
crossover frequency
l
+15dB to -∞ input gain range for easy level matching
l
Stereo link function
l
8-segment LED meter with clip warning for input
l
Illuminated fader
l
Servo-balanced outputs with 1/4” TRS and XLR
connectors
l
Digital AES/EBU XLR and S/PDIF RCA connectors
(iA231FD only)
page 5
PHONIC CORPORATION iA231F / iA231FD User's Manual
GETTING STARTED
The following are a few helpful hints Phonic would like
you to keep in mind while using or preparing to use your
iA equalizer. You can follow at your own discretion,
however it should be noted that heeding these notices
can help to ensure a greater quality of sound, protect
you against damaging your equalizer, and help to ensure
you just have an all round pleasant experience with the
product.
1. Check the AC voltage before connecting the plug.
This product is equipped with a 3-wire grounding
type plug; this is a safety feature and should not be
defeated. Proper grounding must be practiced to
prevent electrical shock to the operator. Choose the
main supply for the sound system with care, and do
not share sockets or earthing with light dimmers.
2. Run audio cables separately from dimmer wiring,
using balanced lines wherever possible. If necessary,
cross audio and lighting cables at right angles as
to minimize the possibility of interference. Keep
unbalanced cabling as short as possible.
3. Check your cables regularly and label each end for
easy identication.
4. Before switching on the main power, keep all the
output rotary faders all the way down to prevent
damage or excessive noise caused by bad level
adjustment, wrong wiring, defective cables, or bad
connections.
5. Always turn the iA equalizer before the power
amplier, and be sure to turn the equalizer off after
turning off the amplier.
6. Always turn off the power before connecting or
disconnecting the unit.
7. Never use solvents to clean the unit. Clean with a
soft, dry cloth.
BASIC SETUP
Connecting your iA EQ to your audio system could not
really be easier, though there are a few ways you can go
about it. The following is the preferred order of set up,
though you may detour slightly from this, if need be.
1. Feed the output of your mixer into the XLR or 1/4"
analog inputs. If using the iA231FD, you may prefer
to use a digital signal, in which case you should
connect your S/PDIF output to the iA’s RCA S/PDIF
input, or XLR AES input and adjust the input select
switch accordingly.
2. Connect either active speakers or the input of an
amplier to the XLR or 1/4" analog outputs of the iA
equalizer. Once again, if you are using the iA231FD,
you may also like to use the S/PDIF output to feed to
a digital recorder or other product that accepts digital
signals.
3. If you would like to use one of the Sub outputs of the
iA equalizer, you’re more than welcome to. Simply
plug the active subwoofer’s input or amplier’s input
to the XLR sub output jacks. Adjust the included low
pass lter to a level of your liking.
4. Plug the provided AC power cable into the power
connector of the iA equalizer and appropriate AC
power source. Check local voltages if traveling
abroad, just in case.
5. Turn on your mixer and equalizer, followed by the
rest of your equipment, and do what you do.
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