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                 iA231F / iA231FD User's Manual 

PHONIC CORPORATION

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page 7

PHONIC CORPORATION   

 iA231F / iA231FD User's Manual

Front Panel

1. LED Indicators

With  two  colors  and  8  segments;  the  LED  indicators 
visually  represent  the  output  level  of  the  equalizer. 
The clip button indicates when the input (or output, as 
designated by the I/O Meter button) signal is too high, 
and  is  dynamically  clipped  as  to  protect  the  internal 
circuitry.

2. Range Button

Selects maximum cut or boost for the equalizer of either 
6  dB  or  12  dB,  and  the  indicator  will  light  up  to  show 
you which level range you are using. The 12 dB settings 
should be used when much equalization is needed; the 
6dB setting allows for finer adjustments on the frequency 
levels.

3. EQ IN/OUT Switch

Push this button in to add the equalizer into the signal 
path,  push  again  to  raise  the  button  and  remove  the 
equalizer section from the signal path. This switch does 
not defeat the low or high cut filters.

4. Input Level Control

Turn this knob to adjust the input level from -

 dB to 

+15 dB.

5. I/O Meter Button

This  button  allows  users  to  alternate  the  use  of  the 
LED level meter between the input and output signals. 
When  pushed  in,  the  level  meter  will  give  users  a 
clear representation of the input signal, whereas when 
the  button  is  released,  the  output  signal  will  then  be 
analyzed instead.

6. Feedback Detection Button

Pushing  this  button  activates  the  built-in  feedback 
detection  system  of  he  iA  equalizer.  Frequencies  with 
the  potential  for  creating  feedback  are  indicated  by 
flashing LEDs on each frequency’s VR fader. 

7. Low Cut Control

This knob enables a subsonic filter range from 15 Hz to 
400 Hz. Its function is to "roll off" the response below a 
given frequency to eliminate subsonic interference like 
wind noise, stage rumble, and microphone "pop". This 
function, independent of EQ IN switch, is disabled when 
set to the OFF position. 

8. High Cut Control

This  knob  enables  a  super-to-ultra-sonic  filter  range 
from  2.5  kHz  to  25  kHz.  Its  function  is  to  "roll  off"  the 
response  above  the  selected  frequency  to  eliminate 
high  frequency  interference,  unwanted  noise  and  hiss 
that may be present at high frequencies. This function, 
independent of EQ IN switch, is disabled when set to the 
OFF position.

9. Limiter Control

This  control  is  used  to  select  the  threshold  of  the  iA 
equalizer's  built-in  limiter.  It  allows  users  to  adjust  the 
limiter from -20 to +10 dBu, or turn it off all together. 

10. Link Button

By  pushing  this  button,  any  settings  made  to  channel 
1 are applied to channel 2. This is helpful so that when 
stereo signals are sent through channels 1 and 2 of the 
iA  equalizer  it  is  not  necessary  to  set  both  channels' 
faders.

11. Faders

Smooth  operation  with  center  detent  and  accurate  flat 
setting,  these  faders  allow  users  to  boost  or  cut  their 
signal’s various frequencies by up to 12 dB. If the Range 
button is pushed in, the level of boost and cut is then 6 
dB.

CONTROLS AND SETTINGS

Summary of Contents for IA231F

Page 1: ...User s Manual ENGLISH iA231F iA231FD Dual Channel 31 Band Digital Graphic Equalizer with Feedback Detection...

Page 2: ...ring lighting storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power su...

Page 3: ...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 Equa...

Page 4: ...s why we have included this handy user s manual Read on dear friend and you shall find tips and hints and such the likes of which no other equalizer user s manual has ever offered And if that doesn t...

Page 5: ...turn the iA equalizer before the power amplifier and be sure to turn the equalizer off after turning off the amplifier 6 Always turn off the power before connecting or disconnecting the unit 7 Never u...

Page 6: ...e built in feedback detection system of he iA equalizer Frequencies with the potential for creating feedback are indicated by flashing LEDs on each frequency s VR fader 7 Low Cut Control This knob ena...

Page 7: ...iA231FD only By using this switch users can adjust the input of the iA equalizer between that of the Analog inputs and that of the Digital inputs This feature is available on the iA231FD only 17 AES I...

Page 8: ...ual channels typically two or three bands If your mixer has channel inserts you can patch your equalizer into a channel that is being used for something important and use it to tailor the sound of thi...

Page 9: ...PHONIC CORPORATION iA231F iA231FD User s Manual APPLICATION In The Speaker Path with Digital Recording use the iA EQ as a channel insert use the iA EQ with passive speakers use the iA EQ with active s...

Page 10: ...iA231F iA231FD User s Manual PHONIC CORPORATION page 10 FREQUENCY CHART...

Page 11: ...input level 16 dB Digital I O Type AES EBU XLR S PDIF RCA Format 24Bit 96 kHz Sample Rates 44 1 kHz 48 kHz 88 2 kHz 96 kHz System Frequency response 20 Hz to 20 kHz 1 dB THD 0 012 typ 4 dBu 1 kHz Cros...

Page 12: ...zer function I O meter switch meter display from input and output Range switch cut boost range from 6 dB to 15dB Limiter variable 20 dB to 20 dB OFF Sub out variable 20 Hz to 250 Hz Link switch on off...

Page 13: ...page 13 PHONIC CORPORATION iA231F iA231FD User s Manual DIMENSIONS measurements are shown in mm inches...

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