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10

QUAD EQ

Quad EQ

11

Owner’s Manual

Owner’

s Manual

You can also select a group of filters by holding one, 
then turning the KNOB to select a band of adjacent 
filters. Let go of the first one, then turn the KNOB to 
adjust the level of this group.

Setting a filter to 0 dB

Press and hold the EDIT [13] button and any  
FILTER SELECT button to return that filter to unity 
(0 dB).

Setting all filters to 0 dB

Press and hold the EDIT [13] button and the MAS-
TER SELECT [11] button to reset all the channel 
filters to unity (0 dB). 

11. MASTER SELECT button and LED 

Press this button to select the main output, then turn 

the KNOB [19] to adjust the main output level. The 
dB reading (±12) appears temporarily in the DISPLAY 
above the KNOB.

12. CHANNEL SELECT buttons A/B/C/D 

These backlit buttons allow you to select the channel 

to be adjusted.

There are options to link pairs in stereo, and to lock a 

channel as follows:

Stereo Linking

Pressing and holding A and B at the same time will 
link/unlink these channels in stereo. When linked, 
the pair take on channel A’s settings. 

Pressing and holding C and D at the same time will 
link/unlink these channels in stereo. When linked, 
the pair take on channel C’s settings.

If two channels are linked, then any changes to the 
filters will affect both channels equally.

If you use the NOISE function, then the noise will be 
present in both of the linked channels.

Locking a channel

Press and hold the EDIT [13] button and A, B, C or 
D to lock/unlock that channel. 

A channel is unlocked when the channel A-D buttons 
are lit solid, and it is locked when they are blinking.

When a channel is locked, its filters cannot be edited 
until it is unlocked using the same press-and-hold 
method.

Function Buttons 

The function buttons include RTA [17], MIC [18], 

NOISE [15], FILTER [16], and EDIT [13].

These buttons have two modes of operation:

1.  Pressing the RTA, MIC, and FILTER buttons 

toggles them on/off (the button lights when 
on). To activate the noise feature, press a chan-
nel button first (A, B, C or D), then NOISE.

2.  Pressing EDIT and then any of the four func-

tions allows deeper access to the settings of 
these functions. Details below…

13. EDIT button 

This button is your friend. It lets you access the extra 

features of the other function buttons. Press EDIT 
first, followed by a button such as RTA [17], MIC [18], 
NOISE [15], or FILTER [16]. What happens then is 
described in the sections below, under Noise Edit, RTA 
Edit, MIC Edit, and Filter Edit. (See back cover table.)

EDIT blinks when engaged, and while it is blinking 

you can jump around to any mode to make adjustments. 
For example, you can adust RTA, NOISE and FILTER all 
without quitting the EDIT mode.

To quit the EDIT mode, you can press EDIT again, or 

press the KNOB [19] in. (Its a knob and a button, wow!)

14. BYPASS button 

Press this button to bypass the currently-selected EQ 

channel. The incoming signals will pass through to the 
outputs of the Quad EQ, without being affected by any 
changes in EQ or other controls. The button will illumi-
nate when a channel is bypassed.

The channel will stay bypassed even when another 

channel is selected, and recalled when the channel is 
reselected. Press BYPASS again to leave Bypass mode.

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Summary of Contents for QUAD EQ

Page 1: ...OWNER S MANUAL 4 CHANNEL DIGITAL GRAPHIC EQUALIZER QUAD EQ...

Page 2: ...to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time The U S Government s Occupational Safety and Health Administrati...

Page 3: ......

Page 4: ...4 QUAD EQ Quad EQ...

Page 5: ......

Page 6: ...6 QUAD EQ Quad EQ Hookup Diagrams...

Page 7: ...7 Owner s Manual Owner s Manual FRONT OF HOUSE MAIN MIX EQ...

Page 8: ...8 QUAD EQ Quad EQ STUDIO TUNING...

Page 9: ...microphone will enter the Quad EQ for real time analysis and the other inputs are disconnected and will not play through the Quad EQ RearPanelInsandOuts channelsA D The IN and OUT jacks will pass thro...

Page 10: ...it an extremely unique live sound tool The EQ settings are displayed as a single red LED per ladder while the RTA green LEDs will actively display around the EQ setting 9 MASTERLEDLadder The right mo...

Page 11: ...when the channel A D buttons are lit solid and it is locked when they are blinking When a channel is locked its filters cannot be edited until it is unlocked using the same press and hold method Func...

Page 12: ...el is off and it needs to be edited to adjust the level of the noise see below Once it has been set to a suitable level and you follow the first step to turn on the noise it will turn on at the last l...

Page 13: ...t population and protect your tweeters at the same time With both of these filters you can still adjust the EQ levels of individual filters as desired To get a better idea of the effect of your filter...

Page 14: ...RTA button to auto reference level the RTA This will take an average of the analyzed signal and set the reference level automatically DCY RTAdecay This option provides 4 decay settings for the RTA you...

Page 15: ...ew SPL dB SPLweighting This option allows you to choose A B or C weighting for the SPL meter Use the KNOB to scroll through the 3 options Weighting is a curve of correction factors applied across the...

Page 16: ...16 QUAD EQ Quad EQ...

Page 17: ...gaged Check that MIC 18 is not engaged Try turning the Quad EQ off The connections be tween the input and output are then joined inter nally and this should allow your mixer and amps to still play If...

Page 18: ...uest Number and a detailed description of the problem including how we can duplicate it 6 Write the Service Request Number in BIG PRINT on top of the box Units sent without the SR number will be refus...

Page 19: ...s Manual Appendix B Connections XLR Connectors The Quad EQ inputs accept 3 pin male XLR connec tors These are wired as follows according to standards specified by the AES Audio Engineering Society 2...

Page 20: ...cal Info Analog Outputs Connectors XLR male TRS Max output level 22 dBu balanced 20 dBu unbalanced Impedance 150 ohms D A 24 bits 20 20 kHz 1 dB Dynamic Range 108 dB Crosstalk 115 dB 1 kHz Sample Rate...

Page 21: ...21 Owner s Manual Owner s Manual Block Diagram...

Page 22: ...e slope FILTER Operations high or low pass OPERATION Step 1 Step 2 Step 3 Engage RTA Press RTA Adjust RTA Level Press EDIT blinks Press RTA Rotate KNOB to adjust level Adjust RTA Decay settings Press...

Page 23: ...one of the LOUD Technologies factory authorized service centers and deemed eligible for repair or replacement under the terms of this warranty will be repaired or replaced within thirty days of recei...

Page 24: ...TO 0 dB hold EDIT 1 25k RESET ALL EQS TO 0 dB hold EDIT MSTR Noise ENGAGE RTA RTA ADJUST RTA LEVEL EDIT RTA CHOOSE DECAY EDIT RTA X 2 CHOOSE PRE OR POST EQ EDIT RTA X 3 TURN OFF EQ DISPLAY EDIT RTA X...

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