3 Operation
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3.1 Front panel
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The front panel consists of a display, 5 buttons, and a mic connector. When performing any automatic functions, the mic is required (more on that later.)
The 5 buttons are used for navigating the menus. If you will note, 4 of the buttons are arrow shaped and indicate the direction you want to go,
the 5th generally terminates the function but changes it's action in some cases.
When you first power on the EQ, it will display a logo, and perform some self tests. This takes about 1 second, then you will see the "Main Menu."
Refer to the menu tree (section 3.2) for quick navigation.
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3.2 Menus
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To select a function, use the UP and DOWN arrows to select a menu function you want, then press the RIGHT button to execute the function.
The menus are arranged in levels. The top level (level 1) is the "Main Menu."
There are four general catigorys of operation.
These include:
Presets,
Tone Control,
Installation and Setup,
Misc
After some amount of time (the default is two minutes and is adjustable,) the EQ will go into screen saver mode.
When this happens, pressing any button will return to menu mode and should always show the top lelvel menu.
Shown below is the menu tree in it's entirety:
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For the remainder of this document, menu functions will be shown as below.
For example, when describing the function to set the active channels, you will see a picture like this:
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From the top level (Main Menu,) press UP or DOWN until "Installation and Setup" is displayed then press RIGHT.
Press UP or DOWN until "Channel Control" is diplayed then press RIGHT.
Press UP or DOWN until "Select Active Channels" is diplayed then press RIGHT.
Normally, when you are finished with the function, you press CENTER to return to the menu.
In this example, you will be returned to the "Select Active Channels" menu option. To return to the Main Menu, press LEFT twice.
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3.3 Getting Started
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Assuming this is the first time you are using the EQ-701, you will need to set up the input sensitivity and select the active channels.
Lets setup the input sensitivity first.
Input sensitivity refers to the level of signal the power amp requires to get full volume. Different manufacturers have different requirements.
Please make every effort to find out the power amplifier's sensitivity. If you are unsure, use the highest setting which allows for an adequate noise floor.
The purpose of setting this is to make it possible to get the maximum output power from the amplifier, while maintaining the maximum signal to noise ratio.
Improper setting of this parameter will either raise the noise floor, or reduce the maximum output power available.
If maximum output is not a factor in this system, you can reduce the residual noise by using a lower setting.
The equalizer's input sensitivity will always be 1.0Vrms either balanced or unbalanced.
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Except for the Center and woofer channels (woofer is not settable,) sensitivitys are adjusted in pairs (Left and Right Front, Left and Right Surround, etc...)
To select which pair you want to change, press either RIGHT or LEFT . To change the value, press either UP or DOWN. When finished, press CENTER.
The available settings are:
| Setting |
Unbalanced |
Balanced |
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| -3db |
0.707Vrms |
.414Vrms |
| 0db |
1.0Vrms |
2.0Vrms |
| +3db |
1.414Vrms |
2.83Vrms |
| +6db |
2.0Vrms |
4.0Vrms |
Use the same procedure to select the active channels:
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Active channels are used to shorten the time required for performing automatic functions.
The EQ will always process audio through all 8 channels, but if some channels are unused,
setting those to "Inactive" will cause the EQ to skip them when perfomeing automatic functions.
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3.4 Automatic Functions
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The EQ-701 outputs a test signal, and listens for the response from the room. It then sets several parameters depending on the function you select.
In order for this to work, you will need to connect the microphone to the EQ.
Unwrap the cord, and begin by placeing the mic on the back of your favorate sitting position pointing up. See drawing below.
Plug the connector into the jack in the front of the EQ-701.
The first position is used to set the delays, so it should be in the most central location. A compermise of the listening positions.
Two of the functions under Automatic Adjustments will allow you to select either all channels (except for thise set to inactive,)
or a single channel (recardless if it has been set to inactive or not.)
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3.4.1 Auto adjust Everything
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will perform all the functions described below.
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3.4.2 Auto adjust EQ
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You will be asked if you want to set all (active,) or one channel.
You are then asked to place the microphone in the first listening position (see "placing the mic" in section nn.)
If you selected all channels, or, if you selected the woofer, it will remind you to set the controls in the woofer (see "seetting woofer controls" in section nn.)
It will ask you to place the microphone in the room.
When ready, press CENTER and a short countdown will begin allowing you time to leave the room. This time is adjustable.
The EQ will then output a test signal or two and cycle through the selected channels.
When finished, (only a few seconds,) it will ask for you to move the mic, and it will repeat the tests.
After the 5th test (5 mic positions are used,) it will set the EQ and return to the menu.
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3.4.3 Auto adjust Channel Balance
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This menu option relys on previous automatic EQ test. It outputs no signals and requires no inputs from you.
It does, however, set the relitave output levels so each of the active channels should be the same volume.
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3.4.4 Auto adjust Crossover
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Again, this menu option relys on previous automatic EQ test. It outputs no signals and requires no inputs from you.
It does, however, set the crossover point between the woofer and other channels.
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3.4.5 Auto adjust Delays
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When selected, the EQ will output a very short signal and measure the time it takes for the signal to reach the microphone.
The mic should be placed in the most central location between the listening positions.
After knowing the time delay for each speaker to reach the mic, the EQ will 'normalize' the numbers by finding the shortest time (closest speaker)
and subtract that amount from all channels. For example, say you are checking the delay on only 2 channels (L and R) also, say the L is 10 feet
from the mic and the R is 15 feet. The EQ will measure 5.88Ms for the L chan and 8.88Ms for the R. It will subtract 5.88 (being the smalest number of the measurements,)
from all channels yealding zero for the L and 8.88-5.88 (or-3Ms) for the R.
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3.5 Manual EQ Functions
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The EQ-701 is carefully designed to make everything that the EQ handles automatic.
Each of the measurements described above is handled automaticly and a lot of time and design effort was put in to assureing the best possabile performance.
In rare cases, when you want make some changes, manual controls are included to allow you to change any of the parameters the EQ handls.
The procedure for each is described below.
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3.5.1 Manual adjust EQ
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When Selected, you will be asked which channel you would like to adjust.
Then the current EQ settings for that channel are displayed and the functions for the buttons change to handle changing the EQ.
Use LEFT and RIGHT to change the active band,
UP and DOWN allow you to change the level for that band.
When you are finished, press CENTER, and the current settings will be saved.
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3.5.2 Manual adjust Channel Balance
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This function allows you to change the RELITIVE output levels of all 8 channels.
The display shows the attenuation from full output (or 0db.) A larger number means less output.
To optomize the signal to noise ratio, at least one channel is always zero db.
When trying to increase the output beyond 0db, the EQ will reduce all the other channels instead.
To select a channel, press either LEFT or RIGHT.
To change the level, press either UP or DOWN.
When finished, press CENTER.
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3.5.3 Manual adjust Crossover
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You can change the subwoofer crossover point here.
Press either UP or DOWN to change the crossover frequency.
Press CENTER when finished.
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3.5.4 Manual adjust Delays
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This function allows you to change the ABSOLUTE delays of the 8 channels.
Unlike the automatic delay function, the absolute measurement is saved for your convienyence.
The numbers you see should represent the actual distance (plus or minus 4.5 inches.)
To select a channel, press either LEFT or RIGHT.
To change the delay, press either UP or DOWN.
When finished, press CENTER.
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3.6 Channel Control Menu
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3.6.1 Select Active Channels
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Active channels are used to shorten the time required for performing automatic functions.
The EQ will always process audio through all 8 channels, but if some channels are unused,
setting those to "Inactive" will cause the EQ to skip them when perfomeing automatic functions.
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3.6.2 Select Internal or External Crossover
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The EQ701 has the ability to handle the woofer crossover for you.
This is prefered to using external crossovers.
However, if you don't have control over the external crossover, you can disable the crossover here.
This is a "toggle" meaning, there is no submenu and the value simply changes to the other setting when selected.
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3.6.3 Poweramp Sensitivity
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Input sensitivity refers to the level of signal the power amp requires to get full volume. Different manufacturers have different requirements.
Please make every effort to find out the power amplifier's sensitivity. If you are unsure, use the highest setting which allows for an adequate noise floor.
The purpose of setting this is to make it possible to get the maximum output power from the amplifier, while maintaining the maximum signal to noise ratio.
Improper setting of this parameter will either raise the noise floor, or reduce the maximum output power available.
If maximum output is not a factor in this system, you can reduce the residual noise by using a lower setting.
The equalizer's input sensitivity will always be 1.0Vrms either balanced or unbalanced.
Except for the Center and woofer channels (woofer is not settable,) sensitivitys are adjusted in pairs (Left and Right Front, Left and Right Surround, etc...)
To select which pair you want to change, press either RIGHT or LEFT . To change the value, press either UP or DOWN. When finished, press CENTER.
The available settings are:
| Setting |
Unbalanced |
Balanced |
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| -3db |
0.707Vrms |
.414Vrms |
| 0db |
1.0Vrms |
2.0Vrms |
| +3db |
1.414Vrms |
2.83Vrms |
| +6db |
2.0Vrms |
4.0Vrms |
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3.7 Miscellaneous
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Many of the functions under this menu heading are rather self explanitory.
but one or 2 could use a little amplification.
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3.7.1 Pink Noise Demo
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This function demonstrates the difference between straight through, and EQ'd
When entered, you will be asked if you want to cycle through the channels
manually, or automaticly. Once that choice has been made, the unit will output
pink nois on a channel. You then celect if you want the noise EQ's or not.
Pressing CENTER will terminate the test.
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3.7.2 Temporarally Bypass EQ
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This function will bupass the equalizer.
When you press CENTER, it will revert back to normal EQ'd mode.
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3.7.3 Clear Room Time
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When performing an automatic EQ, it is prefered you are not in the room.
The anount of time the system gives you is variable and defaults to 10 seconds.
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3.7.4 Adjust Display Brightness
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This function s self explainary.
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3.7.5 Screen Saver
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After some amount of time of inactivity the display will enter a screen saver mode.
The amount of time is adjustable here.
Pressing any button will return the display to the top menu.
The screen saver more is only entered if the EQ is waiting for you to choose a menu function.
If you are already in a subfunction, then the screen saver more is disabled untill you complete the function.
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3.7.6 Show Diagnostice
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This allows you to toggle between showing extra diagnostics during the automatic functions.
While showing these extra numbers, sometimes it will wait for you to press CENTER to continue.
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3.7.7 Show Software Versions
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The EQ701 has 2 Digital Signal Processors inside.
When calling for technical support, the technition may ask you for this information.
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3.7.8 Clear Flash Memory
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Any settings changed by either automatic functions, or manual functions, or user presets are stored in a non volatile flash memory.
This is so when the EQ is power cycled, it can return to the last state it was in.
Clearing the Flash Memory will restore the factory default settings for all things and remove any presets you have stored.
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