Mackie LP48 User's Manual

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Contents

1.1 Introduction.................................................................3

Insert EQ Features ......................................................3

Lake Loudspeaker Processor Features ....................3

Getting Started ............................................................4

Installing the Card .......................................................4

Updating the Software ................................................4

Opening the LP48 Setup Screen ................................4

2. Modes of Operation .....................................................6

Overview ......................................................................7

LP48 Card Outputs ......................................................7

3. Lake EQ Mode (10 Insert Equalizers) .......................8

Source Assign ..............................................................8

Low-shelf EQ .............................................................11

Parametric EQ ...........................................................11

High-shelf EQ .............................................................12

Parametric EQ ...........................................................13

Mesa EQ .....................................................................14

Button Bar ..................................................................15

Home ...........................................................................15

Overlay Functions .....................................................15

Overlay GEQ ..............................................................15

Overlay PEQ ..............................................................16

EQ Preferences ..........................................................16

4. Lake Loudspeaker Processor Mode (4x8) .............18

Source Assign ............................................................18

4.1 Home ..........................................................................20

4.2 System Store/Recall..................................................21

4.3 Modules ......................................................................23

Default Modules ........................................................28

Two Auxiliary Outputs ..............................................30

XOVER Tab ................................................................32

Levels Tab ..................................................................39

4.4 Groups .........................................................................44

Gang ............................................................................49

4.5 Solo/Mute ....................................................................50

4.6 User Preferences .......................................................51

4.7 Icon Control ...............................................................53

5. Introduction to Designer Mode ...............................54

6. Functional Reference Guide ....................................63

Need help with your new LP48 Card?

• Visit www.mackie.com and click Support to ﬁ nd: FAQs, manuals, addendums, and other useful information.

• Email us at: techmail@mackie.com.

• Telephone 1-800-898-3211 to speak with one of our splendid technical support chaps, (Monday through Friday, from 7 a.m. to 5 p.m. PST).

1. Introduction

Thank you for choosing to upgrade your TT24 Digital Live Mixing Console with the LP48 Lake Processor expansion card. Dolby Laboratories designed the highly regarded Lake Contour™ Digital Loudspeaker processor, and worked with us here at Mackie to develop the ﬁ rst integrated Lake EQ and Lake Loudspeaker modules for a digital console.

The TT24 with an LP48 expansion card provides 10 channels of Lake Insert EQ processing, or eight channels of Lake Loudspeaker processing, or a combination of the two (ﬁ ve channels of EQ processing and four channels of Lake Loudspeaker processing).

The inputs to the LP48 are assigned in the TT Control software application running on your PC from virtually any point in the TT24 signal path. The loudspeaker processor outputs from the LP48 card can be routed to any physical output connector on the console or the DS3232 Digital Snake.

LP48 conﬁ guration is done within the TT Control software Setup>Expansion menu.

Insert EQ Features

The Lake EQ Mode provides ten EQ processors that can be inserted into any of the TT24 digital insert points. Each EQ processor can operate with the Lake Ideal Graphic EQ (28-bands) or the Lake Mesa EQ (parametric EQ).

Unlike standard graphic equalizers whose adjacent ﬁ lters interact and add to each other, the Lake Ideal Graphic EQ provides a frequency response curve exactly like the curve of the user interface sliders. This allows you to have more precise control over your sound. What you see is what you get!

Lake Loudspeaker Processor Features

The Lake Loudspeaker Processor Mode provides a four input by eight output speaker processor (two input by four output when in split mode). It has two DSP engines that split up the work between them.

In split mode, you can conﬁ gure the processor as follows:

• Two two-way crossovers

• One three-way crossover

• One four-way crossover

• Two Aux mode

When the whole card is conﬁ gured in Lake Loudspeaker Processor mode, you can conﬁ gure the processors as follows:

• Four two-way crossovers

• One four-way crossover and one three-way

• One four-way crossover and two two-way

• Two four-way crossovers

• Two three-way crossovers

• Two Aux mode

You can select from the following crossover types for each individual crossover ﬁ lter, using ﬁ lter orders from 6 dB/octave up to 48 dB/octave:

2 Aux mode

2-way Xover

3-way Xover

3-way

Xover

4-way Xover

• Bessel

• Butterworth

• Linkwitz-Riley

Important default presets allow you to set up and change between the various crossover types. Presets for EAW and Mackie loudspeakers are also provided.

Getting Started

Installing the Card

The ﬁ rst thing to do is to install the LP48 expansion card into your TT24. See the “TT24 Expansion Card Installation Instructions” that came with your LP48 for instructions on how to install the expansion card.

Updating the Software

The next thing is to make sure you have the latest ﬁ rmware for the TT24 and the latest TT Control software application for your PC. Version 1.7 or greater is required to run the LP48 card.

If you don't know the software version you are currently using, you can check your software ver sion and build number by pressing the “HELP” button on the console, application.

You can ﬁ nd the latest version of the TT24 ﬁ rmware and TT Control PC application on the Mackie website: http://www.mackie.com/products/tt24/software.html

Be sure to follow the instructions when upgrading to new software, as described in the TT24 Firmware/Software Installation guide found in the link.

It is VERY IMPORTANT that you always update the ﬁ rmware in the following order:

1. DS3232 Digital Snake (if present)

or by clicking Menu > About in the TT Control PC

2. Expansion Cards (if present)

3. The TT24 Console.

Opening the LP48 Setup Screen

Now you have installed the LP48 expansion card and updated the ﬁ rmware and software, you are ready to turn on the TT24 and start conﬁ guring the LP48 Lake Processor Card.

To conﬁ rm that the LP48 card is installed and properly recognized:

1. Press the SETUP button in the QuickMix area.

2. Touch the EXPANSION button in the MENU SELECTION window.

SETUP

SNAPSHOTS

SETUP

CTRL

COPY

RECALL

STORE

HELP

UTIL

PAS TE

3. The EXPANSION window displays the cards installed in the two expansion slots on the TT24. That’s as far as you can go on the TT24 Touchscreen. All the conﬁgurations for the LP48 are done through the TT Control PC application.

4. Connect a USB cable between the TT24 and your computer.

5. Open the TT Control PC application on your computer.

6. If the Expansion window isn’t open yet, press F11 on the keyboard to open the Expansion window.

7. Click the EDIT button at the bottom of the expansion slot window.

EDIT

8. This is your window into the amazing world of Lake processing, where you can access all the tools provided by this powerful software and expansion card.

Snapshots Warning

The LP48 card has its own Snapshot Backup and Snapshot Restore items available in the Menu>Expansion Card Options drop-down menu of the TT Control software.

Make sure that you backup your LP48 Card Snapshots when you backup your console, or the LP48 will not be backed up.

NOTE: The LP48 snapshot backup and snapshot recall process can take a long time, such as 30 minutes or so!!!

2. Modes of Operation

Overview

There are three Card Modes from which to choose in the Lake Card Edit window: 10 Insert Equalizers, 4x8 Speaker Processor, and 2x4 Speaker Processor with 5 Insert EQs. Select the mode of operation you want to use from the window shown below. If you make a change, you will be prompted to conﬁ rm your choice:

10 Insert Equalizers

4x8 Speaker Processor

2x4 Speaker Processor with 5 Insert EQs

10 INSERT EQUALIZERS Lake EQ Mode

When this mode of operation is selected, the LP48 supplies up to ten 1/3-octave graphic equalizers or parametric equalizers, each of which can be inserted into the pre- or post-inserts for each channel (Analog 1-24 pre or post, Digital 25-48 pre or post, card return 1-8 pre or post), the insert for an aux send (Aux Send 1-12), or the insert for the Main Left, Right, or Mono output.

The Lake Ideal Graphic EQ™ provides tighter ﬁ lter control over traditional analog (and digital) graphic EQs. It features “raised cosine” algorithms that provide a frequency response that truly matches the curve established on the graphic interface.

If one were to the boost a conventional graphic equalizer by 6 dB at 500, 750, 1000, 1250, 1600, and 2000 Hz, the resulting frequency response would resemble the wavy curve in the top trace of the illustration below. The bottom trace shows that the same adjacent ﬁ lters in the Lake Ideal Graphic EQ sum to a ﬂ at frequency response, providing a response curve just like the one you expect when you adjust the Graphic EQ sliders.

The Lake Mesa EQ™ offers the classic shelving and parametric ﬁ lters of traditional parametric EQs. But it goes one step further by providing asymmetric ﬁ ltering for independent control over upward and downward slopes of a parametric ﬁ lter section. This is particularly useful when performing corrective adjustments to the asymmetric response patterns of all loudspeakers.

4x8 SPEAKER PROCESSOR Lake Loudspeaker Processor Mode (4x8)

When this mode is selected, the LP48 provides four 1x2 crossover modules, each accepting an input from an aux send (Aux Send 1-12), Matrix Out (Matrix A-H), or the Main Left, Right, or Mono output. can also be conﬁ gured as 1x3 (3-way) or 1x4 (4-way) crossovers, or a 1-input, 2-aux preset can be chosen.

Each input and output has a delay function for time alignment of delay stacks and drivers. In addition, each output has a limiter function to provide protection for each driver. An extensive library of presets are provided, tailored for many popular loudspeaker systems, including EAW and Mackie loudspeaker products.

The crossover modules

2x4 SPEAKER PROCESSOR with 5 INSERT EQs Split Mode (2x4 Lake Loudspeaker Processor with 5 Lake Insert EQs)

This mode provides a combination of the ﬁ rst two modes: two 1x2 crossover modules and ﬁ ve insert EQ modules. The features remain the same for each type, only the number of modules has been reduced by half for each type.

Refer to this manual’s sections regarding Lake EQ Mode and Lake Loudspeaker Processor Mode for an explanation of each of the modes contained within Split Mode.

LP48 Card Outputs

For Inserts EQs, the processed output from the card is routed to the insert point. For Loudspeaker Processor outputs, the output from the LP48 card (either 8, or 4 in split mode) can be routed using the TT Control Routing Output screen of software version 1.7 or greater.

3. Lake EQ Mode (10 Insert Equalizers)

When this mode is selected, you can choose between a 28-band graphic EQ (Lake Ideal Graphic EQ) or a fullfeatured parametric EQ (Lake Mesa EQ) for each insert.

Source Assign

You must assign a source for each insert EQ. You can select from any analog input (1-24 pre/post), digital input (25-48 pre/post), card channel (1-8 pre/post), aux send (1-12 post), or the main left, right, or mono outputs (post). Since these are insert points, the processed signal is returned to the signal path at the selected insert point.

Edit

Click the EDIT button to open the EQ Edit window. This is where you select either the graphic EQ or parametric EQ, and conﬁ gure the various parameters of the equalizer.

EDIT

NOTE: After clicking EDIT, there may be a warning that the graphics need to be 16 bit. Usually it is OK to ignore this warning, but if you have any trouble then adjust your computer display to suit.

The parametric EQ is the default selection when you enter the EQ Edit window. The EQ Edit window consists of a graph, with the x-axis (horizontal) representing frequency, and the y-axis (vertical) representing amplitude. The icons at the top of the graph represent a low-shelf EQ, parametric EQ, Mesa EQ, and high-shelf EQ. The the bottom of the graph provide access to other EQ options.

To conﬁ gure the parametric EQ, simply click one of the blue icons at the top of the graph and move it to the approximate point in the graph where you want it to be, then click again to place it.

buttons at

EQ Edit Window

Frequency Lock

This button, located in the upper left corner of the graph, locks the frequency of the selected ﬁ lter so it cannot be changed by clicking within the graph area. You will have to click below the graph. mode as well, since you can adjust the cut or boost without accidentally moving to the next ﬁ lter along.

This is useful in graphic EQ

Button Menus used in Insert EQ mode

The LP48 uses a row of buttons along the bottom to choose and navigate within menu items.

This map shows the general layout of the button menus and their submenus for the Insert EQ mode. For example, clicking on the Home button takes you to the top level. Clicking on Overlay Functions takes you to another world of enchantment where you can select from graphic EQ or Parametric EQ, select EQ display preferences, or copy and paste an EQ overlay.

Selectable buttons are blue. Buttons that lead to sub-menus turn orange when selected. Non-selectable buttons are grey (for example Filter Delete is not selectable for the graphic EQ).

Home

Overlay Functions

Overlay GEQ/Overlay PEQ

EQ Preferences

No Scale

Reset Scale

Zoom In

Zoom Out

Down

Overlay Copy

Overlay Paste

Overlay Bypass

Overlay Flat

Filter Bypass

Filter Flat

Filter Delete

Filter Edit

Parametric EQ

Click on Overlay Functions and select the Overlay PEQ button (if it is not already in that mode). The operations that follow can be made no matter which row of buttons is displayed, even Home, but you need to

get into the Overlay Functions menu to change from GEQ to PEQ.)

Low-shelf EQ

Click the low-shelf EQ icon at the top of the work area (it glows orange) and move it to the area of 0 dB, 100 Hz on the graph, then click again to place it.

The icon appears at the bottom of the graph and the parameters appear at the top of the graph (frequency, Q, and amplitude).

Click the blue icon at the bottom of the graph and move it left or right to adjust the cutoff frequency of the ﬁ lter.

Click the vertical bar at the right tip of the icon and move it left or right to adjust the slope (Q) of the ﬁ lter.

Click the horizontal bar (0 dB) in the graph and move it up or down to adjust the amplitude of the ﬁ lter.

High-shelf EQ

Click the high-shelf EQ icon (it glows orange) and move it to the area of 0 dB, 10 kHz on the graph, then click again to place it.

The icon appears at the bottom of the graph and the parameters appear at the top of the graph (frequency, Q, and amplitude).

Notice that the low-shelf EQ icon disappears from the bottom of the graph, and an “X” appears in the graph. This indicates that there is a ﬁ lter located at that frequency. Simply click on or below the “X” to select it or click on the blue box above the X, and readjust the parameters if desired.

Click in the blue icon at the bottom of the graph and move it left or right to adjust the cutoff frequency of the ﬁ lter.

Click on the vertical bar at the left tip of the icon and move it left or right to adjust the slope (Q) of the ﬁ lter.

Click on the horizontal bar (0 dB) in the graph and move it up or down to adjust the amplitude of the ﬁ lter.

Parametric EQ

Click the parametric EQ icon (it glows orange) and drag it to the area of 1 kHz on the graph, then click again to place it.

The icon appears at the bottom of the graph and the parameters appear at the top of the graph (frequency, Q, and amplitude).

Notice that the high-shelf EQ icon disappears from the bottom of the graph, and an “X” appears in the graph. This indicates that there is a ﬁ lter located at that frequency. Simply click on the “X” to select it and readjust the parameters, if desired.

Click inside the blue icon at the bottom of the graph and move it left or right to adjust the center frequency of the ﬁ lter.

Click to the left or right of the vertical bar at either tip of the icon and move it left or right to adjust the slope (Q) of the ﬁ lter. Note this adjusts the slope at both ends of the ﬁ lter symmetrically.

Click on the horizontal bar (0 dB) in the graph and move it

up or down to adjust the amplitude of the ﬁ lter.

Mesa EQ

The Mesa EQ is similar to the parametric EQ, except that the bandwidth of the ﬁ lter and the slope at both sides of the ﬁ lter envelope can be adjusted independently. This allows you to tailor the ﬁ lter for complex frequency response corrections required for certain loudspeaker/room combinations.

The icon appears at the bottom of the graph and the parameters appear at the top of the graph (frequency, Q, and amplitude of each end of the ﬁ lter envelope).

Click inside the blue icon at the bottom of the graph and move it left or right to adjust the center frequency of the ﬁ lter.

Click and move inside either tapered end of the blue icon to increase or decrease the bandwidth.

Click to the left of the left tip of the icon and move it left or right to adjust the slope (Q) of the low end of the ﬁ lter.

Click to the right of the right tip of the icon and move it left or right to adjust the slope (Q) of the high end of the ﬁ lter.

Click on the horizontal bar (0 dB) in the graph and move it up or down to adjust the amplitude of the ﬁ lter.

Button Bar

The buttons at the bottom of the EQ Edit window provide access to EQ options.

Home

Click this button to quickly return to the default EQ Edit screen.

Overlay Functions

Click this button and the other buttons will change function. These options allow you to change to the 28-band Graphic EQ, to change EQ preferences, and to copy/paste EQ settings.

Overlay GEQ

Click this button to switch to a graphic EQ instead of a parametric EQ. A warning message asks you to conﬁ rm that you want to change to the graphic EQ overlay and lose the current EQ settings. Click “Yes” to switch to the graphic EQ overlay.

Note: You cannot “undo” this action.

Each yellow “X” on the horizontal line (0 dB) represents a ﬁ lter. You can click on an “X” to select it, or click and drag across the bottom horizontal bar to access each individual graphic EQ ﬁ lter.

Click on each “X” and drag up or down to adjust the amplitude (boost or cut) for each ﬁ lter. The frequency and slope for each ﬁ lter are ﬁ xed, and not adjustable.

Frequency Lock

If you click this button in the top left corner, then the ﬁ lters cannot be selected by clicking on, above, or below the yellow Xs. To select a different frequency, move the blue ﬁ lter icon along the bottom of the screen left or right.

If this is not engaged, then ﬁ lters can be selected by clicking on, above, or below the yellow Xs.

Overlay PEQ

Click this button to switch back to a parametric EQ from the graphic EQ. Once again, you will get a warning message to conﬁ rm that you want to change to the parametric EQ overlay and lose the current EQ settings. Click “Yes” to switch to the parametric EQ overlay.

Note: You cannot “undo” this action.

EQ Preferences

No Scale: Hides the horizontal lines on the graph. Reset Scale: Resets the 0 dB line back to center in the graph, and the vertical scale back to ±15 dB. Zoom In: Magniﬁ es the vertical scale up to ±3 dB. This allows for ﬁ ne tuning the amplitude settings. Zoom Out: Diminishes the vertical scale up to ±60 dB in 3 dB steps. This allows you to adjust the view to see the

entire frequency response curve of the graphic EQ. Up: Shifts the 0 dB line upwards by 3 dB increments on the graph. Down: Shifts the 0 dB line downwards by 3 dB increments on the graph. EQ Pref EXIT: Return to the Overlay Functions selections.

Overlay Copy

This copies all the current settings for the graphic EQ to the clipboard. Use this to copy your current settings to other channels of the mixer.

Overlay Paste

This overwrites all the current settings for the graphic EQ with the settings that were last copied to the clipboard. Note that if you copy a graphic EQ and paste it, this will appear even if you are currently in the parametric EQ view, and similarly, if you copy a PEQ, and paste it, it will appear even if you are in the GEQ view.

Overlay Bypass/Overlay Insert

Click this button to bypass all the ﬁ lters in the EQ section. This allows the signal to pass without processing. The button will change to “Overlay Insert” and the other buttons will grey-out and become inactive. Note: if this is a new EQ, and no EQ ﬁ lters have been added, or the EQ has been made ﬂ at with the overlay ﬂ at button, then the other buttons are already greyed out.

Click the Overlay Insert button to reinsert the EQ section into the signal path.

Use this bypass/insert to do a quick A/B comparison of the signal with and without EQ.

Overlay Flat

This button returns all the ﬁ lter settings to their default values. want to ﬂ atten the EQ overlay and lose the current EQ settings. Click “Yes” to ﬂ atten the EQ overlay.

Note: You cannot “undo” this action.

You will get a warning message to conﬁ rm that you

Filter Bypass/Filter Insert

Click this button to bypass the selected ﬁ lter in the EQ section. This allows the signal to pass without the selected ﬁ lter affecting it, so you can do a quick A/B comparison of the signal with and without the selected ﬁ lter. The ﬁ lter boost or cut will shift to ﬂ at at 0 dB. The button changes to read Filter Insert.

Click the Filter Insert button to reinsert the selected ﬁ lter into the signal path, and it will change to Filter Bypass. Shortcut: You can quickly bypass/insert a ﬁ lter by clicking on the blue box above, and dragging it down

Filter Flat

This button returns the settings for the selected ﬁ lter to their default values. message to conﬁ rm that you want to ﬂ atten the ﬁ lter. Click “Yes” to ﬂ atten the selected ﬁ lter.

Note: You cannot “undo” this action.

You will get a warning

Filter Delete

This button deletes the selected ﬁ lter (applies to the parametric EQ only). message to conﬁ rm that you want to delete the ﬁ lter. Click “Yes” to delete the selected ﬁ lter.

You will get a warning

Note: You cannot “undo” this action or delete a graphic EQ.

Filter Edit

This button allows you to edit the parameters of the selected ﬁ lter with an onscreen numeric keypad. When you click the button, the editable parameters for the selected ﬁ lter appear as buttons at the top of the graph. Click a button to bring up the keypad, which you can use to enter a precise value for that parameter (Gain, Frequency, and BW for the parametric EQ, and Gain for the graphic EQ). Note that the computer numeric keypad cannot be used, so do not try it or you will exit out to other TT24 screens.

4. Lake Loudspeaker Processor Mode (4x8)

When the Lake Loudspeaker Processor mode is selected, you can choose from among a variety of conﬁ gurations, including 2-way, 3-way, and 4-way crossover operation, as well as presets optimized for speciﬁ c types of loudspeakers.

Source Assign

You must assign a source for each crossover module. You can select from any aux send (1-12), matrix send (A-H), or the main left, right, or mono outputs. The processed signals are sent to the outputs of the LP48 card (1-8).

Edit

Click the EDIT button to open the Speaker Processing Edit window. This window is where you conﬁ gure the types of crossovers you want to use, and add ﬁ lters, delay, and limiting features.

Normally there is a short delay for the window to appear, and there may be a warning that the display should be set to 16-bit for best performance. It is usually OK to ignore this warning, but if you see any problems, set your computer graphics display to suit.

Main Buttons

The Speaker Processing Edit Window is your main work area. Below it are buttons that are described in this chapter in the following order:

Home System Store/Recall Modules Groups Solo/Mute User Preferences Icon Control

Button Menus used in Loudspeaker Processor mode

This map shows the general layout of the button menus and their submenus for the Loudspeaker Processor mode. The buttons at the bottom of the Speaker Processing Edit window provide access to processing options. This bar updates as you go into various screens and menus.

Selectable buttons are blue. Buttons that lead to sub-menus turn orange with black text when selected. Non-selectable buttons are grey. Some will turn blue when items such as modules or groups are selected, and

some will turn blue when you are in Designer Mode.

4.1 Home

Click this button to quickly return to the default Speaker Processing Edit window.

HOME System Store/Recall

Recall

Store

New Store

File Utilities

Open

Read Only

Rename

Delete

New Folder

Modules

EQ/Levels LEVELS TAB

Gain

Delay

Limiter Max

Enable Mute

Enable Polarity

Meter Options

Label & Lock

Label Module

Unlock Module

Set Mod Password

Unlock Base

Set Base Password

Remove

Module Store/Recall

Recall

Store

New Store

Base Configuration

File Utilities

Open

Read Only

Rename

Delete

New Folder

EQ/Levels XOVER TAB

Crossover Functions

Max RMS Level

Max RMS Corner

Max RMS Attack

Max RMS Release

Max Peak Level

Input +4dBu Reference

Pre Limiter

AmpClip reference

Assign Meters

Label Channel

Level Limits

Adjust Factory

Gain/Delay Limits

Limiter Max Limits

Meter Parameters

Designer Mode Only

Crossover Split

Crossover Select

Filter Bypass

Filter Flat

Filter Delete

Filter Edit

Designer Mode is accessed through the User Preferences/Designer Functions menu

HPF/LPF Functions

Crossover Hide

Crossover View Only

EQ Preferences

Crossover Copy

Crossover Paste

Input HPF

Low Output HPF

HPF Enable

LPF Enable

No Scale

Reset Scale

Zoom In

Zoom Out

Down

Phase Large

Groups

EQ/Levels LEVELS TAB

Assign

Label

Remove

Gang

User Preferenc es

Delay Units

Designer Functions

Show Mode

Milliseconds

Meters

Feet

Change Password

Designer Mode

Global Access

EQ Hide

EQ View Only

Xover Hide

Xover View Only

Levels Hide

Levels View Only

Solo/Mute

EQ/Levels

Solo/Mute Enable

Pile

All Mute

Icon Control

Meter On/Off

Icon Small

Icon Normal

Icon Medium

Icon Large

4.2 System Store/Recall

System Store/Recall

Recall

Store

New Store

File Utilities

Open

Read Only

Rename

Delete

New Folder

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