Ashly Protea DSP 3.24CL-d User Manual

Digital Audio Products

3.24CL

3.24CL-d

Digital Crossover

System Processor

Operating Manual

ASHLY AUDIO INC.

847 Holt Road Webster, NY 14580-9103 Phone: [phone]

Toll-Free: [phone] Fax: [phone]

www.ashly.com

Operating Manual - PROTEA SYSTEM II 3.24CL Crossover / System Processor

Table Of Contents

1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1 Audio Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 User Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 AC POWER REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4 FRONT PANEL CONTROL FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.1 Function Keys and Data Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.2 Presets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.3 Input Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.4 Output Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.5 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.6 Audio Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4.6a Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4.6b EQ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4.6c Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4.6d Crossover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.6e Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.7 Other Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.7a Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.7b Save . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.7c Copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.7d Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.7e Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.7f Factory Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5 AUDIO CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7 DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

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Operating Manual - PROTEA SYSTEM II 3.24CL Crossover / System Processor

8 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

9 WARRANTY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

10 INSTALLATION RECORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

The lightning flash with arrowhead sym­bol, within an equilateral triangle, is in­tended to alert the user to the presence of
uninsulated "dangerous voltage" within
the product's enclosure that may be of
sufficient magnitude to constitute a risk
of electric shock to persons.

THIS APPARATUS MUST BE EARTHED

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER. NO USER SERVICEABLE PARTS IN­SIDE. REFER SERVICING TO QUALIFIED SERVICE PER­SONNEL.

TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK,
DO NOT EXPOSE THIS APPlIANCE TO RAIN OR MOISTURE.

TO REDUCE THE RISK OF FIRE, REPLACE ONLY WITH
SAME TYPE FUSE. REFER REPLACEMENT TO QUALI­FIED SERVICE PERSONNEL.

WARNING:

The exclamation point within an eqilateral
triangle is intended to alert the user to the
presence of important operating and main­tenance instructions in the literature ac­companying the device.

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Operating Manual - PROTEA SYSTEM II 3.24CL Crossover / System Processor

1. INTRODUCTION

Thank you for your purchase of this Ashly Protea 3.24CL Digital Crossover/System Processor. The
Protea SYSTEM II series builds on the tradition of quality and value which has earned Ashly its place as a
market leader in crossovers, equalization, and signal processing.

Your new 3.24CL is a three input/six output digital signal processor capable of precise control of a
broad range of audio functions. The front panel interface allows quick access to all control parameters by
offering dedicated function buttons, eliminating the need for hidden sub-menus. The 3.24CL-d is the same

as the 3.24CL in every respect except for the input and output delay structure.

1.1 AUDIO FEATURES

The Protea 3.24CL utilize state of the art DSP technologies, beginning with 24 bit, 48kHz delta-sigma A/D convert­ers with 128x oversampling. Digital processing includes Gain, Polarity Invert, Parametric EQ, Shelving Filters, Time Delay,
Crossover Functions, Compression, Limiting, and Signal Routing, all taking place in twin high performance DSP proces­sors. D/A conversion uses 24 bit delta-sigma converters with 128x oversampling. All inputs and outputs are precision
balanced and RF protected using XLR connectors.

1.2 USER INTERFACE

Front Panel Interface: A backlit 2 x 20 character LCD displays channel and function settings. Dedicated buttons

provide access to all audio functions and system tools. The display indicates the current preset number, then subse­quently shows the selected input or output and its active control parameters. Five segment LED arrays on each input and
output provide audio level information and mute status.

2. UNPACKING

As a part of our system of quality control, every Ashly product is carefully inspected before leaving the factory
to ensure flawless appearance. After unpacking, please inspect for any physical damage. Save the shipping carton and
all packing materials, as they were carefully designed to minimize the possibility of transportation damage should the unit
again require packing and shipping. In the event that damage has occurred, immediately notify your dealer so that a
written claim to cover the damages can be initiated. The right to any claim against a public carrier can be forfeited if the
carrier is not notified promptly and if the shipping carton and packing materials are not available for inspection by the
carrier. Save all packing materials until the claim has been settled.

3. AC POWER REQUIREMENTS

Note: The AC power switch for model 3.24CL is on the back panel. The Protea 3.24CL uses a universal input

power supply which will accept any line voltage from 80VAC to 260VAC, 50-60Hz, and is resistant to voltage dips, or
"brown outs". A standard IEC-320 grounded AC inlet is provided on the rear panel to accept the detachable power cord.
Never remove the AC earth ground connection to the 3.24CL. In the event of fuse failure, refer the product to a qualified
service technician for fuse replacement, replacing only with the same type and rating fuse.

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Operating Manual - PROTEA SYSTEM II 3.24CL Crossover / System Processor

4. FRONT PANEL CONTROL FEATURES

4.1 Function Keys and Data Wheel

To the right of the LCD display are two
unlabeled function keys and a rotary data
wheel. All audio and system parameters are ed­ited using these three controls. Each of the two
lines of text on the LCD display correspond to a
dedicated function key, so that various tasks
on both lines may be selected using their re­spective keys. The selected task is highlighted by a flashing underscore beneath the word or number, and the parameter
is then adjusted up or down with the data wheel. The Esc key will exit any activity and return to the top level showing the
preset number and name.

4.2 Presets

The 3.24CL is organized into 30 programmable presets, each completely defining the configuration of all three
inputs and six outputs along with their respective audio components. There are ten repeating preset configurations pre­loaded into the 3.24CL which are simply starting points for common applications, and all can be modified, renamed, and
saved to suit the end user. Please Note: In addition to the 30 preset numbers, a constantly refreshed Working Preset is
used to take a "snapshot" of all current settings should the unit be turned off before changes can be saved.

When the 3.24CL is first powered up, the last working preset is loaded, displaying the number and name last used
before the unit was turned off. Any modifications made to that preset before saving it will remain in the working preset
until either the modified preset is saved, or a fresh preset is recalled to the 3.24CL. When modifications to an existing
preset are made without saving, the display adds the text (modified) after the preset number.

Preset 01
3 x 2-way Crossover

4.3 Input Select

There are three audio inputs to the 3.24CL, and each input is processed
independently and may be routed to one or several outputs. Select an input to edit
its Gain, EQ, and Delay settings, or to mute it. Signal routing occurs in the output
section.

4.4 Output Select

There are six outputs on the 3.24CL, and each output can ob­tain its source from any input, all inputs, a combinations of inputs A
and B, or no input (off). Select an output channel to edit its Source,
Gain, Polarity, EQ, Delay, Crossover, or Limiter functions.

4.5 LED Indicators

Each input and output has a five segment LED array for audio
level display, ranging from -20 through clipping. The -20 LED is two­color, also serving as the Mute indicator by turning red. The meter scale is factory set so that 0 on the meter is 0dBu
(0.775Vrms), however it can be easily changed to VU scale (0 = +4dBu, or 1.228Vrms) within the Util menu.

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