Ashly Protea 4.24D Quick start guide

Protea System II 4.24D
The programmable digital distribution processor shall consist of four
inputs and eight outputs with the ability to assign any input to any
output. Each input channel shall include: a routing stage allowing the
user to assign the input to any or a combination of output(s), a gain
stage capable of +12dB boost and -40dB cut; six filter stages con-
figurable to be a parametric filter with a frequency range of 19.7Hz to
21.9KHz, 1/24th octave step and a +15dB boost, -40dB cut, or a 6 or
12dB/octave high or low shelf filter. Each output channel shall include:
a high pass/ low pass crossover filter stage with selectable slopes of 12,
18, 24 and 48dB per octave using Linkwitz-Riley, Bessel or Butterworth
filter configurations; four filter stages configurable to be a parametric
filter with a frequency range of (Off) and 19.7Hz to 21.9KHz, 1/24th
octave step and a +15dB boost, -40dB cut, or a 6 or 12dB/octave high
or low shelf filter; a delay stage with a maximum delay of 682.54ms;
a gain stage capable of +12dB boost and -40dB cut and the ability to
invert the phase; a full function compressor/limiter with a threshold
range of -20dBu to +20dBu. Each input and output shall have individual
mute capability. The programmable digital distribution processor shall
have a maximum in/out level of +20dBu. Frequency response shall be
±0.25dB 20Hz to 20kHz. Dynamic Range shall be greater than 110dB
(20-20KHz, unweighted) and SMPTE intermodulation distortion or THD
shall be less than 0.01% at 1KHz, +20dBu. Input impedance shall be
18K ohms active balanced. Output impedance shall be active balanced,
112 ohms. Inputs and outputs shall be balanced type on euroblock con-
nectors. LED indicators shall show signal present, limiter threshold, clip
and mute conditions. Full programming and control of the unit shall be
from the front or rear panel accessible RS-232 serial port using Ashly
Protea System Software, or via MIDI. There shall be 30 factory presets
that may be overwritten by the user and stored.
External recall of
up to eight scenes via contact closure shall be accessible
through a euroblock connector.
There shall also be a four lev-
els of password protected security lockout. The programmable digital
crossover shall weigh 9.0 lbs net and mount in a standard 19” rack
using 1 space (1.75” high). The power requirement shall be 80-260VAC,
50-60Hz, 30W. The unit shall be an Ashly Audio Protea System II 4.24D
Digital Distribution Processor.
Features:
• One Rack Space
• Four Inputs - Eight Outputs
• Inputs Assignable to Any Output
• Crossover, EQ, Delay and Limiter
Functions
• Linkwitz-Riley, Bessel and
Butterworth Filters
• 12, 18, 24 and 48dB/Octave Slopes
• Parametric EQ: Full Bandwidth,
1/64th to 4 Octave Range
• 682.54ms Output Delay
• Limiter on Each Output
• Programmable by PC or MIDI
• Individual Input and Output
Signal Present/Limiter
Threshold/Clip LEDs
• Balanced Inputs and Outputs
• Euroblock Audio Connections
• Contact Closure for External
Recall of 8 Scenes
• Password Protected System
Security
• Five Year Warranty
• Five Year Warranty
Technical Notes & Specifications
Protea System II 4.24D Digital Distribution Processor
Architects Speci cations

Ashly Audio Inc., 847 Holt Road, Webster, NY 14580-9103, Toll Free [phone], Telephone [phone], FAX [phone]
Internet: http://www.ashly.com, email: [e-mail]
Ashly manufactures a complete and comprehensive line of Graphic and Parametric Equalizers,
Electronic Crossovers, Power Amplifiers, Compressor-Limiters, Mixers, and
Amplifier Input Options. Please call, write or visit our web site for information on any of these Ashly Products.
Applications:
Distributed Sound, Sound Masking, Multi-Room Installations for Lobby or Under Balcony Speaker Management, FOH Speaker
Management, Delay Towers and Side Fills, Monitor Systems (wedge and in-ear) Tuning and Protection
General Specifications Protea System II 4.24D
INPUT:
Active Balanced, 18 Kohms
MAX. INPUT LEVEL:
+20 dBu
OUTPUT:
Active Balanced, 100 ohms
MAX. OUTPUT LEVEL:
+20 dBu
FREQUENCY RESPONSE:
20 Hz-20KHz, ±0.25 dB
THD:
<0.01% @1 KHz, +20 dBu
DYNAMIC RANGE:
>110 dB (20 Hz-20 kHz) unweighted
OUTPUT NOISE:
<-90 dBu unweighted
EQ FILTERS:
NUMBER:
6 per Input, 4 per Output
Selectable As:
PARAMETRIC
BANDWIDTH:
1/64th Octave to 4 Octave
RANGE:
+15/-30dB, 0.1 dB increments
RESOLUTION:
1/24th Octave
HIGH-SHELF
SLOPE:
Selectable 6 or 12dB/Octave (1 High
Shelf, 2 High Shelf)
FREQUENCY RANGE:
19.7Hz to 2KHz
RANGE:
+/-15dB, 0.1dB increments
LOW-SHELF
SLOPE:
Selectable 6 or 12dB/Octave (1 Low
Shelf, 2 Low
Shelf)
FREQUENCY RANGE:
3.1886KHz to 20.1587KHz
RANGE:
+/-15 dB, 0.1dB increments
CROSSOVER FILTERS:
HIGH PASS FILTER
TYPE:
Linkwitz-Riley, Bessel, Butterworth
SLOPE:
12, 18, 24 and 48dB/Octave
FREQUENCY RANGE:
Off to 21.983.3KHz, 1/24 Octave
LOW PASS FILTER
TYPE:
Linkwitz-Riley, Bessel, Butterworth
SLOPE:
12, 18, 24 and 48dB/Octave
FREQUENCY RANGE:
Off to 21.983.3KHz, 245 step
increments
DELAY:
OutPUT MAXIMUM DELAY:
682.5ms
INCREMENT:
20µs
INPUT and OUTPUT GAIN:
RANGE:
+12/-40dB, 0.1dB increments
POLARITY
0 or 180 degrees (selectable in the Output Gain Stage)
COMPRESSOR/LIMITER:
THRESHOLD:
-20dBu to +20 dBu, 1.0dB increments
RATIO:
1.2 :1 to Infinity (1.2, 1.5, 2., 3, 4, 6,
10, 20, Infinite:1)
ATTACK:
0.5 ms to 50 ms per dB
RELEASE:
10 ms to 1 sec. per dB
PROCESSOR:
INPUT A TO D:
24 bit
OUTPUT D TO A:
24 bit
PROCESSOR:
24 bit, 56 bit accumulator
SAMPLE RATE:
48 kHz
PROPAGATION DELAY:
1.46 ms
OTHER:
SIGNAL AND CLIP LEDs:
Inputs: -20/Mute, -10, 0, +10, Clip
(dBU or VU)
Outputs: -20/Mute, -10, 0, Limit,
Threshold, Clip (dBu or VU)
RS232 CABLE DISTANCE:
1300ft (Max)
MIDI CABLE DISTANCE:
500ft (Max)
POWER REQUIREMENTS:
80 - 260VAC, 30W max
SHIPPING WEIGHT:
10lbs
DIMENSIONS:
19.0”L x 1.75”H x 6.0”D
I/O CONNECTORS:
Euroblock
ENVIRONMENTAL:
40-120 deg. F, noncondensing
Notes: 0dBu = 0.775V RMS
Rear Panel Protea System II 4.24D
Misc:
Protea System Software for PC control of the Protea 4.24D may be downloaded free from our website. Use it to control the 4.24C,
4.24D, 4.24G, 4.24GS, 4.24PS, 2.24GS and 2.24PS. Download it now to preview the capabilities of the Protea System II Digital
Products. Protea System Software operates on Windows™ 95, 98, 2000, XP and NT platforms.