Operating Manual - PROTEA SYSTEM II 4.24D Distribution / System Processor
4
1. INTRODUCTION
Thank you for your purchase of this Ashly Protea 4.24D Digital Distribution/System Proces-
sor. 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 4.24D is a flexible four input/eight output digital signal processor capable of precise
control of a broad range of audio functions. Because it has no user controls, it is ideal for applications
where real-time changes are unlikely or when tamper-proof security is required. All adjustments are
made using Protea System Software for Windows™ (version 5.0 or higher), while third party control-
lers such as SIA SmaartLive™ and Crestron networked control systems are also available
The Protea 4.24D utilizes state of the art DSP technologies, beginning with 24 bit, 48kHz
delta-sigma A/D converters with 128x oversampling. Audio processing includes Gain, Parametric
EQ, Signal Routing, Crossover Functions, Time Delay, Compressor/Limiter, and Polarity Invert, all
taking place in twin high performance 120MHz Motorola DSP processors. D/A conversion uses 24
bit delta-sigma converters with 128x oversampling. All input and output connections are precision
balanced and RF protected using "Euro-Block" style two piece terminal block connectors.
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 4.24D is on the back panel. The Protea 4.24D uses a universal input
power supply which will accept any line voltage in the range of 80VAC to 260VAC, 50-60Hz, and is exceptionally
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 4.24D. 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.
RS-232 Dataport
Sig Mute
Sig Mute
Sig Mute
Sig Mute
Input Channels
24 Bit Digital Distribution System Processor
A
B
C
D
MIDI Channel
