Ashly Protea 4.8SP is a 4-input by 8-output Digital Loudspeaker Management System (DLMS) that can be fully managed using the Protea DSP Software Suite
1. Creating a Stereo 4-Way System
- Inputs 1 & 2: Left and Right signals.
- Matrix: Route Input 1 to Outputs 1, 3, 5, 7 (LOW, LOW-MID, HIGH-MID, HIGH).
- Route Input 2 to Outputs 2, 4, 6, 8.
- Crossover: Use Linkwitz-Riley filters at 80 Hz, 800 Hz, and 3.5 kHz.
- Result: A bi-amped or tri-amped stereo main system managed entirely from one screen.
3. Real-Time Control & Monitoring
Protea 4.8 allows for real-time adjustments. As you move a fader or change a parameter, the change is instantly applied to the hardware. It also features system monitoring tools, displaying input/output metering, clip indicators, and mute status directly on the PC screen.
- Protea DSP Processors: Specifically the 24.24M and earlier modular series.
- ne Series: The network-enabled series, such as the ne24.24M.
- Pema and nXe Series: Integrated amplifier/DSP units.
- PE Series: Parametric equalizers.
Conclusion
Installation and Setup
System Requirements
While specific requirements vary by software version, Protea 4.8 generally requires:
- Durability: The hardware is built like a tank. Venues refuse to replace a perfectly functional 4.8SP just because the software is old.
- Sound Quality: Many engineers argue the 4.8SP's converters (Crystal Semiconductor) have a musical "vibe" that newer, cleaner DSPs lack.
- No Subscription: Unlike modern cloud-based DSP platforms, the Protea 4.8 software is a one-time, perpetual license. No annual fees, no online activation required.
- Offline Editing: You can design full system configurations on your laptop in a hotel room or office without connecting to the hardware. Save the
.profile and upload it later.
: Each of the four inputs includes gain control, 682ms of delay for time alignment, and six filters (parametric, low-shelf, or high-shelf). Matrix Routing