Features & Applications
Features
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Applications
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Detailed Description D48X
D48X is a loudspeaker matrix processor in the NST Audio DSP system range, with 4 analog inputs and 8 analog outputs. It combines AES3 digital I/O with onboard signal processing for routing, system management and loudspeaker applications.
Processing includes equalization, delay, gain and output limiting, with functions and filter resources specific to the model. Input-equipped models add input dynamics and filtering before signals are routed to the outputs. The technical table distinguishes physical I/O, network-audio channels and processing resources.
D-Net provides device setup, routing, monitoring and preset management over a suitable network. D48X and ID48X also support FIR filtering, within their published tap limits. The platform supports professional installations and live sound systems where repeatable routing and loudspeaker processing are required.
Manufacturer documents: Technical datasheet · User manual
Technical Specifications D48X
Configuration |
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|---|---|
| TYPE | Loudspeaker / matrix processor |
| INPUTS | 4 analog; 4 AES3 channels |
| OUTPUTS | 8 analog; 8 AES3 channels |
| CONTROL | D-Net; Ethernet |
Analogue Inputs – 4 |
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| CONNECTION | Electronically balanced, pin 2 hot |
| CMRR | >60dB @ 1kHz |
| MAXIMUM LEVEL | >20dBu |
| INPUT IMPEDANCE | 10kΩ balanced |
AES Inputs – 2 x 2 channel |
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| CONNECTION | Transformer balanced, pin 2 hot |
| AES INPUT SAMPLE RATES | 8kHz to 192kHz |
| AES INPUT S/N RATIO | 139dB |
| INPUT IMPEDANCE | 110Ω |
Analogue Outputs – 8 |
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| CONNECTION | Electronically balanced, pin 2 hot |
| MAXIMUM LEVEL | >20dBu |
| SOURCE IMPEDANCE | <60Ω |
AES Outputs – 4 x 2 channel |
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| CONNECTION | Transformer balanced, pin 2 hot |
| SAMPLE RATE | same as operating sample rate |
| SOURCE IMPEDANCE | 110Ω |
Performance |
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| FREQUENCY RESPONSE (12HZ TO 32KHZ) | +/-0.2dB |
| DYNAMIC RANGE | >119dB 'A' weighted (in to out analogue) |
| THD + N (+19DB @ 1KHZ) | 0.00029% |
| LATENCY | 0.427ms (in to out, analogue) |
Processing [96kHz] |
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| INPUT GAIN (PER CHANNEL) | -30 to +15dB in 0.1dB steps, mute, phase |
| INPUT DELAY (PER CHANNEL) | 0 to 1.3s in 10.4uS steps |
| INPUT COMPRESSOR (PER CHANNEL) | Threshold (-30 to +22 dBu), Attack, Release, Ratio, Soft-Knee |
| INPUT PARAMETRIC EQ (PER CHANNEL) | 8 bands – parametric, low shelf, high shelf, notch, band-pass |
| INPUT GRAPHIC EQ (PER CHANNEL) | 28 bands |
| INPUT DYNAMIC EQ (PER CHANNEL) | 3 bands – parametric/low shelf/high shelf, boost/cut above/below, threshold, ratio, attack, release |
| INPUT HIGH-PASS FILTER (PER CHANNEL) | Up to 24dB/octave (Bensen / Butterworth / Bessel / Linkwitz-Riley) |
| ROUTING INPUTS TO OUTPUTS | Choice of modes (Matrix Mixer, Free Routing, 1×8 crossover, 2×4 crossover, 4×2 crossover, 2×3 crossover + 2 Aux) |
| OUTPUT PARAMETRIC EQ (PER CHANNEL) | 16 bands – parametric, low shelf, high shelf, notch, band-pass |
| OUTPUT HIGH-PASS AND LOW-PASS FILTER (PER CHANNEL) | Up to 48dB/octave (Bensen / Butterworth / Bessel / Linkwitz-Riley) |
| OUTPUT GAIN (PER CHANNEL) | -30 to +15dB in 0.1dB steps, mute, phase |
| OUTPUT DELAY (PER CHANNEL) | 0 to 1.3s in 10.4uS steps |
| OUTPUT LIMITER (PER CHANNEL) | Threshold (-50 to +22dBu), attack, release, auto attack/release option |
| FIR SUPPORT | 2048 total taps |
| PRESETS | Up to 100 |
Comms |
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| CONTROL NETWORK | 2 x 1Gbps Ethernet on rear panel (Ethercon connector) |
| USB CONTROL | USB Type C socket |
Power Requirements |
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| MAINS CONNECTOR | 3-pin IEC input, fused |
| MAINS SUPPLY | 90-250VAC, 50-60Hz < 20W |
Dimensions |
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| HEIGHT | 44mm (1.75inch) 1U |
| DEPTH | 213mm (8.4 inches) |
| WIDTH | 482mm (19 inches) |
Weight |
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| NET | 2.5kg |
| SHIPPING | 3.5kg |


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