Electro-Voice Dx38 Digital Sound System Processor
With its 2-in/4-out architecture, the Dx38 is the perfect system controller for multi-way loudspeaker arrays. It also works perfectly for signal distribution in larger sound systems with delay lines, since it allows the sum of inputs A&B to act as a virtual third input. And one central PC can control as many as 31 units (up to 3,930 feet away) through RS-232, MIDI, or (optional) RS-485 interfaces.
The Dx38’s optional contact closure interface allows remote switching of presets or muting. The Dx38 comes with 50 factory presets for EV speaker systems and can store another 30 user presets. The Dx38 is always shipped with the latest version of RACE software, but it’s easy to upgrade or try RACE out — RACE is available as a free download at www.electrovoice.com.
Easy Operation without a PC
No computer available? The Dx38 can be easily used without one. A clearly arranged graphic display helps in editing all parameters. Four LEDs monitor the status of each output (Sub, Low, Mid, Hi, or any combination) for quick output assignment. The output level control pots are push pots that send dedicated output information directly to the display for editing. And the Dx38 can be locked to prevent unauthorized changes.
With the Dx38’s optional RS-485 interface, RACE software permits control of large, complex speaker systems of up to 124 outputs. Access to complex networks is provided either by exchanging the factory-installed RS-232 interface with an optional RS-485 interface, or by connecting a DCN-485 converter (RS-232 to RS-485) to the PC’s COM port. The RS-485 and the DCN-485 both provide XLR connector output. The DCN-485 requires no power supply. With conventional microphone cables, units can be controlled over distances up to 655 feet. CAT-5 cabling allows control over control distances up to 3,930 feet. Realtime monitoring of all parameters — including frequency response, input and output metering, and compressor/limiter thresholds — provides a complete, up-to-the-second visual overview of the system.
Specifications
- AC voltage 90-250 V AC (50-60 Hz)
- Power consumption 30 W maximum
- Safety class VDE/IEC Class I
- Inputs 2 x XLR in, electronically balanced, transformers optional
- 2 x XLR OUT (Direct Out)
- Nominal input voltage 1.55 V (+6 dBu)
- Maximum input voltage 24.5 V (+30 dBu)
- Input impedance 20 kO
- Common-mode rejection >40 dB (1 kHz)
- A/D conversion 24-bit; 128x oversampled; linear phase
- Outputs 4 x XLR out; electronically balanced
- Nominal output voltage 1.55 V (+6 dBu)
- Maximum output voltage 8.7 V (+21 dBu)
- Output impedance <100 O
- Minimum load impedance 600 O
- D/A conversion 24-bit; 128x oversampled; linear phase
- Frequency response 20 Hz–20 kHz (-0.5 dB)
- S/N ratio >115 dB (typical)
- THD without transformer <0.01% (1 kHz)
- THD with transformer <0.05% (1 kHz)
- Crossover Independently adjustable high- and low-pass filters with Butterworth and Linkwitz-Riley 12- and 24-dB/octave slopes and Bessel 6-, 12-, 18- and 24-dB/octave slopes
- EQ filters Five filters per input; four filters per output: – Parametric EQ (20 Hz–20 kHz; Q 0.4–20.0; +/-12 dB); – Low shelf (20 Hz - 20 kHz; 6/12-dB slope; +/-12 dB); Hi shelf (6-dB slope; +/-12 dB); – High- and low-pass (6/12-dB slope; Q 0.4–2.0); – All pass (outputs only)
- Compressors One per output, with adjustable threshold, compression ratio, and attack/release times
- Limiters One per output, with adjustable threshold and release time
- MIDI in/out/thru Data dump/master-slave operation/remote control
- Delay 3 master delays (2–900 ms)
- 4 channel delays (0–900 ms)
- Delay increment: 21 µsec
- Data format 24-bit linear AD/DA conversion; 48-bit processing
- Sample rate 48 kHz
- Display 122 x 32 dots, graphic LCD display with LED backlight
- Dimensions 1.72" (43.6 mm) x 19.0" (483 mm) x 14.8" (375 mm) hwd
- Weight 11 lbs (5 kg)
- Protection function Password lock
- Accessories (supplied) RACE software (also free download from www.electrovoice.com)
- NRS 90243 RS-232 interface (installed)
- Accessories (optional) NRS 90247 RS-485 interface, DCN485 RS-232 to RS-485 converter
- NRS 90246 contact-closure interface
- NRS 90244 input transformer
