Assessments - 6, GPA: 4
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Facilidade de uso
Its high degree of flexibility enables the set up and optimization of active multiway systems with variables previously unavailable in a single-rack-space device. The unit can be configured in two-way stereo, two-way dual mono, three-way mono with a direct out and four-way mono. Functional blocks in the unit include high- and low-pass filters, tunable low-cut filters to extend the low-end response of bass cabinets, parametric equalizers, low- and high-shelving equalizers, limiters and delays. The Dx34 addresses many different sound system configurations. The Dx34 is factory programmed for the Electro-Voice MT-4 four-way systems, MT-2 and PI modular three-way systems, MH stadium horn systems and portable sound reinforcement systems. Additional listings of parameter values for other EV components and systems can be downloaded off the Electro-Voice BBS at 616/695-4791 (8,N,1). The unit can be set to operate in one of two modes. Preset mode allows the user to select factory presets from a list of loudspeaker cabinets and only gives the user control of the limiter parameters at each output. Full-edit mode provides access to all parameters, allowing adjustment and saving of all settings. A total of 16 user presets is available. The A/D/A conversion in the Dx34 is done with linear 18-bit converters. The input A/D section is a 64-times oversampled sigma-delta convertor and the output D/A is oversampled eight times. Internal resolution is 24 bits, using the Motorola DSP56004 processor. All inputs and outputs are electronically balanced with XLR-type sockets. These inputs and outputs can be retrofitted with isolating balanced transformers. EV part number TRB-5 is the optional input transformer. EV part number TRB-4 is the optional output transformer. FEATURE SUMMARY • 1st-, 2nd- and 4th-order Bessel, Butterworth and Linkwitz-Riley, 3rd-order Bessel and Butterworth filter responses. • 2nd-order tunable low-cut (high-pass) filters with up to 6 db (Q = 2.0) of boost to extend the low end response of bass cabinets. • 6- and 12- dB slopes on the low- and high-shelving EQ. Gain range is ±12 dB for both low-shelve slopes, ±12 dB for the 6-dB high-shelve slope and +6, -12 dB for the 12-dB high-shelve slope. • Two parametric EQ’s in the high-pass channels for horn equalization. The Q range is from 0.4 to 20. Gain range is ±12 dB. • Up to 10-ms individual channel delay with a resolution of 21 ps. • Delay units are selectable in distance or time. • Polarity switch on each output channel. • Digital gain stage with a range of -24 to +6 dB. • Individual output channel limiters with adjustable threshold, decay rate and hold time. • “Lock-out” feature to prevent unauthorized use. • “Slow,” “peak hold” and “no peak” meter display modes. • MIDI addressable. • MIDI dumps to save and transfer user presets. • Mutes on each output channel. DESCRIPTION AND FEATURES SPECIFICATIONS Primary ac voltage Power Consumption Safety Class Inputs Input Voltage (nominal) Maximum Input Voltage Input Impedance CMRR Insertion Loss of the Input Transformer A/D Conversion Outputs Output Voltage (nominal) Maximum Output Voltage Output Impedance Minimum Load Impedance D/A Conversion Frequency Response S/N Ratio THD without Transformer THD with Transformer Crossovers Equalizers Limiter Delay Data Format Sampling Rate MIDI IN/OUT Display Ground Lift Dimensions (hwd) Weight Lock Operation Retrofitting Kits 90-250 V ac, 50-60 Hz (without switching) 21 W maximum 1 Two female XLR's, electronically balanced, transformer optional +4 dBu (1.23 V) +21 dBu (8.7 V) 20 kilohms > 70 dB (1 kHz) < 1.5 dB 18 bit linear, sigma-delta, 64-times oversampling, linear phase Four male XLR's, electronically balanced, transformers optional +4 dBu (1.23 V) +21 dBu (8.7 V) < 100 ohms 600 ohms 18 bit linear, eight-times oversampling, linear phase 20-20,000 Hz, ± 0.3 dB > 102 dB (typical) < 0.01% (1 kHz) <0.1%(1 kHz) 6-, 12-, 18- and 24-dB-per-octave slopes; Butterworth, Bessel and Linkwitz-Riley characteristics Low-shelving EQ's Eight parametric EQ's Two high-shelving EQ's Two low-cut filters (B6 alignment switchable) Four digital limiters One master delay (2 ms -1,000 ms) Four channel delays (0 ms - 10 ms) Delay increment 21 psec 18-bit linear, 24-bit internal 46.875 kHz Data dump, master/slave operation 2 x 16-digit alphanumerical LCD with LED back light Disconnects ground from housing 43.6 mm x 483 mm x 287 mm (1.75 in. x 19 in. x 11.25 in.) 4 kg (8.8 lb) Disable and enable access to internal functions of unit TRB-5 (one input transformer) TRB-4 (one output transformer) SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE 5 0154 DESCRIPTION AND FEATURES DIMENSIONS 7 D_0 ïs° 5d G G G G O ? r~- BB '—^ E ] 0 E CO CO It 1 i ï i i 11 O y D 0 o «o Ô * E > c ri O E E o E E CO DESCRIPTION AND FEATURES 1. 6dB 2. 12 dB Q 0.5 3. 12 dB Q 0.7 4. 12 dB Q 0.8 5. 12 dB Q 1.0 6. 12 dB Q 1.2 7. 12 dB...