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4.24C

Procesorul digital de semnal 4.24C e capabil a asigura control precis asupra numeroaselor functii audio. Panoul frontal permite accesul rapid la controlul parametrilor oferind butoane dedicate fiecarei functii, eliminand timpul pierdut cautand prin meniu. Pe un display LCD de 2x20 caractere sunt afisate canalele si setarile functiilor. Pentru setarea mai rapida si o vizualizare mai buna a setarilor, acest procesor poate fi conectat la un calculator prin interfata RS-232 si folosit impreuna cu programul Protea Software Suite. Printre avantajele folosirii acestui software se enumera o interfata mult mai intuitiva a intrarilor si a iesirilor, capacitate mai mare a presetarilor.

Modelul 4.24C foloseste tehnologii DSP de ultima ora, incepand cu convertoarele A/D delta-sigma 24 bit, 48kHz cu oversampling 128x. Procesorul digital include si Gain, Invertor de polaritate, Eqalizor parametric, filtre Shelving, Delay, functie de crossover, compresie, limiter, routarea semnalului. Toate intrarile si iesirile sunt balansate si protejate impotriva distorsiunilor RF folosindu-se conectori XLR.

Fiecare intrare permite controlul gain-ului, delay-ului si a inca sase filtre(fiecare din ele la alegere: parametric, high-shelf, low-shelf). Fiecare iesire permite setarea frecventelor de taieri din crossover si asignarea lor uneia sau mai multor intrari. De asemenea se pot programa patru filtre(fiecare din ele la alegere: parametric, high-shelf, low-shelf), controlul delay-ului, adjustarea gain-ului, inversarea polaritatii si controlul unui compresor/limitator pentru protectia difuzoarelor. Toate acestea sunt posibile cu o singura unitate rack .

Acest produs este fabricat in SUA.

Input	Active Balanced, 18K ohms	Delay Increment	20uS
Max Input Level	+20dBu	Crossover High-Pass Filter Type	Linkwitz-Riley, Bessel, Butterworth
Input and Output Gain Range	+12/-40dB, 0.1dB Incr	Crossover High-Pass Filter Slope	12, 18, 24 and 48dB/Octave
Output	Active Servo-balanced, 100 ohms	Crossover High-Pass Filter Range	Off to 21.98KHz, 245 step incr
Max Output Level	+20dBu	Crossover Low-Pass Filter Type	Linkwitz-Riley, Bessel, Butterworth
Polarity	0 or 180 degrees	Crossover Low-Pass Filter Slope	12, 18, 24 and 48dB/Octave
Frequency Response	20Hz-20KHz, +/-0.25dB	Crossover Low-Pass Filter Range	Off to 21.98KHz, 245 step incr
THD	<0.01% @ 1KHz, +20dBu	Compressor/Limiter Threshold	-20dBu to +20dBu, 1dB incr
Dynamic Range	>110dB(20Hz-20KHz) unweighted	Compressor/Limiter Ratio	1.2, 1.5, 2, 3, 4, 6, 10, 20:1, Infinite:1
Output Noise	<-90dBu unweighted	Compressor/Limiter Attack	0.5ms to 50ms per dB
EQ Filters	6 per input \| 4 per output	Compressor/Limiter Release	10ms to 1Sec per dB
Parametric EQ Bandwidth	1/64th Octave to 4 Octave	Compressor/Limiter Range	20Hz to 10.6KHz
Parametric EQ Range	+15/-30dB, 0.1 dB incr	Input A/D	24 bit
Frequency Resolution	1/24th octave	Output A/D	24 bit
High-Shelf EQ Slope	6 or 12dB/Octave	Processor	24 bit, 56 bit accumulator
High-Shelf EQ Frequency Range	19.7Hz to 2KHz	Sample Rate	48KHz
High-Shelf Range	+/-15dB, 0.1dB incr	Propagation Delay	1.46ms
Low-Shelf EQ Slope	6 or 12dB/Octave	Power Requirements	90-240VAC, 40W
Low-Shelf EQ Frequency Range	3.189KHz to 20.159KHz	Shipping weight	9kg
Low Shelf EQ Range	+/-15dB, 0.1dB incr	Dimensions	19.0"x3.5"x8.5"
Maximum Input Delay	682.5ms	Connections	XLR
Maximum Output Delay	21.33ms	Environmental	4-49 deg. C, noncondensing