User guide
USB — SMX 44/84 USB
USB specication ............................ USB 2.0 compatible
USB data rates ................................ Low speed (1.5 Mbps), full speed (12 Mbps), high speed (480 Mbps)
USB input — SMX 44/84 USB
Connectors .................................... 4 or 8 female USB type B
USB output — SMX 44/84 USB
Connectors .................................... 8 female USB type A
Audio — SMX 84/88/1616A (analog)
Routing
SMX 84 A ................................ 8 x 4 stereo matrix
SMX 88 A ................................ 8 x 8 stereo matrix
SMX 1616 A ............................ 16 x 16 stereo matrix
Gain ............................................... Unbalanced output: -6 dB; balanced output 0 dB
Frequency response ........................ 20 Hz to 20 kHz, ±0.05 dB
THD + Noise ................................... 0.03% @ 1 kHz, 0.3% @ 20 kHz at nominal level
S/N ................................................. >102 dB at maximum output (21 dBu, unweighted) (balanced)
Crosstalk ........................................ <-95 dB @ 1 kHz, fully loaded
Stereo channel separation .............. >98 dB @ 1 kHz
CMRR ............................................ >70 dB @ 20 Hz to 20 kHz
Audio input — SMX 84/88/1616 A (analog)
Number/signal type ........................ 8 or 16 stereo, balanced/unbalanced
Connectors .................................... (8 or 16) 3.5 mm captive screw connector, 5 pole
Impedance ..................................... >10k ohms unbalanced/balanced, DC coupled
Nominal level ................................. 0 dBu (0.775 Vrms)
Maximum level ............................... +19.5 dBu, (balanced or unbalanced) at 1% THD+N
Input gain adjustment .................... –18 dB to +24 dB, adjustable per input; default = 0 dB
NOTE: 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
Audio output— SMX 84/88/1616 A (analog)
Number/signal type ........................ 4, 8, or 16 stereo, balanced/unbalanced
Connectors .................................... (8 or 16) 3.5 mm captive screw connector, 5 pole
Impedance ..................................... 50 ohms unbalanced, 100 ohms balanced
Gain error ...................................... ±0.1 dB channel to channel
Maximum level (Hi-Z) ...................... >+21 dBu, balanced or unbalanced at 0.1% THD+N
Maximum level (600 ohm) .............. >+15 dBm, balanced or unbalanced at 0.1% THD+N
Volume control range ..................... -76 dB to 0 dB (volume numbers 0 through 64) in a 35 dB increment from step 0
to step 1, then in 1 dB increments from steps 1 to 64; default = 64 (0 dB)
NOTE: Attenuation = volume number minus 64. The default is 0 dB = volume number 64.
SMX System MultiMatrix Switcher • Reference Information 121