Audio Developments AD255 - Manual (Page 9)

8
TECHNICAL SPECIFICATION - ELECTRICAL
REFERENCE 0dB=775mV at 1kHz unless otherwise stated.
MAX GAIN MIC 80dB
LINE 50dB
MAX INPUT LEVEL
MIC @ MAX GAIN -44dB @ MIN GAIN + 6dB
LINE @ MAX GAIN -14dB @ MIN GAIN +20dB
STEREO-RETURN +18dB
TB RETURN +18dB
INPUT IMPEDANCE
MIC >2k5R
LINE >6k5R
STEREO-RETURN >100kR
TB RETURN >20kR
MIC POWERING
48V PHANTOM & 12V TONADER
MAX OUTPUT
+23dBm L-R TRANSFORMER BAL (600R LOAD)
MONO TRANSFORMER BAL (600R LOAD)
+18dBm DIRECT OUT UNBALANCED (600R LOAD)
H’PHONE UNBALANCED (600R LOAD)
TB SEND UNBALANCED (600R LOAD)
OUTPUT IMPEDANCE
<60R L-R & MONO
<20R DIRECT OUT & MONITOR
<20R TB SEND
FREQUENCY RESPONSE
0: -1dB L-R & MONO
0: -1.5dB MONITOR PATHS
HARMONIC DISTORTION
<0.05% @ 1kHz @ 0dBm OUTPUT
<0.15% @ 40Hz to 15kHz @ +15dBm OUTPUT
OVERLOAD INDICATOR ILLUMINATES @ +15dBu at the PRE-FADER POINT
CROSSTALK
<-70dB 40Hz to 15kHz
INTERGROUP & INTERCHANNEL
NOISE
MIC <-126dB EIN 20Hz to 20kHz; 200R SOURCE
LINE <77dB SNR 20Hz to 20kHz 0dBu IN & OUT