Meyer Sound S-1 User Manual
Operating Instructions
Meyer Sound Laboratories, Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
S-1
Control
Electronics
Unit
Control
Electronics
Unit
Specifications
Input Type
1
Balanced ISO-Input,
™
10k ohms, 5k ohms per leg
Output Type
Active push-pull, 600 ohms output impedance
Maximum Input Level
Balanced
+26 dBu
Unbalanced
+20 dBu
Maximum Output Level
Balanced
+26 dBu
Unbalanced
+20 dBu
Hum and Noise
2
<-90 dBV
Dynamic Range
3
108 dB
Sense Inputs
10k ohms true differential, opto-isolated
Electronic Crossover Frequency
1400 Hz
Low Frequency Delay Type
Active all-pass
Driver Protection Circuitry
Low Frequency
RMS limiter, 100 msec. integration time
LF excursion limiter (instantaneous)
LF excursion limiter (instantaneous)
High Frequency
RMS limiter, 100 msec. integration time
VHF peak limiter, 2 msec. on-time, 35 msec. release time
HF excursion limiter (instantaneous)
VHF peak limiter, 2 msec. on-time, 35 msec. release time
HF excursion limiter (instantaneous)
Indicators
Sense/Amplifier Gain Detect; Hi and Lo
Green/Red LEDs
RMS Limiter, Excursion Limiter; Hi, Lo and VHF
Red LEDs
Safe
Green LED
Power Supply
Green/Red LED
Controls
Front Panel
Input attenuator, AC power switch
Preset Panel
Lo Cut switch, Safe switch, VHF var/cal switch
VHF control (3/4-turn screwdriver adjust)
VHF control (3/4-turn screwdriver adjust)
Rear Panel
Ground lift switch, AC range switches
Connectors
Balanced Input/Output
3-pin XLR (A-3) female/male
Sense Inputs
Banana jacks (4 dual)
Power
90-125/180-250V AC, 50/60 Hz (rear-panel switchable)
Physical Dimensions
19" W x 1
3
⁄
4
" H x 7
3
⁄
4
" D, standard rack mount
Weight
8 lbs (3.6 kg)
Note 1:
ISO™ Input: Pins 1, 2 and 3
are transformer-isolated,
and shell is connected to
chassis/AC earth ground.
are transformer-isolated,
and shell is connected to
chassis/AC earth ground.
Note 2:
“A”-weighted, unbalanced.
Note 3:
“A”-weighted noise floor to
maximum output.
maximum output.
© 1992 Meyer Sound
05.150.002.01A