Operating Instructions
Meyer Sound Laboratories, Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
S-1
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)
High Frequency RMS limiter, 100 msec. integration time
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)
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.

Note 2:

“A”-weighted, unbalanced.

Note 3:

“A”-weighted noise floor to

maximum output.

© 1992 Meyer Sound 05.150.002.01A