OMX-LAS2
Dual Channel Audio
Line-Level Amplifier
812 Kings Highway • Saugerties, NY 12477
A Division of Tower Products, Inc.
OMX-LAS2
812 Kings Highway • Saugerties, NY 12477
A Division of Tower Products, Inc.
Dual Channel Audio
Line-Level Amplifier
There is a great deal of incorrect information concerning audio levels
and how to measure them. The following chart may help in determin-
ing the various audio level issues. Use it as a reference to better help
you understand your audio needs.
A BRIEF WORD ON AUDIO
DECIBELS
RATIO
dBV (pp)
dBv (rms)
+20dB
10.0 x
10.0 volts
7.75 volts
+10dB
3.2 x
3.2 volts
2.45 volts
0dB
1.0 x
1.0 volts
.775 volts
-10dB
.32 x
.32 volts
.245 volts
-20dB
.1 x
.1 volts
.077 volts
-30dB
.032 x
.032 volts
.024 volts
-40dB
.01 x
.01 volts
.008 volts
-50dB
.003 x
.003 volts
.002 volts
-60dB
.001 x
.001 volts
.0008 volts
-70dB
.0003 x
.0003 volts
.0002 volts
• +8dBv (1.95 volts) = 0VU for the broadcast industry
• +4dBv (1.23 volts) = 0VU for the recording industry
• -10dBv (0.245 volts) = 0VU for home multi-track recording equipment
• -15dBv (0.138 volts) = 0VU for musical instrument level equipment
The OMX-LAS2 can be used with unbalanced devices. To connect
an unbalanced source to the input, simply use an unbalanced 1/4"
phone plug (tip-sleeve). Once inserted into the OMX-LAS2 , it will
unbalance the input. Follow the same procedure for the output.
Two front panel controls are used for signal level adjustment, one for
each channel. A fully counterclockwise turn of the gain control knob
will shut off the signal.
To LOOP one OMX-LAS2 to another, or any other audio device,
bridge the input connector jack and feed the signal into another unit or
another OMX-LAS2 . (Observe Signal Polarity & Ground)
Note: Use High Quality Twisted Pair Wiring with Shield when
cabling.
OUTPUT WIRING:
Connect output as indicated observing polarity and ground.
LOOPING SEVERAL UNITS
ADJUSTING GAIN
USING UNBALANCED DEVICES
