Ocean Matrix OMX-LAS2 User manual

OMX-LAS2
Dual Channel Stereo
Audio Line Amplifier
Thank you for purchasing this Ocean Matrix com- ponent. This unit is designed to give you years of
trouble free professional operation for your most
demanding applications. It is our goal to develop long
term partnerships with our customers through our com-
mitment to exceed their expectations.
Instruction Manual
812 Kings Highway • Box 397 • Saugerties, NY 12477
845-246-0428 • FAX [phone]
www.oceanmatrix.com
© 2002 Ocean Matrix • Div. of Tower Products, Inc.

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
The OMX-LAS2 offers 2 channels of line level attenuation & amplification. As an audio
signal conditioning tool for the A/V industry, the OMX-LAS2 was designed to end the
problems created by improper or uneven audio levels encountered by A/V engineers.
Once the signal from the source is fed to the OMX-LAS2 , the operator has full control of
the audio level of the outgoing level. The signal can be attenuated or amplified by a fac-
tor of ±100%.
The OMX-LAS2 is shipped from the factory already calibrated and ready to use. There
is no need for any customer adjustments for normal use of the unit. There are, howev-
er, procedures that must be observed in order to assure proper performance of the unit
in your system.
GENERAL OPERATION
SPECIFICATIONS
AUDIO (per channel)
Input: Max Input: +15dB @ 600Ω
Balanced
Outputs: Variable Balanced 600Ω
Range: -12dB to +12dB
Response: 20-100KHz, ±0.1dB
S/N Ratio: 85dB: 10Hz - 30KHz
Crosstalk: >80dB
Distortion: Less than 0.05%
Power: 110VAC, 50/60Hz, 10 Watts
(220V Model OMX-EU/LAS2)
Dimensions: 1.625"H x 8.25"W x 6.0"D
Weight: 2.5lbs.
Warranty: 3 Years
Options: OMX-RK2 rackmount kit.
Mounts up to two units side-by-
side in 1RU.
1. To prevent fire or shock hazard, do not expose this equipment to
the environment of Humidity and/or dust. Do not use this equipment
in an unprotected outdoor installation or any area classified as a
wet area.
2. The operating temperature of this product must be kept between -
40°C and +95°C. Direct sunlight or an intense source of heat,
direct or ambient, must not be introduced to the product either by
induction or contact.
3. Always keep the product on a stable and secure base or enclosure.
Do not drop the product or subject it to sudden heavy impact.
4. Provide adequate ventilation so that thermal characteristics do not
cause an increase in product temperature to resulting in overheat-
ing.
5. Do not clean the unit by using electrically conductive or corrosive
chemicals. Always be certain to unplug the unit from AC wall
power before any major cleaning. Use a damp cloth only for clean-
ing.
6. Do not subject the product to electrical mains power over voltage:
The product must be used at the rated supply voltages indicated on
the product rear panel only.
7. Do not plug the product into an overloaded electrical outlet. This
may result in fire or electrical shock.
8. Object Ingress and Liquid Entry: Never insert or push sharp metal
objects into the product or use such devices for an attempt at open-
ing or servicing the product. Servicing should be referred to a trained
and qualified technician only. Do not allow liquid of any type to enter
the unit. Do not allow the unit to be submersed in water as this may
cause a shock hazard.
9. A trained qualified technician should perform all servicing of the unit.
There are no serviceable components within the unit for user access.
Safety Precautions

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 PairWiring with Shield when
cabling.
OUTPUT WIRING:
Connect output as indicated observing polarity and ground.
LOOPING SEVERAL UNITS
ADJUSTING GAIN
USING UNBALANCED DEVICES