Kramer Electronics, Ltd.
USER MANUAL
Model:
VA-14
4x1 Balanced Audio Mixer
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Introduction
1 Introduction
Welcome to Kramer Electronics (since 1981): a world of unique, creative and
affordable solutions to the infinite range of problems that confront the video,
audio and presentation professional on a daily basis. In recent years, we have
redesigned and upgraded most of our line, making the best even better! Our
500-plus different models now appear in 8 Groups1, which are clearly defined
by function.
Congratulations on purchasing your Kramer VA-14, which is ideal for:
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Live stage and studio audio mixing
Presentation systems and press conferences
Post production in video/audio studios
The package includes the following items:
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VA-14 4x1 Balanced Audio Mixer
Power adapter (12V DC Input)
This user manual2
2 Getting Started
We recommend that you:
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Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
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Review the contents of this user manual
Use Kramer high performance high resolution cables3
2.1 Quick Start
This quick start chart summarizes the basic setup and operation steps.
1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3:
Video, Audio, VGA/XGA Processors; GROUP 4: Interfaces and Sync Processors; GROUP 5: Twisted Pair Interfaces;
GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors
1
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Getting Started
KRAMER: SIMPLE CREATIVE TECHNOLOGY
2
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Overview
3 Overview
The VA-14 4x1 Balanced Audio Mixer is a high quality, low noise, 4-input
balanced audio standalone mixer that provides for two different levels on
each input - Mic level or line level, as well as the selection of either a
dynamic or phantom microphone.
The VA-14 includes:
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Four rear panel XLR input connectors and two XLR output connectors
A front panel headphone output, positioned alongside a phones level
potentiometer
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Two master front panel potentiometers for adjusting each of the master
outputs of all1 channels
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Four front panel level potentiometers3 for adjusting each input
A 12 VDC rear panel power socket, which is ideal for field use2. The unit
generates broadcast voltage level 15V and 48V internally from the
single 12 VDC input
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Underside panel switches3 for selecting the balanced level (Mic or line)
Underside panel switches3 for applying 48V phantom power4
Achieving the best performance means:
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Connecting only good quality connection cables, thus avoiding
interference, deterioration in signal quality due to poor matching, and
elevated noise levels (often associated with low quality cables)
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Avoiding interference from neighboring electrical appliances that may
adversely influence signal quality and positioning your VA-14 in a
location free from moisture and away from excessive sunlight and dust
Caution – No operator-serviceable parts inside unit.
Warning – Use only the Kramer Electronics input power
wall adapter that is provided with this unit5.
Warning – Disconnect power and unplug unit from wall
before installing or removing device or servicing unit.
1 The combined signals from inputs 1 to 4 are mixed
2 Via a belt battery, for example
3 Each corresponds to its respective input
4 This is for applications that require typical condenser microphones to be connected directly to the VA-14. To prevent
unnecessary damage, apply phantom power to the Mic only when required
5 For example: model number AD2512C, part number 2535-000251
3
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Your VA-14 4x1 Balanced Audio Mixer
4 Your VA-14 4x1 Balanced Audio Mixer
Figure 1, Table 1 and Table 2 define the VA-14 4x1 Balanced Audio Mixer.
Figure 1: VA-14 4x1 Balanced Audio Mixer
Table 1: VA-14 4x1 Balanced Audio Mixer Front Panel Features
#
1
2
3
4
Feature
POWER Switch
Function
Illuminated switch for turning the unit ON or OFF
PHONES OUT 6.5mm Connector Connect to the headphone set
PHONES LEVEL Potentiometer
MASTER LEVEL Potentiometer
Adjusts the headphone volume
Adjusts the combined signals from all inputs mixed to the output
(from 1 to 2)
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INPUT LEVEL Potentiometer
Adjusts the input level (from 1 to 4)
Table 2: VA-14 4x1 Balanced Audio Mixer Rear Panel Features
#
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7
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Feature
Function
INPUT XLR Female Connectors
OUT XLR Male Connectors
12V DC
Connect to the audio source (from 1 to 4)
Connect to the audio acceptor (from 1 to 2)
+12V DC connector for powering the unit
KRAMER: SIMPLE CREATIVE TECHNOLOGY
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Your VA-14 4x1 Balanced Audio Mixer
Figure 2 and Table 3 define the underside of the VA-14 4x1 Balanced Audio
Mixer:
Figure 2: VA-14 4x1 Balanced Audio Mixer Underside Features
Table 3: VA-14 4x1 Balanced Audio Mixer Underside Features
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Feature
Function
1
INPUT
(from 1 to 4)
PHANTOM Move to ON to select a phantom microphone; move to OFF to
select a dynamic microphone
2
3
LEVEL
Move to MIC to select a microphone level input; move to LINE to
select a LINE level input
Move to MIC to select a microphone level output; move to LINE
to select a LINE level output (from 1 to 2)
OUT LEVEL
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Using Your VA-14 4x1 Balanced Audio Mixer
5 Using Your VA-14 4x1 Balanced Audio Mixer
Sections 5.1 and 5.2 describe how to connect and operate your balanced audio
mixer, respectively.
5.1 Connecting Your VA-14 4x1 Balanced Audio Mixer
To connect up to four balanced audio sources to the VA-14 4x1 Balanced
Audio Mixer unit, as the example in Figure 3 illustrates, do the following:
1. Connect a balanced audio source (for example, a condenser microphone)
to the XLR female:
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INPUT 1 connector
INPUT 3 connector
On the underside set the INPUT 1 and INPUT 3:
°
°
PHANTOM switches to ON
LEVEL switches to MIC
2. Connect a balanced audio source (for example, a balanced audio tape
player) to XLR female:
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INPUT 2 connector
INPUT 4 connector
On the underside set the INPUT 2 and INPUT 4:
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PHANTOM switches to OFF
LEVEL switches to LINE
3. Connect each of the XLR male OUTPUT 1 and OUTPUT 2 connectors
to two power amplifiers, and connect each power amplifier to a pair of
speakers.
On the machine underside, set the OUT 1and OUT 2 switches to LINE.
4. Connect the PHONES OUTPUT connector to a headphone set.
5. Connect the 12V DC power adapter to the power socket and connect the
adapter to the mains electricity.
For every unused input, be sure to rotate the LEVEL potentiometer fully
counter-clockwise (to the minimum level)
KRAMER: SIMPLE CREATIVE TECHNOLOGY
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Using Your VA-14 4x1 Balanced Audio Mixer
Figure 3: Connecting the VA-14 4x1 Balanced Audio Mixer
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Technical Specifications
5.2 Operating Your VA-14 4x1 Balanced Audio Mixer
On the VA-14xl 4x1 Balanced Audio Mixer unit, you can adjust the level:
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From a specific1 input, by rotating the appropriate LEVEL potentiometer
From all the inputs mixed together, by rotating each of the MASTER
potentiometers (1 and 2) respectively
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At the headphone set, by rotating the PHONES LEVEL potentiometer
6 Technical Specifications
Table 4: Technical Specifications2 of the VA-14 4x1 Balanced Audio Mixer
INPUTS:
OUTPUTS:
4 balanced audio, Line or Mic, on female XLR connectors
2 audio, balanced on a male XLR connector
One headphone output on a 6.5mm connector
Line: 20Vpp; Phones: 4.5Vpp; Mic: 300mVpp
> 40 kHz
Mic in, Phones Out: 45.3dB
Line In, Phones Out: 83.3dB
Line In, Line Out: 84.3dB
Mic In, Line Out: 64dB
MAX. OUTPUT LEVEL:
BANDWIDTH (-3dB):
S/N RATIO:
CROSSTALK (all hostile): Mixed inputs
CONTROLS:
Line In, Line Out: <-57dB to -14.3dB
Mic In, Line Out; <0dB to 60.5dB
Line In, Phones Out: <-47dB to -18dB
Mic In, Phones Out: <0dB to 58.9dB
In level and master/phones level, min to max position for both
Line In, MIC OUT range: <-50dB to -25dB
Mic In, Mic Out range:<0dB to 21.6dB
Underside slide switches: inputs: Line/Mic and +48V phantom ON/OFF
Outputs: Line/Mic
COUPLING:
In: AC; out: bal line/mic – DC; phones, AC
AUDIO THD + NOISE:
Line In, Line Out: 0.007%; Mic In, Line Out: 0.15%
Line In, Phones Out: 0.085%
Mic In, Phones Out: 0.38%
AUDIO 2nd HARMONIC: Line In, Line Out: 0.001%; Mic In, Line Out: 0.005%
Line In, Phones Out: 0.009%; Mic In, Phones Out: 0.024%
POWER SOURCE:
DIMENSIONS:
WEIGHT:
ACCESSORIES:
OPTIONS:
12 V, 250mA DC
21.5cm x 16.2cm x 4.4cm (8.46" x 6.38" x 1.73"), W, D, H
1.4 kg. (3.1 lbs.) approx.
Power supply
19" rack adapter
1 For example, rotating the LEVEL potentiometer 2 will adjust the volume generated to the speakers via the power amplifier
from the balanced audio source 2
2 Specifications are subject to change without notice
KRAMER: SIMPLE CREATIVE TECHNOLOGY
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LIMITED WARRANTY
Kramer Electronics (hereafter Kramer) warrants this product free from defects in material and workmanship under the
followingterms.
HOW LONGIS THE WARRANTY
Labor and parts are warranted for seven years from the date of the first customer purchase.
WHO IS PROTECTED?
Only the first purchase customer may enforce this warranty.
WHATISCOVEREDANDWHATISNOT COVERED
Except as below, this warranty covers all defects in material or workmanship in this product. The following are not covered
by thewarranty:
1. Any product which is not distributed by Kramer, or which is not purchased from an authorized Kramer dealer. If you are
uncertain as to whether a dealer is authorized, please contact Kramer at one of the agents listed in the Web site
2. Any product,on which the serialnumber has been defaced, modified or removed.
3. Damage, deterioration ormalfunctionresultingfrom:
i) Accident, misuse, abuse, neglect, fire, water, lightning orother acts of nature
ii) Product modification, or failure tofollowinstructions suppliedwith theproduct
iii) Repairorattemptedrepairby anyonenot authorized byKramer
iv) Anyshipmentofthe product(claims mustbepresentedtothe carrier)
v) Removalorinstallationofthe product
vi) Anyother cause, whichdoes notrelateto aproduct defect
vii) Cartons, equipment enclosures, cables or accessoriesusedinconjunctionwiththe product
WHATWE WILLPAYFORAND WHATWE WILLNOTPAYFOR
Wewillpay laborand material expensesforcovered items.Wewillnotpayfor thefollowing:
1. Removal or installationscharges.
2. Costs of initial technical adjustments (set-up), including adjustment of user controls or programming. These costs are the
responsibility of theKramer dealerfromwhomtheproduct was purchased.
3. Shipping charges.
HOW YOU CAN GET WARRANTY SERVICE
1. To obtain service on you product, you must take or ship it prepaid to any authorized Kramer service center.
2. Whenever warranty service is required, the original dated invoice (or a copy) must be presented as proof of warranty
coverage, and should be included in any shipment of the product. Please also include in any mailing a contact name,
company, address, and a description of the problem(s).
3. For the name of the nearest Kramer authorized service center, consult your authorized dealer.
LIMITATION OFIMPLIED WARRANTIES
All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.
EXCLUSIONOFDAMAGES
The liability of Kramer for any effective products is limited to the repair or replacement of the product at our option. Kramer shall
notbeliable for:
1. Damage to other property caused by defects inthis product, damages basedupon inconvenience, loss ofuse of theproduct, loss
of time, commercialloss;or:
2. Any other damages, whether incidental, consequential or otherwise. Some countries may notallow limitations on how long an
implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitations andexclusions maynotapplytoyou.
Thiswarranty gives youspecificlegalrights, andyou may alsohaveother rights, which varyfromplacetoplace.
NOTE:Allproducts returned to Kramer forservicemust havepriorapproval.Thismay be obtained fromyourdealer.
Thisequipment has been testedtodeterminecompliance with therequirements of:
EN-50081:
"Electromagneticcompatibility(EMC);
genericemissionstandard.
Part 1: Residential, commercialand lightindustry"
"Electromagneticcompatibility(EMC) genericimmunitystandard.
Part 1: Residential, commercialand lightindustryenvironment".
FCC Rules and Regulations:
EN-50082:
CFR-47:
Part 15: “Radio frequency devices
Subpart B Unintentional radiators”
CAUTION!
Servicing the machines can only be done by an authorized Kramer technician. Any user who makes changes or
modifications to the unit without the expressed approval of the manufacturer will void user authority to operate the
equipment.
Use thesuppliedDCpower supplytofeed power to themachine.
Please userecommended interconnection cablestoconnectthe machineto other components.
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For the latest information on our products and a list of Kramer
where updates to this user manual may be found.
We welcome your questions, comments and feedback.
Safety Warning:
Disconnect the unit from the power supply before
opening/servicing.
Caution
Kramer Electronics, Ltd.
E-mail: [email protected]
P/N: 2900-000314 REV 1
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