Kramer VM-80HP User manual

Kramer Electronics, Ltd.
USER MANUAL
Model:
VM-80HP
1:8 Stereo Headphone Distributor

Contents
i
Contents
1Introduction 1
2Getting Started 1
3Overview 2
4Your VM-80HP 1:8 Stereo Headphone Distributor 3
5Connecting Your VM-80HP 1:8 Stereo Headphone Distributor 4
6Technical Specifications 5
Figures
Figure 1: VM-80HP 1:8 Stereo Headphone Distributor 3
Figure 2: Connecting the VM-80HP 4
Tables
Table 1: Features and Functions of the VM-80HP 1:8 Stereo Headphone Distributor 3
Table 2: Technical Specifications of the VM-80HP 1:8 Stereo Headphone Distributor 5

Introduction
1
1 Introduction
Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been
providing a world of unique, creative, and affordable solutions to the vast range
of problems that confront the video, audio, presentation, and broadcasting
professional on a daily basis. In recent years, we have redesigned and upgraded
most of our line, making the best even better! Our 1,000-plus different models
now appear in 11 groups1
Congratulations on purchasing your Kramer VM-80HP 1:8 Stereo
Headphone Distributor,which is ideal for:
that are clearly defined by function.
•Recording and project studios
•Audio monitoring in distribution or duplication systems
•Retail stores and other point-of-sale systems
The package includes the following items:
•VM-80HP 1:8 Stereo Headphone Distributor
•Power adapter (12V DC Input)
•This user manual2
2 Getting Started
We recommend that you:
•Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
•Review the contents of this user manual
•Use Kramer high performance high resolution cables3
1 GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix Switchers; GROUP 3: Control Systems; GROUP 4:
Format/Standards Converters; GROUP 5: Range Extenders and Repeaters; GROUP 6: Specialty AV Products; GROUP 7:
Scan Converters and Scalers; GROUP 8: Cables and Connectors; GROUP 9: Room Connectivity; GROUP 10: Accessories
and Rack Adapters; GROUP 11: Sierra Products
2 Download up-to-date Kramer user manuals from our Web site: http://www kramerelectronics com
3 The complete list of Kramer cables is on our Web site at http://www kramerelectronics com

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Overview
2
3 Overview
The Kramer VM-80HP is a high performance distribution amplifier for
headphone signals. It takes one stereo headphone input and distributes the
signal to eight identical stereo headphone outputs. The VM-80HP features a
mono/stereo selection button, letting you connect up to 16 mono outputs, and
Level (Gain) Controls for each output.
To achieve the best performance:
•Connect 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)
•Avoid interference from neighboring electrical appliances that may
adversely influence signal quality and position your Kramer VM-80HP
away from moisture, excessive sunlight and dust

Your VM-80HP 1:8 Stereo Headphone Distributor
3
4 Your VM-80HP 1:8 Stereo Headphone Distributor
Figure 1and Table 1define the VM-80HP:
Figure 1: VM-80HP 1:8 Stereo Headphone Distributor
Table 1: Features and Functions of the VM-80HP 1:8 Stereo Headphone Distributor
#
Feature
Function
1 POWER Switch Illuminated switch for turning the unit ON or OFF
2 LEVEL CONTROL Potentiometers Control audio output levels (from 1 to 8)
3 INPUT 6.5mm stereo phone socket Connect to audio source
4 MODE Stereo/Mono Push Button Press to set audio acceptors to mono
Release to set audio acceptors to stereo
5 OUT 6.5mm stereo phone sockets Connect to audio acceptors (from 1 to 8)
6 12V DC +12V DC connector for powering the unit

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting Your VM-80HP 1:8 Stereo Headphone Distributor
4
5 Connecting Your VM-80HP 1:8 Stereo Headphone Distributor
To connect the VM-80HP, as illustrated in the example in Figure 2, do the
following:
1. Connect an audio source (for example, a stereo audio source) to the INPUT
6.5mm phone socket connector.
2. Connect the OUT 6.5mm phone sockets to up to 8 acceptors, as follows1
Connect the OUT 1 connector to an audio acceptor (for example,
headphones)
:
Connect the OUT 8 connector to an audio acceptor (for example,
speakers)
3. Connect the 12V DC power adapter to the power socket and connect the
adapter to the mains electricity (not shown in Figure 2).
Set the LEVEL CONTROL potentiometers for each output as required.
Figure 2: Connecting the VM-80HP
1 You do not have to connect all the outputs

Technical Specifications
5
6 Technical Specifications
Table 2includes the technical specifications:
Table 2: Technical Specifications1
INPUT:
of the VM-80HP 1:8 Stereo Headphone Distributor
Stereo Mode: 1 audio stereo unbalanced, 1Vpp/10kΩon 6.5mm stereo phone
socket
OUTPUTS: Stereo Mode: 8 audio stereo unbalanced, 500mW/8Ωon 6.5mm stereo phone
sockets
Mono Mode: 16 audio mono unbalanced, 500mW/8Ωon 6.5mm stereo phone
socket
MAX. OUTPUT LEVEL: 7.2Vpp, 8Ω
BANDWIDTH (-3dB): >100kHz
S/N RATIO:
78.8dB
CONTROLS: Level control: -44dB to +17dB
COUPLING: AC
AUDIO THD + NOISE:
0.023%
AUDIO 2nd
HARMONIC: 0.003%
POWER SOURCE: 12VDC, 1.9A DC
DIMENSIONS: 21.46cm x 16.25cm x 4.04cm (8.45" x 6.39" x 1.59"), W, D, H
WEIGHT:
1.3kg (2.9lbs) approx.
ACCESSORIES: Power supply, mounting bracket
OPTIONS: RK-1 19" rack adapter
1 Specifications are subject to change without notice

KRAMER: SIMPLE CREATIVE TECHNOLOGY
6
LIMITED WARRANTY
WHOISPROTECTED?
WHATISCOVEREDANDWHATISNOTCOVERED
WHATWEWILLPAYFORANDWHATWEWILLNOTPAYFOR
HOW YOU CAN GET WARRANTY SERVICE
LIMITATIONOFIMPLIEDWARRANTIES
EXCLUSIONOFDAMAGES
CAUTION!
Kramer Electronics (hereafter ) warrants this product free from defects in material and workmanship under the
following terms Kramer
HOWLONGIS THE WARRANTY
Labor and parts are warranted for seven years from the date of the first customer purchase
Only the first purchase customer may enforce this warranty
Wewillpaylaborandmaterialexpensesforcovereditems Wewillnotpayforthefollowing:
The liability of Kramerforany effectiveproducts is limited to the repairor replacement of theproduct at ouroption Kramer shall
notbeliablefor:
Thiswarrantygivesyouspecificlegalrights,andyoumayalsohaveotherrights,whichvaryfromplacetoplace
AllproductsreturnedtoKramerforservicemusthavepriorapproval Thismaybeobtainedfromyourdealer
Thisequipmenthasbeentestedtodeterminecompliancewiththerequirementsof:
EN-50081: "Electromagneticcompatibility(EMC);
genericemissionstandard
Residential,commercialandlightindustry"
EN-50082: "Electromagneticcompatibility(EMC)genericimmunitystandard
Part1:Residential,commercialandlightindustryenvironment"
CFR-47: FCC* Rules and Regulations:
Part 15: “Radio frequency devices
Subpart B Unintentional radiators”
Except as below, this warranty covers all defects in material or workmanship in this product The following are not covered
bythewarranty:
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
www kramerelectronics com
2 Any product, on which the serial number has been defaced, modified or removed, or on which the WARRANTY VOID
TAMPERED sticker has been torn,
3 Damage,deteriorationormalfunctionresultingfrom:
i) Accident,misuse,abuse,neglect,fire, water,lightningorotheractsofnature
ii) Productmodification,orfailuretofollowinstructionssuppliedwiththeproduct
iii) RepairorattemptedrepairbyanyonenotauthorizedbyKramer
iv) Anyshipmentoftheproduct(claimsmustbepresentedtothecarrier)
v) Removalorinstallationoftheproduct
vi) Anyothercause,whichdoesnotrelatetoaproductdefect
vii)Cartons,equipmentenclosures,cablesoraccessoriesusedinconjunctionwiththeproduct
1 Removalorinstallationscharges
2 Costs of initial technical adjustments (set-up), including adjustment of user controls or programming These costs are the
responsibilityoftheKramerdealerfromwhomtheproductwaspurchased
3 Shippingcharges
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
All implied warranties,including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty
1 Damage tootherpropertycausedbydefectsinthisproduct,damagesbaseduponinconvenience,lossofuseoftheproduct,loss
oftime,commercialloss;or:
2 Anyotherdamages, whetherincidental,consequential or otherwise Some countries maynotallowlimitations onhow longan
implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitationsandexclusionsmaynotapplytoyou
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
UsethesuppliedDCpowersupplytofeedpowertothemachine
Pleaseuserecommended interconnection cablestoconnect the machineto other components
IF reattached, removed or otherwise interfered with
*FCCandCEapprovedusingSTPcable(fortwistedpairproducts)
NOTE:
Part1:

Kramer Electronics, Ltd.
Web site: www kramerelectronics.com
E-mail: [e-mail]
P/N: 2900-000686 REV 1
For the latest information on our products and a list of Kramer
distributors, visit our Web site: www.kramerelectronics.com,
where updates to this user manual may be found.
We welcome your questions, comments and feedback.
Caution
Safety Warning:
Disconnect the unit from the power supply before
opening/servicing.