voxativ A211 User manual

Integrated Amplifier - A211
OPERATION MANUAL
ENJOY THE AMUSEMENT OF A LISTENING YOU
NEVER EXPERIENCED BEFORE
Thank you for using the Vo x a t i v A211 vacuum tube amplifier. Please read
this operation manual carefully before using.

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ⅠSPECIFICATIONS
n Power Output 12W + 12W ( 8ΩRMS )
n Frequency response 10Hz~20kHz -1dB
n THD 2%
n S/N ratio 92 dB(A)
n Input sensitivity 250 mV
n Inputs CD, Aux1, Aux2
n Output impedance 8Ω,16Ω
n Power requirement AC 115/230V±5%, 50~60Hz
n Tube complement 2 x 6SL7, 2 x 6SN7, 2 x 211
n Weight 36.5kg
n Dimension 450×413×110 (220)mm (W×D×H)
n Power consumption 220 W
ⅡIMPORTANT SAFETY INFORMATION
l Be careful when carrying in order to avoid damaging the vacuum tubes and
the other components.
l To reduce the risk of electric shock, don’t remove the cover.
l Don’t attempt to repair the product by yourself.
l No user serviceable parts inside. Refer servicing to qualified service
personal.
l Keep liquid away from the amplifier. If you spill liquid into the unit, pull
out the power plug at once and consult your dealer.
III WARRANTY SERV I C E
l This product is warranted for a period of twelve months beginning from the
date of purchase.
l The tubes are warranted for a period of 90 days beginning from the date of
purchase.
l The defective product must be returned to your dealer or our company for
repairing when your dealer or our company accepts your requirement.
l The warranty doesn’t extend to any product that has been opened by you
without permission of our company.

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IV OPERATION INSTRUCTIONS
A) OPENING THE PACKAGE
Please check carefully whether there is any damage with the box before you open it.
Put it on a flat surface with the arrow upward. Rip away the sealed tape and open the
carton, then you’ll find:
1) One amplifier - Voxativ A211
2) Tubes: 2 x 6SL7, 2 x 6SN7, 2 x 211
3) one power supply cord
4) one operation manual
5) one Remote control unit
Note: Be sure to use this amplifier only at rated voltage. Please check whether the
rated voltage marking on the back plate corresponds to your line voltage. If not,
please contact your dealer.
Suggestion: Please keep the carton and the other wrappings well, perhaps you’ll use
them when you will move the amplifier.
B) INSTALLING THE TUBES
Refer to the installation illustrations on graph 1, install the tubes to the suitable
sockets in the chassis.
Note: Be sure to disconnect the power cord before you perform these installing
procedures.

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Graph 1: Voxa t i v A 2 11
tube locations
Graph 2: Voxat i v A 2 11 t u b e m o u nting (Insert tube and the turn it 90 degrees)
C) CONNECTING
Connect the signal output of your CD Player to one the RCA input sockets with a high
quality screened signal cable. Voxativ cabling is recommended.
Check the impedance of your speakers and connect the positive (+) cable to the 8 or
16 Ohm terminal on the rear panel. The negative (-) cable must be connected to the
0-Ohm (black) terminal.
Note: To prevent damage to the circuit, never short-circuit positive (+) and negative (-)
speaker terminals.
Connect the power cord to the AC Input on the rear panel and then connect it to your
power outlet.
Note: The receptacle which the amplifier power cord is connected to must be the
3-pin grounding type.
Be sure to use at rated voltage. Please check whether the rated voltage marking on the
back plate corresponds to your line voltage. If not, please contact your dealer.
Preamp out: This Preamp-out section is especially made to drive the Voxativ 9.87
Loudspeaker System. It can also be used to drive any other device like active
crossovers or additional power amplifiers. The preamp out is volume controlled.

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Graph 3:Voxat i v A 2 11 back panel
D) TURNING ON
When you are sure all connections are correct and the volume of the amplifier is set to
minimum, press the power knob on the front panel. The power-LED will light up and
show you that the unit is running in preheat mode. After a delay of 60 seconds the
amplifier is in work condition.
Be sure that your source is set to play and right-turn up the volume.
Select your input by using the input selector by turning to the left.
Note: To prevent damage to your amplifier or speaker, never disconnect the input or
power cable during the unit is running.
Graph 4: Vox a t i v A211 front panel
Remote control: This amplifier is equipped with a 48-step attenuator. This is motor
driven and can be steered by the remote control unit that is included.

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V BIAS AND HUM ADJUSTMENT 211 - TUBES
For setting the bias a voltage- or multi-meter and a small screwdriver are required.
The measuring range of your meter must be set to 2V DC. There are two test point
terminals close to the 211 tubes to connect the test leads of your multi meter.
Be sure to adjust the volume to the lowest position and turn on the amplifier. After
waiting about 5 minutes connect your DC-voltmeter to the test points of one of the
211 tube. To increase the bias turn the bias potentiometer above the test points
clockwise. Therefor you need a small screwdriver. The measured value must be about
0.65V DC.
After bias adjustment the hum balance must be checked. Use the small screwdriver
and turn the hum-potentiometer in this direction where you can hear the lowest hum
level in your speaker.
Repeat the bias and hum adjustment after 20 minutes again until the appropriate
values are reached.
Graph 5: Vox a t i v A 211 bias adj., test points and hum balance

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VI TROUBLESHOOTING
Basic troubleshooting of an amplifier is similar to troubleshooting of any other
electrical or electronic equipment. Always check the most obvious possible causes
first. To give you a few ideas of what to look for, check the following.
Problem
Cause
Remedy
No power when POWER is
pressed.
Mains plug not inserted
correctly.
The fuse is broken.
Plug in securely.
Replace the fuse with a good
one of the same model.
The location of music is not
fine.
L and R of input or output are
mistaken or positive and
negative of speaker terminal is
mistaken.
Reconnect it.
No sound.
Vo l u m e c o n t r o l i s s e t t o
minimum.
Source Selector set to wrong.
Speakers are not connected.
Wrong input is selected.
Turn up the volume.
Check Selector.
Check speaker cables.
Check input selection.
The noise is overloud.
Not fine signal shielded cable.
The signal cable, power supply
cord and the video frequency
cable are placed too close or
get tangled up.
Components or circuits are in
trouble.
Replace the signal cable with a
good one.
Put the connections in good
order. Keep the signal cable
away from the others.
Contact your dealer .

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VII WARRANTY
Voxativ products are covered by a 3-Year Limited Warranty, and a 90 days Limited
Warranty on vacuum tubes. This Limited Warranty initiates from the date of purchase,
and is limited to the original purchaser, or in the case of demonstration equipment,
limited to the balance of warranty remaining after original shipment to the retailer or
importer.
Nevertheless we will not support the warranty for the following points:
- Damage, fault or failure due to alteration or repairs made by anyone other than
us, or the use of supplies and accessories other than those manufactured by us.
- Damage, fault or failure due to causes beyond Our control including, but not
limited to, repairs necessary due to operator negligence, improper installation,
damage caused by spillage of foods/liquids, wrong usage of electrical supply
and voltage, abnormal voltage, excessive heat, dust, corrosive surroundings,
chemical reaction, failure to maintain the Product, failure to operate or use the
Product according to instructions, accident, mishandling, misuse, tampering,
vandalism, theft, fire, lightning, flood, wind, freezing, power failure, static,
normal wear and tear, pests, vermin, foreign matter entering the Product,
inadequate or excess power supply, unusual atmospheric conditions, or acts of
war.
- Damage, fault or failure resulting from software, virus(es), electrical wiring
and connections, user facilitated minor adjustments and settings, external
antenna or local reception problems, structural problems of Your premises,
inaccessible Products or parts, negligence, misuse, tampering or abuse,
whether willful or not.
- Damage, fault or failure due to improper transportation, inappropriate storage
conditions or materials, improper ventilation, reconfiguration of the Product,
movement of the Product.
- Damage, fault or failure due to or arising out of, transit or delivery, packing,
unpacking, assembly, installation, routine maintenance, dismantle, relocation
or removal.
- Non failure problems that do not require parts and intermittent issues,
including without limitation, reception and/or incompatibility issues,
demonstration, training, reminders, adjustments, set-up, installations, battery
change, replenishing of consumables, short circuit, routine maintenance and
servicing, periodic checkups, cleaning, checking of improper operation or
incorrect use. We will not pay for adjustments or repairs required because of
conditions at Your location or specific to You.
- Products where the serial number is removed, defaced or made illegible,
parallel imported sets, products purchased overseas or from non-authorized
dealers or retailers, second hand sets, products sold "AS IS",

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"REFURBISHED" or bearing similar notations.
- Cosmetic defects, reduced or impaired functionality, reduced lifespan or
limitations of Products which, in our records indicate, are second hand, "Used",
"Refurbished", "Open Set" or "Display Sets".
- Any utilization of Product that is inconsistent with either the design of the
Product or the way the manufacturer intended the Product to be used. Any
installation and/or modifications that prevents normal service. Any and all
cases in which a reasonable manufacturer of such a product would not honor
the warranty of the Product.
- Normal wear and tear and cosmetic damage such as, but not limited to
corrosion, scratches, dents, rust, stains. Non-functional parts such as, but not
limited to, plastics and finishes. Expendable or lost items, such as, but not
limited to cables, ear buds or head phones.
- Consumables. Consumables are defined as any part or component of an
expendable nature and/or any item that is designed to be consumed (wear out)
during the life of the Product, regardless if it is consumer replaceable or not
and whether such consumables originate from us or not.
- Consequential losses and/or damages as a result of malfunctioning of, damage
to, failure of an operating part of the covered Product, or damages, fault or
failure as a result of any repairs or replacements under this warranty. Damages,
fault or failure caused by delays in rendering of our services or loss of use
during servicing or otherwise awaiting parts are not covered. You are
responsible for creating backups of all your data and software on a regular
basis.
- Damages, fault, failure, imperfections, caused by abuse, tampering, illegal use,
negligence, prolonged use or operation.
- Products that are leased, rented, used exceeding normal limits, used
continuously and/or subject to abuse, unreasonable, abnormal or extreme
operations.
- Warranty card is altered, defaced or erased in any manner whatsoever.
Through a claim of our warranty the original warranty period will be neither
extended nor will a new warranty period be started. So if you have a complaint,
please contact your dealer or directly to our
Technical Support under the phone number: +49 (0) 30 / 2100 5662
VIII NOTICE
The information in this manual is subject to change without notice.
Copyright Voxativ GmbH, 2017